./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_2+newton_3_7.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_2+newton_3_7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 803cbc2ab2fb54f2ccf794a1cf55b1df2243f22f996d0e59d0f49967facf7958 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 18:29:11,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:29:11,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:29:11,132 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:29:11,136 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:29:11,141 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:29:11,146 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:29:11,149 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:29:11,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:29:11,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:29:11,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:29:11,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:29:11,165 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:29:11,168 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:29:11,170 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:29:11,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:29:11,176 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:29:11,177 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:29:11,181 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:29:11,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:29:11,192 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:29:11,195 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:29:11,197 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:29:11,198 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:29:11,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:29:11,208 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:29:11,209 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:29:11,211 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:29:11,212 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:29:11,214 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:29:11,215 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:29:11,216 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:29:11,219 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:29:11,222 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:29:11,224 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:29:11,225 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:29:11,226 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:29:11,226 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:29:11,227 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:29:11,228 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:29:11,229 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:29:11,230 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 18:29:11,277 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:29:11,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:29:11,278 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:29:11,278 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:29:11,279 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:29:11,280 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:29:11,281 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:29:11,281 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:29:11,281 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:29:11,282 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:29:11,283 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:29:11,283 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:29:11,284 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:29:11,284 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:29:11,284 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:29:11,285 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:29:11,285 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:29:11,285 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:29:11,286 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:29:11,286 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:29:11,286 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:29:11,287 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:29:11,287 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:29:11,287 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:29:11,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:29:11,288 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:29:11,288 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:29:11,289 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:29:11,290 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:29:11,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:29:11,290 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:29:11,291 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:29:11,291 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:29:11,291 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:29:11,292 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 803cbc2ab2fb54f2ccf794a1cf55b1df2243f22f996d0e59d0f49967facf7958 [2022-11-25 18:29:11,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:29:11,699 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:29:11,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:29:11,703 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:29:11,704 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:29:11,705 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/combinations/gcd_2+newton_3_7.i [2022-11-25 18:29:15,002 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:29:15,213 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:29:15,214 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/sv-benchmarks/c/combinations/gcd_2+newton_3_7.i [2022-11-25 18:29:15,224 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/data/619f8867a/db3230cb942849f2843d3187587830b7/FLAG59f161e30 [2022-11-25 18:29:15,243 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/data/619f8867a/db3230cb942849f2843d3187587830b7 [2022-11-25 18:29:15,247 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:29:15,249 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:29:15,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:29:15,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:29:15,256 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:29:15,257 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:29:15" (1/1) ... [2022-11-25 18:29:15,258 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fe27c01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:15, skipping insertion in model container [2022-11-25 18:29:15,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:29:15" (1/1) ... [2022-11-25 18:29:15,268 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:29:15,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:29:15,487 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/sv-benchmarks/c/combinations/gcd_2+newton_3_7.i[1226,1239] [2022-11-25 18:29:15,518 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/sv-benchmarks/c/combinations/gcd_2+newton_3_7.i[2862,2875] [2022-11-25 18:29:15,520 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:29:15,534 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:29:15,555 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/sv-benchmarks/c/combinations/gcd_2+newton_3_7.i[1226,1239] [2022-11-25 18:29:15,574 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/sv-benchmarks/c/combinations/gcd_2+newton_3_7.i[2862,2875] [2022-11-25 18:29:15,576 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:29:15,593 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:29:15,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:15 WrapperNode [2022-11-25 18:29:15,594 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:29:15,598 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:29:15,598 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:29:15,598 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:29:15,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:15" (1/1) ... [2022-11-25 18:29:15,619 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:15" (1/1) ... [2022-11-25 18:29:15,655 INFO L138 Inliner]: procedures = 27, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 90 [2022-11-25 18:29:15,658 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:29:15,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:29:15,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:29:15,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:29:15,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:15" (1/1) ... [2022-11-25 18:29:15,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:15" (1/1) ... [2022-11-25 18:29:15,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:15" (1/1) ... [2022-11-25 18:29:15,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:15" (1/1) ... [2022-11-25 18:29:15,698 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:15" (1/1) ... [2022-11-25 18:29:15,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:15" (1/1) ... [2022-11-25 18:29:15,713 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:15" (1/1) ... [2022-11-25 18:29:15,727 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:15" (1/1) ... [2022-11-25 18:29:15,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:29:15,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:29:15,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:29:15,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:29:15,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:15" (1/1) ... [2022-11-25 18:29:15,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:29:15,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:29:15,784 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:29:15,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:29:15,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:29:15,836 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-11-25 18:29:15,836 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-11-25 18:29:15,838 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-25 18:29:15,838 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-25 18:29:15,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:29:15,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:29:15,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:29:15,930 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:29:15,933 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:29:16,249 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:29:16,262 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:29:16,265 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 18:29:16,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:29:16 BoogieIcfgContainer [2022-11-25 18:29:16,268 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:29:16,271 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:29:16,273 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:29:16,279 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:29:16,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:29:15" (1/3) ... [2022-11-25 18:29:16,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c22da01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:29:16, skipping insertion in model container [2022-11-25 18:29:16,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:15" (2/3) ... [2022-11-25 18:29:16,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c22da01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:29:16, skipping insertion in model container [2022-11-25 18:29:16,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:29:16" (3/3) ... [2022-11-25 18:29:16,288 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_3_7.i [2022-11-25 18:29:16,311 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:29:16,311 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 18:29:16,367 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:29:16,375 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@48f66f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:29:16,375 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 18:29:16,380 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 31 states have internal predecessors, (40), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-25 18:29:16,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 18:29:16,389 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:29:16,390 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:29:16,391 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:29:16,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:29:16,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1709385323, now seen corresponding path program 1 times [2022-11-25 18:29:16,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:29:16,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064016721] [2022-11-25 18:29:16,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:29:16,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:29:16,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:29:16,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:29:16,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:29:16,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064016721] [2022-11-25 18:29:16,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064016721] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:29:16,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:29:16,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:29:16,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748962396] [2022-11-25 18:29:16,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:29:16,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:29:16,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:29:16,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:29:16,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:29:16,748 INFO L87 Difference]: Start difference. First operand has 40 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 31 states have internal predecessors, (40), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:29:16,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:29:16,830 INFO L93 Difference]: Finished difference Result 96 states and 121 transitions. [2022-11-25 18:29:16,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:29:16,832 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-25 18:29:16,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:29:16,840 INFO L225 Difference]: With dead ends: 96 [2022-11-25 18:29:16,841 INFO L226 Difference]: Without dead ends: 39 [2022-11-25 18:29:16,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:29:16,848 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 30 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:29:16,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 122 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:29:16,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-25 18:29:16,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2022-11-25 18:29:16,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-25 18:29:16,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2022-11-25 18:29:16,897 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 11 [2022-11-25 18:29:16,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:29:16,898 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2022-11-25 18:29:16,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:29:16,898 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2022-11-25 18:29:16,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 18:29:16,900 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:29:16,900 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:29:16,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:29:16,901 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:29:16,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:29:16,902 INFO L85 PathProgramCache]: Analyzing trace with hash 65622039, now seen corresponding path program 1 times [2022-11-25 18:29:16,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:29:16,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9278150] [2022-11-25 18:29:16,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:29:16,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:29:16,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:29:17,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:29:17,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:29:17,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9278150] [2022-11-25 18:29:17,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9278150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:29:17,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:29:17,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:29:17,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023905482] [2022-11-25 18:29:17,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:29:17,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:29:17,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:29:17,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:29:17,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:29:17,059 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:29:17,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:29:17,090 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-11-25 18:29:17,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:29:17,120 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-25 18:29:17,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:29:17,120 INFO L225 Difference]: With dead ends: 39 [2022-11-25 18:29:17,120 INFO L226 Difference]: Without dead ends: 33 [2022-11-25 18:29:17,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:29:17,122 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 4 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:29:17,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 97 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:29:17,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-25 18:29:17,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-25 18:29:17,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-25 18:29:17,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2022-11-25 18:29:17,130 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 11 [2022-11-25 18:29:17,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:29:17,131 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2022-11-25 18:29:17,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:29:17,131 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2022-11-25 18:29:17,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-25 18:29:17,132 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:29:17,132 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:29:17,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 18:29:17,133 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:29:17,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:29:17,134 INFO L85 PathProgramCache]: Analyzing trace with hash -659390950, now seen corresponding path program 1 times [2022-11-25 18:29:17,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:29:17,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509078405] [2022-11-25 18:29:17,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:29:17,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:29:17,166 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:29:17,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [111201175] [2022-11-25 18:29:17,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:29:17,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:29:17,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:29:17,179 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:29:17,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 18:29:17,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:29:17,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 18:29:17,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:29:17,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:29:17,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:29:17,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:29:17,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:29:17,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509078405] [2022-11-25 18:29:17,463 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:29:17,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111201175] [2022-11-25 18:29:17,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111201175] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:29:17,464 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:29:17,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2022-11-25 18:29:17,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022848643] [2022-11-25 18:29:17,465 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:29:17,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 18:29:17,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:29:17,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 18:29:17,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:29:17,467 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:29:17,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:29:17,575 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2022-11-25 18:29:17,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:29:17,576 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-25 18:29:17,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:29:17,577 INFO L225 Difference]: With dead ends: 40 [2022-11-25 18:29:17,577 INFO L226 Difference]: Without dead ends: 34 [2022-11-25 18:29:17,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-25 18:29:17,579 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 7 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:29:17,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 214 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:29:17,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-25 18:29:17,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-25 18:29:17,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.125) internal successors, (27), 25 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-25 18:29:17,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2022-11-25 18:29:17,588 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 12 [2022-11-25 18:29:17,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:29:17,588 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2022-11-25 18:29:17,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:29:17,589 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2022-11-25 18:29:17,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-25 18:29:17,590 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:29:17,590 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:29:17,608 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-25 18:29:17,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:29:17,797 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:29:17,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:29:17,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1659957129, now seen corresponding path program 2 times [2022-11-25 18:29:17,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:29:17,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493639374] [2022-11-25 18:29:17,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:29:17,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:29:17,812 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:29:17,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [101623026] [2022-11-25 18:29:17,813 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:29:17,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:29:17,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:29:17,831 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:29:17,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 18:29:17,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 18:29:17,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:29:17,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 18:29:17,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:29:29,209 WARN L233 SmtUtils]: Spent 9.96s on a formula simplification. DAG size of input: 72 DAG size of output: 40 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:29:30,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:29:30,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:31:38,916 WARN L233 SmtUtils]: Spent 1.91m on a formula simplification. DAG size of input: 129 DAG size of output: 35 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:31:40,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:31:40,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:31:40,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493639374] [2022-11-25 18:31:40,138 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:31:40,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101623026] [2022-11-25 18:31:40,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101623026] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:31:40,139 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:31:40,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-25 18:31:40,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599710663] [2022-11-25 18:31:40,139 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:31:40,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-25 18:31:40,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:31:40,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-25 18:31:40,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=195, Unknown=1, NotChecked=0, Total=240 [2022-11-25 18:31:40,142 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 16 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:31:52,891 WARN L233 SmtUtils]: Spent 11.57s on a formula simplification that was a NOOP. DAG size: 74 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:31:54,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0, 1] [2022-11-25 18:31:56,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0, 1] [2022-11-25 18:31:58,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0, 1] [2022-11-25 18:32:00,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0, 1] [2022-11-25 18:32:16,657 WARN L233 SmtUtils]: Spent 13.31s on a formula simplification. DAG size of input: 48 DAG size of output: 47 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:32:43,522 WARN L233 SmtUtils]: Spent 26.25s on a formula simplification. DAG size of input: 52 DAG size of output: 51 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:33:09,882 WARN L233 SmtUtils]: Spent 23.88s on a formula simplification. DAG size of input: 56 DAG size of output: 55 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:33:40,709 WARN L233 SmtUtils]: Spent 28.54s on a formula simplification. DAG size of input: 59 DAG size of output: 58 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:33:42,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:33:42,934 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2022-11-25 18:33:42,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 18:33:42,935 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-25 18:33:42,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:33:42,936 INFO L225 Difference]: With dead ends: 46 [2022-11-25 18:33:42,937 INFO L226 Difference]: Without dead ends: 36 [2022-11-25 18:33:42,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 243.9s TimeCoverageRelationStatistics Valid=169, Invalid=479, Unknown=2, NotChecked=0, Total=650 [2022-11-25 18:33:42,939 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 40 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-25 18:33:42,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 294 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 73 Invalid, 2 Unknown, 0 Unchecked, 8.9s Time] [2022-11-25 18:33:42,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-25 18:33:42,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-11-25 18:33:42,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 27 states have internal predecessors, (29), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-25 18:33:42,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2022-11-25 18:33:42,950 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 13 [2022-11-25 18:33:42,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:33:42,951 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2022-11-25 18:33:42,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:33:42,951 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2022-11-25 18:33:42,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-25 18:33:42,952 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:33:42,952 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:33:42,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 18:33:43,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:33:43,153 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:33:43,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:33:43,154 INFO L85 PathProgramCache]: Analyzing trace with hash -2084161321, now seen corresponding path program 3 times [2022-11-25 18:33:43,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:33:43,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990125906] [2022-11-25 18:33:43,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:33:43,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:33:43,166 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:33:43,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1039438381] [2022-11-25 18:33:43,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 18:33:43,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:33:43,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:33:43,168 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:33:43,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 18:33:43,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-25 18:33:43,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:33:43,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-25 18:33:43,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:34:00,937 WARN L233 SmtUtils]: Spent 10.66s on a formula simplification. DAG size of input: 55 DAG size of output: 49 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:34:51,633 WARN L233 SmtUtils]: Spent 32.72s on a formula simplification that was a NOOP. DAG size: 98 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:35:52,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:35:52,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990125906] [2022-11-25 18:35:52,846 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:35:52,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039438381] [2022-11-25 18:35:52,846 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-11-25 18:35:52,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 139 [2022-11-25 18:35:52,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-25 18:35:53,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:35:53,047 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:258) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.UndoableWrapperScript.pop(UndoableWrapperScript.java:61) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:67) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:625) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:370) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:649) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:184) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:198) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:361) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:306) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 53 more [2022-11-25 18:35:53,052 INFO L158 Benchmark]: Toolchain (without parser) took 397803.12ms. Allocated memory is still 186.6MB. Free memory was 140.0MB in the beginning and 64.0MB in the end (delta: 75.9MB). Peak memory consumption was 76.8MB. Max. memory is 16.1GB. [2022-11-25 18:35:53,052 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 146.8MB. Free memory is still 87.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:35:53,053 INFO L158 Benchmark]: CACSL2BoogieTranslator took 343.88ms. Allocated memory is still 186.6MB. Free memory was 139.2MB in the beginning and 128.2MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 18:35:53,053 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.19ms. Allocated memory is still 186.6MB. Free memory was 128.2MB in the beginning and 126.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 18:35:53,053 INFO L158 Benchmark]: Boogie Preprocessor took 71.79ms. Allocated memory is still 186.6MB. Free memory was 126.5MB in the beginning and 124.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 18:35:53,054 INFO L158 Benchmark]: RCFGBuilder took 537.29ms. Allocated memory is still 186.6MB. Free memory was 124.5MB in the beginning and 111.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 18:35:53,054 INFO L158 Benchmark]: TraceAbstraction took 396780.40ms. Allocated memory is still 186.6MB. Free memory was 111.9MB in the beginning and 64.0MB in the end (delta: 47.9MB). Peak memory consumption was 49.5MB. Max. memory is 16.1GB. [2022-11-25 18:35:53,056 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 146.8MB. Free memory is still 87.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 343.88ms. Allocated memory is still 186.6MB. Free memory was 139.2MB in the beginning and 128.2MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.19ms. Allocated memory is still 186.6MB. Free memory was 128.2MB in the beginning and 126.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.79ms. Allocated memory is still 186.6MB. Free memory was 126.5MB in the beginning and 124.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 537.29ms. Allocated memory is still 186.6MB. Free memory was 124.5MB in the beginning and 111.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 396780.40ms. Allocated memory is still 186.6MB. Free memory was 111.9MB in the beginning and 64.0MB in the end (delta: 47.9MB). Peak memory consumption was 49.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_2+newton_3_7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 803cbc2ab2fb54f2ccf794a1cf55b1df2243f22f996d0e59d0f49967facf7958 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 18:35:55,363 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:35:55,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:35:55,406 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:35:55,406 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:35:55,410 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:35:55,412 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:35:55,415 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:35:55,418 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:35:55,424 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:35:55,425 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:35:55,428 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:35:55,428 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:35:55,431 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:35:55,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:35:55,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:35:55,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:35:55,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:35:55,443 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:35:55,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:35:55,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:35:55,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:35:55,455 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:35:55,456 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:35:55,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:35:55,465 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:35:55,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:35:55,467 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:35:55,468 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:35:55,469 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:35:55,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:35:55,471 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:35:55,475 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:35:55,476 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:35:55,491 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:35:55,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:35:55,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:35:55,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:35:55,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:35:55,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:35:55,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:35:55,501 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-25 18:35:55,546 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:35:55,546 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:35:55,548 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:35:55,548 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:35:55,549 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:35:55,550 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:35:55,550 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:35:55,551 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:35:55,551 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:35:55,551 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:35:55,553 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:35:55,553 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:35:55,553 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:35:55,553 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:35:55,554 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:35:55,554 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:35:55,554 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 18:35:55,554 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 18:35:55,555 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 18:35:55,555 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:35:55,555 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:35:55,555 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:35:55,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:35:55,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:35:55,556 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:35:55,556 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:35:55,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:35:55,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:35:55,557 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:35:55,558 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:35:55,558 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-25 18:35:55,558 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 18:35:55,559 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:35:55,559 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:35:55,559 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:35:55,559 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:35:55,559 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-25 18:35:55,559 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 803cbc2ab2fb54f2ccf794a1cf55b1df2243f22f996d0e59d0f49967facf7958 [2022-11-25 18:35:55,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:35:56,026 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:35:56,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:35:56,033 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:35:56,034 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:35:56,035 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/combinations/gcd_2+newton_3_7.i [2022-11-25 18:35:59,163 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:35:59,443 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:35:59,444 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/sv-benchmarks/c/combinations/gcd_2+newton_3_7.i [2022-11-25 18:35:59,452 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/data/b7c2ce644/d11cf7cbb2ad4bc08c11b9d0cd1b504e/FLAG94c9223b4 [2022-11-25 18:35:59,476 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/data/b7c2ce644/d11cf7cbb2ad4bc08c11b9d0cd1b504e [2022-11-25 18:35:59,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:35:59,482 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:35:59,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:35:59,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:35:59,491 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:35:59,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:35:59" (1/1) ... [2022-11-25 18:35:59,495 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60d747d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:35:59, skipping insertion in model container [2022-11-25 18:35:59,495 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:35:59" (1/1) ... [2022-11-25 18:35:59,504 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:35:59,539 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:35:59,756 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/sv-benchmarks/c/combinations/gcd_2+newton_3_7.i[1226,1239] [2022-11-25 18:35:59,819 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/sv-benchmarks/c/combinations/gcd_2+newton_3_7.i[2862,2875] [2022-11-25 18:35:59,825 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:35:59,842 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:35:59,870 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/sv-benchmarks/c/combinations/gcd_2+newton_3_7.i[1226,1239] [2022-11-25 18:35:59,895 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/sv-benchmarks/c/combinations/gcd_2+newton_3_7.i[2862,2875] [2022-11-25 18:35:59,898 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:35:59,918 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:35:59,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:35:59 WrapperNode [2022-11-25 18:35:59,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:35:59,920 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:35:59,921 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:35:59,921 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:35:59,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:35:59" (1/1) ... [2022-11-25 18:35:59,959 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:35:59" (1/1) ... [2022-11-25 18:35:59,998 INFO L138 Inliner]: procedures = 28, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 85 [2022-11-25 18:35:59,999 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:36:00,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:36:00,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:36:00,002 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:36:00,013 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:35:59" (1/1) ... [2022-11-25 18:36:00,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:35:59" (1/1) ... [2022-11-25 18:36:00,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:35:59" (1/1) ... [2022-11-25 18:36:00,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:35:59" (1/1) ... [2022-11-25 18:36:00,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:35:59" (1/1) ... [2022-11-25 18:36:00,057 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:35:59" (1/1) ... [2022-11-25 18:36:00,059 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:35:59" (1/1) ... [2022-11-25 18:36:00,071 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:35:59" (1/1) ... [2022-11-25 18:36:00,074 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:36:00,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:36:00,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:36:00,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:36:00,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:35:59" (1/1) ... [2022-11-25 18:36:00,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:36:00,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:36:00,117 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:36:00,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:36:00,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:36:00,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 18:36:00,176 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-11-25 18:36:00,176 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-11-25 18:36:00,176 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-25 18:36:00,176 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-25 18:36:00,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:36:00,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:36:00,263 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:36:00,265 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:36:10,522 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:36:10,529 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:36:10,529 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 18:36:10,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:36:10 BoogieIcfgContainer [2022-11-25 18:36:10,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:36:10,535 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:36:10,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:36:10,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:36:10,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:35:59" (1/3) ... [2022-11-25 18:36:10,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@726c2033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:36:10, skipping insertion in model container [2022-11-25 18:36:10,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:35:59" (2/3) ... [2022-11-25 18:36:10,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@726c2033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:36:10, skipping insertion in model container [2022-11-25 18:36:10,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:36:10" (3/3) ... [2022-11-25 18:36:10,543 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_3_7.i [2022-11-25 18:36:10,563 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:36:10,564 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 18:36:10,629 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:36:10,636 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@412850e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:36:10,636 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 18:36:10,641 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 31 states have internal predecessors, (40), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-25 18:36:10,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 18:36:10,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:36:10,651 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:36:10,651 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:36:10,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:36:10,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1709385323, now seen corresponding path program 1 times [2022-11-25 18:36:10,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:36:10,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2086834496] [2022-11-25 18:36:10,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:36:10,675 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:36:10,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:36:10,711 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:36:10,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-25 18:36:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:36:10,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:36:10,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:36:10,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:36:10,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:36:10,987 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:36:10,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2086834496] [2022-11-25 18:36:10,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2086834496] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:36:10,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:36:10,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:36:10,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113751633] [2022-11-25 18:36:10,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:36:10,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:36:10,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:36:11,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:36:11,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:36:11,036 INFO L87 Difference]: Start difference. First operand has 40 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 31 states have internal predecessors, (40), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:36:11,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:36:11,147 INFO L93 Difference]: Finished difference Result 74 states and 94 transitions. [2022-11-25 18:36:11,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:36:11,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-25 18:36:11,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:36:11,157 INFO L225 Difference]: With dead ends: 74 [2022-11-25 18:36:11,157 INFO L226 Difference]: Without dead ends: 33 [2022-11-25 18:36:11,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:36:11,164 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:36:11,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:36:11,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-25 18:36:11,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-25 18:36:11,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-25 18:36:11,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2022-11-25 18:36:11,205 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 11 [2022-11-25 18:36:11,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:36:11,205 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2022-11-25 18:36:11,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:36:11,206 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2022-11-25 18:36:11,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 18:36:11,207 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:36:11,208 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:36:11,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-25 18:36:11,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:36:11,421 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:36:11,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:36:11,422 INFO L85 PathProgramCache]: Analyzing trace with hash 65622039, now seen corresponding path program 1 times [2022-11-25 18:36:11,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:36:11,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808748446] [2022-11-25 18:36:11,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:36:11,423 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:36:11,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:36:11,424 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:36:11,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-25 18:36:11,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:36:11,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:36:11,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:36:11,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:36:11,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:36:11,636 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:36:11,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808748446] [2022-11-25 18:36:11,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808748446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:36:11,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:36:11,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:36:11,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64831242] [2022-11-25 18:36:11,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:36:11,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:36:11,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:36:11,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:36:11,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:36:11,641 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:36:11,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:36:11,816 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2022-11-25 18:36:11,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:36:11,817 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-25 18:36:11,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:36:11,818 INFO L225 Difference]: With dead ends: 40 [2022-11-25 18:36:11,818 INFO L226 Difference]: Without dead ends: 34 [2022-11-25 18:36:11,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:36:11,820 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 4 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:36:11,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 99 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:36:11,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-25 18:36:11,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2022-11-25 18:36:11,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-25 18:36:11,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2022-11-25 18:36:11,827 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 11 [2022-11-25 18:36:11,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:36:11,828 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2022-11-25 18:36:11,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:36:11,828 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2022-11-25 18:36:11,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-25 18:36:11,829 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:36:11,829 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:36:11,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-25 18:36:12,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:36:12,030 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:36:12,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:36:12,030 INFO L85 PathProgramCache]: Analyzing trace with hash 149955676, now seen corresponding path program 1 times [2022-11-25 18:36:12,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:36:12,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1271583156] [2022-11-25 18:36:12,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:36:12,031 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:36:12,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:36:12,034 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:36:12,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-25 18:36:12,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:36:12,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:36:12,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:36:12,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:36:12,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:36:12,257 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:36:12,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1271583156] [2022-11-25 18:36:12,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1271583156] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:36:12,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:36:12,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:36:12,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840280490] [2022-11-25 18:36:12,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:36:12,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:36:12,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:36:12,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:36:12,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:36:12,260 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:36:12,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:36:12,378 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2022-11-25 18:36:12,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:36:12,379 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-25 18:36:12,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:36:12,380 INFO L225 Difference]: With dead ends: 41 [2022-11-25 18:36:12,380 INFO L226 Difference]: Without dead ends: 33 [2022-11-25 18:36:12,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:36:12,381 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 2 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:36:12,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 99 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:36:12,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-25 18:36:12,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-25 18:36:12,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-25 18:36:12,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2022-11-25 18:36:12,388 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 12 [2022-11-25 18:36:12,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:36:12,389 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2022-11-25 18:36:12,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:36:12,389 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2022-11-25 18:36:12,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-25 18:36:12,390 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:36:12,390 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:36:12,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-25 18:36:12,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:36:12,604 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:36:12,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:36:12,604 INFO L85 PathProgramCache]: Analyzing trace with hash -659390950, now seen corresponding path program 1 times [2022-11-25 18:36:12,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:36:12,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [680286247] [2022-11-25 18:36:12,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:36:12,605 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:36:12,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:36:12,611 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:36:12,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-25 18:36:12,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:36:12,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 18:36:12,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:36:13,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:36:13,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:36:14,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:36:14,288 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:36:14,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [680286247] [2022-11-25 18:36:14,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [680286247] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:36:14,289 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:36:14,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-25 18:36:14,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474027598] [2022-11-25 18:36:14,290 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:36:14,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 18:36:14,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:36:14,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 18:36:14,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-25 18:36:14,292 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 14 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:36:16,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:36:16,904 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2022-11-25 18:36:16,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 18:36:16,905 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-25 18:36:16,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:36:16,906 INFO L225 Difference]: With dead ends: 50 [2022-11-25 18:36:16,906 INFO L226 Difference]: Without dead ends: 36 [2022-11-25 18:36:16,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2022-11-25 18:36:16,909 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 30 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:36:16,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 265 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-25 18:36:16,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-25 18:36:16,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-11-25 18:36:16,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 27 states have internal predecessors, (29), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-25 18:36:16,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2022-11-25 18:36:16,918 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 12 [2022-11-25 18:36:16,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:36:16,919 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2022-11-25 18:36:16,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:36:16,919 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2022-11-25 18:36:16,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-25 18:36:16,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:36:16,920 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:36:16,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-25 18:36:17,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:36:17,128 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:36:17,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:36:17,129 INFO L85 PathProgramCache]: Analyzing trace with hash -2084161321, now seen corresponding path program 2 times [2022-11-25 18:36:17,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:36:17,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1344340081] [2022-11-25 18:36:17,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:36:17,130 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:36:17,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:36:17,131 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:36:17,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668d290c-0bf7-4ffc-a05b-aac08ca87e63/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-25 18:36:23,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 18:36:23,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:36:23,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-25 18:36:23,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:37:18,054 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:37:18,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:40:05,934 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:40:05,934 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:40:05,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1344340081] [2022-11-25 18:40:05,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1344340081] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:40:05,935 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:40:05,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-25 18:40:05,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182149017] [2022-11-25 18:40:05,936 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:40:05,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-25 18:40:05,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:40:05,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-25 18:40:05,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=427, Unknown=41, NotChecked=0, Total=552 [2022-11-25 18:40:05,939 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 24 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:40:09,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:40:12,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-25 18:40:33,729 WARN L233 SmtUtils]: Spent 9.29s on a formula simplification. DAG size of input: 40 DAG size of output: 22 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:40:50,071 WARN L233 SmtUtils]: Spent 7.68s on a formula simplification. DAG size of input: 29 DAG size of output: 25 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:40:52,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:40:53,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:40:55,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:40:57,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:40:59,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-25 18:41:02,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:41:04,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-25 18:41:07,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-25 18:41:09,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-25 18:41:21,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:41:24,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:41:26,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-25 18:41:30,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:42:10,117 WARN L233 SmtUtils]: Spent 19.32s on a formula simplification. DAG size of input: 41 DAG size of output: 39 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:42:11,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-25 18:42:19,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:42:21,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:42:23,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:42:25,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-25 18:42:28,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:43:30,873 WARN L233 SmtUtils]: Spent 38.34s on a formula simplification. DAG size of input: 48 DAG size of output: 46 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:43:34,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:43:38,177 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse7 ((_ sign_extend 24) |c_ULTIMATE.start_gcd_test_~a#1|)) (.cse2 ((_ sign_extend 24) |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse18 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse7 .cse2))))) (let ((.cse16 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse2 .cse18)))) (.cse1 ((_ sign_extend 24) |c_ULTIMATE.start_main1_~y~0#1|))) (let ((.cse3 (= .cse18 (_ bv0 32))) (.cse0 (not (bvsgt .cse1 (_ bv0 32)))) (.cse17 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse18 .cse16))))) (and (or .cse0 (bvsge .cse1 .cse2) (not .cse3)) (or (forall ((|ULTIMATE.start_gcd_test_~a#1| (_ BitVec 8))) (let ((.cse6 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem ((_ sign_extend 24) ((_ extract 7 0) (bvneg ((_ sign_extend 24) |ULTIMATE.start_gcd_test_~a#1|)))) .cse2))))) (let ((.cse4 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse2 .cse6))))) (let ((.cse5 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse6 .cse4))))) (or (not (= ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse4 .cse5))) (_ bv0 32))) (bvsge .cse1 .cse5) (= .cse4 (_ bv0 32))))))) (bvslt .cse2 (_ bv0 32)) .cse0) (or .cse0 (bvsge .cse1 .cse7)) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_12| (_ BitVec 8))) (let ((.cse10 ((_ sign_extend 24) |v_ULTIMATE.start_gcd_test_~a#1_12|))) (let ((.cse11 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem ((_ sign_extend 24) ((_ extract 7 0) (bvneg .cse10))) .cse1))))) (let ((.cse9 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse1 .cse11))))) (let ((.cse8 ((_ extract 7 0) (bvsrem .cse11 .cse9)))) (and (= |c_ULTIMATE.start_gcd_test_~a#1| .cse8) (= ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse9 ((_ sign_extend 24) .cse8)))) (_ bv0 32)) (not (= (_ bv0 32) .cse9)) (bvslt .cse10 (_ bv0 32)))))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_12| (_ BitVec 8))) (let ((.cse15 ((_ sign_extend 24) |v_ULTIMATE.start_gcd_test_~a#1_12|))) (let ((.cse14 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem ((_ sign_extend 24) ((_ extract 7 0) (bvneg .cse15))) .cse1))))) (let ((.cse12 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse1 .cse14))))) (let ((.cse13 ((_ extract 7 0) (bvsrem .cse14 .cse12)))) (and (= ((_ extract 7 0) (bvsrem .cse12 ((_ sign_extend 24) .cse13))) |c_ULTIMATE.start_gcd_test_~b#1|) (= |c_ULTIMATE.start_gcd_test_~a#1| .cse13) (not (= .cse14 (_ bv0 32))) (not (= (_ bv0 32) .cse12)) (bvslt .cse15 (_ bv0 32)))))))) (or (bvsge .cse1 .cse16) .cse3 .cse0 (not (= .cse17 (_ bv0 32)))) (or (= .cse16 (_ bv0 32)) .cse0 (bvsge .cse1 .cse17) (not (= ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse16 .cse17))) (_ bv0 32)))) (not (bvslt .cse1 (_ bv0 32)))))))) is different from false [2022-11-25 18:43:41,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:43:43,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:43:45,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:43:48,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-25 18:43:50,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:43:53,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]