./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/nested_1-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-acceleration/nested_1-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y --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 7d46306d0f449fc697e3921b4f35c60335f25019c8462cefcaf92538159e3d14 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:00:16,417 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:00:16,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:00:16,454 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:00:16,454 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:00:16,456 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:00:16,458 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:00:16,465 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:00:16,468 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:00:16,470 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:00:16,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:00:16,474 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:00:16,475 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:00:16,481 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:00:16,484 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:00:16,487 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:00:16,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:00:16,491 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:00:16,494 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:00:16,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:00:16,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:00:16,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:00:16,509 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:00:16,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:00:16,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:00:16,521 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:00:16,521 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:00:16,523 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:00:16,524 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:00:16,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:00:16,527 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:00:16,528 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:00:16,530 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:00:16,532 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:00:16,533 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:00:16,534 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:00:16,535 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:00:16,535 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:00:16,535 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:00:16,536 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:00:16,537 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:00:16,538 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-13 18:00:16,589 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:00:16,590 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:00:16,590 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:00:16,591 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:00:16,591 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:00:16,592 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:00:16,592 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:00:16,593 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:00:16,593 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:00:16,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:00:16,594 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:00:16,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:00:16,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:00:16,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:00:16,594 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:00:16,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:00:16,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:00:16,595 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:00:16,595 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:00:16,596 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:00:16,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:00:16,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:00:16,596 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:00:16,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:00:16,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:00:16,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:00:16,597 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:00:16,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:00:16,598 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:00:16,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:00:16,598 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:00:16,599 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:00:16,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:00:16,599 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:00:16,599 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_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d46306d0f449fc697e3921b4f35c60335f25019c8462cefcaf92538159e3d14 [2021-11-13 18:00:16,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:00:16,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:00:16,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:00:16,972 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:00:16,973 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:00:16,975 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/loop-acceleration/nested_1-1.c [2021-11-13 18:00:17,036 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/data/a4fe1bc93/36cd8a0b264a4233873bb2913e58224b/FLAGa55b2db4e [2021-11-13 18:00:17,458 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:00:17,459 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/sv-benchmarks/c/loop-acceleration/nested_1-1.c [2021-11-13 18:00:17,464 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/data/a4fe1bc93/36cd8a0b264a4233873bb2913e58224b/FLAGa55b2db4e [2021-11-13 18:00:17,861 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/data/a4fe1bc93/36cd8a0b264a4233873bb2913e58224b [2021-11-13 18:00:17,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:00:17,865 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:00:17,873 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:00:17,873 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:00:17,877 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:00:17,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:00:17" (1/1) ... [2021-11-13 18:00:17,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9045370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:00:17, skipping insertion in model container [2021-11-13 18:00:17,880 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:00:17" (1/1) ... [2021-11-13 18:00:17,887 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:00:17,902 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:00:18,031 WARN L228 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_34ac624d-8484-480f-a211-4b7078f3a43c/sv-benchmarks/c/loop-acceleration/nested_1-1.c[322,335] [2021-11-13 18:00:18,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:00:18,052 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:00:18,064 WARN L228 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_34ac624d-8484-480f-a211-4b7078f3a43c/sv-benchmarks/c/loop-acceleration/nested_1-1.c[322,335] [2021-11-13 18:00:18,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:00:18,108 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:00:18,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:00:18 WrapperNode [2021-11-13 18:00:18,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:00:18,110 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:00:18,110 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:00:18,111 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:00:18,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:00:18" (1/1) ... [2021-11-13 18:00:18,125 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:00:18" (1/1) ... [2021-11-13 18:00:18,148 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:00:18,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:00:18,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:00:18,152 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:00:18,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:00:18" (1/1) ... [2021-11-13 18:00:18,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:00:18" (1/1) ... [2021-11-13 18:00:18,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:00:18" (1/1) ... [2021-11-13 18:00:18,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:00:18" (1/1) ... [2021-11-13 18:00:18,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:00:18" (1/1) ... [2021-11-13 18:00:18,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:00:18" (1/1) ... [2021-11-13 18:00:18,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:00:18" (1/1) ... [2021-11-13 18:00:18,191 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:00:18,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:00:18,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:00:18,195 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:00:18,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:00:18" (1/1) ... [2021-11-13 18:00:18,203 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:00:18,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:00:18,234 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:00:18,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:00:18,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:00:18,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:00:18,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:00:18,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:00:18,476 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:00:18,476 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-13 18:00:18,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:00:18 BoogieIcfgContainer [2021-11-13 18:00:18,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:00:18,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:00:18,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:00:18,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:00:18,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:00:17" (1/3) ... [2021-11-13 18:00:18,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ecbecbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:00:18, skipping insertion in model container [2021-11-13 18:00:18,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:00:18" (2/3) ... [2021-11-13 18:00:18,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ecbecbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:00:18, skipping insertion in model container [2021-11-13 18:00:18,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:00:18" (3/3) ... [2021-11-13 18:00:18,487 INFO L111 eAbstractionObserver]: Analyzing ICFG nested_1-1.c [2021-11-13 18:00:18,492 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:00:18,493 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:00:18,539 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:00:18,547 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 [2021-11-13 18:00:18,548 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 18:00:18,562 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:18,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-13 18:00:18,568 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:00:18,568 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-13 18:00:18,569 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:00:18,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:00:18,575 INFO L85 PathProgramCache]: Analyzing trace with hash 889646744, now seen corresponding path program 1 times [2021-11-13 18:00:18,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:00:18,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820726374] [2021-11-13 18:00:18,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:00:18,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:00:18,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:18,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:18,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:00:18,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820726374] [2021-11-13 18:00:18,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820726374] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:00:18,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:00:18,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:00:18,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527936520] [2021-11-13 18:00:18,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:00:18,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:00:18,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:00:18,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:00:18,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:00:18,858 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:18,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:00:18,924 INFO L93 Difference]: Finished difference Result 27 states and 39 transitions. [2021-11-13 18:00:18,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:00:18,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-13 18:00:18,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:00:18,947 INFO L225 Difference]: With dead ends: 27 [2021-11-13 18:00:18,947 INFO L226 Difference]: Without dead ends: 12 [2021-11-13 18:00:18,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:00:18,954 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.79ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.69ms IncrementalHoareTripleChecker+Time [2021-11-13 18:00:18,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 21 Invalid, 6 Unknown, 0 Unchecked, 0.79ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 19.69ms Time] [2021-11-13 18:00:18,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-11-13 18:00:18,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2021-11-13 18:00:19,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:19,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-11-13 18:00:19,002 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2021-11-13 18:00:19,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:00:19,002 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-11-13 18:00:19,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:19,003 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2021-11-13 18:00:19,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-13 18:00:19,003 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:00:19,003 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:00:19,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:00:19,004 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:00:19,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:00:19,005 INFO L85 PathProgramCache]: Analyzing trace with hash 704531011, now seen corresponding path program 1 times [2021-11-13 18:00:19,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:00:19,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245735904] [2021-11-13 18:00:19,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:00:19,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:00:19,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:19,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:19,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:00:19,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245735904] [2021-11-13 18:00:19,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245735904] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:00:19,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:00:19,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:00:19,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016986213] [2021-11-13 18:00:19,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:00:19,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:00:19,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:00:19,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:00:19,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:00:19,075 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:19,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:00:19,086 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2021-11-13 18:00:19,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:00:19,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-13 18:00:19,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:00:19,087 INFO L225 Difference]: With dead ends: 18 [2021-11-13 18:00:19,088 INFO L226 Difference]: Without dead ends: 11 [2021-11-13 18:00:19,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:00:19,090 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.42ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.04ms IncrementalHoareTripleChecker+Time [2021-11-13 18:00:19,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 4 Unknown, 0 Unchecked, 0.42ms Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 6.04ms Time] [2021-11-13 18:00:19,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-11-13 18:00:19,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-11-13 18:00:19,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:19,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2021-11-13 18:00:19,095 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 9 [2021-11-13 18:00:19,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:00:19,096 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-11-13 18:00:19,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:19,096 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2021-11-13 18:00:19,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-13 18:00:19,097 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:00:19,098 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:00:19,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:00:19,098 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:00:19,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:00:19,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1982141191, now seen corresponding path program 1 times [2021-11-13 18:00:19,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:00:19,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328690875] [2021-11-13 18:00:19,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:00:19,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:00:19,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:19,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:19,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:00:19,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328690875] [2021-11-13 18:00:19,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328690875] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:00:19,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772884225] [2021-11-13 18:00:19,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:00:19,222 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:00:19,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:00:19,235 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:00:19,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 18:00:19,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:19,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 18:00:19,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:00:19,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:00:19,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:00:19,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 18:00:19,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772884225] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:00:19,434 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:00:19,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 9 [2021-11-13 18:00:19,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012260646] [2021-11-13 18:00:19,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:00:19,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 18:00:19,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:00:19,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 18:00:19,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:00:19,436 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:19,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:00:19,608 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2021-11-13 18:00:19,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 18:00:19,609 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-13 18:00:19,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:00:19,610 INFO L225 Difference]: With dead ends: 35 [2021-11-13 18:00:19,610 INFO L226 Difference]: Without dead ends: 27 [2021-11-13 18:00:19,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2021-11-13 18:00:19,613 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 12 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.95ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.07ms IncrementalHoareTripleChecker+Time [2021-11-13 18:00:19,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 30 Invalid, 58 Unknown, 0 Unchecked, 1.95ms Time], IncrementalHoareTripleChecker [21 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 53.07ms Time] [2021-11-13 18:00:19,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-13 18:00:19,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-11-13 18:00:19,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:19,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-11-13 18:00:19,636 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 10 [2021-11-13 18:00:19,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:00:19,636 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-11-13 18:00:19,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:19,636 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-11-13 18:00:19,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-13 18:00:19,637 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:00:19,637 INFO L514 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2021-11-13 18:00:19,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:00:19,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:00:19,853 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:00:19,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:00:19,853 INFO L85 PathProgramCache]: Analyzing trace with hash -738026408, now seen corresponding path program 2 times [2021-11-13 18:00:19,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:00:19,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490627207] [2021-11-13 18:00:19,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:00:19,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:00:19,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:20,021 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 31 proven. 3 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-13 18:00:20,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:00:20,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490627207] [2021-11-13 18:00:20,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490627207] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:00:20,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776664638] [2021-11-13 18:00:20,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:00:20,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:00:20,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:00:20,025 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:00:20,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 18:00:20,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 18:00:20,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:00:20,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 18:00:20,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:00:20,261 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 31 proven. 3 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-13 18:00:20,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:00:20,365 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 31 proven. 3 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-13 18:00:20,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776664638] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:00:20,366 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:00:20,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-11-13 18:00:20,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429383193] [2021-11-13 18:00:20,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:00:20,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 18:00:20,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:00:20,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 18:00:20,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:00:20,371 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:20,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:00:20,492 INFO L93 Difference]: Finished difference Result 64 states and 87 transitions. [2021-11-13 18:00:20,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 18:00:20,497 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-13 18:00:20,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:00:20,498 INFO L225 Difference]: With dead ends: 64 [2021-11-13 18:00:20,498 INFO L226 Difference]: Without dead ends: 43 [2021-11-13 18:00:20,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:00:20,500 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.78ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.94ms IncrementalHoareTripleChecker+Time [2021-11-13 18:00:20,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 28 Unknown, 0 Unchecked, 1.78ms Time], IncrementalHoareTripleChecker [9 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 26.94ms Time] [2021-11-13 18:00:20,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-13 18:00:20,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-11-13 18:00:20,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.119047619047619) internal successors, (47), 42 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:20,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2021-11-13 18:00:20,513 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 26 [2021-11-13 18:00:20,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:00:20,514 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2021-11-13 18:00:20,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:20,514 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2021-11-13 18:00:20,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-13 18:00:20,518 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:00:20,518 INFO L514 BasicCegarLoop]: trace histogram [24, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2021-11-13 18:00:20,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:00:20,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:00:20,734 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:00:20,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:00:20,734 INFO L85 PathProgramCache]: Analyzing trace with hash -294987944, now seen corresponding path program 3 times [2021-11-13 18:00:20,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:00:20,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181850004] [2021-11-13 18:00:20,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:00:20,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:00:20,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:20,990 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 151 proven. 21 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-11-13 18:00:20,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:00:20,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181850004] [2021-11-13 18:00:20,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181850004] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:00:20,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077787054] [2021-11-13 18:00:20,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 18:00:20,997 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:00:20,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:00:21,002 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:00:21,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-13 18:00:21,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-13 18:00:21,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:00:21,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-13 18:00:21,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:00:21,293 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 151 proven. 21 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-11-13 18:00:21,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:00:21,503 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 151 proven. 21 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-11-13 18:00:21,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077787054] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:00:21,504 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:00:21,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2021-11-13 18:00:21,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906060101] [2021-11-13 18:00:21,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:00:21,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-13 18:00:21,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:00:21,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-13 18:00:21,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2021-11-13 18:00:21,506 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:21,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:00:21,671 INFO L93 Difference]: Finished difference Result 92 states and 115 transitions. [2021-11-13 18:00:21,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 18:00:21,672 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-13 18:00:21,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:00:21,673 INFO L225 Difference]: With dead ends: 92 [2021-11-13 18:00:21,673 INFO L226 Difference]: Without dead ends: 59 [2021-11-13 18:00:21,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2021-11-13 18:00:21,675 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.58ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.06ms IncrementalHoareTripleChecker+Time [2021-11-13 18:00:21,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 87 Unknown, 0 Unchecked, 1.58ms Time], IncrementalHoareTripleChecker [23 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 58.06ms Time] [2021-11-13 18:00:21,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-13 18:00:21,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-11-13 18:00:21,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 58 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:21,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2021-11-13 18:00:21,687 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 42 [2021-11-13 18:00:21,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:00:21,687 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2021-11-13 18:00:21,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:21,687 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2021-11-13 18:00:21,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-13 18:00:21,689 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:00:21,689 INFO L514 BasicCegarLoop]: trace histogram [40, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2021-11-13 18:00:21,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-13 18:00:21,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:00:21,894 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:00:21,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:00:21,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1228631464, now seen corresponding path program 4 times [2021-11-13 18:00:21,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:00:21,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884728699] [2021-11-13 18:00:21,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:00:21,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:00:21,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:22,130 INFO L134 CoverageAnalysis]: Checked inductivity of 962 backedges. 0 proven. 742 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-11-13 18:00:22,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:00:22,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884728699] [2021-11-13 18:00:22,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884728699] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:00:22,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592542339] [2021-11-13 18:00:22,132 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 18:00:22,132 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:00:22,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:00:22,133 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:00:22,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-13 18:00:22,291 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 18:00:22,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:00:22,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-13 18:00:22,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:00:22,611 INFO L134 CoverageAnalysis]: Checked inductivity of 962 backedges. 0 proven. 742 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-11-13 18:00:22,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:00:22,856 INFO L134 CoverageAnalysis]: Checked inductivity of 962 backedges. 0 proven. 742 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-11-13 18:00:22,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592542339] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:00:22,856 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:00:22,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-11-13 18:00:22,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476781256] [2021-11-13 18:00:22,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:00:22,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 18:00:22,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:00:22,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 18:00:22,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2021-11-13 18:00:22,860 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:23,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:00:23,249 INFO L93 Difference]: Finished difference Result 141 states and 156 transitions. [2021-11-13 18:00:23,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 18:00:23,251 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-13 18:00:23,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:00:23,252 INFO L225 Difference]: With dead ends: 141 [2021-11-13 18:00:23,253 INFO L226 Difference]: Without dead ends: 137 [2021-11-13 18:00:23,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=162, Unknown=0, NotChecked=0, Total=272 [2021-11-13 18:00:23,254 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 48 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.74ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72.51ms IncrementalHoareTripleChecker+Time [2021-11-13 18:00:23,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 81 Invalid, 84 Unknown, 0 Unchecked, 3.74ms Time], IncrementalHoareTripleChecker [13 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 72.51ms Time] [2021-11-13 18:00:23,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-13 18:00:23,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2021-11-13 18:00:23,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.0808823529411764) internal successors, (147), 136 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:23,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 147 transitions. [2021-11-13 18:00:23,295 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 147 transitions. Word has length 58 [2021-11-13 18:00:23,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:00:23,295 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 147 transitions. [2021-11-13 18:00:23,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:23,296 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 147 transitions. [2021-11-13 18:00:23,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-13 18:00:23,306 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:00:23,306 INFO L514 BasicCegarLoop]: trace histogram [100, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2021-11-13 18:00:23,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-13 18:00:23,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-13 18:00:23,534 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:00:23,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:00:23,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1191832584, now seen corresponding path program 5 times [2021-11-13 18:00:23,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:00:23,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504420741] [2021-11-13 18:00:23,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:00:23,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:00:23,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:24,009 INFO L134 CoverageAnalysis]: Checked inductivity of 6095 backedges. 0 proven. 5545 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2021-11-13 18:00:24,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:00:24,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504420741] [2021-11-13 18:00:24,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504420741] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:00:24,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604938745] [2021-11-13 18:00:24,010 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-13 18:00:24,010 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:00:24,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:00:24,011 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:00:24,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-13 18:00:31,282 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2021-11-13 18:00:31,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:00:31,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-13 18:00:31,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:00:31,980 INFO L134 CoverageAnalysis]: Checked inductivity of 6095 backedges. 0 proven. 5545 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2021-11-13 18:00:31,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:00:32,666 INFO L134 CoverageAnalysis]: Checked inductivity of 6095 backedges. 0 proven. 5545 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2021-11-13 18:00:32,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604938745] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:00:32,667 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:00:32,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2021-11-13 18:00:32,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859160508] [2021-11-13 18:00:32,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:00:32,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-13 18:00:32,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:00:32,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-13 18:00:32,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2021-11-13 18:00:32,673 INFO L87 Difference]: Start difference. First operand 137 states and 147 transitions. Second operand has 25 states, 25 states have (on average 3.6) internal successors, (90), 25 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:39,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:00:39,070 INFO L93 Difference]: Finished difference Result 297 states and 330 transitions. [2021-11-13 18:00:39,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-13 18:00:39,071 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.6) internal successors, (90), 25 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2021-11-13 18:00:39,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:00:39,074 INFO L225 Difference]: With dead ends: 297 [2021-11-13 18:00:39,074 INFO L226 Difference]: Without dead ends: 293 [2021-11-13 18:00:39,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 260 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=440, Invalid=750, Unknown=0, NotChecked=0, Total=1190 [2021-11-13 18:00:39,076 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 102 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 202.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.34ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 246.84ms IncrementalHoareTripleChecker+Time [2021-11-13 18:00:39,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 306 Invalid, 304 Unknown, 0 Unchecked, 5.34ms Time], IncrementalHoareTripleChecker [14 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 246.84ms Time] [2021-11-13 18:00:39,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-11-13 18:00:39,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2021-11-13 18:00:39,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 1.0787671232876712) internal successors, (315), 292 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:39,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 315 transitions. [2021-11-13 18:00:39,111 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 315 transitions. Word has length 136 [2021-11-13 18:00:39,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:00:39,112 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 315 transitions. [2021-11-13 18:00:39,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.6) internal successors, (90), 25 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:39,112 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 315 transitions. [2021-11-13 18:00:39,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-11-13 18:00:39,116 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:00:39,116 INFO L514 BasicCegarLoop]: trace histogram [220, 22, 22, 22, 1, 1, 1, 1, 1, 1] [2021-11-13 18:00:39,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-13 18:00:39,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-13 18:00:39,325 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:00:39,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:00:39,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1761742648, now seen corresponding path program 6 times [2021-11-13 18:00:39,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:00:39,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88447533] [2021-11-13 18:00:39,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:00:39,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:00:39,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:00:40,298 INFO L134 CoverageAnalysis]: Checked inductivity of 29645 backedges. 0 proven. 28435 refuted. 0 times theorem prover too weak. 1210 trivial. 0 not checked. [2021-11-13 18:00:40,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:00:40,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88447533] [2021-11-13 18:00:40,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88447533] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:00:40,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942831667] [2021-11-13 18:00:40,299 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-13 18:00:40,299 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:00:40,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:00:40,306 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:00:40,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-13 18:00:42,416 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-11-13 18:00:42,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:00:42,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-13 18:00:42,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:00:43,232 INFO L134 CoverageAnalysis]: Checked inductivity of 29645 backedges. 2584 proven. 0 refuted. 0 times theorem prover too weak. 27061 trivial. 0 not checked. [2021-11-13 18:00:43,233 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:00:43,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942831667] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:00:43,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:00:43,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [25] total 29 [2021-11-13 18:00:43,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803175298] [2021-11-13 18:00:43,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:00:43,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:00:43,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:00:43,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:00:43,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=690, Unknown=0, NotChecked=0, Total=812 [2021-11-13 18:00:43,237 INFO L87 Difference]: Start difference. First operand 293 states and 315 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:43,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:00:43,421 INFO L93 Difference]: Finished difference Result 293 states and 315 transitions. [2021-11-13 18:00:43,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:00:43,421 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 292 [2021-11-13 18:00:43,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:00:43,422 INFO L225 Difference]: With dead ends: 293 [2021-11-13 18:00:43,423 INFO L226 Difference]: Without dead ends: 0 [2021-11-13 18:00:43,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=152, Invalid=778, Unknown=0, NotChecked=0, Total=930 [2021-11-13 18:00:43,425 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.30ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5 IncrementalHoareTripleChecker+Unchecked, 14.76ms IncrementalHoareTripleChecker+Time [2021-11-13 18:00:43,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 18 Invalid, 21 Unknown, 0 Unchecked, 0.30ms Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 5 Unchecked, 14.76ms Time] [2021-11-13 18:00:43,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-13 18:00:43,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-13 18:00:43,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:43,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-13 18:00:43,427 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 292 [2021-11-13 18:00:43,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:00:43,427 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-13 18:00:43,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:00:43,427 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-13 18:00:43,427 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-13 18:00:43,431 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-13 18:00:43,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-13 18:00:43,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-13 18:00:43,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-13 18:00:48,039 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-13 18:00:48,039 INFO L854 garLoopResultBuilder]: At program point L19-2(lines 19 21) the Hoare annotation is: (or (and (< (mod |ULTIMATE.start_main_~x~0#1| 4294967296) 268435455) (< (mod (+ 4294967295 |ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) (= |ULTIMATE.start_main_~x~0#1| 0)) [2021-11-13 18:00:48,039 INFO L858 garLoopResultBuilder]: For program point L19-3(lines 19 21) no Hoare annotation was computed. [2021-11-13 18:00:48,039 INFO L858 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2021-11-13 18:00:48,039 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-13 18:00:48,039 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-13 18:00:48,039 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-13 18:00:48,040 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2021-11-13 18:00:48,040 INFO L854 garLoopResultBuilder]: At program point L16-2(lines 16 24) the Hoare annotation is: (or (and (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) (< (mod (+ 4294967295 |ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455)) [2021-11-13 18:00:48,040 INFO L858 garLoopResultBuilder]: For program point L16-3(lines 16 24) no Hoare annotation was computed. [2021-11-13 18:00:48,040 INFO L858 garLoopResultBuilder]: For program point L12(lines 12 27) no Hoare annotation was computed. [2021-11-13 18:00:48,040 INFO L858 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-11-13 18:00:48,040 INFO L861 garLoopResultBuilder]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2021-11-13 18:00:48,043 INFO L732 BasicCegarLoop]: Path program histogram: [6, 1, 1] [2021-11-13 18:00:48,044 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 18:00:48,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 06:00:48 BoogieIcfgContainer [2021-11-13 18:00:48,058 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-13 18:00:48,059 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 18:00:48,059 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 18:00:48,060 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 18:00:48,060 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:00:18" (3/4) ... [2021-11-13 18:00:48,063 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-13 18:00:48,074 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-11-13 18:00:48,074 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-13 18:00:48,074 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-13 18:00:48,075 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-13 18:00:48,108 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/witness.graphml [2021-11-13 18:00:48,108 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 18:00:48,109 INFO L158 Benchmark]: Toolchain (without parser) took 30244.43ms. Allocated memory was 79.7MB in the beginning and 180.4MB in the end (delta: 100.7MB). Free memory was 43.5MB in the beginning and 95.9MB in the end (delta: -52.4MB). Peak memory consumption was 48.7MB. Max. memory is 16.1GB. [2021-11-13 18:00:48,110 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 79.7MB. Free memory was 59.7MB in the beginning and 59.7MB in the end (delta: 37.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:00:48,110 INFO L158 Benchmark]: CACSL2BoogieTranslator took 236.22ms. Allocated memory was 79.7MB in the beginning and 102.8MB in the end (delta: 23.1MB). Free memory was 43.3MB in the beginning and 79.7MB in the end (delta: -36.4MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. [2021-11-13 18:00:48,111 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.33ms. Allocated memory is still 102.8MB. Free memory was 79.5MB in the beginning and 78.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:00:48,111 INFO L158 Benchmark]: Boogie Preprocessor took 41.82ms. Allocated memory is still 102.8MB. Free memory was 78.2MB in the beginning and 77.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:00:48,112 INFO L158 Benchmark]: RCFGBuilder took 284.54ms. Allocated memory is still 102.8MB. Free memory was 77.1MB in the beginning and 67.9MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-13 18:00:48,112 INFO L158 Benchmark]: TraceAbstraction took 29578.54ms. Allocated memory was 102.8MB in the beginning and 180.4MB in the end (delta: 77.6MB). Free memory was 67.5MB in the beginning and 98.0MB in the end (delta: -30.5MB). Peak memory consumption was 97.6MB. Max. memory is 16.1GB. [2021-11-13 18:00:48,113 INFO L158 Benchmark]: Witness Printer took 49.32ms. Allocated memory is still 180.4MB. Free memory was 98.0MB in the beginning and 95.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 18:00:48,117 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 79.7MB. Free memory was 59.7MB in the beginning and 59.7MB in the end (delta: 37.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 236.22ms. Allocated memory was 79.7MB in the beginning and 102.8MB in the end (delta: 23.1MB). Free memory was 43.3MB in the beginning and 79.7MB in the end (delta: -36.4MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.33ms. Allocated memory is still 102.8MB. Free memory was 79.5MB in the beginning and 78.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 41.82ms. Allocated memory is still 102.8MB. Free memory was 78.2MB in the beginning and 77.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 284.54ms. Allocated memory is still 102.8MB. Free memory was 77.1MB in the beginning and 67.9MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 29578.54ms. Allocated memory was 102.8MB in the beginning and 180.4MB in the end (delta: 77.6MB). Free memory was 67.5MB in the beginning and 98.0MB in the end (delta: -30.5MB). Peak memory consumption was 97.6MB. Max. memory is 16.1GB. * Witness Printer took 49.32ms. Allocated memory is still 180.4MB. Free memory was 98.0MB in the beginning and 95.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. 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 - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 29.5s, OverallIterations: 8, TraceHistogramMax: 220, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 7.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.4s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 171 SdHoareTripleChecker+Valid, 497.92ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 171 mSDsluCounter, 549 SdHoareTripleChecker+Invalid, 405.31ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 5 IncrementalHoareTripleChecker+Unchecked, 452 mSDsCounter, 82 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 505 IncrementalHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 82 mSolverCounterUnsat, 97 mSDtfsCounter, 505 mSolverCounterSat, 15.90ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 926 GetRequests, 802 SyntacticMatches, 4 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 8.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=293occurred in iteration=7, InterpolantAutomatonStates: 83, 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, 8 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 269 NumberOfFragments, 33 HoareAnnotationTreeSize, 3 FomulaSimplifications, 492 FormulaSimplificationTreeSizeReduction, 2.3s HoareSimplificationTime, 3 FomulaSimplificationsInter, 7161 FormulaSimplificationTreeSizeReductionInter, 2.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 10.2s SatisfiabilityAnalysisTime, 5.2s InterpolantComputationTime, 1143 NumberOfCodeBlocks, 902 NumberOfCodeBlocksAsserted, 93 NumberOfCheckSat, 1396 ConstructedInterpolants, 1 QuantifiedInterpolants, 6502 SizeOfPredicates, 9 NumberOfNonLiveVariables, 1041 ConjunctsInSsa, 75 ConjunctsInUnsatCore, 19 InterpolantComputations, 3 PerfectInterpolantSequences, 34524/81896 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (x % 4294967296 < 268435455 && (4294967295 + x) % 4294967296 < 268435455) || x == 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: (y == 0 && x == 0) || (4294967295 + x) % 4294967296 < 268435455 RESULT: Ultimate proved your program to be correct! [2021-11-13 18:00:48,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34ac624d-8484-480f-a211-4b7078f3a43c/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE