./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d21c66-38fa-4316-80c3-d8acfe7207f4/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d21c66-38fa-4316-80c3-d8acfe7207f4/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d21c66-38fa-4316-80c3-d8acfe7207f4/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d21c66-38fa-4316-80c3-d8acfe7207f4/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d21c66-38fa-4316-80c3-d8acfe7207f4/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d21c66-38fa-4316-80c3-d8acfe7207f4/bin/uautomizer-Z5i5R5N3CC --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 500cb8735f650eb0e7c33062ddc23c2166b17f19 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:33:55,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:33:55,379 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:33:55,440 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:33:55,441 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:33:55,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:33:55,450 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:33:55,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:33:55,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:33:55,465 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:33:55,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:33:55,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:33:55,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:33:55,473 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:33:55,475 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:33:55,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:33:55,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:33:55,485 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:33:55,488 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:33:55,499 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:33:55,501 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:33:55,503 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:33:55,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:33:55,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:33:55,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:33:55,518 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:33:55,519 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:33:55,521 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:33:55,522 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:33:55,524 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:33:55,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:33:55,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:33:55,528 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:33:55,529 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:33:55,531 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:33:55,531 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:33:55,532 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:33:55,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:33:55,533 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:33:55,534 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:33:55,535 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:33:55,538 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d21c66-38fa-4316-80c3-d8acfe7207f4/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-10-11 00:33:55,585 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:33:55,585 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:33:55,587 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:33:55,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:33:55,588 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:33:55,588 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:33:55,589 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 00:33:55,589 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:33:55,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:33:55,596 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:33:55,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:33:55,598 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:33:55,598 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-11 00:33:55,598 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:33:55,598 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:33:55,598 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:33:55,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:33:55,599 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:33:55,599 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:33:55,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:33:55,601 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:33:55,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:33:55,607 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:33:55,607 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:33:55,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:33:55,608 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:33:55,608 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:33:55,608 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_89d21c66-38fa-4316-80c3-d8acfe7207f4/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d21c66-38fa-4316-80c3-d8acfe7207f4/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 500cb8735f650eb0e7c33062ddc23c2166b17f19 [2021-10-11 00:33:55,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:33:55,911 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:33:55,914 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:33:55,918 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:33:55,919 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:33:55,920 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d21c66-38fa-4316-80c3-d8acfe7207f4/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi3.c [2021-10-11 00:33:56,027 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d21c66-38fa-4316-80c3-d8acfe7207f4/bin/uautomizer-Z5i5R5N3CC/data/aa217fee4/fc44f9eb4643420b9783d810c053f6bd/FLAG94c1a5f91 [2021-10-11 00:33:56,633 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:33:56,634 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d21c66-38fa-4316-80c3-d8acfe7207f4/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi3.c [2021-10-11 00:33:56,650 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d21c66-38fa-4316-80c3-d8acfe7207f4/bin/uautomizer-Z5i5R5N3CC/data/aa217fee4/fc44f9eb4643420b9783d810c053f6bd/FLAG94c1a5f91 [2021-10-11 00:33:57,006 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d21c66-38fa-4316-80c3-d8acfe7207f4/bin/uautomizer-Z5i5R5N3CC/data/aa217fee4/fc44f9eb4643420b9783d810c053f6bd [2021-10-11 00:33:57,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:33:57,018 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:33:57,021 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:33:57,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:33:57,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:33:57,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:33:57" (1/1) ... [2021-10-11 00:33:57,032 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13d0aef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:33:57, skipping insertion in model container [2021-10-11 00:33:57,032 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:33:57" (1/1) ... [2021-10-11 00:33:57,042 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:33:57,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:33:57,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:33:57,256 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:33:57,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:33:57,288 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:33:57,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:33:57 WrapperNode [2021-10-11 00:33:57,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:33:57,290 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:33:57,290 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:33:57,290 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:33:57,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:33:57" (1/1) ... [2021-10-11 00:33:57,304 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:33:57" (1/1) ... [2021-10-11 00:33:57,322 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:33:57,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:33:57,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:33:57,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:33:57,332 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:33:57" (1/1) ... [2021-10-11 00:33:57,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:33:57" (1/1) ... [2021-10-11 00:33:57,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:33:57" (1/1) ... [2021-10-11 00:33:57,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:33:57" (1/1) ... [2021-10-11 00:33:57,336 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:33:57" (1/1) ... [2021-10-11 00:33:57,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:33:57" (1/1) ... [2021-10-11 00:33:57,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:33:57" (1/1) ... [2021-10-11 00:33:57,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:33:57,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:33:57,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:33:57,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:33:57,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:33:57" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d21c66-38fa-4316-80c3-d8acfe7207f4/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:33:57,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:33:57,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:33:57,709 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:33:57,710 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-11 00:33:57,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:33:57 BoogieIcfgContainer [2021-10-11 00:33:57,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:33:57,716 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:33:57,716 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:33:57,719 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:33:57,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:33:57" (1/3) ... [2021-10-11 00:33:57,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fbdf441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:33:57, skipping insertion in model container [2021-10-11 00:33:57,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:33:57" (2/3) ... [2021-10-11 00:33:57,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fbdf441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:33:57, skipping insertion in model container [2021-10-11 00:33:57,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:33:57" (3/3) ... [2021-10-11 00:33:57,727 INFO L111 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-speedpldi3.c [2021-10-11 00:33:57,743 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:33:57,747 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2021-10-11 00:33:57,759 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-11 00:33:57,794 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:33:57,794 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:33:57,795 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:33:57,795 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:33:57,795 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:33:57,795 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:33:57,796 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:33:57,796 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:33:57,817 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2021-10-11 00:33:57,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 00:33:57,823 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:33:57,824 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 00:33:57,825 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:33:57,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:33:57,834 INFO L82 PathProgramCache]: Analyzing trace with hash 29684842, now seen corresponding path program 1 times [2021-10-11 00:33:57,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:33:57,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864135449] [2021-10-11 00:33:57,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:33:57,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:33:57,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:33:57,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864135449] [2021-10-11 00:33:57,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:33:57,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:33:58,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067382771] [2021-10-11 00:33:58,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:33:58,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:33:58,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:33:58,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:33:58,025 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2021-10-11 00:33:58,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:33:58,126 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2021-10-11 00:33:58,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:33:58,129 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2021-10-11 00:33:58,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:33:58,139 INFO L225 Difference]: With dead ends: 29 [2021-10-11 00:33:58,140 INFO L226 Difference]: Without dead ends: 16 [2021-10-11 00:33:58,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:33:58,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-11 00:33:58,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2021-10-11 00:33:58,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-11 00:33:58,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-10-11 00:33:58,212 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 5 [2021-10-11 00:33:58,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:33:58,226 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-10-11 00:33:58,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:33:58,227 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-10-11 00:33:58,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 00:33:58,238 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:33:58,238 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 00:33:58,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:33:58,239 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:33:58,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:33:58,240 INFO L82 PathProgramCache]: Analyzing trace with hash 29685034, now seen corresponding path program 1 times [2021-10-11 00:33:58,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:33:58,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041125608] [2021-10-11 00:33:58,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:33:58,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:33:58,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:33:58,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041125608] [2021-10-11 00:33:58,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:33:58,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:33:58,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003917491] [2021-10-11 00:33:58,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:33:58,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:33:58,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:33:58,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:33:58,311 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 3 states. [2021-10-11 00:33:58,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:33:58,340 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2021-10-11 00:33:58,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:33:58,341 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2021-10-11 00:33:58,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:33:58,342 INFO L225 Difference]: With dead ends: 30 [2021-10-11 00:33:58,343 INFO L226 Difference]: Without dead ends: 17 [2021-10-11 00:33:58,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:33:58,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-11 00:33:58,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-11 00:33:58,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-11 00:33:58,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-10-11 00:33:58,349 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 5 [2021-10-11 00:33:58,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:33:58,350 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-10-11 00:33:58,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:33:58,350 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-10-11 00:33:58,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 00:33:58,351 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:33:58,351 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 00:33:58,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:33:58,352 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:33:58,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:33:58,353 INFO L82 PathProgramCache]: Analyzing trace with hash 920230152, now seen corresponding path program 1 times [2021-10-11 00:33:58,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:33:58,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973563998] [2021-10-11 00:33:58,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:33:58,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:33:58,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:33:58,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973563998] [2021-10-11 00:33:58,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:33:58,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:33:58,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830887243] [2021-10-11 00:33:58,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:33:58,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:33:58,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:33:58,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:33:58,390 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 3 states. [2021-10-11 00:33:58,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:33:58,414 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2021-10-11 00:33:58,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:33:58,424 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2021-10-11 00:33:58,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:33:58,425 INFO L225 Difference]: With dead ends: 17 [2021-10-11 00:33:58,425 INFO L226 Difference]: Without dead ends: 16 [2021-10-11 00:33:58,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:33:58,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-11 00:33:58,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-11 00:33:58,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-11 00:33:58,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-10-11 00:33:58,431 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 6 [2021-10-11 00:33:58,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:33:58,431 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-10-11 00:33:58,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:33:58,432 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-10-11 00:33:58,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 00:33:58,432 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:33:58,432 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2021-10-11 00:33:58,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 00:33:58,433 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:33:58,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:33:58,434 INFO L82 PathProgramCache]: Analyzing trace with hash -199749339, now seen corresponding path program 1 times [2021-10-11 00:33:58,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:33:58,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671450406] [2021-10-11 00:33:58,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:33:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:33:58,517 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:33:58,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671450406] [2021-10-11 00:33:58,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066910646] [2021-10-11 00:33:58,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d21c66-38fa-4316-80c3-d8acfe7207f4/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:33:58,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:33:58,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 00:33:58,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:33:58,636 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:33:58,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:33:58,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-10-11 00:33:58,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729286871] [2021-10-11 00:33:58,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:33:58,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:33:58,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:33:58,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:33:58,640 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 4 states. [2021-10-11 00:33:58,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:33:58,677 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2021-10-11 00:33:58,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:33:58,677 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-10-11 00:33:58,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:33:58,678 INFO L225 Difference]: With dead ends: 22 [2021-10-11 00:33:58,678 INFO L226 Difference]: Without dead ends: 21 [2021-10-11 00:33:58,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:33:58,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-11 00:33:58,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2021-10-11 00:33:58,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-10-11 00:33:58,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-10-11 00:33:58,685 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 9 [2021-10-11 00:33:58,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:33:58,685 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-10-11 00:33:58,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:33:58,685 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-10-11 00:33:58,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 00:33:58,686 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:33:58,686 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:33:58,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:33:58,903 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:33:58,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:33:58,903 INFO L82 PathProgramCache]: Analyzing trace with hash -199749147, now seen corresponding path program 1 times [2021-10-11 00:33:58,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:33:58,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543281211] [2021-10-11 00:33:58,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:33:58,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:33:58,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 00:33:58,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543281211] [2021-10-11 00:33:58,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:33:58,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:33:58,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986198957] [2021-10-11 00:33:58,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:33:58,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:33:58,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:33:58,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:33:58,937 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 3 states. [2021-10-11 00:33:58,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:33:58,960 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2021-10-11 00:33:58,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:33:58,961 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2021-10-11 00:33:58,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:33:58,962 INFO L225 Difference]: With dead ends: 33 [2021-10-11 00:33:58,962 INFO L226 Difference]: Without dead ends: 32 [2021-10-11 00:33:58,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:33:58,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-11 00:33:58,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2021-10-11 00:33:58,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-10-11 00:33:58,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2021-10-11 00:33:58,969 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 9 [2021-10-11 00:33:58,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:33:58,970 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2021-10-11 00:33:58,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:33:58,970 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2021-10-11 00:33:58,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 00:33:58,971 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:33:58,971 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:33:58,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 00:33:58,971 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:33:58,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:33:58,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1897256205, now seen corresponding path program 1 times [2021-10-11 00:33:58,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:33:58,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741510991] [2021-10-11 00:33:58,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:33:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:33:59,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 00:33:59,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741510991] [2021-10-11 00:33:59,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:33:59,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:33:59,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613518066] [2021-10-11 00:33:59,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:33:59,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:33:59,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:33:59,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:33:59,010 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 3 states. [2021-10-11 00:33:59,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:33:59,026 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2021-10-11 00:33:59,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:33:59,027 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2021-10-11 00:33:59,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:33:59,028 INFO L225 Difference]: With dead ends: 30 [2021-10-11 00:33:59,028 INFO L226 Difference]: Without dead ends: 29 [2021-10-11 00:33:59,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:33:59,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-11 00:33:59,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-11 00:33:59,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-10-11 00:33:59,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2021-10-11 00:33:59,036 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 10 [2021-10-11 00:33:59,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:33:59,037 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-10-11 00:33:59,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:33:59,037 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2021-10-11 00:33:59,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 00:33:59,038 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:33:59,038 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1] [2021-10-11 00:33:59,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 00:33:59,039 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:33:59,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:33:59,039 INFO L82 PathProgramCache]: Analyzing trace with hash 432560224, now seen corresponding path program 2 times [2021-10-11 00:33:59,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:33:59,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60345106] [2021-10-11 00:33:59,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:33:59,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:33:59,152 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-11 00:33:59,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60345106] [2021-10-11 00:33:59,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438622482] [2021-10-11 00:33:59,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d21c66-38fa-4316-80c3-d8acfe7207f4/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:33:59,265 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-11 00:33:59,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:33:59,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 00:33:59,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:33:59,360 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-11 00:33:59,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:33:59,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-10-11 00:33:59,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11683107] [2021-10-11 00:33:59,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:33:59,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:33:59,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:33:59,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:33:59,362 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand 5 states. [2021-10-11 00:33:59,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:33:59,409 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2021-10-11 00:33:59,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:33:59,410 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2021-10-11 00:33:59,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:33:59,411 INFO L225 Difference]: With dead ends: 29 [2021-10-11 00:33:59,411 INFO L226 Difference]: Without dead ends: 28 [2021-10-11 00:33:59,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:33:59,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-11 00:33:59,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 16. [2021-10-11 00:33:59,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-11 00:33:59,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-10-11 00:33:59,416 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 13 [2021-10-11 00:33:59,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:33:59,416 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-10-11 00:33:59,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:33:59,417 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-10-11 00:33:59,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 00:33:59,417 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:33:59,417 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:33:59,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:33:59,643 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:33:59,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:33:59,643 INFO L82 PathProgramCache]: Analyzing trace with hash 610055194, now seen corresponding path program 1 times [2021-10-11 00:33:59,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:33:59,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713175385] [2021-10-11 00:33:59,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:33:59,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:33:59,689 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 00:33:59,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713175385] [2021-10-11 00:33:59,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58773535] [2021-10-11 00:33:59,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d21c66-38fa-4316-80c3-d8acfe7207f4/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:33:59,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:33:59,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 00:33:59,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:33:59,813 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 00:33:59,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:33:59,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2021-10-11 00:33:59,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673258635] [2021-10-11 00:33:59,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 00:33:59,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:33:59,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:33:59,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:33:59,823 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 6 states. [2021-10-11 00:33:59,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:33:59,951 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2021-10-11 00:33:59,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 00:33:59,953 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2021-10-11 00:33:59,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:33:59,954 INFO L225 Difference]: With dead ends: 34 [2021-10-11 00:33:59,957 INFO L226 Difference]: Without dead ends: 27 [2021-10-11 00:33:59,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-10-11 00:33:59,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-11 00:33:59,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2021-10-11 00:33:59,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-10-11 00:33:59,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2021-10-11 00:33:59,971 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 13 [2021-10-11 00:33:59,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:33:59,972 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2021-10-11 00:33:59,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 00:33:59,972 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2021-10-11 00:33:59,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-11 00:33:59,978 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:33:59,978 INFO L422 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 3, 2, 2, 1, 1, 1] [2021-10-11 00:34:00,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:34:00,179 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:34:00,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:34:00,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1201123269, now seen corresponding path program 2 times [2021-10-11 00:34:00,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:34:00,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261491512] [2021-10-11 00:34:00,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:34:00,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:34:00,271 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-11 00:34:00,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261491512] [2021-10-11 00:34:00,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146233124] [2021-10-11 00:34:00,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d21c66-38fa-4316-80c3-d8acfe7207f4/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:34:00,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-11 00:34:00,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:34:00,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 00:34:00,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:34:00,423 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-10-11 00:34:00,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:34:00,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2021-10-11 00:34:00,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200453164] [2021-10-11 00:34:00,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:34:00,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:34:00,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:34:00,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:34:00,426 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 4 states. [2021-10-11 00:34:00,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:34:00,447 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-10-11 00:34:00,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:34:00,448 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2021-10-11 00:34:00,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:34:00,449 INFO L225 Difference]: With dead ends: 26 [2021-10-11 00:34:00,449 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 00:34:00,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:34:00,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 00:34:00,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 00:34:00,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 00:34:00,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 00:34:00,451 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2021-10-11 00:34:00,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:34:00,451 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:34:00,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:34:00,451 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 00:34:00,452 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 00:34:00,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:34:00,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 00:34:00,786 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-10-11 00:34:00,786 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 00:34:00,787 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-10-11 00:34:00,787 INFO L265 CegarLoopResult]: At program point L29(lines 13 30) the Hoare annotation is: true [2021-10-11 00:34:00,787 INFO L262 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2021-10-11 00:34:00,788 INFO L262 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2021-10-11 00:34:00,788 INFO L262 CegarLoopResult]: For program point L21(lines 21 26) no Hoare annotation was computed. [2021-10-11 00:34:00,791 INFO L258 CegarLoopResult]: At program point L21-2(lines 20 27) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~i~0)) (.cse1 (<= 0 ULTIMATE.start_main_~j~0)) (.cse2 (<= ULTIMATE.start_main_~n~0 2147483647)) (.cse3 (<= ULTIMATE.start_main_~m~0 2147483646))) (or (and .cse0 .cse1 .cse2 (<= (+ ULTIMATE.start_main_~j~0 1) ULTIMATE.start_main_~m~0) .cse3) (and .cse0 .cse1 (<= ULTIMATE.start_main_~i~0 2147483646) .cse2 (<= 1 ULTIMATE.start_main_~m~0) .cse3))) [2021-10-11 00:34:00,791 INFO L262 CegarLoopResult]: For program point L17(lines 17 28) no Hoare annotation was computed. [2021-10-11 00:34:00,792 INFO L262 CegarLoopResult]: For program point L17-1(lines 17 28) no Hoare annotation was computed. [2021-10-11 00:34:00,792 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-10-11 00:34:00,792 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-10-11 00:34:00,792 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 00:34:00,792 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-11 00:34:00,792 INFO L262 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2021-10-11 00:34:00,793 INFO L262 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2021-10-11 00:34:00,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:34:00 BoogieIcfgContainer [2021-10-11 00:34:00,817 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:34:00,819 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:34:00,819 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:34:00,819 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:34:00,820 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:33:57" (3/4) ... [2021-10-11 00:34:00,824 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 00:34:00,837 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-11 00:34:00,837 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 00:34:00,893 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d21c66-38fa-4316-80c3-d8acfe7207f4/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:34:00,894 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:34:00,901 INFO L168 Benchmark]: Toolchain (without parser) took 3876.18 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 54.2 MB in the beginning and 59.0 MB in the end (delta: -4.8 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2021-10-11 00:34:00,902 INFO L168 Benchmark]: CDTParser took 10.22 ms. Allocated memory is still 88.1 MB. Free memory was 57.1 MB in the beginning and 70.3 MB in the end (delta: -13.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:34:00,903 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.78 ms. Allocated memory is still 88.1 MB. Free memory was 54.0 MB in the beginning and 66.6 MB in the end (delta: -12.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:34:00,903 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.22 ms. Allocated memory is still 88.1 MB. Free memory was 66.6 MB in the beginning and 65.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:34:00,904 INFO L168 Benchmark]: Boogie Preprocessor took 20.59 ms. Allocated memory is still 88.1 MB. Free memory was 65.5 MB in the beginning and 64.5 MB in the end (delta: 984.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:34:00,905 INFO L168 Benchmark]: RCFGBuilder took 369.54 ms. Allocated memory is still 88.1 MB. Free memory was 64.5 MB in the beginning and 54.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:34:00,905 INFO L168 Benchmark]: TraceAbstraction took 3102.01 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 54.3 MB in the beginning and 61.1 MB in the end (delta: -6.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 00:34:00,906 INFO L168 Benchmark]: Witness Printer took 75.40 ms. Allocated memory is still 107.0 MB. Free memory was 61.1 MB in the beginning and 59.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:34:00,910 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 10.22 ms. Allocated memory is still 88.1 MB. Free memory was 57.1 MB in the beginning and 70.3 MB in the end (delta: -13.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 267.78 ms. Allocated memory is still 88.1 MB. Free memory was 54.0 MB in the beginning and 66.6 MB in the end (delta: -12.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.22 ms. Allocated memory is still 88.1 MB. Free memory was 66.6 MB in the beginning and 65.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.59 ms. Allocated memory is still 88.1 MB. Free memory was 65.5 MB in the beginning and 64.5 MB in the end (delta: 984.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 369.54 ms. Allocated memory is still 88.1 MB. Free memory was 64.5 MB in the beginning and 54.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3102.01 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 54.3 MB in the beginning and 61.1 MB in the end (delta: -6.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Witness Printer took 75.40 ms. Allocated memory is still 107.0 MB. Free memory was 61.1 MB in the beginning and 59.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: ((((0 <= i && 0 <= j) && n <= 2147483647) && j + 1 <= m) && m <= 2147483646) || (((((0 <= i && 0 <= j) && i <= 2147483646) && n <= 2147483647) && 1 <= m) && m <= 2147483646) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 9, TraceHistogramMax: 6, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 66 SDtfs, 77 SDslu, 18 SDs, 0 SdLazy, 97 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 60 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=5, 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, 9 MinimizatonAttempts, 17 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 10 NumberOfFragments, 39 HoareAnnotationTreeSize, 2 FomulaSimplifications, 288 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 155 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 142 ConstructedInterpolants, 0 QuantifiedInterpolants, 6114 SizeOfPredicates, 3 NumberOfNonLiveVariables, 100 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 13 InterpolantComputations, 5 PerfectInterpolantSequences, 79/124 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...