./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Parallel.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76409d58-13ee-4ee7-9abc-c4186d0ea75d/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76409d58-13ee-4ee7-9abc-c4186d0ea75d/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76409d58-13ee-4ee7-9abc-c4186d0ea75d/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76409d58-13ee-4ee7-9abc-c4186d0ea75d/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/Parallel.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76409d58-13ee-4ee7-9abc-c4186d0ea75d/bin/uautomizer-UnR33cPsHg/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76409d58-13ee-4ee7-9abc-c4186d0ea75d/bin/uautomizer-UnR33cPsHg --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 6d237a1b253e1662249abfec0a27795a205783446cdc8f92e994520c562b96f7 ................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:36:17,050 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:36:17,053 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:36:17,116 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:36:17,117 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:36:17,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:36:17,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:36:17,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:36:17,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:36:17,127 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:36:17,128 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:36:17,129 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:36:17,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:36:17,132 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:36:17,134 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:36:17,135 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:36:17,137 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:36:17,138 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:36:17,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:36:17,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:36:17,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:36:17,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:36:17,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:36:17,151 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:36:17,155 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:36:17,156 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:36:17,156 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:36:17,157 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:36:17,158 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:36:17,159 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:36:17,160 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:36:17,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:36:17,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:36:17,163 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:36:17,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:36:17,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:36:17,166 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:36:17,167 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:36:17,167 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:36:17,169 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:36:17,170 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:36:17,171 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76409d58-13ee-4ee7-9abc-c4186d0ea75d/bin/uautomizer-UnR33cPsHg/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-10-28 08:36:17,202 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:36:17,205 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:36:17,206 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:36:17,207 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:36:17,208 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:36:17,209 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:36:17,209 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:36:17,209 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:36:17,210 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 08:36:17,210 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:36:17,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:36:17,212 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 08:36:17,212 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:36:17,212 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 08:36:17,213 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-28 08:36:17,213 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 08:36:17,213 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:36:17,213 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 08:36:17,214 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:36:17,214 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:36:17,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:36:17,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:36:17,215 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:36:17,215 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:36:17,215 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 08:36:17,215 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:36:17,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 08:36:17,216 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 08:36:17,216 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:36:17,216 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_76409d58-13ee-4ee7-9abc-c4186d0ea75d/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76409d58-13ee-4ee7-9abc-c4186d0ea75d/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d237a1b253e1662249abfec0a27795a205783446cdc8f92e994520c562b96f7 [2021-10-28 08:36:17,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:36:17,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:36:17,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:36:17,541 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:36:17,543 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:36:17,544 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76409d58-13ee-4ee7-9abc-c4186d0ea75d/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/termination-crafted/Parallel.c [2021-10-28 08:36:17,604 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76409d58-13ee-4ee7-9abc-c4186d0ea75d/bin/uautomizer-UnR33cPsHg/data/48db5222d/e0460064ca2d44a389b6dcc277fba971/FLAG3e972b7dd [2021-10-28 08:36:18,062 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:36:18,063 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76409d58-13ee-4ee7-9abc-c4186d0ea75d/sv-benchmarks/c/termination-crafted/Parallel.c [2021-10-28 08:36:18,069 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76409d58-13ee-4ee7-9abc-c4186d0ea75d/bin/uautomizer-UnR33cPsHg/data/48db5222d/e0460064ca2d44a389b6dcc277fba971/FLAG3e972b7dd [2021-10-28 08:36:18,450 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76409d58-13ee-4ee7-9abc-c4186d0ea75d/bin/uautomizer-UnR33cPsHg/data/48db5222d/e0460064ca2d44a389b6dcc277fba971 [2021-10-28 08:36:18,453 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:36:18,454 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 08:36:18,456 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:36:18,457 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:36:18,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:36:18,462 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:36:18" (1/1) ... [2021-10-28 08:36:18,463 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16e841c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:36:18, skipping insertion in model container [2021-10-28 08:36:18,463 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:36:18" (1/1) ... [2021-10-28 08:36:18,470 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:36:18,482 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:36:18,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:36:18,641 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:36:18,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:36:18,685 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:36:18,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:36:18 WrapperNode [2021-10-28 08:36:18,686 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:36:18,688 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 08:36:18,688 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 08:36:18,688 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 08:36:18,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:36:18" (1/1) ... [2021-10-28 08:36:18,701 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:36:18" (1/1) ... [2021-10-28 08:36:18,718 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 08:36:18,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:36:18,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:36:18,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:36:18,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:36:18" (1/1) ... [2021-10-28 08:36:18,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:36:18" (1/1) ... [2021-10-28 08:36:18,729 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:36:18" (1/1) ... [2021-10-28 08:36:18,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:36:18" (1/1) ... [2021-10-28 08:36:18,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:36:18" (1/1) ... [2021-10-28 08:36:18,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:36:18" (1/1) ... [2021-10-28 08:36:18,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:36:18" (1/1) ... [2021-10-28 08:36:18,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:36:18,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:36:18,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:36:18,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:36:18,744 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:36:18" (1/1) ... [2021-10-28 08:36:18,751 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:36:18,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76409d58-13ee-4ee7-9abc-c4186d0ea75d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:36:18,780 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76409d58-13ee-4ee7-9abc-c4186d0ea75d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:36:18,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76409d58-13ee-4ee7-9abc-c4186d0ea75d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:36:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:36:18,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:36:19,025 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:36:19,025 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-28 08:36:19,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:36:19 BoogieIcfgContainer [2021-10-28 08:36:19,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:36:19,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:36:19,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:36:19,037 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:36:19,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:36:18" (1/3) ... [2021-10-28 08:36:19,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f4dc188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:36:19, skipping insertion in model container [2021-10-28 08:36:19,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:36:18" (2/3) ... [2021-10-28 08:36:19,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f4dc188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:36:19, skipping insertion in model container [2021-10-28 08:36:19,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:36:19" (3/3) ... [2021-10-28 08:36:19,042 INFO L111 eAbstractionObserver]: Analyzing ICFG Parallel.c [2021-10-28 08:36:19,048 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:36:19,048 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-28 08:36:19,116 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:36:19,129 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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 [2021-10-28 08:36:19,129 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-28 08:36:19,150 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 10 states have (on average 1.7) internal successors, (17), 14 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) [2021-10-28 08:36:19,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-28 08:36:19,155 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:36:19,156 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-28 08:36:19,157 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-28 08:36:19,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:36:19,163 INFO L85 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2021-10-28 08:36:19,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:36:19,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529133381] [2021-10-28 08:36:19,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:36:19,174 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:36:19,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:36:19,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:36:19,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:36:19,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529133381] [2021-10-28 08:36:19,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529133381] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:36:19,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:36:19,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-28 08:36:19,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520620660] [2021-10-28 08:36:19,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:36:19,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:36:19,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:36:19,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:36:19,394 INFO L87 Difference]: Start difference. First operand has 15 states, 10 states have (on average 1.7) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2021-10-28 08:36:19,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:36:19,453 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-10-28 08:36:19,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:36:19,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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 [2021-10-28 08:36:19,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:36:19,463 INFO L225 Difference]: With dead ends: 19 [2021-10-28 08:36:19,464 INFO L226 Difference]: Without dead ends: 10 [2021-10-28 08:36:19,466 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:36:19,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-28 08:36:19,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-28 08:36:19,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:36:19,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-10-28 08:36:19,497 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 4 [2021-10-28 08:36:19,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:36:19,498 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-10-28 08:36:19,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2021-10-28 08:36:19,498 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2021-10-28 08:36:19,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-28 08:36:19,499 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:36:19,499 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-28 08:36:19,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 08:36:19,500 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-28 08:36:19,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:36:19,501 INFO L85 PathProgramCache]: Analyzing trace with hash 963339, now seen corresponding path program 1 times [2021-10-28 08:36:19,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:36:19,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369533192] [2021-10-28 08:36:19,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:36:19,502 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:36:19,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:36:19,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:36:19,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:36:19,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369533192] [2021-10-28 08:36:19,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369533192] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:36:19,525 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:36:19,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-28 08:36:19,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767027750] [2021-10-28 08:36:19,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:36:19,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:36:19,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:36:19,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:36:19,529 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2021-10-28 08:36:19,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:36:19,541 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2021-10-28 08:36:19,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:36:19,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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 [2021-10-28 08:36:19,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:36:19,543 INFO L225 Difference]: With dead ends: 10 [2021-10-28 08:36:19,543 INFO L226 Difference]: Without dead ends: 9 [2021-10-28 08:36:19,544 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:36:19,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-28 08:36:19,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-28 08:36:19,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 states have internal predecessors, (10), 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) [2021-10-28 08:36:19,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2021-10-28 08:36:19,547 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 4 [2021-10-28 08:36:19,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:36:19,547 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-10-28 08:36:19,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2021-10-28 08:36:19,548 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2021-10-28 08:36:19,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-28 08:36:19,548 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:36:19,548 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-28 08:36:19,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 08:36:19,549 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)] === [2021-10-28 08:36:19,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:36:19,550 INFO L85 PathProgramCache]: Analyzing trace with hash 29869514, now seen corresponding path program 1 times [2021-10-28 08:36:19,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:36:19,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662407710] [2021-10-28 08:36:19,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:36:19,551 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:36:19,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:36:19,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:36:19,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:36:19,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662407710] [2021-10-28 08:36:19,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662407710] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:36:19,617 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:36:19,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:36:19,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957159210] [2021-10-28 08:36:19,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:36:19,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:36:19,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:36:19,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:36:19,620 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-10-28 08:36:19,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:36:19,662 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2021-10-28 08:36:19,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:36:19,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2021-10-28 08:36:19,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:36:19,663 INFO L225 Difference]: With dead ends: 9 [2021-10-28 08:36:19,663 INFO L226 Difference]: Without dead ends: 8 [2021-10-28 08:36:19,664 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:36:19,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-28 08:36:19,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-28 08:36:19,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:36:19,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2021-10-28 08:36:19,666 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2021-10-28 08:36:19,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:36:19,667 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-10-28 08:36:19,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-10-28 08:36:19,667 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2021-10-28 08:36:19,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-28 08:36:19,668 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:36:19,668 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-28 08:36:19,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 08:36:19,669 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-28 08:36:19,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:36:19,670 INFO L85 PathProgramCache]: Analyzing trace with hash 29863556, now seen corresponding path program 1 times [2021-10-28 08:36:19,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:36:19,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373950987] [2021-10-28 08:36:19,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:36:19,671 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:36:19,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:36:19,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:36:19,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:36:19,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373950987] [2021-10-28 08:36:19,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373950987] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:36:19,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:36:19,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 08:36:19,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317540616] [2021-10-28 08:36:19,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:36:19,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:36:19,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:36:19,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:36:19,769 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-10-28 08:36:19,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:36:19,779 INFO L93 Difference]: Finished difference Result 8 states and 9 transitions. [2021-10-28 08:36:19,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:36:19,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-10-28 08:36:19,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:36:19,781 INFO L225 Difference]: With dead ends: 8 [2021-10-28 08:36:19,781 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 08:36:19,781 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:36:19,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 08:36:19,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 08:36:19,782 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) [2021-10-28 08:36:19,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 08:36:19,782 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2021-10-28 08:36:19,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:36:19,783 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 08:36:19,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-10-28 08:36:19,783 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 08:36:19,783 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 08:36:19,786 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-28 08:36:19,786 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-28 08:36:19,787 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-28 08:36:19,787 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-28 08:36:19,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 08:36:19,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 08:36:19,792 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:36:19,796 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:36:19,805 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2021-10-28 08:36:19,805 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 08:36:19,806 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2021-10-28 08:36:19,806 INFO L853 garLoopResultBuilder]: At program point L29(lines 17 30) the Hoare annotation is: (<= ULTIMATE.start_main_~y~0 2147483647) [2021-10-28 08:36:19,806 INFO L857 garLoopResultBuilder]: For program point L23(lines 23 27) no Hoare annotation was computed. [2021-10-28 08:36:19,807 INFO L853 garLoopResultBuilder]: At program point L23-2(lines 22 28) the Hoare annotation is: (and (<= ULTIMATE.start_main_~y~0 2147483647) (<= ULTIMATE.start_main_~x~0 2147483647)) [2021-10-28 08:36:19,807 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2021-10-28 08:36:19,807 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2021-10-28 08:36:19,807 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 08:36:19,807 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 08:36:19,808 INFO L857 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2021-10-28 08:36:19,808 INFO L857 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2021-10-28 08:36:19,808 INFO L857 garLoopResultBuilder]: For program point L24(line 24) no Hoare annotation was computed. [2021-10-28 08:36:19,808 INFO L857 garLoopResultBuilder]: For program point L24-1(line 24) no Hoare annotation was computed. [2021-10-28 08:36:19,808 INFO L857 garLoopResultBuilder]: For program point L22-2(lines 22 28) no Hoare annotation was computed. [2021-10-28 08:36:19,812 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-10-28 08:36:19,813 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 08:36:19,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:36:19 BoogieIcfgContainer [2021-10-28 08:36:19,826 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 08:36:19,827 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:36:19,827 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:36:19,827 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:36:19,828 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:36:19" (3/4) ... [2021-10-28 08:36:19,831 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 08:36:19,841 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-28 08:36:19,841 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-28 08:36:19,888 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76409d58-13ee-4ee7-9abc-c4186d0ea75d/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 08:36:19,888 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:36:19,890 INFO L168 Benchmark]: Toolchain (without parser) took 1434.65 ms. Allocated memory was 90.2 MB in the beginning and 134.2 MB in the end (delta: 44.0 MB). Free memory was 54.5 MB in the beginning and 104.5 MB in the end (delta: -50.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:36:19,890 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 90.2 MB. Free memory is still 70.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:36:19,891 INFO L168 Benchmark]: CACSL2BoogieTranslator took 230.69 ms. Allocated memory was 90.2 MB in the beginning and 134.2 MB in the end (delta: 44.0 MB). Free memory was 54.2 MB in the beginning and 111.4 MB in the end (delta: -57.2 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2021-10-28 08:36:19,891 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.31 ms. Allocated memory is still 134.2 MB. Free memory was 111.4 MB in the beginning and 110.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:36:19,892 INFO L168 Benchmark]: Boogie Preprocessor took 22.69 ms. Allocated memory is still 134.2 MB. Free memory was 110.2 MB in the beginning and 109.3 MB in the end (delta: 881.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:36:19,892 INFO L168 Benchmark]: RCFGBuilder took 287.13 ms. Allocated memory is still 134.2 MB. Free memory was 109.3 MB in the beginning and 101.0 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 08:36:19,893 INFO L168 Benchmark]: TraceAbstraction took 793.45 ms. Allocated memory is still 134.2 MB. Free memory was 100.5 MB in the beginning and 106.7 MB in the end (delta: -6.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:36:19,902 INFO L168 Benchmark]: Witness Printer took 61.30 ms. Allocated memory is still 134.2 MB. Free memory was 106.7 MB in the beginning and 104.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:36:19,907 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 90.2 MB. Free memory is still 70.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 230.69 ms. Allocated memory was 90.2 MB in the beginning and 134.2 MB in the end (delta: 44.0 MB). Free memory was 54.2 MB in the beginning and 111.4 MB in the end (delta: -57.2 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.31 ms. Allocated memory is still 134.2 MB. Free memory was 111.4 MB in the beginning and 110.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.69 ms. Allocated memory is still 134.2 MB. Free memory was 110.2 MB in the beginning and 109.3 MB in the end (delta: 881.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 287.13 ms. Allocated memory is still 134.2 MB. Free memory was 109.3 MB in the beginning and 101.0 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 793.45 ms. Allocated memory is still 134.2 MB. Free memory was 100.5 MB in the beginning and 106.7 MB in the end (delta: -6.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 61.30 ms. Allocated memory is still 134.2 MB. Free memory was 106.7 MB in the beginning and 104.5 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: 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, 15 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 22 SDslu, 2 SDs, 0 SdLazy, 30 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 10 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 42 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 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: 22]: Loop Invariant Derived loop invariant: y <= 2147483647 && x <= 2147483647 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: y <= 2147483647 RESULT: Ultimate proved your program to be correct! [2021-10-28 08:36:19,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76409d58-13ee-4ee7-9abc-c4186d0ea75d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...