./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_3+newton_3_5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6349188-37ee-4e11-a459-24fcb6a5bbb6/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6349188-37ee-4e11-a459-24fcb6a5bbb6/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6349188-37ee-4e11-a459-24fcb6a5bbb6/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6349188-37ee-4e11-a459-24fcb6a5bbb6/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_3+newton_3_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6349188-37ee-4e11-a459-24fcb6a5bbb6/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6349188-37ee-4e11-a459-24fcb6a5bbb6/bin/uautomizer-DrprNOufMa --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 41039e1ca02f0c1a8ce2142160f9ec0f4ca3178e082edea8dc4d2cb9edc06efd --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 19:20:55,343 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 19:20:55,344 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 19:20:55,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 19:20:55,368 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 19:20:55,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 19:20:55,370 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 19:20:55,372 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 19:20:55,374 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 19:20:55,375 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 19:20:55,376 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 19:20:55,377 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 19:20:55,377 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 19:20:55,378 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 19:20:55,379 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 19:20:55,380 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 19:20:55,381 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 19:20:55,382 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 19:20:55,383 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 19:20:55,385 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 19:20:55,387 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 19:20:55,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 19:20:55,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 19:20:55,390 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 19:20:55,393 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 19:20:55,393 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 19:20:55,393 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 19:20:55,394 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 19:20:55,394 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 19:20:55,395 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 19:20:55,396 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 19:20:55,396 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 19:20:55,397 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 19:20:55,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 19:20:55,398 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 19:20:55,399 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 19:20:55,399 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 19:20:55,400 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 19:20:55,400 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 19:20:55,401 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 19:20:55,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 19:20:55,402 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6349188-37ee-4e11-a459-24fcb6a5bbb6/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 19:20:55,426 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 19:20:55,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 19:20:55,427 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 19:20:55,427 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 19:20:55,428 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 19:20:55,428 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 19:20:55,428 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 19:20:55,429 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 19:20:55,429 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 19:20:55,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 19:20:55,429 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 19:20:55,430 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 19:20:55,430 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 19:20:55,430 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 19:20:55,430 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 19:20:55,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 19:20:55,430 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 19:20:55,431 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 19:20:55,431 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 19:20:55,431 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 19:20:55,431 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 19:20:55,431 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 19:20:55,432 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 19:20:55,432 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 19:20:55,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:20:55,432 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 19:20:55,432 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 19:20:55,433 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 19:20:55,433 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 19:20:55,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 19:20:55,433 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 19:20:55,433 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 19:20:55,434 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 19:20:55,434 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 19:20:55,434 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6349188-37ee-4e11-a459-24fcb6a5bbb6/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6349188-37ee-4e11-a459-24fcb6a5bbb6/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41039e1ca02f0c1a8ce2142160f9ec0f4ca3178e082edea8dc4d2cb9edc06efd [2021-12-06 19:20:55,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 19:20:55,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 19:20:55,658 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 19:20:55,659 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 19:20:55,659 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 19:20:55,660 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6349188-37ee-4e11-a459-24fcb6a5bbb6/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/combinations/gcd_3+newton_3_5.i [2021-12-06 19:20:55,701 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6349188-37ee-4e11-a459-24fcb6a5bbb6/bin/uautomizer-DrprNOufMa/data/a05614ad9/3aefbc1d7e4c4a1f82cf15b9b79b28e0/FLAG42f11207b [2021-12-06 19:20:56,075 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 19:20:56,075 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6349188-37ee-4e11-a459-24fcb6a5bbb6/sv-benchmarks/c/combinations/gcd_3+newton_3_5.i [2021-12-06 19:20:56,080 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6349188-37ee-4e11-a459-24fcb6a5bbb6/bin/uautomizer-DrprNOufMa/data/a05614ad9/3aefbc1d7e4c4a1f82cf15b9b79b28e0/FLAG42f11207b [2021-12-06 19:20:56,089 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6349188-37ee-4e11-a459-24fcb6a5bbb6/bin/uautomizer-DrprNOufMa/data/a05614ad9/3aefbc1d7e4c4a1f82cf15b9b79b28e0 [2021-12-06 19:20:56,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 19:20:56,092 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 19:20:56,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 19:20:56,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 19:20:56,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 19:20:56,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:20:56" (1/1) ... [2021-12-06 19:20:56,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56933121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:20:56, skipping insertion in model container [2021-12-06 19:20:56,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:20:56" (1/1) ... [2021-12-06 19:20:56,105 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 19:20:56,121 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 19:20:56,241 WARN L230 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_c6349188-37ee-4e11-a459-24fcb6a5bbb6/sv-benchmarks/c/combinations/gcd_3+newton_3_5.i[1226,1239] [2021-12-06 19:20:56,267 WARN L230 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_c6349188-37ee-4e11-a459-24fcb6a5bbb6/sv-benchmarks/c/combinations/gcd_3+newton_3_5.i[2862,2875] [2021-12-06 19:20:56,268 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:20:56,276 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 19:20:56,285 WARN L230 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_c6349188-37ee-4e11-a459-24fcb6a5bbb6/sv-benchmarks/c/combinations/gcd_3+newton_3_5.i[1226,1239] [2021-12-06 19:20:56,296 WARN L230 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_c6349188-37ee-4e11-a459-24fcb6a5bbb6/sv-benchmarks/c/combinations/gcd_3+newton_3_5.i[2862,2875] [2021-12-06 19:20:56,297 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:20:56,307 INFO L208 MainTranslator]: Completed translation [2021-12-06 19:20:56,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:20:56 WrapperNode [2021-12-06 19:20:56,307 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 19:20:56,308 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 19:20:56,308 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 19:20:56,308 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 19:20:56,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:20:56" (1/1) ... [2021-12-06 19:20:56,322 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:20:56" (1/1) ... [2021-12-06 19:20:56,343 INFO L137 Inliner]: procedures = 27, calls = 18, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 82 [2021-12-06 19:20:56,343 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 19:20:56,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 19:20:56,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 19:20:56,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 19:20:56,352 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:20:56" (1/1) ... [2021-12-06 19:20:56,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:20:56" (1/1) ... [2021-12-06 19:20:56,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:20:56" (1/1) ... [2021-12-06 19:20:56,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:20:56" (1/1) ... [2021-12-06 19:20:56,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:20:56" (1/1) ... [2021-12-06 19:20:56,364 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:20:56" (1/1) ... [2021-12-06 19:20:56,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:20:56" (1/1) ... [2021-12-06 19:20:56,368 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 19:20:56,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 19:20:56,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 19:20:56,370 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 19:20:56,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:20:56" (1/1) ... [2021-12-06 19:20:56,378 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:20:56,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6349188-37ee-4e11-a459-24fcb6a5bbb6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:20:56,397 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6349188-37ee-4e11-a459-24fcb6a5bbb6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 19:20:56,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6349188-37ee-4e11-a459-24fcb6a5bbb6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 19:20:56,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 19:20:56,433 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2021-12-06 19:20:56,433 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2021-12-06 19:20:56,433 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-12-06 19:20:56,433 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-12-06 19:20:56,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 19:20:56,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 19:20:56,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 19:20:56,485 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 19:20:56,487 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 19:20:56,603 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 19:20:56,608 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 19:20:56,608 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 19:20:56,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:20:56 BoogieIcfgContainer [2021-12-06 19:20:56,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 19:20:56,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 19:20:56,611 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 19:20:56,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 19:20:56,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 07:20:56" (1/3) ... [2021-12-06 19:20:56,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71079f7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:20:56, skipping insertion in model container [2021-12-06 19:20:56,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:20:56" (2/3) ... [2021-12-06 19:20:56,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71079f7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:20:56, skipping insertion in model container [2021-12-06 19:20:56,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:20:56" (3/3) ... [2021-12-06 19:20:56,616 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_3_5.i [2021-12-06 19:20:56,620 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 19:20:56,620 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-06 19:20:56,654 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 19:20:56,659 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 19:20:56,659 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-06 19:20:56,672 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) [2021-12-06 19:20:56,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-06 19:20:56,677 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:20:56,677 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:20:56,677 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:20:56,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:20:56,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1709385323, now seen corresponding path program 1 times [2021-12-06 19:20:56,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:20:56,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985492845] [2021-12-06 19:20:56,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:20:56,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:20:56,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:20:56,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:20:56,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:20:56,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985492845] [2021-12-06 19:20:56,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985492845] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:20:56,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:20:56,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:20:56,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729631780] [2021-12-06 19:20:56,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:20:56,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:20:56,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:20:56,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:20:56,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:20:56,856 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) [2021-12-06 19:20:56,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:20:56,899 INFO L93 Difference]: Finished difference Result 96 states and 120 transitions. [2021-12-06 19:20:56,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 19:20:56,901 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 [2021-12-06 19:20:56,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:20:56,906 INFO L225 Difference]: With dead ends: 96 [2021-12-06 19:20:56,906 INFO L226 Difference]: Without dead ends: 39 [2021-12-06 19:20:56,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:20:56,912 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 23 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:20:56,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 134 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:20:56,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-12-06 19:20:56,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2021-12-06 19:20:56,938 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) [2021-12-06 19:20:56,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2021-12-06 19:20:56,940 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 11 [2021-12-06 19:20:56,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:20:56,940 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2021-12-06 19:20:56,940 INFO L471 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) [2021-12-06 19:20:56,941 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2021-12-06 19:20:56,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-06 19:20:56,942 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:20:56,942 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:20:56,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 19:20:56,942 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:20:56,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:20:56,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1776235347, now seen corresponding path program 1 times [2021-12-06 19:20:56,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:20:56,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130415491] [2021-12-06 19:20:56,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:20:56,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:20:56,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:20:56,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:20:56,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:20:56,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130415491] [2021-12-06 19:20:56,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130415491] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:20:56,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:20:56,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:20:56,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402862279] [2021-12-06 19:20:56,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:20:56,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:20:56,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:20:56,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:20:56,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:20:57,000 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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) [2021-12-06 19:20:57,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:20:57,047 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2021-12-06 19:20:57,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:20:57,047 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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 [2021-12-06 19:20:57,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:20:57,048 INFO L225 Difference]: With dead ends: 39 [2021-12-06 19:20:57,048 INFO L226 Difference]: Without dead ends: 33 [2021-12-06 19:20:57,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:20:57,050 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 7 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:20:57,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 155 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:20:57,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-12-06 19:20:57,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-12-06 19:20:57,055 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) [2021-12-06 19:20:57,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2021-12-06 19:20:57,056 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 11 [2021-12-06 19:20:57,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:20:57,056 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2021-12-06 19:20:57,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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) [2021-12-06 19:20:57,056 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2021-12-06 19:20:57,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 19:20:57,057 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:20:57,057 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:20:57,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 19:20:57,057 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:20:57,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:20:57,058 INFO L85 PathProgramCache]: Analyzing trace with hash 830014046, now seen corresponding path program 1 times [2021-12-06 19:20:57,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:20:57,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266366395] [2021-12-06 19:20:57,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:20:57,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:20:57,069 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:20:57,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [564210134] [2021-12-06 19:20:57,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:20:57,069 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:20:57,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6349188-37ee-4e11-a459-24fcb6a5bbb6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:20:57,070 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6349188-37ee-4e11-a459-24fcb6a5bbb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:20:57,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6349188-37ee-4e11-a459-24fcb6a5bbb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 19:20:57,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:20:57,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-06 19:20:57,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:21:22,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:21:22,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:21:25,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:21:25,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:21:25,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266366395] [2021-12-06 19:21:25,978 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:21:25,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564210134] [2021-12-06 19:21:25,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564210134] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:21:25,979 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:21:25,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-12-06 19:21:25,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250954935] [2021-12-06 19:21:25,979 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:21:25,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 19:21:25,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:21:25,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 19:21:25,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=211, Unknown=7, NotChecked=0, Total=272 [2021-12-06 19:21:25,980 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:21:26,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:21:26,141 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2021-12-06 19:21:26,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 19:21:26,141 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-06 19:21:26,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:21:26,142 INFO L225 Difference]: With dead ends: 41 [2021-12-06 19:21:26,142 INFO L226 Difference]: Without dead ends: 35 [2021-12-06 19:21:26,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 27.0s TimeCoverageRelationStatistics Valid=63, Invalid=236, Unknown=7, NotChecked=0, Total=306 [2021-12-06 19:21:26,144 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 5 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:21:26,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 291 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 19 Unchecked, 0.0s Time] [2021-12-06 19:21:26,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-12-06 19:21:26,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2021-12-06 19:21:26,148 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) [2021-12-06 19:21:26,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2021-12-06 19:21:26,149 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 12 [2021-12-06 19:21:26,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:21:26,149 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2021-12-06 19:21:26,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:21:26,150 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2021-12-06 19:21:26,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 19:21:26,150 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:21:26,150 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:21:26,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6349188-37ee-4e11-a459-24fcb6a5bbb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 19:21:26,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6349188-37ee-4e11-a459-24fcb6a5bbb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:21:26,352 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:21:26,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:21:26,354 INFO L85 PathProgramCache]: Analyzing trace with hash 20667420, now seen corresponding path program 1 times [2021-12-06 19:21:26,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:21:26,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213544491] [2021-12-06 19:21:26,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:21:26,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:21:26,380 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:21:26,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [168698479] [2021-12-06 19:21:26,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:21:26,381 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:21:26,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6349188-37ee-4e11-a459-24fcb6a5bbb6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:21:26,385 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6349188-37ee-4e11-a459-24fcb6a5bbb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:21:26,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6349188-37ee-4e11-a459-24fcb6a5bbb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 19:21:26,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:21:26,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-06 19:21:26,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:21:56,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:21:56,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:22:06,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:22:06,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:22:06,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213544491] [2021-12-06 19:22:06,135 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:22:06,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168698479] [2021-12-06 19:22:06,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168698479] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:22:06,136 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:22:06,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-12-06 19:22:06,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080954231] [2021-12-06 19:22:06,136 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:22:06,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-06 19:22:06,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:22:06,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 19:22:06,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=173, Unknown=14, NotChecked=0, Total=240 [2021-12-06 19:22:06,138 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 16 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:06,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:22:06,867 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2021-12-06 19:22:06,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 19:22:06,867 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-06 19:22:06,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:22:06,868 INFO L225 Difference]: With dead ends: 46 [2021-12-06 19:22:06,868 INFO L226 Difference]: Without dead ends: 37 [2021-12-06 19:22:06,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 38.4s TimeCoverageRelationStatistics Valid=62, Invalid=196, Unknown=14, NotChecked=0, Total=272 [2021-12-06 19:22:06,870 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 6 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:22:06,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 281 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 36 Unchecked, 0.2s Time] [2021-12-06 19:22:06,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-12-06 19:22:06,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2021-12-06 19:22:06,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 25 states have (on average 1.12) internal successors, (28), 26 states have internal predecessors, (28), 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) [2021-12-06 19:22:06,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2021-12-06 19:22:06,875 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 12 [2021-12-06 19:22:06,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:22:06,875 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2021-12-06 19:22:06,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:22:06,876 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2021-12-06 19:22:06,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-06 19:22:06,876 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:22:06,876 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:22:06,895 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6349188-37ee-4e11-a459-24fcb6a5bbb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 19:22:07,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6349188-37ee-4e11-a459-24fcb6a5bbb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:22:07,078 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:22:07,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:22:07,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1518646018, now seen corresponding path program 2 times [2021-12-06 19:22:07,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:22:07,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343784609] [2021-12-06 19:22:07,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:22:07,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:22:07,113 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:22:07,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1133086664] [2021-12-06 19:22:07,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:22:07,115 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:22:07,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6349188-37ee-4e11-a459-24fcb6a5bbb6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:22:07,117 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6349188-37ee-4e11-a459-24fcb6a5bbb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:22:07,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6349188-37ee-4e11-a459-24fcb6a5bbb6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 19:22:07,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:22:07,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:22:07,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 36 conjunts are in the unsatisfiable core [2021-12-06 19:22:07,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:23:33,501 WARN L227 SmtUtils]: Spent 5.03s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:24:23,316 WARN L227 SmtUtils]: Spent 5.05s on a formula simplification that was a NOOP. DAG size: 11 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:24:49,330 WARN L227 SmtUtils]: Spent 5.06s on a formula simplification that was a NOOP. DAG size: 7 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:25:07,132 WARN L227 SmtUtils]: Spent 5.02s on a formula simplification that was a NOOP. DAG size: 12 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:25:25,747 WARN L227 SmtUtils]: Spent 5.04s on a formula simplification that was a NOOP. DAG size: 10 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:25:44,530 WARN L227 SmtUtils]: Spent 5.08s on a formula simplification that was a NOOP. DAG size: 7 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:26:25,281 WARN L227 SmtUtils]: Spent 5.06s on a formula simplification that was a NOOP. DAG size: 4 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:26:30,456 WARN L227 SmtUtils]: Spent 5.06s on a formula simplification that was a NOOP. DAG size: 10 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:26:36,008 WARN L227 SmtUtils]: Spent 5.02s on a formula simplification that was a NOOP. DAG size: 7 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:26:41,198 WARN L227 SmtUtils]: Spent 5.04s on a formula simplification that was a NOOP. DAG size: 11 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:26:54,758 WARN L227 SmtUtils]: Spent 5.09s on a formula simplification that was a NOOP. DAG size: 10 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:27:00,754 WARN L227 SmtUtils]: Spent 5.07s on a formula simplification that was a NOOP. DAG size: 11 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:27:14,304 WARN L227 SmtUtils]: Spent 5.08s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:27:54,243 WARN L227 SmtUtils]: Spent 5.54s on a formula simplification that was a NOOP. DAG size: 13 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:27:59,438 WARN L227 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 11 DAG size of output: 1 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:28:04,551 WARN L227 SmtUtils]: Spent 5.04s on a formula simplification that was a NOOP. DAG size: 14 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:28:10,592 WARN L227 SmtUtils]: Spent 5.00s on a formula simplification that was a NOOP. DAG size: 15 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:28:19,282 WARN L227 SmtUtils]: Spent 5.03s on a formula simplification that was a NOOP. DAG size: 14 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:28:26,952 WARN L227 SmtUtils]: Spent 5.00s on a formula simplification that was a NOOP. DAG size: 13 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:28:35,265 WARN L227 SmtUtils]: Spent 5.02s on a formula simplification that was a NOOP. DAG size: 13 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:28:40,613 WARN L227 SmtUtils]: Spent 5.02s on a formula simplification that was a NOOP. DAG size: 14 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:28:49,802 WARN L227 SmtUtils]: Spent 5.03s on a formula simplification that was a NOOP. DAG size: 7 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:28:55,842 WARN L227 SmtUtils]: Spent 5.05s on a formula simplification that was a NOOP. DAG size: 14 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:29:05,941 WARN L227 SmtUtils]: Spent 5.07s on a formula simplification that was a NOOP. DAG size: 13 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:33:14,956 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:33:14,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:35:17,912 WARN L227 SmtUtils]: Spent 1.51m on a formula simplification. DAG size of input: 85 DAG size of output: 57 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 19:36:10,525 WARN L860 $PredicateComparison]: unable to prove that (or (<= |c_ULTIMATE.start_main1_~x~0#1| 0) (= |c_ULTIMATE.start_gcd_test_~b#1| 0) (let ((.cse18 (mod |c_ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse24 (mod (+ (* |c_ULTIMATE.start_gcd_test_~b#1| 255) .cse18) 256))) (let ((.cse27 (+ (- 256) .cse24))) (let ((.cse26 (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse27) 256)) (.cse28 (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse24) 256))) (let ((.cse1 (= .cse24 0)) (.cse2 (not (= (mod (mod .cse24 .cse28) 256) 0))) (.cse3 (<= .cse28 |c_ULTIMATE.start_main1_~x~0#1|)) (.cse12 (not (= (mod (mod .cse27 .cse26) 256) 0))) (.cse0 (<= 0 |c_ULTIMATE.start_gcd_test_~a#1|)) (.cse13 (<= .cse26 |c_ULTIMATE.start_main1_~x~0#1|)) (.cse25 (mod (+ |c_ULTIMATE.start_gcd_test_~b#1| .cse18) 256))) (let ((.cse11 (<= .cse24 127)) (.cse9 (< 127 .cse25)) (.cse14 (or .cse12 .cse0 .cse13)) (.cse7 (<= .cse25 127)) (.cse6 (< |c_ULTIMATE.start_gcd_test_~b#1| 0)) (.cse8 (or .cse0 .cse1 .cse2 .cse3)) (.cse10 (< 127 .cse24)) (.cse17 (< |c_ULTIMATE.start_gcd_test_~a#1| 0)) (.cse16 (mod .cse18 256))) (and (or (let ((.cse4 (= .cse18 0)) (.cse5 (let ((.cse15 (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse16) 256))) (or (<= .cse15 |c_ULTIMATE.start_main1_~x~0#1|) (not (= (mod (mod .cse16 .cse15) 256) 0)) .cse17 (= 0 .cse16))))) (and (or (and (or (and (or .cse0 .cse1 .cse2 .cse3 .cse4) .cse5) .cse6 .cse7) (or .cse6 (and .cse8 .cse5) .cse9)) .cse10) (or .cse11 (and (or .cse6 (and .cse5 (or .cse12 .cse0 .cse13 .cse4))) (or (and .cse14 .cse5) .cse6 .cse7))))) (< 127 .cse16)) (or (<= .cse16 127) (let ((.cse20 (let ((.cse22 (+ (- 256) .cse16))) (let ((.cse23 (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse22) 256))) (or (not (= (mod (mod .cse22 .cse23) 256) 0)) .cse17 (<= .cse23 |c_ULTIMATE.start_main1_~x~0#1|)))))) (and (or .cse11 (let ((.cse19 (and .cse14 .cse20))) (and (or .cse19 .cse6 .cse7) (or .cse19 .cse6 .cse9)))) (or (let ((.cse21 (and .cse8 .cse20))) (and (or .cse6 .cse7 .cse21) (or .cse6 .cse21))) .cse10)))))))))))) is different from true