./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_1+newton_2_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_1+newton_2_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --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 0125703895252bbc87284f9ee87e686d5271b5cf813038cb613c1b0c2ad30cb5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:45:05,420 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:45:05,546 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:45:05,554 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:45:05,555 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:45:05,603 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:45:05,604 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:45:05,605 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:45:05,605 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:45:05,606 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:45:05,607 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:45:05,607 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:45:05,607 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:45:05,608 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:45:05,608 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:45:05,608 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:45:05,608 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:45:05,608 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:45:05,608 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:45:05,608 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:45:05,608 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:45:05,609 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:45:05,609 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:45:05,609 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:45:05,609 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:45:05,609 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:45:05,609 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:45:05,609 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:45:05,609 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:45:05,609 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:45:05,610 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:45:05,610 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:45:05,610 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:45:05,610 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:45:05,610 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:45:05,611 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:45:05,612 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:45:05,612 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:45:05,612 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:45:05,612 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:45:05,612 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:45:05,613 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:45:05,613 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:45:05,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:45:05,613 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:45:05,614 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:45:05,614 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:45:05,614 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:45:05,614 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness 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 -> 0125703895252bbc87284f9ee87e686d5271b5cf813038cb613c1b0c2ad30cb5 [2024-11-28 04:45:05,991 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:45:06,001 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:45:06,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:45:06,006 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:45:06,006 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:45:06,008 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/combinations/gcd_1+newton_2_2.i [2024-11-28 04:45:09,532 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/data/b987fa8d5/30488d1015394bf0b104de2e9f66c8e3/FLAGe01266728 [2024-11-28 04:45:09,938 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:45:09,939 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/sv-benchmarks/c/combinations/gcd_1+newton_2_2.i [2024-11-28 04:45:09,967 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/data/b987fa8d5/30488d1015394bf0b104de2e9f66c8e3/FLAGe01266728 [2024-11-28 04:45:10,031 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/data/b987fa8d5/30488d1015394bf0b104de2e9f66c8e3 [2024-11-28 04:45:10,041 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:45:10,044 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:45:10,046 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:45:10,046 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:45:10,054 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:45:10,054 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:45:10" (1/1) ... [2024-11-28 04:45:10,057 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23f2d808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:10, skipping insertion in model container [2024-11-28 04:45:10,058 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:45:10" (1/1) ... [2024-11-28 04:45:10,082 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:45:10,316 WARN L250 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_af8a80df-0238-496c-a98d-078695eb8b5b/sv-benchmarks/c/combinations/gcd_1+newton_2_2.i[1226,1239] [2024-11-28 04:45:10,360 WARN L250 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_af8a80df-0238-496c-a98d-078695eb8b5b/sv-benchmarks/c/combinations/gcd_1+newton_2_2.i[2807,2820] [2024-11-28 04:45:10,361 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:45:10,373 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:45:10,387 WARN L250 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_af8a80df-0238-496c-a98d-078695eb8b5b/sv-benchmarks/c/combinations/gcd_1+newton_2_2.i[1226,1239] [2024-11-28 04:45:10,399 WARN L250 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_af8a80df-0238-496c-a98d-078695eb8b5b/sv-benchmarks/c/combinations/gcd_1+newton_2_2.i[2807,2820] [2024-11-28 04:45:10,401 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:45:10,421 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:45:10,421 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:10 WrapperNode [2024-11-28 04:45:10,422 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:45:10,423 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:45:10,424 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:45:10,424 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:45:10,433 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:10" (1/1) ... [2024-11-28 04:45:10,446 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:10" (1/1) ... [2024-11-28 04:45:10,472 INFO L138 Inliner]: procedures = 27, calls = 24, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 85 [2024-11-28 04:45:10,472 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:45:10,473 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:45:10,473 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:45:10,473 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:45:10,484 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:10" (1/1) ... [2024-11-28 04:45:10,484 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:10" (1/1) ... [2024-11-28 04:45:10,486 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:10" (1/1) ... [2024-11-28 04:45:10,503 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2024-11-28 04:45:10,504 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:10" (1/1) ... [2024-11-28 04:45:10,504 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:10" (1/1) ... [2024-11-28 04:45:10,510 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:10" (1/1) ... [2024-11-28 04:45:10,512 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:10" (1/1) ... [2024-11-28 04:45:10,516 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:10" (1/1) ... [2024-11-28 04:45:10,518 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:10" (1/1) ... [2024-11-28 04:45:10,519 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:10" (1/1) ... [2024-11-28 04:45:10,521 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:45:10,522 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:45:10,522 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:45:10,522 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:45:10,523 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:10" (1/1) ... [2024-11-28 04:45:10,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:45:10,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:10,563 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:45:10,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:45:10,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:45:10,596 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2024-11-28 04:45:10,596 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2024-11-28 04:45:10,596 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-28 04:45:10,597 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-28 04:45:10,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:45:10,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:45:10,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:45:10,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:45:10,682 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:45:10,685 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:45:11,056 INFO L? ?]: Removed 28 outVars from TransFormulas that were not future-live. [2024-11-28 04:45:11,056 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:45:11,073 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:45:11,073 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 04:45:11,073 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:45:11 BoogieIcfgContainer [2024-11-28 04:45:11,073 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:45:11,077 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:45:11,078 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:45:11,086 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:45:11,086 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:45:10" (1/3) ... [2024-11-28 04:45:11,087 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a58903a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:45:11, skipping insertion in model container [2024-11-28 04:45:11,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:10" (2/3) ... [2024-11-28 04:45:11,088 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a58903a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:45:11, skipping insertion in model container [2024-11-28 04:45:11,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:45:11" (3/3) ... [2024-11-28 04:45:11,089 INFO L128 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_2_2.i [2024-11-28 04:45:11,106 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:45:11,108 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG gcd_1+newton_2_2.i that has 3 procedures, 38 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2024-11-28 04:45:11,184 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:45:11,201 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@50eca82e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:45:11,201 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-28 04:45:11,208 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 31 states have internal predecessors, (40), 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) [2024-11-28 04:45:11,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 04:45:11,217 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:11,217 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:11,218 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:11,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:11,225 INFO L85 PathProgramCache]: Analyzing trace with hash -246796359, now seen corresponding path program 1 times [2024-11-28 04:45:11,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:11,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886108907] [2024-11-28 04:45:11,236 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:11,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:11,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:11,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:11,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:11,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886108907] [2024-11-28 04:45:11,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886108907] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:11,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:45:11,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:45:11,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199408491] [2024-11-28 04:45:11,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:11,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:45:11,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:11,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:45:11,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:45:11,491 INFO L87 Difference]: Start difference. First operand has 38 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 31 states have internal predecessors, (40), 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 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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) [2024-11-28 04:45:11,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:11,520 INFO L93 Difference]: Finished difference Result 67 states and 80 transitions. [2024-11-28 04:45:11,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:45:11,522 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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 [2024-11-28 04:45:11,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:11,530 INFO L225 Difference]: With dead ends: 67 [2024-11-28 04:45:11,530 INFO L226 Difference]: Without dead ends: 30 [2024-11-28 04:45:11,534 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:45:11,538 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:11,539 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:45:11,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-28 04:45:11,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-28 04:45:11,583 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) [2024-11-28 04:45:11,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2024-11-28 04:45:11,591 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 11 [2024-11-28 04:45:11,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:11,592 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2024-11-28 04:45:11,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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) [2024-11-28 04:45:11,593 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2024-11-28 04:45:11,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 04:45:11,597 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:11,597 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:11,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:45:11,598 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:11,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:11,600 INFO L85 PathProgramCache]: Analyzing trace with hash -250490443, now seen corresponding path program 1 times [2024-11-28 04:45:11,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:11,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779059625] [2024-11-28 04:45:11,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:11,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:11,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:11,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:11,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:11,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779059625] [2024-11-28 04:45:11,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779059625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:11,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:45:11,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:45:11,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742791466] [2024-11-28 04:45:11,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:11,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:45:11,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:11,807 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:45:11,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:45:11,808 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. 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) [2024-11-28 04:45:11,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:11,839 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2024-11-28 04:45:11,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:45:11,840 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 [2024-11-28 04:45:11,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:11,841 INFO L225 Difference]: With dead ends: 39 [2024-11-28 04:45:11,841 INFO L226 Difference]: Without dead ends: 32 [2024-11-28 04:45:11,841 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:45:11,891 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 3 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:11,892 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 55 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:45:11,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-28 04:45:11,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2024-11-28 04:45:11,898 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) [2024-11-28 04:45:11,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2024-11-28 04:45:11,899 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 11 [2024-11-28 04:45:11,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:11,900 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2024-11-28 04:45:11,900 INFO L472 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) [2024-11-28 04:45:11,900 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2024-11-28 04:45:11,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-28 04:45:11,901 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:11,901 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:11,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:45:11,902 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:11,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:11,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1385408911, now seen corresponding path program 1 times [2024-11-28 04:45:11,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:11,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273217159] [2024-11-28 04:45:11,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:11,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:11,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:12,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:12,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:12,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273217159] [2024-11-28 04:45:12,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273217159] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:45:12,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454823982] [2024-11-28 04:45:12,271 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:12,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:12,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:12,279 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:45:12,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:45:12,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:12,395 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 04:45:12,401 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:45:12,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:12,473 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:45:12,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:12,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454823982] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:45:12,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:45:12,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2024-11-28 04:45:12,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958238482] [2024-11-28 04:45:12,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:45:12,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:45:12,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:12,540 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:45:12,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:45:12,540 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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) [2024-11-28 04:45:12,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:12,674 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2024-11-28 04:45:12,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:45:12,677 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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 [2024-11-28 04:45:12,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:12,678 INFO L225 Difference]: With dead ends: 39 [2024-11-28 04:45:12,678 INFO L226 Difference]: Without dead ends: 34 [2024-11-28 04:45:12,678 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:45:12,679 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 2 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:12,680 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 159 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:45:12,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-28 04:45:12,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2024-11-28 04:45:12,685 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) [2024-11-28 04:45:12,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2024-11-28 04:45:12,686 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 13 [2024-11-28 04:45:12,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:12,687 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2024-11-28 04:45:12,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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) [2024-11-28 04:45:12,687 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2024-11-28 04:45:12,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-28 04:45:12,688 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:12,688 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:12,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:45:12,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:12,889 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:12,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:12,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1958962901, now seen corresponding path program 2 times [2024-11-28 04:45:12,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:12,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309508087] [2024-11-28 04:45:12,890 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:45:12,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:13,048 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:45:13,048 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-28 04:45:13,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1564180187] [2024-11-28 04:45:13,060 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:45:13,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:13,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:13,063 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:45:13,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:45:20,267 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:45:20,267 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:45:20,271 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-28 04:45:20,279 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:45:28,576 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:28,576 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:46:57,003 WARN L286 SmtUtils]: Spent 52.66s on a formula simplification. DAG size of input: 123 DAG size of output: 120 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:47:31,198 WARN L286 SmtUtils]: Spent 6.14s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:48:23,716 WARN L286 SmtUtils]: Spent 22.35s on a formula simplification that was a NOOP. DAG size: 122 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:49:16,361 WARN L286 SmtUtils]: Spent 10.21s on a formula simplification. DAG size of input: 12 DAG size of output: 4 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:49:16,623 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:16,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:16,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309508087] [2024-11-28 04:49:16,624 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:49:16,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564180187] [2024-11-28 04:49:16,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564180187] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:49:16,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:49:16,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 13] total 17 [2024-11-28 04:49:16,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547474975] [2024-11-28 04:49:16,627 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:49:16,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 04:49:16,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:16,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 04:49:16,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=213, Unknown=5, NotChecked=0, Total=272 [2024-11-28 04:49:16,629 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 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) [2024-11-28 04:49:23,348 WARN L286 SmtUtils]: Spent 6.50s on a formula simplification. DAG size of input: 44 DAG size of output: 10 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:49:56,483 WARN L286 SmtUtils]: Spent 11.95s on a formula simplification. DAG size of input: 50 DAG size of output: 16 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:49:58,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:50:01,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:50:05,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:50:07,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:50:11,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:50:13,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:50:50,082 WARN L286 SmtUtils]: Spent 31.82s on a formula simplification. DAG size of input: 167 DAG size of output: 55 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:50:50,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:50,088 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2024-11-28 04:50:50,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:50:50,089 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 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 [2024-11-28 04:50:50,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:50,090 INFO L225 Difference]: With dead ends: 37 [2024-11-28 04:50:50,090 INFO L226 Difference]: Without dead ends: 20 [2024-11-28 04:50:50,090 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 195.9s TimeCoverageRelationStatistics Valid=77, Invalid=295, Unknown=8, NotChecked=0, Total=380 [2024-11-28 04:50:50,091 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 10 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:50,092 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 233 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 71 Invalid, 2 Unknown, 0 Unchecked, 17.7s Time] [2024-11-28 04:50:50,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-28 04:50:50,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-28 04:50:50,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.0) internal successors, (13), 13 states have internal predecessors, (13), 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) [2024-11-28 04:50:50,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2024-11-28 04:50:50,097 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 15 [2024-11-28 04:50:50,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:50,097 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2024-11-28 04:50:50,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 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) [2024-11-28 04:50:50,098 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2024-11-28 04:50:50,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-28 04:50:50,099 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:50,099 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:50:50,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 04:50:50,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:50,301 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:50:50,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:50,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1207264005, now seen corresponding path program 1 times [2024-11-28 04:50:50,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:50,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131903415] [2024-11-28 04:50:50,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:50,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:50,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:50:50,316 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:50:50,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:50:50,342 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 04:50:50,342 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 04:50:50,343 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-11-28 04:50:50,346 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-28 04:50:50,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:50:50,351 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2024-11-28 04:50:50,374 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 04:50:50,378 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:50:50 BoogieIcfgContainer [2024-11-28 04:50:50,378 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 04:50:50,379 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 04:50:50,379 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 04:50:50,379 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 04:50:50,380 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:45:11" (3/4) ... [2024-11-28 04:50:50,384 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-28 04:50:50,385 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 04:50:50,386 INFO L158 Benchmark]: Toolchain (without parser) took 340341.79ms. Allocated memory was 117.4MB in the beginning and 427.8MB in the end (delta: 310.4MB). Free memory was 94.4MB in the beginning and 308.7MB in the end (delta: -214.3MB). Peak memory consumption was 98.1MB. Max. memory is 16.1GB. [2024-11-28 04:50:50,387 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 167.8MB. Free memory is still 103.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:50:50,387 INFO L158 Benchmark]: CACSL2BoogieTranslator took 376.60ms. Allocated memory is still 117.4MB. Free memory was 94.1MB in the beginning and 82.3MB in the end (delta: 11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:50:50,387 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.82ms. Allocated memory is still 117.4MB. Free memory was 82.3MB in the beginning and 80.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:50:50,388 INFO L158 Benchmark]: Boogie Preprocessor took 48.30ms. Allocated memory is still 117.4MB. Free memory was 80.8MB in the beginning and 78.9MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:50:50,388 INFO L158 Benchmark]: RCFGBuilder took 551.71ms. Allocated memory is still 117.4MB. Free memory was 78.9MB in the beginning and 65.1MB in the end (delta: 13.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:50:50,389 INFO L158 Benchmark]: TraceAbstraction took 339300.75ms. Allocated memory was 117.4MB in the beginning and 427.8MB in the end (delta: 310.4MB). Free memory was 64.4MB in the beginning and 308.8MB in the end (delta: -244.5MB). Peak memory consumption was 64.5MB. Max. memory is 16.1GB. [2024-11-28 04:50:50,389 INFO L158 Benchmark]: Witness Printer took 6.25ms. Allocated memory is still 427.8MB. Free memory was 308.8MB in the beginning and 308.7MB in the end (delta: 87.0kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:50:50,391 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 167.8MB. Free memory is still 103.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 376.60ms. Allocated memory is still 117.4MB. Free memory was 94.1MB in the beginning and 82.3MB in the end (delta: 11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.82ms. Allocated memory is still 117.4MB. Free memory was 82.3MB in the beginning and 80.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 48.30ms. Allocated memory is still 117.4MB. Free memory was 80.8MB in the beginning and 78.9MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 551.71ms. Allocated memory is still 117.4MB. Free memory was 78.9MB in the beginning and 65.1MB in the end (delta: 13.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 339300.75ms. Allocated memory was 117.4MB in the beginning and 427.8MB in the end (delta: 310.4MB). Free memory was 64.4MB in the beginning and 308.8MB in the end (delta: -244.5MB). Peak memory consumption was 64.5MB. Max. memory is 16.1GB. * Witness Printer took 6.25ms. Allocated memory is still 427.8MB. Free memory was 308.8MB in the beginning and 308.7MB in the end (delta: 87.0kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 102]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 91, overapproximation of someBinaryDOUBLEComparisonOperation at line 101, overapproximation of someBinaryArithmeticFLOAToperation at line 80, overapproximation of someBinaryArithmeticFLOAToperation at line 95, overapproximation of someBinaryArithmeticFLOAToperation at line 85, overapproximation of someBinaryArithmeticFLOAToperation at line 93. Possible FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -0.4f && IN < 0.4f) [L75] COND FALSE !(!cond) [L91] RET assume_abort_if_not(IN > -0.4f && IN < 0.4f) [L93] CALL, EXPR f(IN) VAL [\old(x)=111] [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=111] [L93] RET, EXPR f(IN) VAL [IN=111] [L93] CALL, EXPR fp(IN) VAL [\old(x)=111] [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=111] [L93] RET, EXPR fp(IN) VAL [IN=111] [L93] float x = IN - f(IN)/fp(IN); [L95] CALL, EXPR f(x) VAL [\old(x)=110] [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=110] [L95] RET, EXPR f(x) VAL [IN=111, x=110] [L95] CALL, EXPR fp(x) VAL [\old(x)=110] [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=110] [L95] RET, EXPR fp(x) VAL [IN=111, x=110] [L95] x = x - f(x)/fp(x) [L101] COND TRUE !(x < 0.1) VAL [IN=111] [L102] reach_error() VAL [IN=111] - UnprovableResult [Line: 27]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 38 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 339.2s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 93.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 17.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 491 SdHoareTripleChecker+Invalid, 17.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 366 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 122 IncrementalHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 125 mSDtfsCounter, 122 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 196.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 7.4s SatisfiabilityAnalysisTime, 237.0s InterpolantComputationTime, 103 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 84 ConstructedInterpolants, 4 QuantifiedInterpolants, 3795 SizeOfPredicates, 0 NumberOfNonLiveVariables, 169 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 3/11 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-28 04:50:50,605 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2024-11-28 04:50:50,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_1+newton_2_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --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 0125703895252bbc87284f9ee87e686d5271b5cf813038cb613c1b0c2ad30cb5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:50:53,704 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:50:53,878 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-28 04:50:53,886 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:50:53,886 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:50:53,941 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:50:53,942 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:50:53,942 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:50:53,943 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:50:53,943 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:50:53,943 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:50:53,943 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:50:53,944 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:50:53,945 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:50:53,945 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:50:53,945 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:50:53,945 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:50:53,946 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:50:53,946 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:50:53,946 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:50:53,946 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:50:53,946 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:50:53,946 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:50:53,946 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 04:50:53,947 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-28 04:50:53,947 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-28 04:50:53,947 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:50:53,947 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:50:53,947 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:50:53,947 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:50:53,947 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:50:53,947 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:50:53,948 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:50:53,948 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:50:53,948 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:50:53,948 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:50:53,950 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:50:53,950 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:50:53,950 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:50:53,951 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:50:53,951 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:50:53,951 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:50:53,951 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:50:53,951 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:50:53,952 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-28 04:50:53,952 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-28 04:50:53,952 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:50:53,952 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:50:53,953 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:50:53,953 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:50:53,953 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness 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 -> 0125703895252bbc87284f9ee87e686d5271b5cf813038cb613c1b0c2ad30cb5 [2024-11-28 04:50:54,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:50:54,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:50:54,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:50:54,387 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:50:54,388 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:50:54,393 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/combinations/gcd_1+newton_2_2.i [2024-11-28 04:50:58,159 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/data/7fc28ff7a/bb86def8dd2e40ed9cb68cf20ecebf9d/FLAG3cabba292 [2024-11-28 04:50:58,433 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:50:58,434 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/sv-benchmarks/c/combinations/gcd_1+newton_2_2.i [2024-11-28 04:50:58,444 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/data/7fc28ff7a/bb86def8dd2e40ed9cb68cf20ecebf9d/FLAG3cabba292 [2024-11-28 04:50:58,464 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/data/7fc28ff7a/bb86def8dd2e40ed9cb68cf20ecebf9d [2024-11-28 04:50:58,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:50:58,470 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:50:58,472 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:50:58,472 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:50:58,479 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:50:58,482 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:50:58" (1/1) ... [2024-11-28 04:50:58,483 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c544bdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:58, skipping insertion in model container [2024-11-28 04:50:58,484 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:50:58" (1/1) ... [2024-11-28 04:50:58,505 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:50:58,693 WARN L250 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_af8a80df-0238-496c-a98d-078695eb8b5b/sv-benchmarks/c/combinations/gcd_1+newton_2_2.i[1226,1239] [2024-11-28 04:50:58,731 WARN L250 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_af8a80df-0238-496c-a98d-078695eb8b5b/sv-benchmarks/c/combinations/gcd_1+newton_2_2.i[2807,2820] [2024-11-28 04:50:58,732 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:50:58,750 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:50:58,765 WARN L250 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_af8a80df-0238-496c-a98d-078695eb8b5b/sv-benchmarks/c/combinations/gcd_1+newton_2_2.i[1226,1239] [2024-11-28 04:50:58,781 WARN L250 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_af8a80df-0238-496c-a98d-078695eb8b5b/sv-benchmarks/c/combinations/gcd_1+newton_2_2.i[2807,2820] [2024-11-28 04:50:58,782 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:50:58,804 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:50:58,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:58 WrapperNode [2024-11-28 04:50:58,805 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:50:58,806 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:50:58,806 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:50:58,806 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:50:58,816 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:58" (1/1) ... [2024-11-28 04:50:58,828 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:58" (1/1) ... [2024-11-28 04:50:58,854 INFO L138 Inliner]: procedures = 28, calls = 24, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 80 [2024-11-28 04:50:58,854 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:50:58,855 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:50:58,855 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:50:58,855 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:50:58,867 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:58" (1/1) ... [2024-11-28 04:50:58,867 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:58" (1/1) ... [2024-11-28 04:50:58,872 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:58" (1/1) ... [2024-11-28 04:50:58,889 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2024-11-28 04:50:58,889 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:58" (1/1) ... [2024-11-28 04:50:58,889 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:58" (1/1) ... [2024-11-28 04:50:58,900 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:58" (1/1) ... [2024-11-28 04:50:58,901 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:58" (1/1) ... [2024-11-28 04:50:58,906 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:58" (1/1) ... [2024-11-28 04:50:58,913 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:58" (1/1) ... [2024-11-28 04:50:58,914 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:58" (1/1) ... [2024-11-28 04:50:58,918 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:50:58,919 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:50:58,919 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:50:58,920 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:50:58,921 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:58" (1/1) ... [2024-11-28 04:50:58,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:50:58,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:58,972 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:50:58,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:50:59,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:50:59,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-28 04:50:59,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-28 04:50:59,018 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2024-11-28 04:50:59,018 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2024-11-28 04:50:59,019 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-28 04:50:59,019 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-28 04:50:59,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:50:59,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:50:59,137 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:50:59,140 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:51:13,082 INFO L? ?]: Removed 27 outVars from TransFormulas that were not future-live. [2024-11-28 04:51:13,082 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:51:13,096 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:51:13,096 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 04:51:13,097 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:51:13 BoogieIcfgContainer [2024-11-28 04:51:13,097 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:51:13,100 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:51:13,100 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:51:13,107 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:51:13,107 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:50:58" (1/3) ... [2024-11-28 04:51:13,108 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@181d33d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:51:13, skipping insertion in model container [2024-11-28 04:51:13,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:58" (2/3) ... [2024-11-28 04:51:13,108 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@181d33d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:51:13, skipping insertion in model container [2024-11-28 04:51:13,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:51:13" (3/3) ... [2024-11-28 04:51:13,110 INFO L128 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_2_2.i [2024-11-28 04:51:13,130 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:51:13,132 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG gcd_1+newton_2_2.i that has 3 procedures, 38 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2024-11-28 04:51:13,199 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:51:13,221 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@10499416, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:51:13,222 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-28 04:51:13,229 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 31 states have internal predecessors, (40), 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) [2024-11-28 04:51:13,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 04:51:13,238 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:13,239 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:51:13,240 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:51:13,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:13,248 INFO L85 PathProgramCache]: Analyzing trace with hash -246796359, now seen corresponding path program 1 times [2024-11-28 04:51:13,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:51:13,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [255732970] [2024-11-28 04:51:13,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:13,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:13,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:51:13,270 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:51:13,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:51:13,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:51:13,438 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 04:51:13,441 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:51:13,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:51:13,459 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:51:13,459 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:51:13,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255732970] [2024-11-28 04:51:13,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255732970] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:51:13,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:51:13,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:51:13,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386467187] [2024-11-28 04:51:13,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:51:13,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:51:13,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:51:13,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:51:13,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:51:13,487 INFO L87 Difference]: Start difference. First operand has 38 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 31 states have internal predecessors, (40), 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 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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) [2024-11-28 04:51:13,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:13,508 INFO L93 Difference]: Finished difference Result 67 states and 80 transitions. [2024-11-28 04:51:13,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:51:13,510 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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 [2024-11-28 04:51:13,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:13,515 INFO L225 Difference]: With dead ends: 67 [2024-11-28 04:51:13,515 INFO L226 Difference]: Without dead ends: 30 [2024-11-28 04:51:13,518 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:51:13,522 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:13,523 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:51:13,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-28 04:51:13,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-28 04:51:13,556 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) [2024-11-28 04:51:13,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2024-11-28 04:51:13,563 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 11 [2024-11-28 04:51:13,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:13,566 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2024-11-28 04:51:13,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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) [2024-11-28 04:51:13,566 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2024-11-28 04:51:13,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 04:51:13,569 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:13,571 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:51:13,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 04:51:13,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:13,772 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:51:13,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:13,773 INFO L85 PathProgramCache]: Analyzing trace with hash -250490443, now seen corresponding path program 1 times [2024-11-28 04:51:13,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:51:13,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [339085296] [2024-11-28 04:51:13,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:13,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:13,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:51:13,777 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:51:13,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:51:13,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:51:13,887 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:51:13,889 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:51:14,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:51:14,020 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:51:14,020 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:51:14,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339085296] [2024-11-28 04:51:14,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339085296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:51:14,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:51:14,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:51:14,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774105325] [2024-11-28 04:51:14,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:51:14,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:51:14,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:51:14,027 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:51:14,027 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:51:14,027 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. 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) [2024-11-28 04:51:14,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:14,154 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2024-11-28 04:51:14,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:51:14,156 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 [2024-11-28 04:51:14,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:14,157 INFO L225 Difference]: With dead ends: 39 [2024-11-28 04:51:14,157 INFO L226 Difference]: Without dead ends: 32 [2024-11-28 04:51:14,158 INFO L434 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 [2024-11-28 04:51:14,159 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 3 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:14,159 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 55 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:51:14,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-28 04:51:14,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2024-11-28 04:51:14,170 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) [2024-11-28 04:51:14,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2024-11-28 04:51:14,172 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 11 [2024-11-28 04:51:14,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:14,173 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2024-11-28 04:51:14,173 INFO L472 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) [2024-11-28 04:51:14,173 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2024-11-28 04:51:14,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-28 04:51:14,175 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:14,175 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:51:14,185 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:51:14,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:14,376 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:51:14,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:14,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1385408911, now seen corresponding path program 1 times [2024-11-28 04:51:14,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:51:14,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [315497654] [2024-11-28 04:51:14,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:14,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:14,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:51:14,381 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:51:14,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:51:14,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:51:14,522 INFO L256 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 04:51:14,527 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:51:15,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:51:15,183 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:51:16,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:51:16,007 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:51:16,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315497654] [2024-11-28 04:51:16,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315497654] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:51:16,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:51:16,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2024-11-28 04:51:16,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047122849] [2024-11-28 04:51:16,007 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:51:16,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:51:16,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:51:16,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:51:16,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:51:16,009 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:51:16,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:16,568 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2024-11-28 04:51:16,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:51:16,570 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-28 04:51:16,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:16,571 INFO L225 Difference]: With dead ends: 39 [2024-11-28 04:51:16,572 INFO L226 Difference]: Without dead ends: 34 [2024-11-28 04:51:16,572 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:51:16,573 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 3 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:16,574 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 204 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:51:16,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-28 04:51:16,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2024-11-28 04:51:16,580 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) [2024-11-28 04:51:16,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2024-11-28 04:51:16,581 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 13 [2024-11-28 04:51:16,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:16,582 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2024-11-28 04:51:16,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:51:16,582 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2024-11-28 04:51:16,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-28 04:51:16,583 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:16,583 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:51:16,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:51:16,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:16,784 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:51:16,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:16,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1958962901, now seen corresponding path program 2 times [2024-11-28 04:51:16,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:51:16,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [829794143] [2024-11-28 04:51:16,786 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:51:16,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:16,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:51:16,789 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:51:16,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:51:19,321 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:51:19,321 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:51:19,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 04:51:19,345 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:51:23,744 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:51:23,745 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:51:42,525 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:51:42,525 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:51:42,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829794143] [2024-11-28 04:51:42,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829794143] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:51:42,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:51:42,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 12] total 15 [2024-11-28 04:51:42,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371550708] [2024-11-28 04:51:42,526 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:51:42,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 04:51:42,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:51:42,528 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 04:51:42,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:51:42,528 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 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) [2024-11-28 04:51:46,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.03s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:51:48,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:51:52,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:51:56,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:51:59,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.58s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:52:15,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:52:19,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:19,181 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2024-11-28 04:52:19,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:52:19,182 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 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 [2024-11-28 04:52:19,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:19,183 INFO L225 Difference]: With dead ends: 51 [2024-11-28 04:52:19,183 INFO L226 Difference]: Without dead ends: 37 [2024-11-28 04:52:19,183 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 31.8s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:52:19,184 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 18 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 6 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:19,185 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 188 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 74 Invalid, 3 Unknown, 0 Unchecked, 22.5s Time] [2024-11-28 04:52:19,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-28 04:52:19,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-28 04:52:19,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 30 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) [2024-11-28 04:52:19,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2024-11-28 04:52:19,194 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 15 [2024-11-28 04:52:19,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:19,194 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2024-11-28 04:52:19,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 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) [2024-11-28 04:52:19,196 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2024-11-28 04:52:19,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-28 04:52:19,199 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:19,199 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:52:19,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 04:52:19,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:19,400 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:19,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:19,400 INFO L85 PathProgramCache]: Analyzing trace with hash -967923739, now seen corresponding path program 1 times [2024-11-28 04:52:19,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:52:19,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [817613332] [2024-11-28 04:52:19,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:19,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:19,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:52:19,404 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:52:19,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:52:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:21,721 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 04:52:21,725 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:52:22,959 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 04:52:22,959 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:52:42,952 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:52:42,952 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:52:42,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817613332] [2024-11-28 04:52:42,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817613332] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:52:42,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:52:42,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10] total 13 [2024-11-28 04:52:42,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216608603] [2024-11-28 04:52:42,953 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:52:42,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:52:42,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:52:42,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:52:42,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:52:42,954 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 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) [2024-11-28 04:52:43,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:43,253 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2024-11-28 04:52:43,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:52:43,261 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 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 19 [2024-11-28 04:52:43,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:43,261 INFO L225 Difference]: With dead ends: 37 [2024-11-28 04:52:43,262 INFO L226 Difference]: Without dead ends: 20 [2024-11-28 04:52:43,262 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:52:43,263 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:43,263 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 221 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:52:43,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-28 04:52:43,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-28 04:52:43,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.0) internal successors, (13), 13 states have internal predecessors, (13), 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) [2024-11-28 04:52:43,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2024-11-28 04:52:43,272 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 19 [2024-11-28 04:52:43,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:43,272 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2024-11-28 04:52:43,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 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) [2024-11-28 04:52:43,272 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2024-11-28 04:52:43,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-28 04:52:43,276 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:43,276 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:52:43,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 04:52:43,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:43,477 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:43,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:43,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1207264005, now seen corresponding path program 1 times [2024-11-28 04:52:43,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:52:43,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1974081854] [2024-11-28 04:52:43,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:43,478 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 [2024-11-28 04:52:43,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 04:52:43,480 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-28 04:52:43,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af8a80df-0238-496c-a98d-078695eb8b5b/bin/uautomizer-verify-aQ6SnzHsRB/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