./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a617dc8-5231-4594-8d3a-83cc7193c610/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a617dc8-5231-4594-8d3a-83cc7193c610/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a617dc8-5231-4594-8d3a-83cc7193c610/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a617dc8-5231-4594-8d3a-83cc7193c610/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a617dc8-5231-4594-8d3a-83cc7193c610/bin/utaipan-6cKwYrpEi9/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a617dc8-5231-4594-8d3a-83cc7193c610/bin/utaipan-6cKwYrpEi9 --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9c55a9a6f50b70c8ad02d8f9cdba1133727e3a9a73c5b8d3940178ed4735e2c1 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 21:13:38,518 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 21:13:38,521 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 21:13:38,569 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 21:13:38,570 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 21:13:38,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 21:13:38,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 21:13:38,581 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 21:13:38,584 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 21:13:38,587 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 21:13:38,590 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 21:13:38,592 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 21:13:38,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 21:13:38,599 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 21:13:38,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 21:13:38,603 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 21:13:38,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 21:13:38,609 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 21:13:38,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 21:13:38,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 21:13:38,617 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 21:13:38,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 21:13:38,622 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 21:13:38,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 21:13:38,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 21:13:38,635 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 21:13:38,635 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 21:13:38,636 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 21:13:38,638 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 21:13:38,639 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 21:13:38,641 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 21:13:38,642 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 21:13:38,644 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 21:13:38,645 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 21:13:38,649 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 21:13:38,650 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 21:13:38,651 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 21:13:38,651 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 21:13:38,651 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 21:13:38,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 21:13:38,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 21:13:38,656 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a617dc8-5231-4594-8d3a-83cc7193c610/bin/utaipan-6cKwYrpEi9/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-20 21:13:38,694 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 21:13:38,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 21:13:38,695 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 21:13:38,695 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 21:13:38,696 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 21:13:38,696 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 21:13:38,697 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 21:13:38,697 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 21:13:38,697 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 21:13:38,697 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 21:13:38,723 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 21:13:38,723 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 21:13:38,724 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 21:13:38,724 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 21:13:38,724 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 21:13:38,725 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 21:13:38,725 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 21:13:38,725 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 21:13:38,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 21:13:38,727 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 21:13:38,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 21:13:38,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 21:13:38,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 21:13:38,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 21:13:38,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 21:13:38,728 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 21:13:38,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 21:13:38,730 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 21:13:38,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 21:13:38,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 21:13:38,731 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 21:13:38,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:13:38,732 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 21:13:38,732 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 21:13:38,732 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 21:13:38,732 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 21:13:38,733 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 21:13:38,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 21:13:38,733 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 21:13:38,734 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 21:13:38,735 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_0a617dc8-5231-4594-8d3a-83cc7193c610/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a617dc8-5231-4594-8d3a-83cc7193c610/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c55a9a6f50b70c8ad02d8f9cdba1133727e3a9a73c5b8d3940178ed4735e2c1 [2022-11-20 21:13:39,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 21:13:39,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 21:13:39,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 21:13:39,086 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 21:13:39,087 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 21:13:39,088 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a617dc8-5231-4594-8d3a-83cc7193c610/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2.c [2022-11-20 21:13:42,565 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 21:13:42,766 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 21:13:42,767 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a617dc8-5231-4594-8d3a-83cc7193c610/sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2.c [2022-11-20 21:13:42,775 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a617dc8-5231-4594-8d3a-83cc7193c610/bin/utaipan-6cKwYrpEi9/data/dc0b902f2/130b951696e14f2da470cbd89158e1f8/FLAG4f4b4b99b [2022-11-20 21:13:42,792 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a617dc8-5231-4594-8d3a-83cc7193c610/bin/utaipan-6cKwYrpEi9/data/dc0b902f2/130b951696e14f2da470cbd89158e1f8 [2022-11-20 21:13:42,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 21:13:42,797 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 21:13:42,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 21:13:42,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 21:13:42,803 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 21:13:42,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:13:42" (1/1) ... [2022-11-20 21:13:42,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4094895f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:13:42, skipping insertion in model container [2022-11-20 21:13:42,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:13:42" (1/1) ... [2022-11-20 21:13:42,815 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 21:13:42,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 21:13:43,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:13:43,021 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 21:13:43,035 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:13:43,046 INFO L208 MainTranslator]: Completed translation [2022-11-20 21:13:43,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:13:43 WrapperNode [2022-11-20 21:13:43,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 21:13:43,048 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 21:13:43,048 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 21:13:43,048 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 21:13:43,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:13:43" (1/1) ... [2022-11-20 21:13:43,063 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:13:43" (1/1) ... [2022-11-20 21:13:43,084 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2022-11-20 21:13:43,085 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 21:13:43,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 21:13:43,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 21:13:43,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 21:13:43,097 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:13:43" (1/1) ... [2022-11-20 21:13:43,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:13:43" (1/1) ... [2022-11-20 21:13:43,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:13:43" (1/1) ... [2022-11-20 21:13:43,099 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:13:43" (1/1) ... [2022-11-20 21:13:43,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:13:43" (1/1) ... [2022-11-20 21:13:43,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:13:43" (1/1) ... [2022-11-20 21:13:43,107 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:13:43" (1/1) ... [2022-11-20 21:13:43,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:13:43" (1/1) ... [2022-11-20 21:13:43,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 21:13:43,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 21:13:43,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 21:13:43,112 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 21:13:43,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:13:43" (1/1) ... [2022-11-20 21:13:43,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:13:43,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a617dc8-5231-4594-8d3a-83cc7193c610/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:13:43,150 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a617dc8-5231-4594-8d3a-83cc7193c610/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 21:13:43,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a617dc8-5231-4594-8d3a-83cc7193c610/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 21:13:43,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 21:13:43,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 21:13:43,303 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 21:13:43,305 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 21:13:43,465 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 21:13:43,508 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 21:13:43,511 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 21:13:43,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:13:43 BoogieIcfgContainer [2022-11-20 21:13:43,514 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 21:13:43,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 21:13:43,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 21:13:43,521 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 21:13:43,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:13:42" (1/3) ... [2022-11-20 21:13:43,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70216237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:13:43, skipping insertion in model container [2022-11-20 21:13:43,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:13:43" (2/3) ... [2022-11-20 21:13:43,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70216237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:13:43, skipping insertion in model container [2022-11-20 21:13:43,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:13:43" (3/3) ... [2022-11-20 21:13:43,525 INFO L112 eAbstractionObserver]: Analyzing ICFG Urban-WST2013-Fig2.c [2022-11-20 21:13:43,548 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 21:13:43,548 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-20 21:13:43,606 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 21:13:43,614 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@419acc12, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 21:13:43,614 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-20 21:13:43,619 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 11 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) [2022-11-20 21:13:43,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 21:13:43,626 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:13:43,627 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 21:13:43,628 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-20 21:13:43,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:13:43,634 INFO L85 PathProgramCache]: Analyzing trace with hash 2126373, now seen corresponding path program 1 times [2022-11-20 21:13:43,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:13:43,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639998342] [2022-11-20 21:13:43,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:13:43,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:13:43,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:13:43,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:13:43,862 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:13:43,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639998342] [2022-11-20 21:13:43,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639998342] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:13:43,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:13:43,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 21:13:43,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829872195] [2022-11-20 21:13:43,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:13:43,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:13:43,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:13:43,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:13:43,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:13:43,922 INFO L87 Difference]: Start difference. First operand has 12 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 11 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) Second operand has 3 states, 2 states have (on average 2.0) 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) [2022-11-20 21:13:43,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:13:43,961 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-11-20 21:13:43,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:13:43,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) 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 [2022-11-20 21:13:43,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:13:43,975 INFO L225 Difference]: With dead ends: 14 [2022-11-20 21:13:43,975 INFO L226 Difference]: Without dead ends: 11 [2022-11-20 21:13:43,979 INFO L412 NwaCegarLoop]: 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 [2022-11-20 21:13:43,983 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:13:43,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 21:13:44,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-20 21:13:44,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2022-11-20 21:13:44,022 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) [2022-11-20 21:13:44,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2022-11-20 21:13:44,024 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 4 [2022-11-20 21:13:44,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:13:44,025 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2022-11-20 21:13:44,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) 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) [2022-11-20 21:13:44,026 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2022-11-20 21:13:44,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 21:13:44,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:13:44,027 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 21:13:44,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 21:13:44,028 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-20 21:13:44,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:13:44,029 INFO L85 PathProgramCache]: Analyzing trace with hash 2127124, now seen corresponding path program 1 times [2022-11-20 21:13:44,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:13:44,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352525590] [2022-11-20 21:13:44,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:13:44,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:13:44,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:13:44,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:13:44,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:13:44,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352525590] [2022-11-20 21:13:44,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352525590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:13:44,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:13:44,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:13:44,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739511311] [2022-11-20 21:13:44,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:13:44,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:13:44,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:13:44,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:13:44,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:13:44,065 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 3 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) [2022-11-20 21:13:44,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:13:44,090 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2022-11-20 21:13:44,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:13:44,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 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 [2022-11-20 21:13:44,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:13:44,092 INFO L225 Difference]: With dead ends: 22 [2022-11-20 21:13:44,092 INFO L226 Difference]: Without dead ends: 13 [2022-11-20 21:13:44,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:13:44,094 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:13:44,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 10 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 21:13:44,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-11-20 21:13:44,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-11-20 21:13:44,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 10 states have (on average 1.4) internal successors, (14), 12 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) [2022-11-20 21:13:44,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2022-11-20 21:13:44,100 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 4 [2022-11-20 21:13:44,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:13:44,101 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2022-11-20 21:13:44,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2022-11-20 21:13:44,101 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2022-11-20 21:13:44,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 21:13:44,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:13:44,102 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:13:44,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 21:13:44,103 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-20 21:13:44,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:13:44,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1077677150, now seen corresponding path program 1 times [2022-11-20 21:13:44,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:13:44,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310549823] [2022-11-20 21:13:44,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:13:44,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:13:44,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:13:44,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:13:44,164 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:13:44,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310549823] [2022-11-20 21:13:44,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310549823] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:13:44,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415523155] [2022-11-20 21:13:44,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:13:44,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:13:44,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a617dc8-5231-4594-8d3a-83cc7193c610/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:13:44,170 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a617dc8-5231-4594-8d3a-83cc7193c610/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:13:44,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a617dc8-5231-4594-8d3a-83cc7193c610/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 21:13:44,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:13:44,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 21:13:44,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:13:44,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 21:13:44,318 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:13:44,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415523155] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:13:44,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 21:13:44,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-20 21:13:44,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834885543] [2022-11-20 21:13:44,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:13:44,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:13:44,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:13:44,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:13:44,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 21:13:44,322 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-20 21:13:44,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:13:44,337 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2022-11-20 21:13:44,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:13:44,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2022-11-20 21:13:44,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:13:44,338 INFO L225 Difference]: With dead ends: 13 [2022-11-20 21:13:44,338 INFO L226 Difference]: Without dead ends: 12 [2022-11-20 21:13:44,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 21:13:44,341 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:13:44,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 5 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 21:13:44,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-20 21:13:44,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-11-20 21:13:44,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.3) internal successors, (13), 11 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) [2022-11-20 21:13:44,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2022-11-20 21:13:44,347 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 7 [2022-11-20 21:13:44,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:13:44,347 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2022-11-20 21:13:44,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-20 21:13:44,348 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2022-11-20 21:13:44,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 21:13:44,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:13:44,349 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2022-11-20 21:13:44,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a617dc8-5231-4594-8d3a-83cc7193c610/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 21:13:44,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a617dc8-5231-4594-8d3a-83cc7193c610/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:13:44,556 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-20 21:13:44,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:13:44,557 INFO L85 PathProgramCache]: Analyzing trace with hash 951723491, now seen corresponding path program 1 times [2022-11-20 21:13:44,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:13:44,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514561975] [2022-11-20 21:13:44,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:13:44,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:13:44,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:13:44,649 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 21:13:44,649 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:13:44,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514561975] [2022-11-20 21:13:44,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514561975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:13:44,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:13:44,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 21:13:44,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938898463] [2022-11-20 21:13:44,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:13:44,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:13:44,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:13:44,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:13:44,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:13:44,653 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2022-11-20 21:13:44,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:13:44,695 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2022-11-20 21:13:44,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:13:44,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 [2022-11-20 21:13:44,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:13:44,712 INFO L225 Difference]: With dead ends: 12 [2022-11-20 21:13:44,712 INFO L226 Difference]: Without dead ends: 11 [2022-11-20 21:13:44,713 INFO L412 NwaCegarLoop]: 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 [2022-11-20 21:13:44,715 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:13:44,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 21:13:44,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-20 21:13:44,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-20 21:13:44,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) 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) [2022-11-20 21:13:44,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2022-11-20 21:13:44,750 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 8 [2022-11-20 21:13:44,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:13:44,750 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2022-11-20 21:13:44,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2022-11-20 21:13:44,751 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2022-11-20 21:13:44,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 21:13:44,751 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:13:44,751 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:13:44,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 21:13:44,752 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-20 21:13:44,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:13:44,753 INFO L85 PathProgramCache]: Analyzing trace with hash 951746779, now seen corresponding path program 1 times [2022-11-20 21:13:44,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:13:44,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040059935] [2022-11-20 21:13:44,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:13:44,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:13:44,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:13:44,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:13:44,875 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:13:44,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040059935] [2022-11-20 21:13:44,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040059935] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:13:44,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567463557] [2022-11-20 21:13:44,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:13:44,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:13:44,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a617dc8-5231-4594-8d3a-83cc7193c610/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:13:44,878 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a617dc8-5231-4594-8d3a-83cc7193c610/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:13:44,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a617dc8-5231-4594-8d3a-83cc7193c610/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 21:13:44,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:13:44,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 21:13:44,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:13:44,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 21:13:44,964 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:13:44,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567463557] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:13:44,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 21:13:44,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2022-11-20 21:13:44,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543527646] [2022-11-20 21:13:44,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:13:44,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:13:44,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:13:44,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:13:44,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 21:13:44,969 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2022-11-20 21:13:44,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:13:44,982 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2022-11-20 21:13:44,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:13:44,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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 [2022-11-20 21:13:44,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:13:44,984 INFO L225 Difference]: With dead ends: 9 [2022-11-20 21:13:44,984 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 21:13:44,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 21:13:44,986 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:13:44,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 21:13:44,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 21:13:44,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 21:13:44,989 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) [2022-11-20 21:13:44,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 21:13:44,990 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2022-11-20 21:13:44,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:13:44,990 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 21:13:44,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2022-11-20 21:13:44,991 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 21:13:44,991 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 21:13:44,994 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-11-20 21:13:44,995 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-11-20 21:13:44,996 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2022-11-20 21:13:44,996 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2022-11-20 21:13:45,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a617dc8-5231-4594-8d3a-83cc7193c610/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 21:13:45,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a617dc8-5231-4594-8d3a-83cc7193c610/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:13:45,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 21:13:45,286 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2022-11-20 21:13:45,288 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 21:13:45,294 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2022-11-20 21:13:45,294 INFO L895 garLoopResultBuilder]: At program point L21-2(lines 21 23) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~x1~0#1| 10) (<= |ULTIMATE.start_main_~x2~0#1| 10) (<= 0 (+ |ULTIMATE.start_main_~x1~0#1| 2147483648))) [2022-11-20 21:13:45,295 INFO L899 garLoopResultBuilder]: For program point L21-3(lines 21 23) no Hoare annotation was computed. [2022-11-20 21:13:45,295 INFO L895 garLoopResultBuilder]: At program point L19-2(lines 19 25) the Hoare annotation is: (<= 0 (+ |ULTIMATE.start_main_~x1~0#1| 2147483648)) [2022-11-20 21:13:45,296 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2022-11-20 21:13:45,296 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2022-11-20 21:13:45,296 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-20 21:13:45,297 INFO L899 garLoopResultBuilder]: For program point L24(line 24) no Hoare annotation was computed. [2022-11-20 21:13:45,297 INFO L899 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2022-11-20 21:13:45,297 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2022-11-20 21:13:45,301 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-20 21:13:45,304 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 21:13:45,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 09:13:45 BoogieIcfgContainer [2022-11-20 21:13:45,321 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 21:13:45,321 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 21:13:45,321 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 21:13:45,322 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 21:13:45,322 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:13:43" (3/4) ... [2022-11-20 21:13:45,326 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 21:13:45,336 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-11-20 21:13:45,337 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-20 21:13:45,337 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 21:13:45,385 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a617dc8-5231-4594-8d3a-83cc7193c610/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 21:13:45,385 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 21:13:45,386 INFO L158 Benchmark]: Toolchain (without parser) took 2588.65ms. Allocated memory was 167.8MB in the beginning and 222.3MB in the end (delta: 54.5MB). Free memory was 123.3MB in the beginning and 179.9MB in the end (delta: -56.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 21:13:45,386 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 167.8MB. Free memory was 137.4MB in the beginning and 137.3MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 21:13:45,387 INFO L158 Benchmark]: CACSL2BoogieTranslator took 248.56ms. Allocated memory is still 167.8MB. Free memory was 122.7MB in the beginning and 113.7MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-20 21:13:45,387 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.91ms. Allocated memory is still 167.8MB. Free memory was 113.7MB in the beginning and 112.8MB in the end (delta: 910.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 21:13:45,388 INFO L158 Benchmark]: Boogie Preprocessor took 24.76ms. Allocated memory is still 167.8MB. Free memory was 112.2MB in the beginning and 111.6MB in the end (delta: 591.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 21:13:45,388 INFO L158 Benchmark]: RCFGBuilder took 402.98ms. Allocated memory is still 167.8MB. Free memory was 111.6MB in the beginning and 101.7MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 21:13:45,389 INFO L158 Benchmark]: TraceAbstraction took 1803.85ms. Allocated memory was 167.8MB in the beginning and 222.3MB in the end (delta: 54.5MB). Free memory was 101.1MB in the beginning and 182.1MB in the end (delta: -81.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 21:13:45,390 INFO L158 Benchmark]: Witness Printer took 63.64ms. Allocated memory is still 222.3MB. Free memory was 182.1MB in the beginning and 179.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 21:13:45,393 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 167.8MB. Free memory was 137.4MB in the beginning and 137.3MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 248.56ms. Allocated memory is still 167.8MB. Free memory was 122.7MB in the beginning and 113.7MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.91ms. Allocated memory is still 167.8MB. Free memory was 113.7MB in the beginning and 112.8MB in the end (delta: 910.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.76ms. Allocated memory is still 167.8MB. Free memory was 112.2MB in the beginning and 111.6MB in the end (delta: 591.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 402.98ms. Allocated memory is still 167.8MB. Free memory was 111.6MB in the beginning and 101.7MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1803.85ms. Allocated memory was 167.8MB in the beginning and 222.3MB in the end (delta: 54.5MB). Free memory was 101.1MB in the beginning and 182.1MB in the end (delta: -81.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 63.64ms. Allocated memory is still 222.3MB. Free memory was 182.1MB in the beginning and 179.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 1.7s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 41 IncrementalHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 24 mSDtfsCounter, 41 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=2, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 17 HoareAnnotationTreeSize, 2 FomulaSimplifications, 3 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 16 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 103 SizeOfPredicates, 0 NumberOfNonLiveVariables, 33 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 5/7 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: 19]: Loop Invariant Derived loop invariant: 0 <= x1 + 2147483648 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: (x1 <= 10 && x2 <= 10) && 0 <= x1 + 2147483648 RESULT: Ultimate proved your program to be correct! [2022-11-20 21:13:45,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a617dc8-5231-4594-8d3a-83cc7193c610/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE