./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 35aee247a9d57b19731affe394846ba9ce20d46b03fd5dbce1e446f98386181b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:31:50,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:31:50,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:31:51,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:31:51,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:31:51,012 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:31:51,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:31:51,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:31:51,021 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:31:51,029 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:31:51,030 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:31:51,032 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:31:51,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:31:51,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:31:51,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:31:51,046 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:31:51,048 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:31:51,049 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:31:51,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:31:51,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:31:51,063 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:31:51,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:31:51,068 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:31:51,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:31:51,073 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:31:51,074 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:31:51,074 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:31:51,076 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:31:51,077 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:31:51,079 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:31:51,080 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:31:51,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:31:51,083 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:31:51,084 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:31:51,086 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:31:51,086 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:31:51,087 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:31:51,087 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:31:51,088 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:31:51,089 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:31:51,089 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:31:51,090 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:31:51,142 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:31:51,142 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:31:51,143 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:31:51,143 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:31:51,144 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:31:51,144 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:31:51,144 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:31:51,144 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:31:51,144 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:31:51,145 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:31:51,145 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:31:51,145 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:31:51,145 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:31:51,145 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:31:51,151 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:31:51,152 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:31:51,152 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:31:51,152 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:31:51,153 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:31:51,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:31:51,153 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:31:51,153 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:31:51,153 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:31:51,154 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:31:51,154 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:31:51,154 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:31:51,155 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:31:51,155 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:31:51,156 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:31:51,157 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:31:51,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:31:51,158 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:31:51,158 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:31:51,159 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:31:51,159 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:31:51,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:31:51,160 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:31:51,160 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:31:51,160 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:31:51,161 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_ea784c42-232f-4f49-8da4-023b1361e045/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 35aee247a9d57b19731affe394846ba9ce20d46b03fd5dbce1e446f98386181b [2021-11-07 01:31:51,473 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:31:51,509 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:31:51,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:31:51,513 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:31:51,514 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:31:51,515 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound1.c [2021-11-07 01:31:51,633 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/bin/utaipan-UUZaoUuFF8/data/5f9b9c730/a062a19d045641ceb3da4705712cacd4/FLAGfe224156e [2021-11-07 01:31:52,152 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:31:52,153 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound1.c [2021-11-07 01:31:52,159 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/bin/utaipan-UUZaoUuFF8/data/5f9b9c730/a062a19d045641ceb3da4705712cacd4/FLAGfe224156e [2021-11-07 01:31:52,543 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/bin/utaipan-UUZaoUuFF8/data/5f9b9c730/a062a19d045641ceb3da4705712cacd4 [2021-11-07 01:31:52,545 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:31:52,548 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:31:52,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:31:52,551 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:31:52,558 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:31:52,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:31:52" (1/1) ... [2021-11-07 01:31:52,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d5203dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:52, skipping insertion in model container [2021-11-07 01:31:52,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:31:52" (1/1) ... [2021-11-07 01:31:52,567 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:31:52,582 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:31:52,743 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound1.c[576,589] [2021-11-07 01:31:52,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:31:52,772 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:31:52,784 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound1.c[576,589] [2021-11-07 01:31:52,792 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:31:52,803 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:31:52,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:52 WrapperNode [2021-11-07 01:31:52,804 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:31:52,805 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:31:52,805 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:31:52,805 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:31:52,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:52" (1/1) ... [2021-11-07 01:31:52,823 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:52" (1/1) ... [2021-11-07 01:31:52,852 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:31:52,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:31:52,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:31:52,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:31:52,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:52" (1/1) ... [2021-11-07 01:31:52,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:52" (1/1) ... [2021-11-07 01:31:52,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:52" (1/1) ... [2021-11-07 01:31:52,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:52" (1/1) ... [2021-11-07 01:31:52,872 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:52" (1/1) ... [2021-11-07 01:31:52,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:52" (1/1) ... [2021-11-07 01:31:52,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:52" (1/1) ... [2021-11-07 01:31:52,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:31:52,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:31:52,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:31:52,905 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:31:52,906 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:52" (1/1) ... [2021-11-07 01:31:52,912 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:31:52,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:31:52,948 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:31:52,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:31:52,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 01:31:52,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:31:52,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:31:52,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:31:53,408 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:31:53,411 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-11-07 01:31:53,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:31:53 BoogieIcfgContainer [2021-11-07 01:31:53,414 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:31:53,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:31:53,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:31:53,434 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:31:53,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:31:52" (1/3) ... [2021-11-07 01:31:53,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e32d0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:31:53, skipping insertion in model container [2021-11-07 01:31:53,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:31:52" (2/3) ... [2021-11-07 01:31:53,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e32d0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:31:53, skipping insertion in model container [2021-11-07 01:31:53,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:31:53" (3/3) ... [2021-11-07 01:31:53,438 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound1.c [2021-11-07 01:31:53,442 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:31:53,443 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-07 01:31:53,499 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:31:53,509 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 [2021-11-07 01:31:53,509 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-07 01:31:53,531 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 33 states have internal predecessors, (44), 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) [2021-11-07 01:31:53,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-07 01:31:53,552 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:31:53,552 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-07 01:31:53,553 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 01:31:53,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:31:53,560 INFO L85 PathProgramCache]: Analyzing trace with hash 5453836, now seen corresponding path program 1 times [2021-11-07 01:31:53,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:31:53,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475097921] [2021-11-07 01:31:53,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:31:53,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:31:53,711 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 01:31:53,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [349275032] [2021-11-07 01:31:53,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:31:53,713 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:31:53,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:31:53,718 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:31:53,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 01:31:53,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:31:53,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 01:31:53,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:54,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:31:54,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:54,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:31:54,052 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:31:54,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475097921] [2021-11-07 01:31:54,052 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:31:54,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349275032] [2021-11-07 01:31:54,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349275032] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:31:54,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:31:54,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:31:54,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673709456] [2021-11-07 01:31:54,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:31:54,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:31:54,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:31:54,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:31:54,077 INFO L87 Difference]: Start difference. First operand has 34 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 33 states have internal predecessors, (44), 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 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:31:54,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:31:54,186 INFO L93 Difference]: Finished difference Result 75 states and 100 transitions. [2021-11-07 01:31:54,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:31:54,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-11-07 01:31:54,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:31:54,196 INFO L225 Difference]: With dead ends: 75 [2021-11-07 01:31:54,197 INFO L226 Difference]: Without dead ends: 38 [2021-11-07 01:31:54,199 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:31:54,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-07 01:31:54,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 26. [2021-11-07 01:31:54,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 25 states have internal predecessors, (27), 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) [2021-11-07 01:31:54,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2021-11-07 01:31:54,227 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 4 [2021-11-07 01:31:54,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:31:54,228 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2021-11-07 01:31:54,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:31:54,228 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2021-11-07 01:31:54,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 01:31:54,229 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:31:54,229 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 01:31:54,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-07 01:31:54,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:31:54,438 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 01:31:54,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:31:54,441 INFO L85 PathProgramCache]: Analyzing trace with hash 946325295, now seen corresponding path program 1 times [2021-11-07 01:31:54,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:31:54,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276559312] [2021-11-07 01:31:54,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:31:54,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:31:54,478 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 01:31:54,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [490005856] [2021-11-07 01:31:54,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:31:54,479 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:31:54,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:31:54,484 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:31:54,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 01:31:54,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:31:54,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 01:31:54,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:54,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:31:54,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:54,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:31:54,760 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:31:54,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276559312] [2021-11-07 01:31:54,761 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:31:54,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490005856] [2021-11-07 01:31:54,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490005856] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:31:54,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:31:54,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:31:54,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268539841] [2021-11-07 01:31:54,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:31:54,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:31:54,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:31:54,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:31:54,773 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 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) [2021-11-07 01:31:54,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:31:54,902 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2021-11-07 01:31:54,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:31:54,903 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 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) Word has length 6 [2021-11-07 01:31:54,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:31:54,906 INFO L225 Difference]: With dead ends: 52 [2021-11-07 01:31:54,906 INFO L226 Difference]: Without dead ends: 44 [2021-11-07 01:31:54,912 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:31:54,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-11-07 01:31:54,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2021-11-07 01:31:54,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 39 states have internal predecessors, (43), 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) [2021-11-07 01:31:54,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2021-11-07 01:31:54,926 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 6 [2021-11-07 01:31:54,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:31:54,927 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2021-11-07 01:31:54,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 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) [2021-11-07 01:31:54,927 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2021-11-07 01:31:54,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 01:31:54,928 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:31:54,928 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:31:54,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:31:55,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:31:55,130 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 01:31:55,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:31:55,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1120146711, now seen corresponding path program 1 times [2021-11-07 01:31:55,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:31:55,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299049848] [2021-11-07 01:31:55,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:31:55,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:31:55,148 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 01:31:55,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2125727368] [2021-11-07 01:31:55,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:31:55,148 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:31:55,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:31:55,150 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:31:55,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 01:31:55,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:31:55,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:31:55,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:55,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:31:55,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:55,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:31:55,333 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:31:55,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299049848] [2021-11-07 01:31:55,333 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:31:55,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125727368] [2021-11-07 01:31:55,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125727368] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:31:55,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:31:55,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:31:55,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505066955] [2021-11-07 01:31:55,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:31:55,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:31:55,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:31:55,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:31:55,338 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:31:55,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:31:55,410 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2021-11-07 01:31:55,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:31:55,410 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 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) Word has length 13 [2021-11-07 01:31:55,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:31:55,413 INFO L225 Difference]: With dead ends: 44 [2021-11-07 01:31:55,413 INFO L226 Difference]: Without dead ends: 42 [2021-11-07 01:31:55,414 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:31:55,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-11-07 01:31:55,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2021-11-07 01:31:55,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 39 states have internal predecessors, (42), 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) [2021-11-07 01:31:55,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2021-11-07 01:31:55,433 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 13 [2021-11-07 01:31:55,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:31:55,433 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2021-11-07 01:31:55,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:31:55,435 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2021-11-07 01:31:55,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-07 01:31:55,437 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:31:55,437 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:31:55,466 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-07 01:31:55,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:31:55,650 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 01:31:55,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:31:55,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1053678152, now seen corresponding path program 1 times [2021-11-07 01:31:55,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:31:55,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949676624] [2021-11-07 01:31:55,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:31:55,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:31:55,667 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 01:31:55,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [663717652] [2021-11-07 01:31:55,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:31:55,667 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:31:55,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:31:55,668 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:31:55,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 01:31:55,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:31:55,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-07 01:31:55,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:56,383 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:31:56,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:56,728 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:31:56,729 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:31:56,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949676624] [2021-11-07 01:31:56,729 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:31:56,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663717652] [2021-11-07 01:31:56,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663717652] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:31:56,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1512957361] [2021-11-07 01:31:56,763 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2021-11-07 01:31:56,763 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:31:56,768 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:31:56,773 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:31:56,774 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:31:56,821 INFO L180 QuantifierPusher]: treesize reduction 16, result has 91.1 percent of original size [2021-11-07 01:31:56,823 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:31:56,825 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:31:56,826 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:31:56,827 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:31:56,828 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:31:56,829 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:31:56,834 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 166 [2021-11-07 01:31:56,862 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_13|], 21=[|v_#valid_14|]} [2021-11-07 01:31:56,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:31:56,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:31:56,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:31:56,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 01:31:56,900 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:31:56,901 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:31:56,906 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:31:56,907 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:31:56,911 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:31:56,925 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 01:31:56,926 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:31:56,926 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:31:56,927 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:31:56,927 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:31:56,927 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:31:56,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,004 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:31:57,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:31:57,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:31:57,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:31:57,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:31:57,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:31:57,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:31:57,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:31:57,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:31:57,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:31:57,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-07 01:31:57,040 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:31:57,045 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:31:57,046 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:31:57,047 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:31:57,047 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-07 01:31:57,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,067 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:31:57,071 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.7 percent of original size [2021-11-07 01:31:57,073 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-07 01:31:57,074 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:31:57,074 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:308, output treesize:125 [2021-11-07 01:31:57,091 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:31:57,105 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 157 [2021-11-07 01:31:57,118 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:31:57,127 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 159 [2021-11-07 01:31:57,137 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:31:57,145 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-11-07 01:31:57,159 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:31:57,172 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 167 [2021-11-07 01:31:57,181 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:31:57,191 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 159 [2021-11-07 01:31:57,197 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:31:57,204 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 166 [2021-11-07 01:31:57,211 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:31:57,221 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 166 [2021-11-07 01:31:57,226 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:31:57,233 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 170 [2021-11-07 01:31:57,238 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:31:57,243 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-11-07 01:31:57,249 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:31:57,256 INFO L185 QuantifierPusher]: treesize reduction 10, result has 94.4 percent of original size 170 [2021-11-07 01:31:57,269 INFO L180 QuantifierPusher]: treesize reduction 10, result has 95.3 percent of original size [2021-11-07 01:31:57,295 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 179 [2021-11-07 01:31:57,307 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:31:57,315 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 159 [2021-11-07 01:31:57,328 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:31:57,335 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 216 [2021-11-07 01:31:57,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,556 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:31:57,562 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 225 [2021-11-07 01:31:57,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,713 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.8 percent of original size [2021-11-07 01:31:57,720 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-11-07 01:31:57,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,778 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:31:57,781 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-11-07 01:31:57,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:31:57,929 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:31:57,930 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:31:57,934 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:31:57,943 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 195 [2021-11-07 01:31:57,960 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 228 [2021-11-07 01:31:57,966 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:32:00,144 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:32:00,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:32:00,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-11-07 01:32:00,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117994016] [2021-11-07 01:32:00,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 01:32:00,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:32:00,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 01:32:00,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2021-11-07 01:32:00,147 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 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) [2021-11-07 01:32:00,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:32:00,557 INFO L93 Difference]: Finished difference Result 78 states and 87 transitions. [2021-11-07 01:32:00,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 01:32:00,557 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-07 01:32:00,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:32:00,558 INFO L225 Difference]: With dead ends: 78 [2021-11-07 01:32:00,560 INFO L226 Difference]: Without dead ends: 43 [2021-11-07 01:32:00,561 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 27 SyntacticMatches, 8 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=208, Invalid=604, Unknown=0, NotChecked=0, Total=812 [2021-11-07 01:32:00,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-07 01:32:00,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2021-11-07 01:32:00,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 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) [2021-11-07 01:32:00,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-11-07 01:32:00,568 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 19 [2021-11-07 01:32:00,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:32:00,569 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-11-07 01:32:00,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 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) [2021-11-07 01:32:00,569 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-11-07 01:32:00,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-07 01:32:00,570 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:32:00,570 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:32:00,607 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-07 01:32:00,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:32:00,786 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 01:32:00,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:32:00,787 INFO L85 PathProgramCache]: Analyzing trace with hash 226573641, now seen corresponding path program 1 times [2021-11-07 01:32:00,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:32:00,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823088014] [2021-11-07 01:32:00,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:32:00,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:32:00,801 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 01:32:00,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1713311618] [2021-11-07 01:32:00,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:32:00,802 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:32:00,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:32:00,803 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:32:00,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 01:32:00,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:32:00,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:32:00,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:32:01,255 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:32:01,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:32:01,511 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:32:01,511 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:32:01,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823088014] [2021-11-07 01:32:01,512 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:32:01,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713311618] [2021-11-07 01:32:01,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713311618] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:32:01,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1628668262] [2021-11-07 01:32:01,517 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2021-11-07 01:32:01,517 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:32:01,518 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:32:01,518 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:32:01,518 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:32:01,551 INFO L180 QuantifierPusher]: treesize reduction 16, result has 91.1 percent of original size [2021-11-07 01:32:01,553 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:32:01,553 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:01,554 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:32:01,554 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:32:01,555 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:01,555 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:32:01,558 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 166 [2021-11-07 01:32:01,577 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_14|], 21=[|v_#valid_15|]} [2021-11-07 01:32:01,585 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 01:32:01,586 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:01,586 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:32:01,587 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:01,587 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:32:01,588 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:32:01,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:32:01,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:32:01,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:32:01,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 01:32:01,605 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:01,605 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:32:01,606 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:01,606 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:32:01,606 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:32:01,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:01,615 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:01,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:32:01,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:32:01,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:32:01,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:32:01,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:32:01,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:32:01,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:32:01,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:32:01,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:32:01,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-07 01:32:01,638 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:01,640 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:32:01,641 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:01,641 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:32:01,642 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-07 01:32:01,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:01,648 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:01,650 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.7 percent of original size [2021-11-07 01:32:01,652 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-07 01:32:01,653 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:32:01,653 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:308, output treesize:125 [2021-11-07 01:32:01,664 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:01,671 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 157 [2021-11-07 01:32:01,678 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:01,682 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 159 [2021-11-07 01:32:01,700 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:01,705 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-11-07 01:32:01,711 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:01,717 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 167 [2021-11-07 01:32:01,723 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:01,728 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 159 [2021-11-07 01:32:01,735 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:01,739 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 166 [2021-11-07 01:32:01,744 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:01,751 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 166 [2021-11-07 01:32:01,757 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:01,765 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 170 [2021-11-07 01:32:01,770 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:01,777 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 172 [2021-11-07 01:32:01,786 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:01,792 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-11-07 01:32:01,797 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:01,802 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 172 [2021-11-07 01:32:01,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:01,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:01,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:01,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:01,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:01,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:01,841 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:01,847 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 159 [2021-11-07 01:32:01,860 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:01,865 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 216 [2021-11-07 01:32:01,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:01,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:01,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:01,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:01,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:01,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:01,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:01,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:01,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:01,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:01,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:01,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:01,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:01,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:01,972 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:01,980 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 225 [2021-11-07 01:32:01,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:02,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:02,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:02,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:02,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:02,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:02,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:02,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:02,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:02,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:02,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:02,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:02,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:02,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:02,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:02,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:02,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:02,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:02,086 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.8 percent of original size [2021-11-07 01:32:02,090 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-11-07 01:32:02,095 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:02,100 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-11-07 01:32:02,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:02,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:02,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:02,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:02,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:02,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:02,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:02,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:02,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:02,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:02,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:02,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:02,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:02,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:02,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:02,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:02,215 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:02,220 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-11-07 01:32:02,229 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:02,230 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:32:02,235 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:02,241 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 195 [2021-11-07 01:32:02,257 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 228 [2021-11-07 01:32:02,261 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:32:04,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1628668262] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:32:04,565 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:32:04,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6, 6] total 18 [2021-11-07 01:32:04,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155904210] [2021-11-07 01:32:04,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:32:04,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:32:04,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:32:04,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2021-11-07 01:32:04,567 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 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) [2021-11-07 01:32:05,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:32:05,330 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-11-07 01:32:05,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:32:05,331 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 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 35 [2021-11-07 01:32:05,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:32:05,331 INFO L225 Difference]: With dead ends: 39 [2021-11-07 01:32:05,331 INFO L226 Difference]: Without dead ends: 0 [2021-11-07 01:32:05,331 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 71 SyntacticMatches, 15 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=152, Invalid=310, Unknown=0, NotChecked=0, Total=462 [2021-11-07 01:32:05,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-07 01:32:05,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-07 01:32:05,332 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) [2021-11-07 01:32:05,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-07 01:32:05,332 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2021-11-07 01:32:05,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:32:05,332 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 01:32:05,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 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) [2021-11-07 01:32:05,333 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-07 01:32:05,333 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-07 01:32:05,335 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:32:05,335 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:32:05,335 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:32:05,335 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:32:05,335 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:32:05,335 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:32:05,336 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:32:05,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:32:05,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2021-11-07 01:32:05,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-07 01:32:05,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:05,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:05,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:05,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:05,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:05,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:05,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:05,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:05,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:06,699 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-07 01:32:06,700 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-07 01:32:06,700 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-07 01:32:06,700 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-07 01:32:06,700 INFO L853 garLoopResultBuilder]: At program point L38-2(lines 38 62) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (.cse1 (<= ULTIMATE.start_main_~y~0 1))) (or (and (<= 0 |#t~string4.base|) (<= 1 ULTIMATE.start_assume_abort_if_not_~cond) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond| 1) (<= 0 |#t~string5.base|) (<= |#NULL.offset| 0) (<= 0 |#t~string5.offset|) (<= 1 ULTIMATE.start_main_~y~0) .cse0 (= ULTIMATE.start_main_~q~0 0) (<= 0 |#t~string6.base|) (<= 1 |ULTIMATE.start_assume_abort_if_not_#in~cond|) (<= ULTIMATE.start_main_~r~0 1) (= |#t~string6.offset| 0) (<= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= ULTIMATE.start_main_~a~0 0) (<= 0 |#NULL.offset|) (<= 0 ULTIMATE.start_main_~a~0) (<= 0 ULTIMATE.start_main_~x~0) (<= 0 |#StackHeapBarrier|) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) .cse1 (<= |#t~string5.offset| 0) (= 0 |#t~string4.offset|) (= |#NULL.base| 0)) (let ((.cse2 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~r~0))) (and (<= ULTIMATE.start_main_~y~0 .cse2) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~x~0 .cse2) (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~b~0) .cse0 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~q~0) (= ULTIMATE.start_main_~a~0 1) .cse1)))) [2021-11-07 01:32:06,700 INFO L857 garLoopResultBuilder]: For program point L38-3(lines 38 62) no Hoare annotation was computed. [2021-11-07 01:32:06,700 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-07 01:32:06,701 INFO L853 garLoopResultBuilder]: At program point L47-2(lines 47 59) the Hoare annotation is: (and (<= 0 |#t~string4.base|) (<= 1 ULTIMATE.start_assume_abort_if_not_~cond) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 1) (<= 0 |#t~string5.base|) (= |#t~string5.offset| 0) (<= ULTIMATE.start___VERIFIER_assert_~cond 1) (<= 1 ULTIMATE.start_main_~b~0) (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (= ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))) (<= 0 |#t~string6.base|) (= |#NULL.offset| 0) (<= ULTIMATE.start_main_~r~0 1) (<= 1 ULTIMATE.start_main_~x~0) (= |#t~string6.offset| 0) (<= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= 0 |#StackHeapBarrier|) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 1) (= 0 |#t~string4.offset|) (= |#NULL.base| 0)) [2021-11-07 01:32:06,701 INFO L857 garLoopResultBuilder]: For program point L47-3(lines 47 59) no Hoare annotation was computed. [2021-11-07 01:32:06,701 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-07 01:32:06,701 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-11-07 01:32:06,701 INFO L853 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (let ((.cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (.cse3 (<= ULTIMATE.start_main_~y~0 1))) (or (let ((.cse0 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~r~0))) (and (<= ULTIMATE.start_main_~y~0 .cse0) .cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~x~0 .cse0) (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~b~0) .cse2 (= ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~q~0 1) .cse3)) (and (<= 0 |#t~string4.base|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_assume_abort_if_not_~cond) .cse1 (= |ULTIMATE.start___VERIFIER_assert_#in~cond| 1) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond| 1) (<= 0 |#t~string5.base|) (<= 0 |#t~string5.offset|) (<= 0 ULTIMATE.start_main_~r~0) (<= 1 ULTIMATE.start_main_~y~0) .cse2 (= ULTIMATE.start_main_~q~0 0) (<= 0 |#t~string6.base|) (= |#NULL.offset| 0) (<= 1 |ULTIMATE.start_assume_abort_if_not_#in~cond|) (<= ULTIMATE.start_main_~r~0 1) (= |#t~string6.offset| 0) (<= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= ULTIMATE.start_main_~a~0 0) (<= 0 ULTIMATE.start_main_~a~0) (<= 0 |#StackHeapBarrier|) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) .cse3 (<= |#t~string5.offset| 0) (= 0 |#t~string4.offset|) (= |#NULL.base| 0)))) [2021-11-07 01:32:06,702 INFO L857 garLoopResultBuilder]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-11-07 01:32:06,702 INFO L853 garLoopResultBuilder]: At program point L15-5(lines 42 43) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (.cse2 (<= ULTIMATE.start_main_~y~0 1))) (or (let ((.cse0 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~r~0))) (and (<= ULTIMATE.start_main_~y~0 .cse0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~x~0 .cse0) (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~b~0) .cse1 (= ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~q~0 1) .cse2)) (and (<= 0 |#t~string4.base|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_assume_abort_if_not_~cond) (<= ULTIMATE.start_main_~x~0 1) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 1) (<= 0 |#t~string5.base|) (= |#t~string5.offset| 0) (<= 0 ULTIMATE.start_main_~r~0) (<= 1 ULTIMATE.start_main_~y~0) .cse1 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))) (<= 0 |#t~string6.base|) (= |#NULL.offset| 0) (= |#t~string6.offset| 0) (<= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= ULTIMATE.start_main_~a~0 0) (<= 0 ULTIMATE.start_main_~a~0) (<= 0 |#StackHeapBarrier|) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) .cse2 (= 0 |#t~string4.offset|) (= |#NULL.base| 0)))) [2021-11-07 01:32:06,702 INFO L857 garLoopResultBuilder]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2021-11-07 01:32:06,702 INFO L853 garLoopResultBuilder]: At program point L15-8(lines 14 20) the Hoare annotation is: (and (<= 0 |#t~string4.base|) (<= 1 ULTIMATE.start_assume_abort_if_not_~cond) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 1) (<= 0 |#t~string5.base|) (= |#t~string5.offset| 0) (<= ULTIMATE.start___VERIFIER_assert_~cond 1) (<= 1 ULTIMATE.start_main_~b~0) (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (= ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))) (<= 0 |#t~string6.base|) (= |#NULL.offset| 0) (<= ULTIMATE.start_main_~r~0 1) (<= 1 ULTIMATE.start_main_~x~0) (= |#t~string6.offset| 0) (<= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= 0 |#StackHeapBarrier|) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 1) (= 0 |#t~string4.offset|) (= |#NULL.base| 0)) [2021-11-07 01:32:06,703 INFO L857 garLoopResultBuilder]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2021-11-07 01:32:06,703 INFO L853 garLoopResultBuilder]: At program point L15-11(lines 14 20) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |#t~string4.base|))) (and (< |#StackHeapBarrier| |#t~string6.base|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| ULTIMATE.start___VERIFIER_assert_~cond) (= 14 (select |#length| |#t~string5.base|)) (<= ULTIMATE.start_main_~x~0 1) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 1) (< |#StackHeapBarrier| |#t~string5.base|) (= (select |#valid| |#t~string5.base|) 1) (= (select |#valid| |#t~string4.base|) 1) (= |#t~string5.offset| 0) (= (select |#valid| |#t~string6.base|) 1) (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))) (= (select |#valid| 0) 0) (< |#StackHeapBarrier| |#t~string4.base|) (= (select |#length| |#t~string6.base|) 12) (= (select .cse0 (+ 1 |#t~string4.offset|)) 0) (= |#NULL.offset| 0) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0) (= |#t~string6.offset| 0) (= (select |#length| |#t~string4.base|) 2) (= (select .cse0 |#t~string4.offset|) 48) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= 0 |#t~string4.offset|) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| ULTIMATE.start_assume_abort_if_not_~cond))) [2021-11-07 01:32:06,703 INFO L857 garLoopResultBuilder]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2021-11-07 01:32:06,703 INFO L853 garLoopResultBuilder]: At program point L15-14(lines 52 53) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |#t~string4.base|))) (and (< |#StackHeapBarrier| |#t~string6.base|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| ULTIMATE.start___VERIFIER_assert_~cond) (= 14 (select |#length| |#t~string5.base|)) (<= ULTIMATE.start_main_~x~0 1) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 1) (< |#StackHeapBarrier| |#t~string5.base|) (= (select |#valid| |#t~string5.base|) 1) (= (select |#valid| |#t~string4.base|) 1) (= |#t~string5.offset| 0) (= (select |#valid| |#t~string6.base|) 1) (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))) (= (select |#valid| 0) 0) (< |#StackHeapBarrier| |#t~string4.base|) (= (select |#length| |#t~string6.base|) 12) (= (select .cse0 (+ 1 |#t~string4.offset|)) 0) (= |#NULL.offset| 0) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0) (= |#t~string6.offset| 0) (= (select |#length| |#t~string4.base|) 2) (= (select .cse0 |#t~string4.offset|) 48) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= 0 |#t~string4.offset|) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| ULTIMATE.start_assume_abort_if_not_~cond))) [2021-11-07 01:32:06,703 INFO L857 garLoopResultBuilder]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2021-11-07 01:32:06,704 INFO L853 garLoopResultBuilder]: At program point L15-17(lines 14 20) the Hoare annotation is: false [2021-11-07 01:32:06,704 INFO L857 garLoopResultBuilder]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2021-11-07 01:32:06,704 INFO L853 garLoopResultBuilder]: At program point L15-20(lines 14 20) the Hoare annotation is: (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) [2021-11-07 01:32:06,704 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-07 01:32:06,704 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-11-07 01:32:06,704 INFO L857 garLoopResultBuilder]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-11-07 01:32:06,705 INFO L857 garLoopResultBuilder]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2021-11-07 01:32:06,705 INFO L857 garLoopResultBuilder]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2021-11-07 01:32:06,705 INFO L857 garLoopResultBuilder]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2021-11-07 01:32:06,705 INFO L857 garLoopResultBuilder]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2021-11-07 01:32:06,705 INFO L857 garLoopResultBuilder]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2021-11-07 01:32:06,705 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-07 01:32:06,706 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-07 01:32:06,709 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-11-07 01:32:06,710 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:32:06,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:32:06 BoogieIcfgContainer [2021-11-07 01:32:06,741 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:32:06,742 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:32:06,742 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:32:06,742 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:32:06,743 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:31:53" (3/4) ... [2021-11-07 01:32:06,745 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-07 01:32:06,760 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2021-11-07 01:32:06,760 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-11-07 01:32:06,761 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-07 01:32:06,761 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 01:32:06,784 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((((0 <= "0" && 1 <= cond) && \old(cond) <= 1) && 0 <= "cohendiv-ll.c") && #NULL <= 0) && 0 <= "cohendiv-ll.c") && 1 <= y) && b == a * y) && q == 0) && 0 <= "reach_error") && 1 <= \old(cond)) && r <= 1) && "reach_error" == 0) && cond <= 1) && a <= 0) && 0 <= #NULL) && 0 <= a) && 0 <= x) && 0 <= unknown-#StackHeapBarrier-unknown) && r == x) && y <= 1) && "cohendiv-ll.c" <= 0) && 0 == "0") && #NULL == 0) || (((((((y <= b + r && 1 <= cond) && x == b + r) && r < b) && b == a * y) && a == q) && a == 1) && y <= 1) [2021-11-07 01:32:06,785 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((y <= b + r && 1 <= cond) && 1 == cond) && x == b + r) && r < b) && b == a * y) && a == 1) && q == 1) && y <= 1) || (((((((((((((((((((((((((0 <= "0" && \old(cond) == cond) && 1 <= cond) && 1 <= cond) && \old(cond) == 1) && \old(cond) <= 1) && 0 <= "cohendiv-ll.c") && 0 <= "cohendiv-ll.c") && 0 <= r) && 1 <= y) && b == a * y) && q == 0) && 0 <= "reach_error") && #NULL == 0) && 1 <= \old(cond)) && r <= 1) && "reach_error" == 0) && cond <= 1) && a <= 0) && 0 <= a) && 0 <= unknown-#StackHeapBarrier-unknown) && r == x) && y <= 1) && "cohendiv-ll.c" <= 0) && 0 == "0") && #NULL == 0) [2021-11-07 01:32:06,785 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((y <= b + r && 1 == cond) && x == b + r) && r < b) && b == a * y) && a == 1) && q == 1) && y <= 1) || ((((((((((((((((((((((0 <= "0" && \old(cond) == cond) && 1 <= cond) && x <= 1) && \old(cond) == 1) && \old(cond) == 1) && 0 <= "cohendiv-ll.c") && "cohendiv-ll.c" == 0) && 0 <= r) && 1 <= y) && b == a * y) && x == r + q * y) && 0 <= "reach_error") && #NULL == 0) && "reach_error" == 0) && cond <= 1) && a <= 0) && 0 <= a) && 0 <= unknown-#StackHeapBarrier-unknown) && r == x) && y <= 1) && 0 == "0") && #NULL == 0) [2021-11-07 01:32:06,786 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((0 <= "0" && 1 <= cond) && 1 <= cond) && \old(cond) == 1) && \old(cond) == 1) && 0 <= "cohendiv-ll.c") && "cohendiv-ll.c" == 0) && cond <= 1) && 1 <= b) && b == a * y) && a == 1) && x == r + q * y) && 0 <= "reach_error") && #NULL == 0) && r <= 1) && 1 <= x) && "reach_error" == 0) && cond <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && r == x) && y <= 1) && 0 == "0") && #NULL == 0 [2021-11-07 01:32:06,786 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((0 <= "0" && 1 <= cond) && 1 <= cond) && \old(cond) == 1) && \old(cond) == 1) && 0 <= "cohendiv-ll.c") && "cohendiv-ll.c" == 0) && cond <= 1) && 1 <= b) && b == a * y) && a == 1) && x == r + q * y) && 0 <= "reach_error") && #NULL == 0) && r <= 1) && 1 <= x) && "reach_error" == 0) && cond <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && r == x) && y <= 1) && 0 == "0") && #NULL == 0 [2021-11-07 01:32:06,786 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((((((((unknown-#StackHeapBarrier-unknown < "reach_error" && \old(cond) == cond) && 14 == unknown-#length-unknown["cohendiv-ll.c"]) && x <= 1) && \old(cond) == 1) && \old(cond) == 1) && unknown-#StackHeapBarrier-unknown < "cohendiv-ll.c") && \valid["cohendiv-ll.c"] == 1) && \valid["0"] == 1) && "cohendiv-ll.c" == 0) && \valid["reach_error"] == 1) && 1 <= y) && a == 1) && x == r + q * y) && \valid[0] == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["reach_error"] == 12) && unknown-#memory_int-unknown["0"][1 + "0"] == 0) && #NULL == 0) && y <= r) && "reach_error" == 0) && unknown-#length-unknown["0"] == 2) && unknown-#memory_int-unknown["0"]["0"] == 48) && r == x) && 0 == "0") && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && b == y) && \old(cond) == cond [2021-11-07 01:32:06,786 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((((((((unknown-#StackHeapBarrier-unknown < "reach_error" && \old(cond) == cond) && 14 == unknown-#length-unknown["cohendiv-ll.c"]) && x <= 1) && \old(cond) == 1) && \old(cond) == 1) && unknown-#StackHeapBarrier-unknown < "cohendiv-ll.c") && \valid["cohendiv-ll.c"] == 1) && \valid["0"] == 1) && "cohendiv-ll.c" == 0) && \valid["reach_error"] == 1) && 1 <= y) && a == 1) && x == r + q * y) && \valid[0] == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["reach_error"] == 12) && unknown-#memory_int-unknown["0"][1 + "0"] == 0) && #NULL == 0) && y <= r) && "reach_error" == 0) && unknown-#length-unknown["0"] == 2) && unknown-#memory_int-unknown["0"]["0"] == 48) && r == x) && 0 == "0") && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && b == y) && \old(cond) == cond [2021-11-07 01:32:06,803 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 01:32:06,803 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:32:06,804 INFO L168 Benchmark]: Toolchain (without parser) took 14256.10 ms. Allocated memory was 96.5 MB in the beginning and 174.1 MB in the end (delta: 77.6 MB). Free memory was 65.2 MB in the beginning and 96.8 MB in the end (delta: -31.6 MB). Peak memory consumption was 47.0 MB. Max. memory is 16.1 GB. [2021-11-07 01:32:06,804 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 96.5 MB. Free memory is still 50.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:32:06,805 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.96 ms. Allocated memory is still 96.5 MB. Free memory was 65.1 MB in the beginning and 72.8 MB in the end (delta: -7.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:32:06,805 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.64 ms. Allocated memory is still 96.5 MB. Free memory was 72.8 MB in the beginning and 71.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:32:06,806 INFO L168 Benchmark]: Boogie Preprocessor took 42.96 ms. Allocated memory is still 96.5 MB. Free memory was 71.1 MB in the beginning and 70.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:32:06,806 INFO L168 Benchmark]: RCFGBuilder took 517.25 ms. Allocated memory is still 96.5 MB. Free memory was 70.0 MB in the beginning and 54.5 MB in the end (delta: 15.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:32:06,806 INFO L168 Benchmark]: TraceAbstraction took 13311.10 ms. Allocated memory was 96.5 MB in the beginning and 174.1 MB in the end (delta: 77.6 MB). Free memory was 54.2 MB in the beginning and 101.0 MB in the end (delta: -46.7 MB). Peak memory consumption was 83.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:32:06,807 INFO L168 Benchmark]: Witness Printer took 61.66 ms. Allocated memory is still 174.1 MB. Free memory was 101.0 MB in the beginning and 96.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:32:06,808 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 96.5 MB. Free memory is still 50.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 252.96 ms. Allocated memory is still 96.5 MB. Free memory was 65.1 MB in the beginning and 72.8 MB in the end (delta: -7.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.64 ms. Allocated memory is still 96.5 MB. Free memory was 72.8 MB in the beginning and 71.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.96 ms. Allocated memory is still 96.5 MB. Free memory was 71.1 MB in the beginning and 70.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 517.25 ms. Allocated memory is still 96.5 MB. Free memory was 70.0 MB in the beginning and 54.5 MB in the end (delta: 15.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13311.10 ms. Allocated memory was 96.5 MB in the beginning and 174.1 MB in the end (delta: 77.6 MB). Free memory was 54.2 MB in the beginning and 101.0 MB in the end (delta: -46.7 MB). Peak memory consumption was 83.6 MB. Max. memory is 16.1 GB. * Witness Printer took 61.66 ms. Allocated memory is still 174.1 MB. Free memory was 101.0 MB in the beginning and 96.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 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: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 13.2s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 56 SDtfs, 217 SDslu, 105 SDs, 0 SdLazy, 260 SolverSat, 89 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 212 GetRequests, 127 SyntacticMatches, 26 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=2, InterpolantAutomatonStates: 36, 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, 22 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 21 NumberOfFragments, 721 HoareAnnotationTreeSize, 9 FomulaSimplifications, 126 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 425 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 144 ConstructedInterpolants, 0 QuantifiedInterpolants, 1303 SizeOfPredicates, 30 NumberOfNonLiveVariables, 440 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 30/56 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: OVERALL_TIME[ms]: 744, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 19, DAG_INTERPRETER_EARLY_EXITS: 2, TOOLS_POST_APPLICATIONS: 39, TOOLS_POST_TIME[ms]: 343, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 36, TOOLS_QUANTIFIERELIM_TIME[ms]: 330, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 108, FLUID_QUERY_TIME[ms]: 4, FLUID_QUERIES: 57, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 7, DOMAIN_JOIN_TIME[ms]: 334, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME[ms]: 0, DOMAIN_ISSUBSETEQ_APPLICATIONS: 1, DOMAIN_ISSUBSETEQ_TIME[ms]: 0, DOMAIN_ISBOTTOM_APPLICATIONS: 19, DOMAIN_ISBOTTOM_TIME[ms]: 35, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 116, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 116, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 1, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 0, PATH_EXPR_TIME[ms]: 1, REGEX_TO_DAG_TIME[ms]: 4, DAG_COMPRESSION_TIME[ms]: 16, DAG_COMPRESSION_PROCESSED_NODES: 367, DAG_COMPRESSION_RETAINED_NODES: 66, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: b == a * y - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((unknown-#StackHeapBarrier-unknown < "reach_error" && \old(cond) == cond) && 14 == unknown-#length-unknown["cohendiv-ll.c"]) && x <= 1) && \old(cond) == 1) && \old(cond) == 1) && unknown-#StackHeapBarrier-unknown < "cohendiv-ll.c") && \valid["cohendiv-ll.c"] == 1) && \valid["0"] == 1) && "cohendiv-ll.c" == 0) && \valid["reach_error"] == 1) && 1 <= y) && a == 1) && x == r + q * y) && \valid[0] == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["reach_error"] == 12) && unknown-#memory_int-unknown["0"][1 + "0"] == 0) && #NULL == 0) && y <= r) && "reach_error" == 0) && unknown-#length-unknown["0"] == 2) && unknown-#memory_int-unknown["0"]["0"] == 48) && r == x) && 0 == "0") && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && b == y) && \old(cond) == cond - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((unknown-#StackHeapBarrier-unknown < "reach_error" && \old(cond) == cond) && 14 == unknown-#length-unknown["cohendiv-ll.c"]) && x <= 1) && \old(cond) == 1) && \old(cond) == 1) && unknown-#StackHeapBarrier-unknown < "cohendiv-ll.c") && \valid["cohendiv-ll.c"] == 1) && \valid["0"] == 1) && "cohendiv-ll.c" == 0) && \valid["reach_error"] == 1) && 1 <= y) && a == 1) && x == r + q * y) && \valid[0] == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["reach_error"] == 12) && unknown-#memory_int-unknown["0"][1 + "0"] == 0) && #NULL == 0) && y <= r) && "reach_error" == 0) && unknown-#length-unknown["0"] == 2) && unknown-#memory_int-unknown["0"]["0"] == 48) && r == x) && 0 == "0") && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && b == y) && \old(cond) == cond - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((((((((((((((0 <= "0" && 1 <= cond) && 1 <= cond) && \old(cond) == 1) && \old(cond) == 1) && 0 <= "cohendiv-ll.c") && "cohendiv-ll.c" == 0) && cond <= 1) && 1 <= b) && b == a * y) && a == 1) && x == r + q * y) && 0 <= "reach_error") && #NULL == 0) && r <= 1) && 1 <= x) && "reach_error" == 0) && cond <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && r == x) && y <= 1) && 0 == "0") && #NULL == 0 - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: (((((((y <= b + r && 1 == cond) && x == b + r) && r < b) && b == a * y) && a == 1) && q == 1) && y <= 1) || ((((((((((((((((((((((0 <= "0" && \old(cond) == cond) && 1 <= cond) && x <= 1) && \old(cond) == 1) && \old(cond) == 1) && 0 <= "cohendiv-ll.c") && "cohendiv-ll.c" == 0) && 0 <= r) && 1 <= y) && b == a * y) && x == r + q * y) && 0 <= "reach_error") && #NULL == 0) && "reach_error" == 0) && cond <= 1) && a <= 0) && 0 <= a) && 0 <= unknown-#StackHeapBarrier-unknown) && r == x) && y <= 1) && 0 == "0") && #NULL == 0) - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: (((((((((((((((((((((0 <= "0" && 1 <= cond) && 1 <= cond) && \old(cond) == 1) && \old(cond) == 1) && 0 <= "cohendiv-ll.c") && "cohendiv-ll.c" == 0) && cond <= 1) && 1 <= b) && b == a * y) && a == 1) && x == r + q * y) && 0 <= "reach_error") && #NULL == 0) && r <= 1) && 1 <= x) && "reach_error" == 0) && cond <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && r == x) && y <= 1) && 0 == "0") && #NULL == 0 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((0 <= "0" && 1 <= cond) && \old(cond) <= 1) && 0 <= "cohendiv-ll.c") && #NULL <= 0) && 0 <= "cohendiv-ll.c") && 1 <= y) && b == a * y) && q == 0) && 0 <= "reach_error") && 1 <= \old(cond)) && r <= 1) && "reach_error" == 0) && cond <= 1) && a <= 0) && 0 <= #NULL) && 0 <= a) && 0 <= x) && 0 <= unknown-#StackHeapBarrier-unknown) && r == x) && y <= 1) && "cohendiv-ll.c" <= 0) && 0 == "0") && #NULL == 0) || (((((((y <= b + r && 1 <= cond) && x == b + r) && r < b) && b == a * y) && a == q) && a == 1) && y <= 1) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((((y <= b + r && 1 <= cond) && 1 == cond) && x == b + r) && r < b) && b == a * y) && a == 1) && q == 1) && y <= 1) || (((((((((((((((((((((((((0 <= "0" && \old(cond) == cond) && 1 <= cond) && 1 <= cond) && \old(cond) == 1) && \old(cond) <= 1) && 0 <= "cohendiv-ll.c") && 0 <= "cohendiv-ll.c") && 0 <= r) && 1 <= y) && b == a * y) && q == 0) && 0 <= "reach_error") && #NULL == 0) && 1 <= \old(cond)) && r <= 1) && "reach_error" == 0) && cond <= 1) && a <= 0) && 0 <= a) && 0 <= unknown-#StackHeapBarrier-unknown) && r == x) && y <= 1) && "cohendiv-ll.c" <= 0) && 0 == "0") && #NULL == 0) RESULT: Ultimate proved your program to be correct! [2021-11-07 01:32:06,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea784c42-232f-4f49-8da4-023b1361e045/bin/utaipan-UUZaoUuFF8/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