./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt --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 0564e568992a96ba006237c1af458e049de52506 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:17:26,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:17:26,908 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:17:26,962 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:17:26,962 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:17:26,967 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:17:26,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:17:26,973 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:17:26,976 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:17:26,984 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:17:26,985 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:17:26,987 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:17:26,987 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:17:26,990 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:17:26,993 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:17:26,998 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:17:27,000 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:17:27,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:17:27,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:17:27,011 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:17:27,013 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:17:27,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:17:27,018 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:17:27,019 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:17:27,023 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:17:27,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:17:27,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:17:27,026 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:17:27,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:17:27,028 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:17:27,029 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:17:27,030 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:17:27,032 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:17:27,033 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:17:27,035 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:17:27,035 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:17:27,036 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:17:27,036 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:17:27,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:17:27,037 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:17:27,038 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:17:27,039 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-10-13 00:17:27,077 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:17:27,077 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:17:27,078 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:17:27,078 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:17:27,079 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:17:27,079 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:17:27,080 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:17:27,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:17:27,080 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:17:27,080 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:17:27,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:17:27,081 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 00:17:27,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:17:27,081 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 00:17:27,081 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-13 00:17:27,082 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:17:27,082 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:17:27,082 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 00:17:27,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:17:27,083 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:17:27,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:17:27,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:17:27,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:17:27,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:17:27,084 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 00:17:27,084 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:17:27,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:17:27,085 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 00:17:27,085 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:17:27,085 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_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0564e568992a96ba006237c1af458e049de52506 [2021-10-13 00:17:27,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:17:27,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:17:27,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:17:27,385 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:17:27,386 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:17:27,387 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig1.c [2021-10-13 00:17:27,460 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/data/aae824f18/2770a547a48a495db4bb675b8b3957ec/FLAG71dca663b [2021-10-13 00:17:27,876 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:17:27,877 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig1.c [2021-10-13 00:17:27,888 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/data/aae824f18/2770a547a48a495db4bb675b8b3957ec/FLAG71dca663b [2021-10-13 00:17:28,269 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/data/aae824f18/2770a547a48a495db4bb675b8b3957ec [2021-10-13 00:17:28,271 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:17:28,272 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:17:28,288 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:17:28,288 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:17:28,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:17:28,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:17:28" (1/1) ... [2021-10-13 00:17:28,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58e73e5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:28, skipping insertion in model container [2021-10-13 00:17:28,293 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:17:28" (1/1) ... [2021-10-13 00:17:28,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:17:28,312 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:17:28,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:17:28,481 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:17:28,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:17:28,505 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:17:28,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:28 WrapperNode [2021-10-13 00:17:28,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:17:28,506 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:17:28,506 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:17:28,506 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:17:28,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:28" (1/1) ... [2021-10-13 00:17:28,523 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:28" (1/1) ... [2021-10-13 00:17:28,550 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:17:28,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:17:28,552 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:17:28,552 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:17:28,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:28" (1/1) ... [2021-10-13 00:17:28,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:28" (1/1) ... [2021-10-13 00:17:28,570 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:28" (1/1) ... [2021-10-13 00:17:28,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:28" (1/1) ... [2021-10-13 00:17:28,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:28" (1/1) ... [2021-10-13 00:17:28,577 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:28" (1/1) ... [2021-10-13 00:17:28,578 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:28" (1/1) ... [2021-10-13 00:17:28,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:17:28,582 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:17:28,582 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:17:28,582 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:17:28,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:28" (1/1) ... [2021-10-13 00:17:28,591 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:17:28,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:17:28,617 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:17:28,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:17:28,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:17:28,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:17:28,843 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:17:28,844 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-13 00:17:28,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:17:28 BoogieIcfgContainer [2021-10-13 00:17:28,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:17:28,849 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:17:28,849 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:17:28,853 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:17:28,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:17:28" (1/3) ... [2021-10-13 00:17:28,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45fcc457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:17:28, skipping insertion in model container [2021-10-13 00:17:28,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:17:28" (2/3) ... [2021-10-13 00:17:28,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45fcc457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:17:28, skipping insertion in model container [2021-10-13 00:17:28,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:17:28" (3/3) ... [2021-10-13 00:17:28,856 INFO L111 eAbstractionObserver]: Analyzing ICFG HeizmannHoenickeLeikePodelski-ATVA2013-Fig1.c [2021-10-13 00:17:28,865 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:17:28,865 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-13 00:17:28,923 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:17:28,935 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-10-13 00:17:28,936 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-13 00:17:28,954 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 13 states have internal predecessors, (15), 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) [2021-10-13 00:17:28,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 00:17:28,958 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:17:28,959 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 00:17:28,960 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-13 00:17:28,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:17:28,965 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2021-10-13 00:17:28,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:17:28,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019985144] [2021-10-13 00:17:28,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:17:28,974 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:17:29,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:17:29,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:17:29,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:17:29,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019985144] [2021-10-13 00:17:29,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019985144] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:17:29,102 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:17:29,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 00:17:29,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174054310] [2021-10-13 00:17:29,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:17:29,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:17:29,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:17:29,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:17:29,124 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-10-13 00:17:29,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:17:29,168 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2021-10-13 00:17:29,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:17:29,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-13 00:17:29,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:17:29,178 INFO L225 Difference]: With dead ends: 26 [2021-10-13 00:17:29,179 INFO L226 Difference]: Without dead ends: 13 [2021-10-13 00:17:29,181 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:17:29,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-13 00:17:29,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-10-13 00:17:29,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.5) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:17:29,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-10-13 00:17:29,212 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 3 [2021-10-13 00:17:29,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:17:29,213 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-10-13 00:17:29,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-10-13 00:17:29,213 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-10-13 00:17:29,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 00:17:29,214 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:17:29,214 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 00:17:29,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 00:17:29,214 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-13 00:17:29,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:17:29,215 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2021-10-13 00:17:29,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:17:29,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199829158] [2021-10-13 00:17:29,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:17:29,216 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:17:29,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:17:29,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:17:29,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:17:29,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199829158] [2021-10-13 00:17:29,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199829158] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:17:29,259 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:17:29,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:17:29,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297175508] [2021-10-13 00:17:29,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:17:29,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:17:29,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:17:29,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:17:29,275 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-13 00:17:29,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:17:29,363 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-10-13 00:17:29,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:17:29,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-13 00:17:29,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:17:29,365 INFO L225 Difference]: With dead ends: 17 [2021-10-13 00:17:29,365 INFO L226 Difference]: Without dead ends: 15 [2021-10-13 00:17:29,366 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:17:29,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-13 00:17:29,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2021-10-13 00:17:29,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.4) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:17:29,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-10-13 00:17:29,369 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 4 [2021-10-13 00:17:29,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:17:29,370 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-10-13 00:17:29,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-13 00:17:29,370 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-10-13 00:17:29,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 00:17:29,371 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:17:29,371 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 00:17:29,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 00:17:29,372 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-13 00:17:29,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:17:29,373 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2021-10-13 00:17:29,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:17:29,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989845879] [2021-10-13 00:17:29,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:17:29,374 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:17:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:17:29,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:17:29,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:17:29,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989845879] [2021-10-13 00:17:29,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989845879] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:17:29,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:17:29,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 00:17:29,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381419854] [2021-10-13 00:17:29,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:17:29,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:17:29,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:17:29,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:17:29,405 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:17:29,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:17:29,420 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-10-13 00:17:29,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:17:29,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 00:17:29,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:17:29,422 INFO L225 Difference]: With dead ends: 14 [2021-10-13 00:17:29,422 INFO L226 Difference]: Without dead ends: 13 [2021-10-13 00:17:29,423 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:17:29,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-13 00:17:29,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-13 00:17:29,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 10 states have (on average 1.3) internal successors, (13), 12 states have internal predecessors, (13), 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) [2021-10-13 00:17:29,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-10-13 00:17:29,426 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 6 [2021-10-13 00:17:29,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:17:29,427 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-10-13 00:17:29,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:17:29,427 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-10-13 00:17:29,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 00:17:29,428 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:17:29,428 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-10-13 00:17:29,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 00:17:29,429 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-13 00:17:29,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:17:29,430 INFO L82 PathProgramCache]: Analyzing trace with hash 577431471, now seen corresponding path program 1 times [2021-10-13 00:17:29,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:17:29,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877954078] [2021-10-13 00:17:29,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:17:29,431 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:17:29,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:17:29,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:17:29,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:17:29,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877954078] [2021-10-13 00:17:29,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877954078] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:17:29,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665419344] [2021-10-13 00:17:29,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:17:29,526 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:17:29,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:17:29,528 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:17:29,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 00:17:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:17:29,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 00:17:29,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:17:29,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:17:29,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665419344] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:17:29,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:17:29,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2021-10-13 00:17:29,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342868295] [2021-10-13 00:17:29,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:17:29,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:17:29,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:17:29,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:17:29,822 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-13 00:17:29,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:17:29,902 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-10-13 00:17:29,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:17:29,902 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 00:17:29,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:17:29,906 INFO L225 Difference]: With dead ends: 14 [2021-10-13 00:17:29,908 INFO L226 Difference]: Without dead ends: 13 [2021-10-13 00:17:29,909 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 109.6ms TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:17:29,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-13 00:17:29,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-10-13 00:17:29,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:17:29,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-10-13 00:17:29,915 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2021-10-13 00:17:29,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:17:29,917 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-10-13 00:17:29,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-13 00:17:29,917 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-10-13 00:17:29,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 00:17:29,918 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:17:29,918 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2021-10-13 00:17:29,956 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-13 00:17:30,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:17:30,136 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-13 00:17:30,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:17:30,137 INFO L82 PathProgramCache]: Analyzing trace with hash 720506461, now seen corresponding path program 1 times [2021-10-13 00:17:30,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:17:30,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41345031] [2021-10-13 00:17:30,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:17:30,138 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:17:30,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:17:30,208 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:17:30,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:17:30,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41345031] [2021-10-13 00:17:30,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41345031] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:17:30,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247076223] [2021-10-13 00:17:30,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:17:30,210 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:17:30,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:17:30,212 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:17:30,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 00:17:30,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:17:30,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:17:30,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:17:30,299 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:17:30,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247076223] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:17:30,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:17:30,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2021-10-13 00:17:30,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177955927] [2021-10-13 00:17:30,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:17:30,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:17:30,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:17:30,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:17:30,302 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:17:30,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:17:30,340 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-10-13 00:17:30,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:17:30,341 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-13 00:17:30,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:17:30,342 INFO L225 Difference]: With dead ends: 20 [2021-10-13 00:17:30,342 INFO L226 Difference]: Without dead ends: 18 [2021-10-13 00:17:30,342 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 27.8ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:17:30,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-13 00:17:30,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-10-13 00:17:30,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:17:30,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-10-13 00:17:30,346 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 9 [2021-10-13 00:17:30,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:17:30,347 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-10-13 00:17:30,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:17:30,347 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-10-13 00:17:30,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 00:17:30,348 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:17:30,348 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1] [2021-10-13 00:17:30,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:17:30,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:17:30,565 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-13 00:17:30,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:17:30,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1635256875, now seen corresponding path program 2 times [2021-10-13 00:17:30,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:17:30,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228489062] [2021-10-13 00:17:30,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:17:30,567 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:17:30,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:17:30,650 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:17:30,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:17:30,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228489062] [2021-10-13 00:17:30,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228489062] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:17:30,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366104906] [2021-10-13 00:17:30,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:17:30,651 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:17:30,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:17:30,656 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:17:30,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 00:17:30,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:17:30,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:17:30,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 00:17:30,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:17:30,821 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:17:30,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366104906] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:17:30,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:17:30,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-10-13 00:17:30,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427292420] [2021-10-13 00:17:30,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:17:30,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:17:30,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:17:30,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:17:30,825 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:17:30,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:17:30,900 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2021-10-13 00:17:30,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:17:30,900 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 00:17:30,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:17:30,901 INFO L225 Difference]: With dead ends: 25 [2021-10-13 00:17:30,901 INFO L226 Difference]: Without dead ends: 23 [2021-10-13 00:17:30,901 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 64.8ms TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:17:30,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-13 00:17:30,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-10-13 00:17:30,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.1) internal successors, (22), 21 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:17:30,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-10-13 00:17:30,905 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 14 [2021-10-13 00:17:30,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:17:30,906 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-10-13 00:17:30,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:17:30,906 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-10-13 00:17:30,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 00:17:30,907 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:17:30,907 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1] [2021-10-13 00:17:30,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:17:31,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-13 00:17:31,116 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-13 00:17:31,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:17:31,117 INFO L82 PathProgramCache]: Analyzing trace with hash 637353757, now seen corresponding path program 3 times [2021-10-13 00:17:31,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:17:31,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059207891] [2021-10-13 00:17:31,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:17:31,117 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:17:31,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:17:31,195 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:17:31,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:17:31,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059207891] [2021-10-13 00:17:31,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059207891] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:17:31,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124092942] [2021-10-13 00:17:31,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:17:31,196 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:17:31,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:17:31,197 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:17:31,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 00:17:31,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 00:17:31,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:17:31,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:17:31,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:17:31,385 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-13 00:17:31,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124092942] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:17:31,386 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:17:31,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 9 [2021-10-13 00:17:31,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436878837] [2021-10-13 00:17:31,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:17:31,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:17:31,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:17:31,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:17:31,390 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:17:31,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:17:31,437 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-10-13 00:17:31,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:17:31,438 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-13 00:17:31,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:17:31,439 INFO L225 Difference]: With dead ends: 22 [2021-10-13 00:17:31,440 INFO L226 Difference]: Without dead ends: 21 [2021-10-13 00:17:31,440 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 62.8ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:17:31,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-13 00:17:31,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-10-13 00:17:31,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 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) [2021-10-13 00:17:31,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2021-10-13 00:17:31,449 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2021-10-13 00:17:31,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:17:31,450 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2021-10-13 00:17:31,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:17:31,451 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2021-10-13 00:17:31,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 00:17:31,453 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:17:31,453 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1] [2021-10-13 00:17:31,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-13 00:17:31,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:17:31,678 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-13 00:17:31,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:17:31,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1716869967, now seen corresponding path program 1 times [2021-10-13 00:17:31,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:17:31,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693709202] [2021-10-13 00:17:31,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:17:31,680 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:17:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:17:31,732 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:17:31,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:17:31,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693709202] [2021-10-13 00:17:31,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693709202] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:17:31,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101115758] [2021-10-13 00:17:31,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:17:31,733 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:17:31,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:17:31,748 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:17:31,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 00:17:31,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:17:31,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 00:17:31,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:17:31,890 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:17:31,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101115758] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:17:31,892 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:17:31,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-13 00:17:31,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245776846] [2021-10-13 00:17:31,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:17:31,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:17:31,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:17:31,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:17:31,904 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:17:31,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:17:31,945 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2021-10-13 00:17:31,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:17:31,946 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 00:17:31,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:17:31,948 INFO L225 Difference]: With dead ends: 28 [2021-10-13 00:17:31,949 INFO L226 Difference]: Without dead ends: 27 [2021-10-13 00:17:31,949 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.5ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:17:31,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-13 00:17:31,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2021-10-13 00:17:31,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 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) [2021-10-13 00:17:31,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2021-10-13 00:17:31,956 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 20 [2021-10-13 00:17:31,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:17:31,956 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2021-10-13 00:17:31,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:17:31,956 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2021-10-13 00:17:31,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 00:17:31,957 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:17:31,957 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1] [2021-10-13 00:17:31,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-13 00:17:32,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:17:32,165 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-13 00:17:32,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:17:32,165 INFO L82 PathProgramCache]: Analyzing trace with hash -333652957, now seen corresponding path program 2 times [2021-10-13 00:17:32,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:17:32,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037147618] [2021-10-13 00:17:32,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:17:32,165 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:17:32,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:17:32,239 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:17:32,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:17:32,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037147618] [2021-10-13 00:17:32,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037147618] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:17:32,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620442546] [2021-10-13 00:17:32,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:17:32,240 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:17:32,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:17:32,244 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:17:32,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 00:17:32,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:17:32,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:17:32,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 00:17:32,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:17:32,403 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:17:32,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620442546] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:17:32,403 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:17:32,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-13 00:17:32,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473435586] [2021-10-13 00:17:32,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:17:32,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:17:32,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:17:32,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:17:32,405 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 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) [2021-10-13 00:17:32,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:17:32,438 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2021-10-13 00:17:32,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:17:32,439 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 00:17:32,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:17:32,439 INFO L225 Difference]: With dead ends: 33 [2021-10-13 00:17:32,440 INFO L226 Difference]: Without dead ends: 32 [2021-10-13 00:17:32,440 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.8ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:17:32,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-13 00:17:32,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2021-10-13 00:17:32,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 30 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:17:32,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2021-10-13 00:17:32,444 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 25 [2021-10-13 00:17:32,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:17:32,445 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2021-10-13 00:17:32,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 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) [2021-10-13 00:17:32,445 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2021-10-13 00:17:32,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-13 00:17:32,446 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:17:32,446 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1] [2021-10-13 00:17:32,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-13 00:17:32,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:17:32,663 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-13 00:17:32,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:17:32,664 INFO L82 PathProgramCache]: Analyzing trace with hash -302154767, now seen corresponding path program 3 times [2021-10-13 00:17:32,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:17:32,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833633312] [2021-10-13 00:17:32,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:17:32,664 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:17:32,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:17:32,731 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:17:32,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:17:32,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833633312] [2021-10-13 00:17:32,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833633312] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:17:32,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610019583] [2021-10-13 00:17:32,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:17:32,732 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:17:32,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:17:32,735 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:17:32,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-13 00:17:32,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-13 00:17:32,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:17:32,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 00:17:32,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:17:33,016 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 40 proven. 21 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 00:17:33,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610019583] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:17:33,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:17:33,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 14 [2021-10-13 00:17:33,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335269851] [2021-10-13 00:17:33,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 00:17:33,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:17:33,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 00:17:33,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-10-13 00:17:33,019 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand has 15 states, 14 states have (on average 3.857142857142857) internal successors, (54), 15 states have internal predecessors, (54), 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) [2021-10-13 00:17:33,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:17:33,478 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2021-10-13 00:17:33,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 00:17:33,479 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.857142857142857) internal successors, (54), 15 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-13 00:17:33,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:17:33,479 INFO L225 Difference]: With dead ends: 38 [2021-10-13 00:17:33,479 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 00:17:33,481 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 437.6ms TimeCoverageRelationStatistics Valid=336, Invalid=924, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 00:17:33,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 00:17:33,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 00:17:33,481 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) [2021-10-13 00:17:33,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 00:17:33,481 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2021-10-13 00:17:33,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:17:33,482 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:17:33,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.857142857142857) internal successors, (54), 15 states have internal predecessors, (54), 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) [2021-10-13 00:17:33,482 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 00:17:33,482 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 00:17:33,484 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 00:17:33,485 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 00:17:33,485 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 00:17:33,485 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 00:17:33,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-13 00:17:33,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-13 00:17:33,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 00:17:33,704 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:17:33,718 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:17:33,768 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-10-13 00:17:33,768 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 00:17:33,769 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2021-10-13 00:17:33,769 INFO L860 garLoopResultBuilder]: At program point L21(lines 13 22) the Hoare annotation is: true [2021-10-13 00:17:33,769 INFO L857 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-10-13 00:17:33,769 INFO L857 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2021-10-13 00:17:33,769 INFO L853 garLoopResultBuilder]: At program point L17-2(lines 17 20) the Hoare annotation is: (let ((.cse0 (<= 23 ULTIMATE.start_main_~y~0))) (or (and (<= ULTIMATE.start_main_~y~0 23) (<= ULTIMATE.start_main_~x~0 2147483647) .cse0) (and (<= ULTIMATE.start_main_~y~0 24) (<= ULTIMATE.start_main_~x~0 2147483624) .cse0) (and (<= ULTIMATE.start_main_~y~0 2147483647) (<= ULTIMATE.start_main_~y~0 (+ (div (+ (* ULTIMATE.start_main_~x~0 (- 1)) 2147483648) 2) 1)) .cse0))) [2021-10-13 00:17:33,769 INFO L857 garLoopResultBuilder]: For program point L17-3(lines 17 20) no Hoare annotation was computed. [2021-10-13 00:17:33,770 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-10-13 00:17:33,770 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2021-10-13 00:17:33,770 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 00:17:33,770 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 00:17:33,770 INFO L857 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-10-13 00:17:33,770 INFO L857 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-10-13 00:17:33,775 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:17:33,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:17:33 BoogieIcfgContainer [2021-10-13 00:17:33,788 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:17:33,789 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:17:33,789 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:17:33,789 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:17:33,790 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:17:28" (3/4) ... [2021-10-13 00:17:33,793 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 00:17:33,802 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-13 00:17:33,802 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-13 00:17:33,826 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:17:33,826 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:17:33,828 INFO L168 Benchmark]: Toolchain (without parser) took 5555.11 ms. Allocated memory is still 165.7 MB. Free memory was 130.9 MB in the beginning and 57.4 MB in the end (delta: 73.5 MB). Peak memory consumption was 73.0 MB. Max. memory is 16.1 GB. [2021-10-13 00:17:33,828 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 83.9 MB. Free memory was 54.8 MB in the beginning and 54.8 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:17:33,829 INFO L168 Benchmark]: CACSL2BoogieTranslator took 217.95 ms. Allocated memory is still 165.7 MB. Free memory was 130.9 MB in the beginning and 142.6 MB in the end (delta: -11.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:17:33,829 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.91 ms. Allocated memory is still 165.7 MB. Free memory was 142.6 MB in the beginning and 141.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:17:33,829 INFO L168 Benchmark]: Boogie Preprocessor took 28.97 ms. Allocated memory is still 165.7 MB. Free memory is still 140.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:17:33,830 INFO L168 Benchmark]: RCFGBuilder took 265.09 ms. Allocated memory is still 165.7 MB. Free memory was 139.6 MB in the beginning and 131.2 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:17:33,830 INFO L168 Benchmark]: TraceAbstraction took 4939.27 ms. Allocated memory is still 165.7 MB. Free memory was 131.2 MB in the beginning and 60.6 MB in the end (delta: 70.6 MB). Peak memory consumption was 73.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:17:33,830 INFO L168 Benchmark]: Witness Printer took 37.58 ms. Allocated memory is still 165.7 MB. Free memory was 59.5 MB in the beginning and 57.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:17:33,832 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 83.9 MB. Free memory was 54.8 MB in the beginning and 54.8 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 217.95 ms. Allocated memory is still 165.7 MB. Free memory was 130.9 MB in the beginning and 142.6 MB in the end (delta: -11.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.91 ms. Allocated memory is still 165.7 MB. Free memory was 142.6 MB in the beginning and 141.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.97 ms. Allocated memory is still 165.7 MB. Free memory is still 140.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 265.09 ms. Allocated memory is still 165.7 MB. Free memory was 139.6 MB in the beginning and 131.2 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4939.27 ms. Allocated memory is still 165.7 MB. Free memory was 131.2 MB in the beginning and 60.6 MB in the end (delta: 70.6 MB). Peak memory consumption was 73.5 MB. Max. memory is 16.1 GB. * Witness Printer took 37.58 ms. Allocated memory is still 165.7 MB. Free memory was 59.5 MB in the beginning and 57.4 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: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 4853.8ms, OverallIterations: 10, TraceHistogramMax: 6, EmptinessCheckTime: 16.8ms, AutomataDifference: 996.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 68.3ms, InitialAbstractionConstructionTime: 13.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 34 SDtfs, 86 SDslu, 19 SDs, 0 SdLazy, 258 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 284.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 179 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 786.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=9, InterpolantAutomatonStates: 73, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 54.8ms AutomataMinimizationTime, 10 MinimizatonAttempts, 7 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 11 NumberOfFragments, 40 HoareAnnotationTreeSize, 2 FomulaSimplifications, 150 FormulaSimplificationTreeSizeReduction, 15.5ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 36 FormulaSimplificationTreeSizeReductionInter, 47.3ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 32.5ms SsaConstructionTime, 171.9ms SatisfiabilityAnalysisTime, 1394.7ms InterpolantComputationTime, 263 NumberOfCodeBlocks, 248 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 246 ConstructedInterpolants, 0 QuantifiedInterpolants, 810 SizeOfPredicates, 1 NumberOfNonLiveVariables, 229 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 17 InterpolantComputations, 5 PerfectInterpolantSequences, 75/366 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 4 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((y <= 23 && x <= 2147483647) && 23 <= y) || ((y <= 24 && x <= 2147483624) && 23 <= y)) || ((y <= 2147483647 && y <= (x * -1 + 2147483648) / 2 + 1) && 23 <= y) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-13 00:17:33,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c75211-4fc5-4674-989b-d177edbe4f90/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...