./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/rangesum.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_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/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_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/reducercommutativity/rangesum.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/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_65be46cc-2e14-413d-bcc9-4d717e4fb757/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 4dc91bf2fc8981aab63c1ee768384f1c8f580edfe4618d65089a78f799b6ddb8 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 01:07:40,508 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 01:07:40,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 01:07:40,540 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 01:07:40,540 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 01:07:40,541 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 01:07:40,542 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 01:07:40,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 01:07:40,546 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 01:07:40,547 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 01:07:40,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 01:07:40,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 01:07:40,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 01:07:40,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 01:07:40,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 01:07:40,552 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 01:07:40,553 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 01:07:40,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 01:07:40,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 01:07:40,558 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 01:07:40,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 01:07:40,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 01:07:40,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 01:07:40,563 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 01:07:40,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 01:07:40,566 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 01:07:40,566 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 01:07:40,567 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 01:07:40,567 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 01:07:40,568 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 01:07:40,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 01:07:40,569 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 01:07:40,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 01:07:40,571 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 01:07:40,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 01:07:40,572 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 01:07:40,572 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 01:07:40,572 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 01:07:40,573 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 01:07:40,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 01:07:40,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 01:07:40,575 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 01:07:40,598 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 01:07:40,598 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 01:07:40,599 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 01:07:40,599 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 01:07:40,600 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 01:07:40,600 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 01:07:40,600 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 01:07:40,601 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 01:07:40,601 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 01:07:40,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 01:07:40,601 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 01:07:40,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 01:07:40,602 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 01:07:40,602 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 01:07:40,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 01:07:40,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 01:07:40,602 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 01:07:40,603 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 01:07:40,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 01:07:40,606 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 01:07:40,607 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 01:07:40,607 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 01:07:40,607 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 01:07:40,607 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 01:07:40,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:07:40,608 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 01:07:40,608 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 01:07:40,608 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 01:07:40,608 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 01:07:40,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 01:07:40,609 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 01:07:40,609 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 01:07:40,609 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 01:07:40,609 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 01:07:40,609 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_65be46cc-2e14-413d-bcc9-4d717e4fb757/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4dc91bf2fc8981aab63c1ee768384f1c8f580edfe4618d65089a78f799b6ddb8 [2021-12-07 01:07:40,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 01:07:40,801 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 01:07:40,803 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 01:07:40,803 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 01:07:40,804 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 01:07:40,805 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/reducercommutativity/rangesum.i [2021-12-07 01:07:40,845 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/data/a9457ee03/81176b18a332459888181eb782c6643c/FLAG7b015d2c8 [2021-12-07 01:07:41,221 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 01:07:41,221 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/sv-benchmarks/c/reducercommutativity/rangesum.i [2021-12-07 01:07:41,226 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/data/a9457ee03/81176b18a332459888181eb782c6643c/FLAG7b015d2c8 [2021-12-07 01:07:41,236 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/data/a9457ee03/81176b18a332459888181eb782c6643c [2021-12-07 01:07:41,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 01:07:41,238 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 01:07:41,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 01:07:41,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 01:07:41,242 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 01:07:41,242 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:07:41" (1/1) ... [2021-12-07 01:07:41,243 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b33f22f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:07:41, skipping insertion in model container [2021-12-07 01:07:41,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:07:41" (1/1) ... [2021-12-07 01:07:41,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 01:07:41,259 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 01:07:41,384 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_65be46cc-2e14-413d-bcc9-4d717e4fb757/sv-benchmarks/c/reducercommutativity/rangesum.i[1544,1557] [2021-12-07 01:07:41,387 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:07:41,392 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 01:07:41,408 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_65be46cc-2e14-413d-bcc9-4d717e4fb757/sv-benchmarks/c/reducercommutativity/rangesum.i[1544,1557] [2021-12-07 01:07:41,409 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:07:41,419 INFO L208 MainTranslator]: Completed translation [2021-12-07 01:07:41,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:07:41 WrapperNode [2021-12-07 01:07:41,419 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 01:07:41,420 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 01:07:41,420 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 01:07:41,420 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 01:07:41,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:07:41" (1/1) ... [2021-12-07 01:07:41,431 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:07:41" (1/1) ... [2021-12-07 01:07:41,447 INFO L137 Inliner]: procedures = 17, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 73 [2021-12-07 01:07:41,447 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 01:07:41,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 01:07:41,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 01:07:41,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 01:07:41,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:07:41" (1/1) ... [2021-12-07 01:07:41,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:07:41" (1/1) ... [2021-12-07 01:07:41,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:07:41" (1/1) ... [2021-12-07 01:07:41,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:07:41" (1/1) ... [2021-12-07 01:07:41,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:07:41" (1/1) ... [2021-12-07 01:07:41,469 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:07:41" (1/1) ... [2021-12-07 01:07:41,470 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:07:41" (1/1) ... [2021-12-07 01:07:41,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 01:07:41,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 01:07:41,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 01:07:41,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 01:07:41,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:07:41" (1/1) ... [2021-12-07 01:07:41,481 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:07:41,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:07:41,498 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 01:07:41,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 01:07:41,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 01:07:41,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 01:07:41,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-07 01:07:41,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-07 01:07:41,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 01:07:41,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 01:07:41,530 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-07 01:07:41,530 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2021-12-07 01:07:41,530 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2021-12-07 01:07:41,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-07 01:07:41,579 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 01:07:41,580 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 01:07:41,685 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 01:07:41,695 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 01:07:41,696 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-07 01:07:41,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:07:41 BoogieIcfgContainer [2021-12-07 01:07:41,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 01:07:41,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 01:07:41,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 01:07:41,701 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 01:07:41,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:07:41" (1/3) ... [2021-12-07 01:07:41,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35defbac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:07:41, skipping insertion in model container [2021-12-07 01:07:41,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:07:41" (2/3) ... [2021-12-07 01:07:41,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35defbac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:07:41, skipping insertion in model container [2021-12-07 01:07:41,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:07:41" (3/3) ... [2021-12-07 01:07:41,703 INFO L111 eAbstractionObserver]: Analyzing ICFG rangesum.i [2021-12-07 01:07:41,707 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 01:07:41,707 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 01:07:41,743 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 01:07:41,748 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 [2021-12-07 01:07:41,749 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 01:07:41,762 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 25 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-07 01:07:41,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-07 01:07:41,766 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:07:41,768 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:07:41,768 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:07:41,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:07:41,773 INFO L85 PathProgramCache]: Analyzing trace with hash 2094119026, now seen corresponding path program 1 times [2021-12-07 01:07:41,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:07:41,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243352237] [2021-12-07 01:07:41,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:07:41,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:07:41,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:41,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 01:07:41,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:41,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 01:07:41,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:41,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-07 01:07:41,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:41,913 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-07 01:07:41,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:07:41,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243352237] [2021-12-07 01:07:41,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243352237] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:07:41,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:07:41,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 01:07:41,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275132184] [2021-12-07 01:07:41,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:07:41,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-07 01:07:41,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:07:41,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-07 01:07:41,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 01:07:41,943 INFO L87 Difference]: Start difference. First operand has 30 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 25 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-07 01:07:41,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:07:41,957 INFO L93 Difference]: Finished difference Result 55 states and 77 transitions. [2021-12-07 01:07:41,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-07 01:07:41,959 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 30 [2021-12-07 01:07:41,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:07:41,964 INFO L225 Difference]: With dead ends: 55 [2021-12-07 01:07:41,965 INFO L226 Difference]: Without dead ends: 25 [2021-12-07 01:07:41,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 01:07:41,970 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:07:41,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:07:41,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-12-07 01:07:41,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-12-07 01:07:41,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-07 01:07:41,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2021-12-07 01:07:41,998 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 30 [2021-12-07 01:07:41,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:07:41,998 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2021-12-07 01:07:41,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-07 01:07:41,998 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2021-12-07 01:07:42,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-07 01:07:42,000 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:07:42,000 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:07:42,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 01:07:42,001 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:07:42,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:07:42,001 INFO L85 PathProgramCache]: Analyzing trace with hash -2142996165, now seen corresponding path program 1 times [2021-12-07 01:07:42,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:07:42,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330795273] [2021-12-07 01:07:42,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:07:42,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:07:42,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:42,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 01:07:42,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:07:42,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330795273] [2021-12-07 01:07:42,052 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-07 01:07:42,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201621452] [2021-12-07 01:07:42,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:07:42,052 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:07:42,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:07:42,053 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:07:42,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-07 01:07:42,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:42,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 01:07:42,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:07:42,176 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-07 01:07:42,176 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:07:42,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201621452] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:07:42,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:07:42,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:07:42,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688950026] [2021-12-07 01:07:42,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:07:42,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:07:42,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:07:42,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:07:42,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:07:42,180 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-07 01:07:42,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:07:42,195 INFO L93 Difference]: Finished difference Result 49 states and 67 transitions. [2021-12-07 01:07:42,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:07:42,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2021-12-07 01:07:42,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:07:42,197 INFO L225 Difference]: With dead ends: 49 [2021-12-07 01:07:42,198 INFO L226 Difference]: Without dead ends: 31 [2021-12-07 01:07:42,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:07:42,200 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 5 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:07:42,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 57 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:07:42,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-12-07 01:07:42,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2021-12-07 01:07:42,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-07 01:07:42,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2021-12-07 01:07:42,211 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 30 [2021-12-07 01:07:42,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:07:42,211 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2021-12-07 01:07:42,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-07 01:07:42,211 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2021-12-07 01:07:42,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-07 01:07:42,213 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:07:42,213 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:07:42,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-07 01:07:42,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:07:42,415 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:07:42,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:07:42,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1650095802, now seen corresponding path program 1 times [2021-12-07 01:07:42,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:07:42,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643415122] [2021-12-07 01:07:42,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:07:42,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:07:42,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:42,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-07 01:07:42,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:42,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 01:07:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:42,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-07 01:07:42,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:42,569 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-07 01:07:42,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:07:42,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643415122] [2021-12-07 01:07:42,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643415122] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:07:42,570 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:07:42,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:07:42,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360599727] [2021-12-07 01:07:42,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:07:42,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:07:42,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:07:42,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:07:42,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:07:42,572 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-07 01:07:42,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:07:42,594 INFO L93 Difference]: Finished difference Result 55 states and 71 transitions. [2021-12-07 01:07:42,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:07:42,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 30 [2021-12-07 01:07:42,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:07:42,595 INFO L225 Difference]: With dead ends: 55 [2021-12-07 01:07:42,595 INFO L226 Difference]: Without dead ends: 31 [2021-12-07 01:07:42,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:07:42,597 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 1 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:07:42,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 47 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:07:42,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-12-07 01:07:42,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2021-12-07 01:07:42,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-07 01:07:42,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2021-12-07 01:07:42,602 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 30 [2021-12-07 01:07:42,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:07:42,602 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2021-12-07 01:07:42,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-07 01:07:42,602 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2021-12-07 01:07:42,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-07 01:07:42,603 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:07:42,603 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:07:42,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-07 01:07:42,603 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:07:42,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:07:42,604 INFO L85 PathProgramCache]: Analyzing trace with hash 655585368, now seen corresponding path program 1 times [2021-12-07 01:07:42,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:07:42,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245589546] [2021-12-07 01:07:42,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:07:42,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:07:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:42,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-07 01:07:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:42,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 01:07:42,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:42,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-07 01:07:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:42,661 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-07 01:07:42,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:07:42,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245589546] [2021-12-07 01:07:42,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245589546] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:07:42,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167918037] [2021-12-07 01:07:42,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:07:42,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:07:42,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:07:42,662 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:07:42,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-07 01:07:42,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:42,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 01:07:42,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:07:42,782 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-07 01:07:42,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:07:42,836 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-07 01:07:42,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167918037] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:07:42,837 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:07:42,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2021-12-07 01:07:42,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669700067] [2021-12-07 01:07:42,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:07:42,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-07 01:07:42,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:07:42,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-07 01:07:42,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-12-07 01:07:42,838 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-07 01:07:42,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:07:42,904 INFO L93 Difference]: Finished difference Result 60 states and 81 transitions. [2021-12-07 01:07:42,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-07 01:07:42,905 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 32 [2021-12-07 01:07:42,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:07:42,905 INFO L225 Difference]: With dead ends: 60 [2021-12-07 01:07:42,905 INFO L226 Difference]: Without dead ends: 36 [2021-12-07 01:07:42,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-12-07 01:07:42,907 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 32 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:07:42,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 61 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:07:42,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-12-07 01:07:42,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2021-12-07 01:07:42,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-07 01:07:42,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2021-12-07 01:07:42,912 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 32 [2021-12-07 01:07:42,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:07:42,912 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2021-12-07 01:07:42,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-07 01:07:42,913 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2021-12-07 01:07:42,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-07 01:07:42,914 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:07:42,914 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:07:42,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-07 01:07:43,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:07:43,115 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:07:43,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:07:43,116 INFO L85 PathProgramCache]: Analyzing trace with hash -639666182, now seen corresponding path program 1 times [2021-12-07 01:07:43,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:07:43,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095311506] [2021-12-07 01:07:43,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:07:43,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:07:43,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:43,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-07 01:07:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:43,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-07 01:07:43,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:43,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-07 01:07:43,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:43,215 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-07 01:07:43,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:07:43,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095311506] [2021-12-07 01:07:43,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095311506] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:07:43,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:07:43,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 01:07:43,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061854411] [2021-12-07 01:07:43,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:07:43,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:07:43,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:07:43,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:07:43,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:07:43,216 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-07 01:07:43,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:07:43,243 INFO L93 Difference]: Finished difference Result 55 states and 68 transitions. [2021-12-07 01:07:43,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 01:07:43,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43 [2021-12-07 01:07:43,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:07:43,244 INFO L225 Difference]: With dead ends: 55 [2021-12-07 01:07:43,244 INFO L226 Difference]: Without dead ends: 36 [2021-12-07 01:07:43,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:07:43,245 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 22 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:07:43,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 32 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:07:43,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-12-07 01:07:43,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2021-12-07 01:07:43,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 30 states have internal predecessors, (37), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-07 01:07:43,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2021-12-07 01:07:43,250 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 43 [2021-12-07 01:07:43,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:07:43,251 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2021-12-07 01:07:43,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-07 01:07:43,251 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2021-12-07 01:07:43,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-07 01:07:43,252 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:07:43,252 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:07:43,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-07 01:07:43,252 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:07:43,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:07:43,253 INFO L85 PathProgramCache]: Analyzing trace with hash 121342172, now seen corresponding path program 1 times [2021-12-07 01:07:43,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:07:43,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598546386] [2021-12-07 01:07:43,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:07:43,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:07:43,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:43,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-07 01:07:43,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:43,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-07 01:07:43,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:43,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-07 01:07:43,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:43,383 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-07 01:07:43,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:07:43,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598546386] [2021-12-07 01:07:43,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598546386] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:07:43,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:07:43,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-07 01:07:43,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089562337] [2021-12-07 01:07:43,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:07:43,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-07 01:07:43,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:07:43,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-07 01:07:43,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-07 01:07:43,386 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-07 01:07:43,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:07:43,435 INFO L93 Difference]: Finished difference Result 63 states and 78 transitions. [2021-12-07 01:07:43,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 01:07:43,436 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2021-12-07 01:07:43,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:07:43,437 INFO L225 Difference]: With dead ends: 63 [2021-12-07 01:07:43,437 INFO L226 Difference]: Without dead ends: 59 [2021-12-07 01:07:43,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-07 01:07:43,438 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 15 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:07:43,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 191 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:07:43,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-12-07 01:07:43,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 45. [2021-12-07 01:07:43,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 38 states have internal predecessors, (45), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2021-12-07 01:07:43,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 59 transitions. [2021-12-07 01:07:43,446 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 59 transitions. Word has length 45 [2021-12-07 01:07:43,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:07:43,447 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 59 transitions. [2021-12-07 01:07:43,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-07 01:07:43,447 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 59 transitions. [2021-12-07 01:07:43,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-07 01:07:43,448 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:07:43,448 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:07:43,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-07 01:07:43,449 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:07:43,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:07:43,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1303372657, now seen corresponding path program 1 times [2021-12-07 01:07:43,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:07:43,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695666300] [2021-12-07 01:07:43,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:07:43,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:07:43,460 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:07:43,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2132275167] [2021-12-07 01:07:43,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:07:43,460 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:07:43,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:07:43,461 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:07:43,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-07 01:07:43,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:43,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 01:07:43,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:07:43,582 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-07 01:07:43,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:07:43,667 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-07 01:07:43,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:07:43,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695666300] [2021-12-07 01:07:43,667 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:07:43,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132275167] [2021-12-07 01:07:43,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132275167] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:07:43,668 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:07:43,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 8 [2021-12-07 01:07:43,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30511420] [2021-12-07 01:07:43,668 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:07:43,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-07 01:07:43,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:07:43,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-07 01:07:43,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:07:43,669 INFO L87 Difference]: Start difference. First operand 45 states and 59 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-07 01:07:43,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:07:43,722 INFO L93 Difference]: Finished difference Result 84 states and 120 transitions. [2021-12-07 01:07:43,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 01:07:43,723 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 48 [2021-12-07 01:07:43,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:07:43,724 INFO L225 Difference]: With dead ends: 84 [2021-12-07 01:07:43,724 INFO L226 Difference]: Without dead ends: 49 [2021-12-07 01:07:43,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-07 01:07:43,725 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 18 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:07:43,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 55 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:07:43,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-12-07 01:07:43,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2021-12-07 01:07:43,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 40 states have (on average 1.2) internal successors, (48), 41 states have internal predecessors, (48), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2021-12-07 01:07:43,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 62 transitions. [2021-12-07 01:07:43,733 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 62 transitions. Word has length 48 [2021-12-07 01:07:43,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:07:43,733 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 62 transitions. [2021-12-07 01:07:43,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-07 01:07:43,733 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 62 transitions. [2021-12-07 01:07:43,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-07 01:07:43,734 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:07:43,734 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:07:43,755 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-07 01:07:43,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:07:43,937 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:07:43,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:07:43,938 INFO L85 PathProgramCache]: Analyzing trace with hash 729051389, now seen corresponding path program 2 times [2021-12-07 01:07:43,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:07:43,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796746295] [2021-12-07 01:07:43,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:07:43,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:07:44,002 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:07:44,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [422745588] [2021-12-07 01:07:44,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 01:07:44,005 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:07:44,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:07:44,009 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:07:44,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-07 01:07:44,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 01:07:44,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:07:44,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-07 01:07:44,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:07:44,213 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 48 proven. 4 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-12-07 01:07:44,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:07:44,324 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 12 proven. 58 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-07 01:07:44,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:07:44,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796746295] [2021-12-07 01:07:44,324 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:07:44,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422745588] [2021-12-07 01:07:44,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422745588] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:07:44,325 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:07:44,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 13 [2021-12-07 01:07:44,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883673587] [2021-12-07 01:07:44,325 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:07:44,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-07 01:07:44,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:07:44,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-07 01:07:44,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-12-07 01:07:44,326 INFO L87 Difference]: Start difference. First operand 48 states and 62 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-07 01:07:44,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:07:44,409 INFO L93 Difference]: Finished difference Result 129 states and 169 transitions. [2021-12-07 01:07:44,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-07 01:07:44,409 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 57 [2021-12-07 01:07:44,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:07:44,411 INFO L225 Difference]: With dead ends: 129 [2021-12-07 01:07:44,411 INFO L226 Difference]: Without dead ends: 70 [2021-12-07 01:07:44,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-12-07 01:07:44,413 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 75 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:07:44,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 110 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:07:44,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-12-07 01:07:44,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2021-12-07 01:07:44,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 58 states have (on average 1.1724137931034482) internal successors, (68), 59 states have internal predecessors, (68), 7 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2021-12-07 01:07:44,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 89 transitions. [2021-12-07 01:07:44,425 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 89 transitions. Word has length 57 [2021-12-07 01:07:44,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:07:44,426 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 89 transitions. [2021-12-07 01:07:44,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-07 01:07:44,426 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 89 transitions. [2021-12-07 01:07:44,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-07 01:07:44,427 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:07:44,428 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:07:44,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-07 01:07:44,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-12-07 01:07:44,629 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:07:44,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:07:44,631 INFO L85 PathProgramCache]: Analyzing trace with hash 619340959, now seen corresponding path program 3 times [2021-12-07 01:07:44,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:07:44,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265607920] [2021-12-07 01:07:44,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:07:44,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:07:44,682 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:07:44,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1870601602] [2021-12-07 01:07:44,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 01:07:44,684 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:07:44,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:07:44,686 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:07:44,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-07 01:07:44,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-07 01:07:44,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:07:44,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-07 01:07:44,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:07:44,860 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 51 proven. 10 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-07 01:07:44,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:07:44,968 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 51 proven. 10 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-07 01:07:44,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:07:44,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265607920] [2021-12-07 01:07:44,968 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:07:44,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870601602] [2021-12-07 01:07:44,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870601602] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:07:44,968 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:07:44,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 13 [2021-12-07 01:07:44,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636157538] [2021-12-07 01:07:44,969 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:07:44,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-07 01:07:44,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:07:44,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-07 01:07:44,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-12-07 01:07:44,970 INFO L87 Difference]: Start difference. First operand 69 states and 89 transitions. Second operand has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 1 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-07 01:07:45,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:07:45,068 INFO L93 Difference]: Finished difference Result 121 states and 165 transitions. [2021-12-07 01:07:45,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-07 01:07:45,068 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 1 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 59 [2021-12-07 01:07:45,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:07:45,069 INFO L225 Difference]: With dead ends: 121 [2021-12-07 01:07:45,069 INFO L226 Difference]: Without dead ends: 64 [2021-12-07 01:07:45,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-12-07 01:07:45,070 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 46 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:07:45,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 57 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:07:45,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-12-07 01:07:45,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 48. [2021-12-07 01:07:45,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 40 states have (on average 1.15) internal successors, (46), 41 states have internal predecessors, (46), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2021-12-07 01:07:45,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 60 transitions. [2021-12-07 01:07:45,077 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 60 transitions. Word has length 59 [2021-12-07 01:07:45,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:07:45,077 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 60 transitions. [2021-12-07 01:07:45,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 1 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-07 01:07:45,077 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 60 transitions. [2021-12-07 01:07:45,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-07 01:07:45,078 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:07:45,078 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 6, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:07:45,098 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-07 01:07:45,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-12-07 01:07:45,279 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:07:45,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:07:45,280 INFO L85 PathProgramCache]: Analyzing trace with hash 433918235, now seen corresponding path program 1 times [2021-12-07 01:07:45,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:07:45,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170492579] [2021-12-07 01:07:45,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:07:45,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:07:45,314 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:07:45,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [554596785] [2021-12-07 01:07:45,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:07:45,316 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:07:45,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:07:45,318 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:07:45,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-07 01:07:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:07:45,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-07 01:07:45,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:07:45,467 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 80 proven. 6 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-12-07 01:07:45,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:07:45,524 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-12-07 01:07:45,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:07:45,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170492579] [2021-12-07 01:07:45,524 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:07:45,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554596785] [2021-12-07 01:07:45,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554596785] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:07:45,524 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:07:45,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-12-07 01:07:45,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059202033] [2021-12-07 01:07:45,525 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:07:45,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 01:07:45,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:07:45,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 01:07:45,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:07:45,526 INFO L87 Difference]: Start difference. First operand 48 states and 60 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-07 01:07:45,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:07:45,593 INFO L93 Difference]: Finished difference Result 78 states and 95 transitions. [2021-12-07 01:07:45,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-07 01:07:45,594 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 65 [2021-12-07 01:07:45,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:07:45,594 INFO L225 Difference]: With dead ends: 78 [2021-12-07 01:07:45,594 INFO L226 Difference]: Without dead ends: 54 [2021-12-07 01:07:45,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-12-07 01:07:45,595 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 23 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:07:45,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 67 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:07:45,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-12-07 01:07:45,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2021-12-07 01:07:45,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.1363636363636365) internal successors, (50), 45 states have internal predecessors, (50), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2021-12-07 01:07:45,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2021-12-07 01:07:45,601 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 65 [2021-12-07 01:07:45,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:07:45,602 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2021-12-07 01:07:45,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-07 01:07:45,602 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2021-12-07 01:07:45,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-07 01:07:45,602 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:07:45,603 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 6, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:07:45,622 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-07 01:07:45,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-07 01:07:45,804 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:07:45,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:07:45,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1262430211, now seen corresponding path program 2 times [2021-12-07 01:07:45,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:07:45,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963145714] [2021-12-07 01:07:45,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:07:45,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:07:45,842 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:07:45,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1526157509] [2021-12-07 01:07:45,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 01:07:45,843 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:07:45,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:07:45,845 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:07:45,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-07 01:07:45,926 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 01:07:45,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-12-07 01:07:45,926 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 01:07:46,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:07:46,188 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 01:07:46,188 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-07 01:07:46,188 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-07 01:07:46,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-07 01:07:46,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:07:46,396 INFO L732 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1] [2021-12-07 01:07:46,402 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-07 01:07:46,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 01:07:46 BoogieIcfgContainer [2021-12-07 01:07:46,471 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-07 01:07:46,471 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-07 01:07:46,471 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-07 01:07:46,471 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-07 01:07:46,472 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:07:41" (3/4) ... [2021-12-07 01:07:46,473 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-07 01:07:46,527 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-07 01:07:46,527 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-07 01:07:46,528 INFO L158 Benchmark]: Toolchain (without parser) took 5289.67ms. Allocated memory was 71.3MB in the beginning and 104.9MB in the end (delta: 33.6MB). Free memory was 42.1MB in the beginning and 66.8MB in the end (delta: -24.7MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2021-12-07 01:07:46,528 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 71.3MB. Free memory was 45.2MB in the beginning and 45.2MB in the end (delta: 42.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 01:07:46,528 INFO L158 Benchmark]: CACSL2BoogieTranslator took 180.08ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 41.9MB in the beginning and 57.6MB in the end (delta: -15.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-07 01:07:46,529 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.52ms. Allocated memory is still 86.0MB. Free memory was 57.6MB in the beginning and 55.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 01:07:46,529 INFO L158 Benchmark]: Boogie Preprocessor took 24.90ms. Allocated memory is still 86.0MB. Free memory was 55.8MB in the beginning and 54.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 01:07:46,529 INFO L158 Benchmark]: RCFGBuilder took 223.57ms. Allocated memory is still 86.0MB. Free memory was 54.5MB in the beginning and 62.7MB in the end (delta: -8.2MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. [2021-12-07 01:07:46,530 INFO L158 Benchmark]: TraceAbstraction took 4772.22ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 62.2MB in the beginning and 71.9MB in the end (delta: -9.7MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2021-12-07 01:07:46,530 INFO L158 Benchmark]: Witness Printer took 56.55ms. Allocated memory is still 104.9MB. Free memory was 71.9MB in the beginning and 66.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-07 01:07:46,531 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 71.3MB. Free memory was 45.2MB in the beginning and 45.2MB in the end (delta: 42.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 180.08ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 41.9MB in the beginning and 57.6MB in the end (delta: -15.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.52ms. Allocated memory is still 86.0MB. Free memory was 57.6MB in the beginning and 55.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.90ms. Allocated memory is still 86.0MB. Free memory was 55.8MB in the beginning and 54.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 223.57ms. Allocated memory is still 86.0MB. Free memory was 54.5MB in the beginning and 62.7MB in the end (delta: -8.2MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4772.22ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 62.2MB in the beginning and 71.9MB in the end (delta: -9.7MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * Witness Printer took 56.55ms. Allocated memory is still 104.9MB. Free memory was 71.9MB in the beginning and 66.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 64]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L15] int N; VAL [N=0] [L43] N = __VERIFIER_nondet_int() [L44] COND TRUE N > 1 [L45] int x[N]; [L46] CALL init_nondet(x) [L17] int i; [L18] i = 0 VAL [i=0, N=3, x={3:0}, x={3:0}] [L18] COND TRUE i < N [L19] x[i] = __VERIFIER_nondet_int() [L18] i++ VAL [i=1, N=3, x={3:0}, x={3:0}] [L18] COND TRUE i < N [L19] x[i] = __VERIFIER_nondet_int() [L18] i++ VAL [i=2, N=3, x={3:0}, x={3:0}] [L18] COND TRUE i < N [L19] x[i] = __VERIFIER_nondet_int() [L18] i++ VAL [i=3, N=3, x={3:0}, x={3:0}] [L18] COND FALSE !(i < N) VAL [i=3, N=3, x={3:0}, x={3:0}] [L46] RET init_nondet(x) [L47] int temp; [L48] int ret; [L49] int ret2; [L50] int ret5; VAL [N=3, x={3:0}] [L52] CALL, EXPR rangesum(x) VAL [N=3, x={3:0}] [L25] int i; [L26] long long ret; [L27] ret = 0 [L28] int cnt = 0; [L29] i = 0 VAL [cnt=0, i=0, N=3, ret=0, x={3:0}, x={3:0}] [L29] COND TRUE i < N VAL [cnt=0, i=0, N=3, ret=0, x={3:0}, x={3:0}] [L30] COND FALSE !(i > N/2) VAL [cnt=0, i=0, N=3, ret=0, x={3:0}, x={3:0}] [L29] i++ VAL [cnt=0, i=1, N=3, ret=0, x={3:0}, x={3:0}] [L29] COND TRUE i < N VAL [cnt=0, i=1, N=3, ret=0, x={3:0}, x={3:0}] [L30] COND FALSE !(i > N/2) VAL [cnt=0, i=1, N=3, ret=0, x={3:0}, x={3:0}] [L29] i++ VAL [cnt=0, i=2, N=3, ret=0, x={3:0}, x={3:0}] [L29] COND TRUE i < N VAL [cnt=0, i=2, N=3, ret=0, x={3:0}, x={3:0}] [L30] COND TRUE i > N/2 [L31] EXPR x[i] [L31] ret = ret + x[i] [L32] cnt = cnt + 1 VAL [cnt=1, i=2, N=3, ret=-2, x={3:0}, x={3:0}] [L29] i++ VAL [cnt=1, i=3, N=3, ret=-2, x={3:0}, x={3:0}] [L29] COND FALSE !(i < N) VAL [cnt=1, i=3, N=3, ret=-2, x={3:0}, x={3:0}] [L35] COND TRUE cnt !=0 [L36] return ret / cnt; VAL [\result=-2, cnt=1, i=3, N=3, ret=-2, x={3:0}, x={3:0}] [L52] RET, EXPR rangesum(x) VAL [N=3, rangesum(x)=-2, x={3:0}] [L52] ret = rangesum(x) [L54] EXPR x[0] [L54] temp=x[0] [L54] EXPR x[1] [L54] x[0] = x[1] [L54] x[1] = temp VAL [N=3, ret=-2, temp=-4, x={3:0}] [L55] CALL, EXPR rangesum(x) VAL [N=3, x={3:0}] [L25] int i; [L26] long long ret; [L27] ret = 0 [L28] int cnt = 0; [L29] i = 0 VAL [cnt=0, i=0, N=3, ret=0, x={3:0}, x={3:0}] [L29] COND TRUE i < N VAL [cnt=0, i=0, N=3, ret=0, x={3:0}, x={3:0}] [L30] COND FALSE !(i > N/2) VAL [cnt=0, i=0, N=3, ret=0, x={3:0}, x={3:0}] [L29] i++ VAL [cnt=0, i=1, N=3, ret=0, x={3:0}, x={3:0}] [L29] COND TRUE i < N VAL [cnt=0, i=1, N=3, ret=0, x={3:0}, x={3:0}] [L30] COND FALSE !(i > N/2) VAL [cnt=0, i=1, N=3, ret=0, x={3:0}, x={3:0}] [L29] i++ VAL [cnt=0, i=2, N=3, ret=0, x={3:0}, x={3:0}] [L29] COND TRUE i < N VAL [cnt=0, i=2, N=3, ret=0, x={3:0}, x={3:0}] [L30] COND TRUE i > N/2 [L31] EXPR x[i] [L31] ret = ret + x[i] [L32] cnt = cnt + 1 VAL [cnt=1, i=2, N=3, ret=-2, x={3:0}, x={3:0}] [L29] i++ VAL [cnt=1, i=3, N=3, ret=-2, x={3:0}, x={3:0}] [L29] COND FALSE !(i < N) VAL [cnt=1, i=3, N=3, ret=-2, x={3:0}, x={3:0}] [L35] COND TRUE cnt !=0 [L36] return ret / cnt; VAL [\result=-2, cnt=1, i=3, N=3, ret=-2, x={3:0}, x={3:0}] [L55] RET, EXPR rangesum(x) VAL [N=3, rangesum(x)=-2, ret=-2, temp=-4, x={3:0}] [L55] ret2 = rangesum(x) [L56] EXPR x[0] [L56] temp=x[0] [L57] int i =0 ; VAL [i=0, N=3, ret=-2, ret2=-2, temp=-3, x={3:0}] [L57] COND TRUE i N/2) VAL [cnt=0, i=0, N=3, ret=0, x={3:0}, x={3:0}] [L29] i++ VAL [cnt=0, i=1, N=3, ret=0, x={3:0}, x={3:0}] [L29] COND TRUE i < N VAL [cnt=0, i=1, N=3, ret=0, x={3:0}, x={3:0}] [L30] COND FALSE !(i > N/2) VAL [cnt=0, i=1, N=3, ret=0, x={3:0}, x={3:0}] [L29] i++ VAL [cnt=0, i=2, N=3, ret=0, x={3:0}, x={3:0}] [L29] COND TRUE i < N VAL [cnt=0, i=2, N=3, ret=0, x={3:0}, x={3:0}] [L30] COND TRUE i > N/2 [L31] EXPR x[i] [L31] ret = ret + x[i] [L32] cnt = cnt + 1 VAL [cnt=1, i=2, N=3, ret=-3, x={3:0}, x={3:0}] [L29] i++ VAL [cnt=1, i=3, N=3, ret=-3, x={3:0}, x={3:0}] [L29] COND FALSE !(i < N) VAL [cnt=1, i=3, N=3, ret=-3, x={3:0}, x={3:0}] [L35] COND TRUE cnt !=0 [L36] return ret / cnt; VAL [\result=-3, cnt=1, i=3, N=3, ret=-3, x={3:0}, x={3:0}] [L61] RET, EXPR rangesum(x) VAL [i=2, N=3, rangesum(x)=-3, ret=-2, ret2=-2, temp=-3, x={3:0}] [L61] ret5 = rangesum(x) [L63] COND TRUE ret != ret2 || ret !=ret5 VAL [i=2, N=3, ret=-2, ret2=-2, ret5=-3, temp=-3, x={3:0}] [L64] reach_error() VAL [i=2, N=3, ret=-2, ret2=-2, ret5=-3, temp=-3, x={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.7s, OverallIterations: 11, TraceHistogramMax: 9, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 243 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 237 mSDsluCounter, 714 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 455 mSDsCounter, 70 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 615 IncrementalHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 70 mSolverCounterUnsat, 259 mSDtfsCounter, 615 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 617 GetRequests, 547 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=8, InterpolantAutomatonStates: 74, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 40 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 568 NumberOfCodeBlocks, 552 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 716 ConstructedInterpolants, 0 QuantifiedInterpolants, 1500 SizeOfPredicates, 13 NumberOfNonLiveVariables, 1117 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 16 InterpolantComputations, 5 PerfectInterpolantSequences, 899/1014 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-07 01:07:46,557 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65be46cc-2e14-413d-bcc9-4d717e4fb757/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE