./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test22-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a45e07-0253-4bf4-85fc-d9ce29416f65/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a45e07-0253-4bf4-85fc-d9ce29416f65/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a45e07-0253-4bf4-85fc-d9ce29416f65/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a45e07-0253-4bf4-85fc-d9ce29416f65/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test22-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a45e07-0253-4bf4-85fc-d9ce29416f65/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a45e07-0253-4bf4-85fc-d9ce29416f65/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e1ce1c36cc17bb5fac8e93fbe54fbc2a77334d62ad40c06c722f9da96af2516f --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:16:43,504 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:16:43,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:16:43,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:16:43,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:16:43,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:16:43,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:16:43,541 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:16:43,543 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:16:43,544 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:16:43,545 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:16:43,546 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:16:43,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:16:43,548 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:16:43,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:16:43,551 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:16:43,552 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:16:43,553 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:16:43,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:16:43,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:16:43,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:16:43,560 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:16:43,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:16:43,562 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:16:43,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:16:43,566 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:16:43,566 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:16:43,568 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:16:43,568 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:16:43,569 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:16:43,570 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:16:43,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:16:43,571 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:16:43,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:16:43,573 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:16:43,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:16:43,574 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:16:43,574 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:16:43,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:16:43,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:16:43,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:16:43,576 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a45e07-0253-4bf4-85fc-d9ce29416f65/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 00:16:43,599 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:16:43,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:16:43,603 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:16:43,604 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:16:43,604 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 00:16:43,604 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 00:16:43,605 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:16:43,605 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:16:43,605 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:16:43,605 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:16:43,605 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 00:16:43,606 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 00:16:43,606 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 00:16:43,606 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:16:43,606 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 00:16:43,606 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 00:16:43,606 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 00:16:43,607 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 00:16:43,607 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 00:16:43,607 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:16:43,607 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 00:16:43,607 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:16:43,607 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:16:43,607 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 00:16:43,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:16:43,608 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:16:43,608 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 00:16:43,608 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 00:16:43,608 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 00:16:43,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 00:16:43,608 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 00:16:43,608 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 00:16:43,608 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 00:16:43,609 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:16:43,609 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a45e07-0253-4bf4-85fc-d9ce29416f65/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a45e07-0253-4bf4-85fc-d9ce29416f65/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1ce1c36cc17bb5fac8e93fbe54fbc2a77334d62ad40c06c722f9da96af2516f [2021-12-07 00:16:43,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:16:43,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:16:43,802 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:16:43,803 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:16:43,803 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:16:43,805 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a45e07-0253-4bf4-85fc-d9ce29416f65/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-regression/test22-1.c [2021-12-07 00:16:43,856 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a45e07-0253-4bf4-85fc-d9ce29416f65/bin/uautomizer-DrprNOufMa/data/c8dc23c32/3897e1c7c3aa4a27bc8a64d8a3651d9e/FLAGd71edcc4f [2021-12-07 00:16:44,228 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:16:44,228 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a45e07-0253-4bf4-85fc-d9ce29416f65/sv-benchmarks/c/ldv-regression/test22-1.c [2021-12-07 00:16:44,233 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a45e07-0253-4bf4-85fc-d9ce29416f65/bin/uautomizer-DrprNOufMa/data/c8dc23c32/3897e1c7c3aa4a27bc8a64d8a3651d9e/FLAGd71edcc4f [2021-12-07 00:16:44,243 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a45e07-0253-4bf4-85fc-d9ce29416f65/bin/uautomizer-DrprNOufMa/data/c8dc23c32/3897e1c7c3aa4a27bc8a64d8a3651d9e [2021-12-07 00:16:44,245 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:16:44,246 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:16:44,247 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:16:44,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:16:44,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:16:44,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:16:44" (1/1) ... [2021-12-07 00:16:44,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@761ef84c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:16:44, skipping insertion in model container [2021-12-07 00:16:44,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:16:44" (1/1) ... [2021-12-07 00:16:44,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:16:44,267 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:16:44,406 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a45e07-0253-4bf4-85fc-d9ce29416f65/sv-benchmarks/c/ldv-regression/test22-1.c[1029,1042] [2021-12-07 00:16:44,409 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:16:44,416 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 00:16:44,430 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a45e07-0253-4bf4-85fc-d9ce29416f65/sv-benchmarks/c/ldv-regression/test22-1.c[1029,1042] [2021-12-07 00:16:44,431 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:16:44,441 INFO L208 MainTranslator]: Completed translation [2021-12-07 00:16:44,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:16:44 WrapperNode [2021-12-07 00:16:44,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:16:44,442 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 00:16:44,443 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 00:16:44,443 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 00:16:44,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:16:44" (1/1) ... [2021-12-07 00:16:44,453 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:16:44" (1/1) ... [2021-12-07 00:16:44,473 INFO L137 Inliner]: procedures = 16, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 85 [2021-12-07 00:16:44,474 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 00:16:44,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 00:16:44,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 00:16:44,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 00:16:44,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:16:44" (1/1) ... [2021-12-07 00:16:44,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:16:44" (1/1) ... [2021-12-07 00:16:44,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:16:44" (1/1) ... [2021-12-07 00:16:44,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:16:44" (1/1) ... [2021-12-07 00:16:44,489 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:16:44" (1/1) ... [2021-12-07 00:16:44,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:16:44" (1/1) ... [2021-12-07 00:16:44,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:16:44" (1/1) ... [2021-12-07 00:16:44,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 00:16:44,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 00:16:44,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 00:16:44,498 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 00:16:44,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:16:44" (1/1) ... [2021-12-07 00:16:44,506 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:16:44,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a45e07-0253-4bf4-85fc-d9ce29416f65/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:16:44,527 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a45e07-0253-4bf4-85fc-d9ce29416f65/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 00:16:44,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a45e07-0253-4bf4-85fc-d9ce29416f65/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 00:16:44,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 00:16:44,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 00:16:44,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-07 00:16:44,564 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2021-12-07 00:16:44,564 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2021-12-07 00:16:44,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 00:16:44,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 00:16:44,564 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-07 00:16:44,616 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 00:16:44,617 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 00:16:44,713 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 00:16:44,719 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 00:16:44,719 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-07 00:16:44,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:16:44 BoogieIcfgContainer [2021-12-07 00:16:44,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 00:16:44,723 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 00:16:44,723 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 00:16:44,726 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 00:16:44,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:16:44" (1/3) ... [2021-12-07 00:16:44,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42f69cb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:16:44, skipping insertion in model container [2021-12-07 00:16:44,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:16:44" (2/3) ... [2021-12-07 00:16:44,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42f69cb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:16:44, skipping insertion in model container [2021-12-07 00:16:44,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:16:44" (3/3) ... [2021-12-07 00:16:44,730 INFO L111 eAbstractionObserver]: Analyzing ICFG test22-1.c [2021-12-07 00:16:44,735 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 00:16:44,735 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 00:16:44,770 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 00:16:44,777 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-07 00:16:44,777 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 00:16:44,794 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-07 00:16:44,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-07 00:16:44,800 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:16:44,801 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:16:44,802 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:16:44,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:16:44,807 INFO L85 PathProgramCache]: Analyzing trace with hash -911093318, now seen corresponding path program 1 times [2021-12-07 00:16:44,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:16:44,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799687874] [2021-12-07 00:16:44,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:16:44,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:16:44,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:16:45,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-07 00:16:45,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:16:45,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-07 00:16:45,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:16:45,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-07 00:16:45,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:16:45,033 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-07 00:16:45,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:16:45,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799687874] [2021-12-07 00:16:45,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799687874] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:16:45,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:16:45,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 00:16:45,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102329989] [2021-12-07 00:16:45,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:16:45,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-07 00:16:45,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:16:45,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-07 00:16:45,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 00:16:45,068 INFO L87 Difference]: Start difference. First operand has 26 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-07 00:16:45,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:16:45,083 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2021-12-07 00:16:45,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-07 00:16:45,085 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2021-12-07 00:16:45,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:16:45,093 INFO L225 Difference]: With dead ends: 35 [2021-12-07 00:16:45,093 INFO L226 Difference]: Without dead ends: 22 [2021-12-07 00:16:45,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 00:16:45,100 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:16:45,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:16:45,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-12-07 00:16:45,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-12-07 00:16:45,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-07 00:16:45,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-12-07 00:16:45,139 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 28 [2021-12-07 00:16:45,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:16:45,141 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-12-07 00:16:45,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-07 00:16:45,142 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-12-07 00:16:45,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-07 00:16:45,144 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:16:45,144 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:16:45,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 00:16:45,144 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:16:45,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:16:45,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1614870372, now seen corresponding path program 1 times [2021-12-07 00:16:45,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:16:45,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914479348] [2021-12-07 00:16:45,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:16:45,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:16:45,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:16:45,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-07 00:16:45,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:16:45,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-07 00:16:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:16:45,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-07 00:16:45,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:16:45,388 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-07 00:16:45,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:16:45,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914479348] [2021-12-07 00:16:45,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914479348] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:16:45,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744103945] [2021-12-07 00:16:45,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:16:45,389 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:16:45,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a45e07-0253-4bf4-85fc-d9ce29416f65/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:16:45,390 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a45e07-0253-4bf4-85fc-d9ce29416f65/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:16:45,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a45e07-0253-4bf4-85fc-d9ce29416f65/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-07 00:16:45,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:16:45,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-07 00:16:45,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:16:45,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-12-07 00:16:45,801 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:16:45,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:16:45,847 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-12-07 00:16:45,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2021-12-07 00:16:45,902 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-07 00:16:45,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744103945] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-07 00:16:45,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:16:45,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10, 16] total 26 [2021-12-07 00:16:45,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934732991] [2021-12-07 00:16:45,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:16:45,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:16:45,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:16:45,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:16:45,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2021-12-07 00:16:45,906 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-07 00:16:45,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:16:45,951 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2021-12-07 00:16:45,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:16:45,951 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2021-12-07 00:16:45,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:16:45,952 INFO L225 Difference]: With dead ends: 30 [2021-12-07 00:16:45,952 INFO L226 Difference]: Without dead ends: 25 [2021-12-07 00:16:45,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2021-12-07 00:16:45,955 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 11 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:16:45,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 77 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:16:45,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-12-07 00:16:45,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2021-12-07 00:16:45,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-07 00:16:45,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-12-07 00:16:45,961 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 29 [2021-12-07 00:16:45,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:16:45,961 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-12-07 00:16:45,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-07 00:16:45,962 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-12-07 00:16:45,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-07 00:16:45,962 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:16:45,962 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:16:45,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a45e07-0253-4bf4-85fc-d9ce29416f65/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-07 00:16:46,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a45e07-0253-4bf4-85fc-d9ce29416f65/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:16:46,165 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:16:46,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:16:46,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1377934871, now seen corresponding path program 1 times [2021-12-07 00:16:46,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:16:46,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427308402] [2021-12-07 00:16:46,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:16:46,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:16:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:16:46,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-07 00:16:46,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:16:46,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-07 00:16:46,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:16:46,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-07 00:16:46,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:16:46,410 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-07 00:16:46,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:16:46,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427308402] [2021-12-07 00:16:46,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427308402] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:16:46,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971486833] [2021-12-07 00:16:46,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:16:46,411 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:16:46,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a45e07-0253-4bf4-85fc-d9ce29416f65/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:16:46,412 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a45e07-0253-4bf4-85fc-d9ce29416f65/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:16:46,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a45e07-0253-4bf4-85fc-d9ce29416f65/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-07 00:16:46,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:16:46,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-07 00:16:46,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:16:46,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-12-07 00:16:46,720 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:16:46,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:16:46,782 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-12-07 00:16:46,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2021-12-07 00:16:46,841 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-07 00:16:46,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971486833] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:16:46,842 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:16:46,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17, 7] total 29 [2021-12-07 00:16:46,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895136385] [2021-12-07 00:16:46,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:16:46,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-07 00:16:46,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:16:46,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-07 00:16:46,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=730, Unknown=0, NotChecked=0, Total=812 [2021-12-07 00:16:46,845 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 29 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 24 states have internal predecessors, (48), 6 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2021-12-07 00:16:47,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:16:47,567 INFO L93 Difference]: Finished difference Result 71 states and 91 transitions. [2021-12-07 00:16:47,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-07 00:16:47,567 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 24 states have internal predecessors, (48), 6 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) Word has length 31 [2021-12-07 00:16:47,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:16:47,569 INFO L225 Difference]: With dead ends: 71 [2021-12-07 00:16:47,570 INFO L226 Difference]: Without dead ends: 61 [2021-12-07 00:16:47,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=484, Invalid=2486, Unknown=0, NotChecked=0, Total=2970 [2021-12-07 00:16:47,572 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 120 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:16:47,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 267 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 00:16:47,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-12-07 00:16:47,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 39. [2021-12-07 00:16:47,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 31 states have (on average 1.096774193548387) internal successors, (34), 31 states have internal predecessors, (34), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2021-12-07 00:16:47,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2021-12-07 00:16:47,584 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 31 [2021-12-07 00:16:47,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:16:47,584 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2021-12-07 00:16:47,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 24 states have internal predecessors, (48), 6 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2021-12-07 00:16:47,584 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2021-12-07 00:16:47,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-07 00:16:47,586 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:16:47,586 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:16:47,606 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a45e07-0253-4bf4-85fc-d9ce29416f65/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-07 00:16:47,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a45e07-0253-4bf4-85fc-d9ce29416f65/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:16:47,788 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:16:47,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:16:47,789 INFO L85 PathProgramCache]: Analyzing trace with hash -772238856, now seen corresponding path program 2 times [2021-12-07 00:16:47,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:16:47,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926154344] [2021-12-07 00:16:47,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:16:47,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:16:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:16:48,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-07 00:16:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:16:48,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-07 00:16:48,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:16:48,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-07 00:16:48,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:16:48,042 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-07 00:16:48,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:16:48,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926154344] [2021-12-07 00:16:48,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926154344] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:16:48,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036155446] [2021-12-07 00:16:48,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:16:48,043 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:16:48,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a45e07-0253-4bf4-85fc-d9ce29416f65/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:16:48,044 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a45e07-0253-4bf4-85fc-d9ce29416f65/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:16:48,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a45e07-0253-4bf4-85fc-d9ce29416f65/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-07 00:16:48,094 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 00:16:48,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:16:48,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 43 conjunts are in the unsatisfiable core [2021-12-07 00:16:48,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:16:48,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-12-07 00:16:48,414 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 00:16:48,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:16:48,533 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-12-07 00:16:48,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2021-12-07 00:16:48,585 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-07 00:16:48,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036155446] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:16:48,585 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:16:48,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 19, 10] total 37 [2021-12-07 00:16:48,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138091181] [2021-12-07 00:16:48,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:16:48,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-12-07 00:16:48,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:16:48,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-12-07 00:16:48,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1164, Unknown=0, NotChecked=0, Total=1332 [2021-12-07 00:16:48,587 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 37 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 33 states have internal predecessors, (66), 6 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2021-12-07 00:16:49,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:16:49,801 INFO L93 Difference]: Finished difference Result 90 states and 114 transitions. [2021-12-07 00:16:49,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-12-07 00:16:49,801 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 33 states have internal predecessors, (66), 6 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) Word has length 37 [2021-12-07 00:16:49,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:16:49,802 INFO L225 Difference]: With dead ends: 90 [2021-12-07 00:16:49,802 INFO L226 Difference]: Without dead ends: 85 [2021-12-07 00:16:49,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1593 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1387, Invalid=5753, Unknown=0, NotChecked=0, Total=7140 [2021-12-07 00:16:49,805 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 182 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:16:49,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 268 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 00:16:49,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-12-07 00:16:49,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 51. [2021-12-07 00:16:49,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 43 states have (on average 1.069767441860465) internal successors, (46), 43 states have internal predecessors, (46), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2021-12-07 00:16:49,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2021-12-07 00:16:49,814 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 37 [2021-12-07 00:16:49,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:16:49,814 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2021-12-07 00:16:49,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 33 states have internal predecessors, (66), 6 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2021-12-07 00:16:49,814 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2021-12-07 00:16:49,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-07 00:16:49,815 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:16:49,816 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:16:49,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a45e07-0253-4bf4-85fc-d9ce29416f65/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-07 00:16:50,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a45e07-0253-4bf4-85fc-d9ce29416f65/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:16:50,017 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:16:50,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:16:50,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1758737322, now seen corresponding path program 3 times [2021-12-07 00:16:50,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:16:50,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924592089] [2021-12-07 00:16:50,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:16:50,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:16:50,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:16:50,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-07 00:16:50,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:16:50,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-07 00:16:50,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:16:50,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-07 00:16:50,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:16:50,270 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 3 proven. 113 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-07 00:16:50,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:16:50,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924592089] [2021-12-07 00:16:50,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924592089] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:16:50,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304792549] [2021-12-07 00:16:50,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 00:16:50,271 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:16:50,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a45e07-0253-4bf4-85fc-d9ce29416f65/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:16:50,271 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a45e07-0253-4bf4-85fc-d9ce29416f65/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:16:50,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a45e07-0253-4bf4-85fc-d9ce29416f65/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-07 00:16:50,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-07 00:16:50,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:16:50,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 54 conjunts are in the unsatisfiable core [2021-12-07 00:16:50,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:16:50,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 25 [2021-12-07 00:16:50,862 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 19 proven. 22 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-12-07 00:16:50,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:16:50,982 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-12-07 00:16:50,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 30 [2021-12-07 00:16:51,112 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-12-07 00:16:51,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304792549] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:16:51,112 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:16:51,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21, 11] total 43 [2021-12-07 00:16:51,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598060733] [2021-12-07 00:16:51,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:16:51,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-12-07 00:16:51,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:16:51,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-12-07 00:16:51,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1691, Unknown=0, NotChecked=0, Total=1806 [2021-12-07 00:16:51,115 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand has 43 states, 41 states have (on average 1.7804878048780488) internal successors, (73), 39 states have internal predecessors, (73), 5 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2021-12-07 00:16:54,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:16:54,315 INFO L93 Difference]: Finished difference Result 119 states and 138 transitions. [2021-12-07 00:16:54,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-12-07 00:16:54,315 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 41 states have (on average 1.7804878048780488) internal successors, (73), 39 states have internal predecessors, (73), 5 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 49 [2021-12-07 00:16:54,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:16:54,315 INFO L225 Difference]: With dead ends: 119 [2021-12-07 00:16:54,315 INFO L226 Difference]: Without dead ends: 0 [2021-12-07 00:16:54,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4090 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1852, Invalid=14918, Unknown=0, NotChecked=0, Total=16770 [2021-12-07 00:16:54,321 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 361 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 1328 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 1660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 1328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-07 00:16:54,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [361 Valid, 224 Invalid, 1660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 1328 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-07 00:16:54,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-07 00:16:54,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-07 00:16:54,322 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) [2021-12-07 00:16:54,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-07 00:16:54,322 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2021-12-07 00:16:54,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:16:54,322 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-07 00:16:54,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 41 states have (on average 1.7804878048780488) internal successors, (73), 39 states have internal predecessors, (73), 5 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2021-12-07 00:16:54,322 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-07 00:16:54,322 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-07 00:16:54,324 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-07 00:16:54,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a45e07-0253-4bf4-85fc-d9ce29416f65/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-07 00:16:54,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a45e07-0253-4bf4-85fc-d9ce29416f65/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:16:54,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-07 00:16:55,299 INFO L858 garLoopResultBuilder]: For program point get_dummyFINAL(lines 22 25) no Hoare annotation was computed. [2021-12-07 00:16:55,299 INFO L861 garLoopResultBuilder]: At program point get_dummyENTRY(lines 22 25) the Hoare annotation is: true [2021-12-07 00:16:55,299 INFO L858 garLoopResultBuilder]: For program point L24-1(line 24) no Hoare annotation was computed. [2021-12-07 00:16:55,299 INFO L858 garLoopResultBuilder]: For program point get_dummyEXIT(lines 22 25) no Hoare annotation was computed. [2021-12-07 00:16:55,299 INFO L854 garLoopResultBuilder]: At program point L35-2(line 35) the Hoare annotation is: (and (not (= |~#d1~0.base| |~#d2~0.base|)) (= |~#d1~0.base| 4) (= |~#d1~0.offset| 0)) [2021-12-07 00:16:55,300 INFO L858 garLoopResultBuilder]: For program point L37-4(lines 37 46) no Hoare annotation was computed. [2021-12-07 00:16:55,300 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-07 00:16:55,300 INFO L858 garLoopResultBuilder]: For program point L35-3(line 35) no Hoare annotation was computed. [2021-12-07 00:16:55,300 INFO L854 garLoopResultBuilder]: At program point L35-4(line 35) the Hoare annotation is: (and (not (= |~#d1~0.base| |~#d2~0.base|)) (= |~#d1~0.base| 4) (= |~#d1~0.offset| 0)) [2021-12-07 00:16:55,300 INFO L858 garLoopResultBuilder]: For program point L35-5(line 35) no Hoare annotation was computed. [2021-12-07 00:16:55,300 INFO L854 garLoopResultBuilder]: At program point L29(lines 27 30) the Hoare annotation is: (and (not (= |~#d1~0.base| |~#d2~0.base|)) (= (select (select |#memory_int| |ULTIMATE.start_main_~pd2~0#1.base|) |ULTIMATE.start_main_~pd2~0#1.offset|) |ULTIMATE.start_main_~i~0#1|) (= |~#d1~0.base| 4) (<= 1 |ULTIMATE.start_check_#res#1|) (= |ULTIMATE.start_main_~pd1~0#1.offset| |ULTIMATE.start_main_~pd2~0#1.offset|) (= |ULTIMATE.start_main_~pd2~0#1.base| |ULTIMATE.start_main_~pd1~0#1.base|) (= |~#d1~0.offset| 0) (= |ULTIMATE.start_main_~pa~0#1.base| |ULTIMATE.start_main_~pd2~0#1.base|) (= |ULTIMATE.start_main_~pd2~0#1.offset| |ULTIMATE.start_main_~pa~0#1.offset|)) [2021-12-07 00:16:55,300 INFO L858 garLoopResultBuilder]: For program point L13(lines 13 20) no Hoare annotation was computed. [2021-12-07 00:16:55,300 INFO L854 garLoopResultBuilder]: At program point L44(lines 33 52) the Hoare annotation is: false [2021-12-07 00:16:55,300 INFO L858 garLoopResultBuilder]: For program point L40-1(lines 40 42) no Hoare annotation was computed. [2021-12-07 00:16:55,300 INFO L854 garLoopResultBuilder]: At program point L40-3(lines 40 42) the Hoare annotation is: (let ((.cse0 (not (= |~#d1~0.base| |~#d2~0.base|))) (.cse4 (select (select |#memory_int| |ULTIMATE.start_main_~pd2~0#1.base|) |ULTIMATE.start_main_~pd2~0#1.offset|)) (.cse1 (= |~#d1~0.base| 4)) (.cse2 (= |ULTIMATE.start_main_~pd1~0#1.offset| |ULTIMATE.start_main_~pd2~0#1.offset|)) (.cse3 (= |ULTIMATE.start_main_~pd2~0#1.base| |ULTIMATE.start_main_~pd1~0#1.base|)) (.cse5 (= |~#d1~0.offset| 0)) (.cse6 (= |ULTIMATE.start_main_~pa~0#1.base| |ULTIMATE.start_main_~pd2~0#1.base|)) (.cse7 (= |ULTIMATE.start_main_~pd2~0#1.offset| |ULTIMATE.start_main_~pa~0#1.offset|))) (or (and .cse0 .cse1 .cse2 .cse3 (= (+ 5 |ULTIMATE.start_main_~i~0#1|) .cse4) .cse5 .cse6 .cse7) (and .cse0 (= .cse4 (+ |ULTIMATE.start_main_~i~0#1| 10)) .cse1 .cse2 .cse3 .cse5 .cse6 .cse7) (and .cse0 .cse1 .cse2 .cse3 (= (+ 3 |ULTIMATE.start_main_~i~0#1|) .cse4) .cse5 .cse6 .cse7) (and .cse0 .cse1 .cse2 .cse3 .cse5 .cse6 (= .cse4 (+ |ULTIMATE.start_main_~i~0#1| 8)) .cse7) (and .cse0 (= .cse4 (+ |ULTIMATE.start_main_~i~0#1| 1)) .cse1 .cse2 .cse3 .cse5 .cse6 .cse7) (and .cse0 .cse1 .cse2 .cse3 .cse5 .cse6 (= .cse4 (+ 6 |ULTIMATE.start_main_~i~0#1|)) .cse7) (and .cse0 (= .cse4 |ULTIMATE.start_main_~i~0#1|) .cse1 .cse2 .cse3 .cse5 .cse6 .cse7) (and .cse0 (= .cse4 (+ 9 |ULTIMATE.start_main_~i~0#1|)) .cse1 .cse2 .cse3 .cse5 .cse6 .cse7) (and .cse0 .cse1 (= .cse4 (+ 2 |ULTIMATE.start_main_~i~0#1|)) .cse2 .cse3 .cse5 .cse6 .cse7) (and .cse0 .cse1 .cse2 .cse3 (= (+ |ULTIMATE.start_main_~i~0#1| 4) .cse4) .cse5 .cse6 .cse7) (and .cse0 (= .cse4 (+ 7 |ULTIMATE.start_main_~i~0#1|)) .cse1 .cse2 .cse3 .cse5 .cse6 .cse7))) [2021-12-07 00:16:55,300 INFO L858 garLoopResultBuilder]: For program point L40-4(lines 40 42) no Hoare annotation was computed. [2021-12-07 00:16:55,301 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-07 00:16:55,301 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-07 00:16:55,301 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-07 00:16:55,301 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 50) no Hoare annotation was computed. [2021-12-07 00:16:55,301 INFO L861 garLoopResultBuilder]: At program point L51(lines 32 52) the Hoare annotation is: true [2021-12-07 00:16:55,301 INFO L858 garLoopResultBuilder]: For program point L43(lines 43 45) no Hoare annotation was computed. [2021-12-07 00:16:55,301 INFO L858 garLoopResultBuilder]: For program point L37(line 37) no Hoare annotation was computed. [2021-12-07 00:16:55,301 INFO L854 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (and (not (= |~#d1~0.base| |~#d2~0.base|)) (= |~#d1~0.base| 4) (= |~#d1~0.offset| 0)) [2021-12-07 00:16:55,301 INFO L858 garLoopResultBuilder]: For program point L37-2(lines 37 46) no Hoare annotation was computed. [2021-12-07 00:16:55,301 INFO L858 garLoopResultBuilder]: For program point L35-1(line 35) no Hoare annotation was computed. [2021-12-07 00:16:55,303 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2021-12-07 00:16:55,304 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-07 00:16:55,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 12:16:55 BoogieIcfgContainer [2021-12-07 00:16:55,324 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-07 00:16:55,324 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-07 00:16:55,325 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-07 00:16:55,325 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-07 00:16:55,325 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:16:44" (3/4) ... [2021-12-07 00:16:55,327 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-07 00:16:55,331 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure get_dummy [2021-12-07 00:16:55,334 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-12-07 00:16:55,335 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-12-07 00:16:55,335 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-07 00:16:55,335 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-07 00:16:55,350 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!(d1 == d2) && unknown-#memory_int-unknown[pd2][pd2] == i) && d1 == 4) && 1 <= \result) && pd1 == pd2) && pd2 == pd1) && d1 == 0) && pa == pd2) && pd2 == pa [2021-12-07 00:16:55,361 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a45e07-0253-4bf4-85fc-d9ce29416f65/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-07 00:16:55,361 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-07 00:16:55,361 INFO L158 Benchmark]: Toolchain (without parser) took 11115.20ms. Allocated memory was 134.2MB in the beginning and 161.5MB in the end (delta: 27.3MB). Free memory was 90.6MB in the beginning and 109.5MB in the end (delta: -18.9MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2021-12-07 00:16:55,362 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 134.2MB. Free memory is still 107.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 00:16:55,362 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.49ms. Allocated memory is still 134.2MB. Free memory was 90.5MB in the beginning and 108.9MB in the end (delta: -18.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-07 00:16:55,362 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.34ms. Allocated memory is still 134.2MB. Free memory was 108.9MB in the beginning and 107.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 00:16:55,362 INFO L158 Benchmark]: Boogie Preprocessor took 22.06ms. Allocated memory is still 134.2MB. Free memory was 107.2MB in the beginning and 105.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 00:16:55,363 INFO L158 Benchmark]: RCFGBuilder took 224.16ms. Allocated memory is still 134.2MB. Free memory was 105.7MB in the beginning and 94.7MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-07 00:16:55,363 INFO L158 Benchmark]: TraceAbstraction took 10600.98ms. Allocated memory was 134.2MB in the beginning and 161.5MB in the end (delta: 27.3MB). Free memory was 94.2MB in the beginning and 113.7MB in the end (delta: -19.5MB). Peak memory consumption was 81.5MB. Max. memory is 16.1GB. [2021-12-07 00:16:55,363 INFO L158 Benchmark]: Witness Printer took 36.50ms. Allocated memory is still 161.5MB. Free memory was 113.7MB in the beginning and 109.5MB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 00:16:55,364 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 134.2MB. Free memory is still 107.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 194.49ms. Allocated memory is still 134.2MB. Free memory was 90.5MB in the beginning and 108.9MB in the end (delta: -18.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.34ms. Allocated memory is still 134.2MB. Free memory was 108.9MB in the beginning and 107.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.06ms. Allocated memory is still 134.2MB. Free memory was 107.2MB in the beginning and 105.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 224.16ms. Allocated memory is still 134.2MB. Free memory was 105.7MB in the beginning and 94.7MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 10600.98ms. Allocated memory was 134.2MB in the beginning and 161.5MB in the end (delta: 27.3MB). Free memory was 94.2MB in the beginning and 113.7MB in the end (delta: -19.5MB). Peak memory consumption was 81.5MB. Max. memory is 16.1GB. * Witness Printer took 36.50ms. Allocated memory is still 161.5MB. Free memory was 113.7MB in the beginning and 109.5MB in the end (delta: 4.2MB). 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: 50]: 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 2 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.5s, OverallIterations: 5, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 680 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 674 mSDsluCounter, 867 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 771 mSDsCounter, 549 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2292 IncrementalHoareTripleChecker+Invalid, 2841 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 549 mSolverCounterUnsat, 96 mSDtfsCounter, 2292 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 544 GetRequests, 253 SyntacticMatches, 1 SemanticMatches, 290 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6205 ImplicationChecksByTransitivity, 5.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=4, InterpolantAutomatonStates: 179, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 57 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 55 NumberOfFragments, 420 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 6100 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 320 NumberOfCodeBlocks, 304 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 453 ConstructedInterpolants, 0 QuantifiedInterpolants, 2589 SizeOfPredicates, 49 NumberOfNonLiveVariables, 743 ConjunctsInSsa, 156 ConjunctsInUnsatCore, 13 InterpolantComputations, 2 PerfectInterpolantSequences, 272/552 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: 40]: Loop Invariant Derived loop invariant: ((((((((((((((((!(d1 == d2) && d1 == 4) && pd1 == pd2) && pd2 == pd1) && 5 + i == unknown-#memory_int-unknown[pd2][pd2]) && d1 == 0) && pa == pd2) && pd2 == pa) || (((((((!(d1 == d2) && unknown-#memory_int-unknown[pd2][pd2] == i + 10) && d1 == 4) && pd1 == pd2) && pd2 == pd1) && d1 == 0) && pa == pd2) && pd2 == pa)) || (((((((!(d1 == d2) && d1 == 4) && pd1 == pd2) && pd2 == pd1) && 3 + i == unknown-#memory_int-unknown[pd2][pd2]) && d1 == 0) && pa == pd2) && pd2 == pa)) || (((((((!(d1 == d2) && d1 == 4) && pd1 == pd2) && pd2 == pd1) && d1 == 0) && pa == pd2) && unknown-#memory_int-unknown[pd2][pd2] == i + 8) && pd2 == pa)) || (((((((!(d1 == d2) && unknown-#memory_int-unknown[pd2][pd2] == i + 1) && d1 == 4) && pd1 == pd2) && pd2 == pd1) && d1 == 0) && pa == pd2) && pd2 == pa)) || (((((((!(d1 == d2) && d1 == 4) && pd1 == pd2) && pd2 == pd1) && d1 == 0) && pa == pd2) && unknown-#memory_int-unknown[pd2][pd2] == 6 + i) && pd2 == pa)) || (((((((!(d1 == d2) && unknown-#memory_int-unknown[pd2][pd2] == i) && d1 == 4) && pd1 == pd2) && pd2 == pd1) && d1 == 0) && pa == pd2) && pd2 == pa)) || (((((((!(d1 == d2) && unknown-#memory_int-unknown[pd2][pd2] == 9 + i) && d1 == 4) && pd1 == pd2) && pd2 == pd1) && d1 == 0) && pa == pd2) && pd2 == pa)) || (((((((!(d1 == d2) && d1 == 4) && unknown-#memory_int-unknown[pd2][pd2] == 2 + i) && pd1 == pd2) && pd2 == pd1) && d1 == 0) && pa == pd2) && pd2 == pa)) || (((((((!(d1 == d2) && d1 == 4) && pd1 == pd2) && pd2 == pd1) && i + 4 == unknown-#memory_int-unknown[pd2][pd2]) && d1 == 0) && pa == pd2) && pd2 == pa)) || (((((((!(d1 == d2) && unknown-#memory_int-unknown[pd2][pd2] == 7 + i) && d1 == 4) && pd1 == pd2) && pd2 == pd1) && d1 == 0) && pa == pd2) && pd2 == pa) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: (((((((!(d1 == d2) && unknown-#memory_int-unknown[pd2][pd2] == i) && d1 == 4) && 1 <= \result) && pd1 == pd2) && pd2 == pd1) && d1 == 0) && pa == pd2) && pd2 == pa RESULT: Ultimate proved your program to be correct! [2021-12-07 00:16:55,405 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5a45e07-0253-4bf4-85fc-d9ce29416f65/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE