./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05683578-536c-4250-83a1-6ff7e6188c03/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05683578-536c-4250-83a1-6ff7e6188c03/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05683578-536c-4250-83a1-6ff7e6188c03/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05683578-536c-4250-83a1-6ff7e6188c03/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05683578-536c-4250-83a1-6ff7e6188c03/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05683578-536c-4250-83a1-6ff7e6188c03/bin/utaipan-aC7eJsxGYH --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 1fbe6596ea58bb65874b731661e9f9f596a91893af06dcebaa497157579c7f46 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:56:49,703 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:56:49,705 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:56:49,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:56:49,736 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:56:49,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:56:49,740 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:56:49,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:56:49,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:56:49,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:56:49,747 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:56:49,748 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:56:49,749 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:56:49,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:56:49,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:56:49,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:56:49,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:56:49,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:56:49,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:56:49,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:56:49,763 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:56:49,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:56:49,766 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:56:49,767 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:56:49,771 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:56:49,771 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:56:49,772 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:56:49,773 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:56:49,773 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:56:49,775 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:56:49,775 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:56:49,776 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:56:49,777 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:56:49,778 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:56:49,779 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:56:49,780 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:56:49,780 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:56:49,781 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:56:49,781 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:56:49,782 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:56:49,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:56:49,784 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05683578-536c-4250-83a1-6ff7e6188c03/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 03:56:49,807 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:56:49,807 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:56:49,808 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:56:49,809 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:56:49,809 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:56:49,809 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:56:49,809 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:56:49,809 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:56:49,810 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:56:49,810 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:56:49,810 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:56:49,810 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:56:49,811 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:56:49,811 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:56:49,811 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:56:49,812 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:56:49,812 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:56:49,812 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:56:49,813 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:56:49,813 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:56:49,813 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:56:49,813 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:56:49,813 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:56:49,814 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:56:49,814 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:56:49,814 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:56:49,814 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:56:49,815 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:56:49,815 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:56:49,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:56:49,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:56:49,816 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:56:49,816 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:56:49,816 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:56:49,816 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:56:49,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:56:49,817 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:56:49,817 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:56:49,817 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:56:49,817 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_05683578-536c-4250-83a1-6ff7e6188c03/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05683578-536c-4250-83a1-6ff7e6188c03/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fbe6596ea58bb65874b731661e9f9f596a91893af06dcebaa497157579c7f46 [2021-11-03 03:56:50,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:56:50,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:56:50,092 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:56:50,094 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:56:50,095 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:56:50,096 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05683578-536c-4250-83a1-6ff7e6188c03/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound20.c [2021-11-03 03:56:50,174 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05683578-536c-4250-83a1-6ff7e6188c03/bin/utaipan-aC7eJsxGYH/data/53347bce4/7e5317cded4447e7b9f7e29c84fbe3cc/FLAG4e5f86fbd [2021-11-03 03:56:50,671 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:56:50,672 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05683578-536c-4250-83a1-6ff7e6188c03/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound20.c [2021-11-03 03:56:50,677 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05683578-536c-4250-83a1-6ff7e6188c03/bin/utaipan-aC7eJsxGYH/data/53347bce4/7e5317cded4447e7b9f7e29c84fbe3cc/FLAG4e5f86fbd [2021-11-03 03:56:51,053 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05683578-536c-4250-83a1-6ff7e6188c03/bin/utaipan-aC7eJsxGYH/data/53347bce4/7e5317cded4447e7b9f7e29c84fbe3cc [2021-11-03 03:56:51,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:56:51,058 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:56:51,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:56:51,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:56:51,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:56:51,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:56:51" (1/1) ... [2021-11-03 03:56:51,072 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5811d6d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:56:51, skipping insertion in model container [2021-11-03 03:56:51,072 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:56:51" (1/1) ... [2021-11-03 03:56:51,079 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:56:51,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:56:51,276 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_05683578-536c-4250-83a1-6ff7e6188c03/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound20.c[458,471] [2021-11-03 03:56:51,289 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:56:51,298 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:56:51,310 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_05683578-536c-4250-83a1-6ff7e6188c03/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound20.c[458,471] [2021-11-03 03:56:51,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:56:51,330 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:56:51,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:56:51 WrapperNode [2021-11-03 03:56:51,331 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:56:51,333 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:56:51,333 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:56:51,333 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:56:51,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:56:51" (1/1) ... [2021-11-03 03:56:51,347 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:56:51" (1/1) ... [2021-11-03 03:56:51,366 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:56:51,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:56:51,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:56:51,368 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:56:51,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:56:51" (1/1) ... [2021-11-03 03:56:51,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:56:51" (1/1) ... [2021-11-03 03:56:51,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:56:51" (1/1) ... [2021-11-03 03:56:51,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:56:51" (1/1) ... [2021-11-03 03:56:51,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:56:51" (1/1) ... [2021-11-03 03:56:51,386 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:56:51" (1/1) ... [2021-11-03 03:56:51,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:56:51" (1/1) ... [2021-11-03 03:56:51,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:56:51,390 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:56:51,390 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:56:51,390 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:56:51,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:56:51" (1/1) ... [2021-11-03 03:56:51,398 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:56:51,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05683578-536c-4250-83a1-6ff7e6188c03/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:56:51,421 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05683578-536c-4250-83a1-6ff7e6188c03/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:56:51,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05683578-536c-4250-83a1-6ff7e6188c03/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:56:51,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 03:56:51,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:56:51,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:56:51,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:56:51,774 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:56:51,774 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-11-03 03:56:51,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:56:51 BoogieIcfgContainer [2021-11-03 03:56:51,777 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:56:51,779 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:56:51,779 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:56:51,783 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:56:51,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:56:51" (1/3) ... [2021-11-03 03:56:51,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6472996b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:56:51, skipping insertion in model container [2021-11-03 03:56:51,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:56:51" (2/3) ... [2021-11-03 03:56:51,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6472996b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:56:51, skipping insertion in model container [2021-11-03 03:56:51,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:56:51" (3/3) ... [2021-11-03 03:56:51,787 INFO L111 eAbstractionObserver]: Analyzing ICFG ps4-ll_valuebound20.c [2021-11-03 03:56:51,792 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:56:51,792 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-03 03:56:51,837 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:56:51,843 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 [2021-11-03 03:56:51,844 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-03 03:56:51,859 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:51,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-03 03:56:51,864 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:56:51,865 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-03 03:56:51,865 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:56:51,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:56:51,872 INFO L85 PathProgramCache]: Analyzing trace with hash 2997072, now seen corresponding path program 1 times [2021-11-03 03:56:51,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:56:51,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469095270] [2021-11-03 03:56:51,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:56:51,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:56:51,989 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 03:56:51,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1323451619] [2021-11-03 03:56:51,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:56:51,991 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:56:51,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05683578-536c-4250-83a1-6ff7e6188c03/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:56:51,994 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05683578-536c-4250-83a1-6ff7e6188c03/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:56:51,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05683578-536c-4250-83a1-6ff7e6188c03/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 03:56:52,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:56:52,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 03:56:52,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:56:52,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:56:52,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:56:52,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:56:52,360 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:56:52,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469095270] [2021-11-03 03:56:52,360 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 03:56:52,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323451619] [2021-11-03 03:56:52,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323451619] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:56:52,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:56:52,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 03:56:52,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27507804] [2021-11-03 03:56:52,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:56:52,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:56:52,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:56:52,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:56:52,392 INFO L87 Difference]: Start difference. First operand has 16 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2021-11-03 03:56:53,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:56:53,405 INFO L93 Difference]: Finished difference Result 36 states and 48 transitions. [2021-11-03 03:56:53,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 03:56:53,407 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 [2021-11-03 03:56:53,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:56:53,413 INFO L225 Difference]: With dead ends: 36 [2021-11-03 03:56:53,414 INFO L226 Difference]: Without dead ends: 11 [2021-11-03 03:56:53,416 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:56:53,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-11-03 03:56:53,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-11-03 03:56:53,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:53,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-11-03 03:56:53,458 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 4 [2021-11-03 03:56:53,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:56:53,458 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-11-03 03:56:53,459 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) [2021-11-03 03:56:53,459 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-11-03 03:56:53,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-03 03:56:53,460 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:56:53,460 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-11-03 03:56:53,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05683578-536c-4250-83a1-6ff7e6188c03/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-03 03:56:53,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05683578-536c-4250-83a1-6ff7e6188c03/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-03 03:56:53,686 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:56:53,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:56:53,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1480619493, now seen corresponding path program 1 times [2021-11-03 03:56:53,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:56:53,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785562940] [2021-11-03 03:56:53,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:56:53,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:56:53,721 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 03:56:53,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [509776176] [2021-11-03 03:56:53,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:56:53,722 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:56:53,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05683578-536c-4250-83a1-6ff7e6188c03/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:56:53,724 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05683578-536c-4250-83a1-6ff7e6188c03/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:56:53,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05683578-536c-4250-83a1-6ff7e6188c03/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 03:56:53,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:56:53,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-03 03:56:53,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:56:54,040 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:56:54,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:56:54,400 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:56:54,401 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:56:54,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785562940] [2021-11-03 03:56:54,401 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 03:56:54,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509776176] [2021-11-03 03:56:54,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509776176] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:56:54,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1609316843] [2021-11-03 03:56:54,437 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-03 03:56:54,438 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 03:56:54,443 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 03:56:54,450 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 03:56:54,450 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 03:56:54,482 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:56:54,484 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:56:54,485 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:56:54,486 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 03:56:54,487 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:56:54,488 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:56:54,489 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-03 03:56:54,492 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 167 [2021-11-03 03:56:54,524 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_13|], 21=[|v_#valid_14|]} [2021-11-03 03:56:54,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:54,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:54,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:54,559 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 [2021-11-03 03:56:54,559 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:56:54,560 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 03:56:54,561 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:56:54,562 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 03:56:54,562 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:56:54,571 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-03 03:56:54,572 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:56:54,573 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 03:56:54,573 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:56:54,574 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 03:56:54,574 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 03:56:54,583 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-03 03:56:54,584 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:56:54,584 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 03:56:54,585 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:56:54,585 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 03:56:54,586 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-03 03:56:54,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:56:54,624 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:56:54,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:54,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:54,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:54,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:54,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:54,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:54,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:54,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:54,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:54,668 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 [2021-11-03 03:56:54,669 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:56:54,683 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 03:56:54,684 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:56:54,685 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 03:56:54,685 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-11-03 03:56:54,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:56:54,719 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:56:54,723 INFO L180 QuantifierPusher]: treesize reduction 8, result has 93.5 percent of original size [2021-11-03 03:56:54,725 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-03 03:56:54,726 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:56:54,727 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:444, output treesize:116 [2021-11-03 03:56:54,737 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:56:54,746 INFO L185 QuantifierPusher]: treesize reduction 12, result has 92.9 percent of original size 156 [2021-11-03 03:56:54,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:56:54,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:56:54,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:56:54,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:56:54,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:56:54,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:56:54,830 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:56:54,848 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 271 [2021-11-03 03:56:54,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:56:54,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:56:54,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:56:54,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:56:54,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:56:54,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:56:54,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:56:54,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:56:54,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:56:54,977 INFO L180 QuantifierPusher]: treesize reduction 57, result has 69.4 percent of original size [2021-11-03 03:56:54,986 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 167 [2021-11-03 03:56:55,013 INFO L180 QuantifierPusher]: treesize reduction 65, result has 68.0 percent of original size [2021-11-03 03:56:55,024 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-11-03 03:56:55,038 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 03:56:55,963 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 03:56:55,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 03:56:55,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-03 03:56:55,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105109383] [2021-11-03 03:56:55,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 03:56:55,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:56:55,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 03:56:55,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-11-03 03:56:55,967 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 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) [2021-11-03 03:56:56,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:56:56,496 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2021-11-03 03:56:56,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 03:56:56,498 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 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 10 [2021-11-03 03:56:56,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:56:56,498 INFO L225 Difference]: With dead ends: 28 [2021-11-03 03:56:56,499 INFO L226 Difference]: Without dead ends: 20 [2021-11-03 03:56:56,500 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2021-11-03 03:56:56,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-03 03:56:56,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-11-03 03:56:56,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:56:56,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2021-11-03 03:56:56,511 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 10 [2021-11-03 03:56:56,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:56:56,511 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2021-11-03 03:56:56,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 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) [2021-11-03 03:56:56,512 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2021-11-03 03:56:56,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-03 03:56:56,513 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:56:56,513 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1] [2021-11-03 03:56:56,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05683578-536c-4250-83a1-6ff7e6188c03/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-03 03:56:56,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05683578-536c-4250-83a1-6ff7e6188c03/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:56:56,726 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:56:56,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:56:56,727 INFO L85 PathProgramCache]: Analyzing trace with hash -2122995756, now seen corresponding path program 2 times [2021-11-03 03:56:56,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:56:56,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136749477] [2021-11-03 03:56:56,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:56:56,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:56:56,752 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 03:56:56,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1490560925] [2021-11-03 03:56:56,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 03:56:56,753 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:56:56,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05683578-536c-4250-83a1-6ff7e6188c03/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:56:56,766 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05683578-536c-4250-83a1-6ff7e6188c03/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:56:56,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05683578-536c-4250-83a1-6ff7e6188c03/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-03 03:56:56,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-03 03:56:56,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:56:56,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-03 03:56:56,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:56:57,203 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:56:57,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:56:57,843 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:56:57,843 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:56:57,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136749477] [2021-11-03 03:56:57,843 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 03:56:57,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490560925] [2021-11-03 03:56:57,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490560925] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:56:57,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [517101209] [2021-11-03 03:56:57,846 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-03 03:56:57,846 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 03:56:57,847 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 03:56:57,847 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 03:56:57,847 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 03:56:57,853 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:56:57,854 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:56:57,855 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:56:57,855 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-03 03:56:57,856 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:56:57,858 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:56:57,860 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 03:56:57,863 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 167 [2021-11-03 03:56:57,870 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_14|], 21=[|v_#valid_15|]} [2021-11-03 03:56:57,876 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-03 03:56:57,877 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:56:57,877 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 03:56:57,878 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:56:57,878 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 03:56:57,878 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:56:57,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:57,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:57,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:57,912 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 [2021-11-03 03:56:57,913 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:56:57,913 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 03:56:57,915 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:56:57,916 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 03:56:57,917 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 03:56:57,923 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-03 03:56:57,924 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:56:57,924 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 03:56:57,925 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:56:57,926 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 03:56:57,926 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-03 03:56:57,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:56:57,937 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:56:57,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:57,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:57,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:57,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:57,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:57,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:57,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:57,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:57,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:56:57,975 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 [2021-11-03 03:56:57,976 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:56:57,979 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 03:56:57,982 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:56:57,982 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 03:56:57,983 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-11-03 03:56:57,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:56:57,989 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:56:57,992 INFO L180 QuantifierPusher]: treesize reduction 8, result has 93.5 percent of original size [2021-11-03 03:56:57,993 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-03 03:56:57,994 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:56:57,996 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:444, output treesize:116 [2021-11-03 03:56:58,004 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:56:58,013 INFO L185 QuantifierPusher]: treesize reduction 78, result has 69.0 percent of original size 174 [2021-11-03 03:56:58,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:56:58,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:56:58,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:56:58,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:56:58,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:56:58,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:56:58,062 INFO L180 QuantifierPusher]: treesize reduction 57, result has 69.4 percent of original size [2021-11-03 03:56:58,067 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 167 [2021-11-03 03:56:58,081 INFO L180 QuantifierPusher]: treesize reduction 65, result has 68.0 percent of original size [2021-11-03 03:56:58,089 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-11-03 03:56:58,095 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 03:56:59,031 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 03:56:59,031 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 03:56:59,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-11-03 03:56:59,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178774899] [2021-11-03 03:56:59,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 03:56:59,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:56:59,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 03:56:59,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2021-11-03 03:56:59,034 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 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) [2021-11-03 03:57:00,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:57:00,474 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2021-11-03 03:57:00,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 03:57:00,474 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 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 [2021-11-03 03:57:00,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:57:00,475 INFO L225 Difference]: With dead ends: 25 [2021-11-03 03:57:00,475 INFO L226 Difference]: Without dead ends: 0 [2021-11-03 03:57:00,476 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=166, Invalid=704, Unknown=0, NotChecked=0, Total=870 [2021-11-03 03:57:00,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-03 03:57:00,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-03 03:57:00,476 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) [2021-11-03 03:57:00,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-03 03:57:00,476 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2021-11-03 03:57:00,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:57:00,477 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-03 03:57:00,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 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) [2021-11-03 03:57:00,477 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-03 03:57:00,477 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-03 03:57:00,479 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 03:57:00,480 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 03:57:00,480 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 03:57:00,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05683578-536c-4250-83a1-6ff7e6188c03/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-03 03:57:00,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05683578-536c-4250-83a1-6ff7e6188c03/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:57:00,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-03 03:57:00,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:57:00,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:57:00,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:57:00,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:57:01,193 INFO L853 garLoopResultBuilder]: At program point L27-2(lines 27 36) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~y~0 0) (= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_main_~c~0 0)) (let ((.cse0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (or (= (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~k~0) .cse0) (< ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~k~0)) (forall ((ULTIMATE.start_main_~k~0 Int)) (or (< (+ ULTIMATE.start_main_~c~0 4) ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~k~0 (+ ULTIMATE.start_main_~c~0 3)) (= (+ 16 (* 8 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (+ (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~k~0) (* 4 ULTIMATE.start_main_~k~0))))) (forall ((ULTIMATE.start_main_~k~0 Int)) (or (< (+ ULTIMATE.start_main_~c~0 3) ULTIMATE.start_main_~k~0) (= (+ (* 3 ULTIMATE.start_main_~k~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~k~0)) (+ 9 (* 6 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (<= ULTIMATE.start_main_~k~0 (+ ULTIMATE.start_main_~c~0 2)))) (= (+ (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse0 (* 2 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (* 4 ULTIMATE.start_main_~x~0))))) [2021-11-03 03:57:01,194 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-11-03 03:57:01,194 INFO L857 garLoopResultBuilder]: For program point L27-3(lines 27 36) no Hoare annotation was computed. [2021-11-03 03:57:01,194 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2021-11-03 03:57:01,194 INFO L857 garLoopResultBuilder]: For program point L11-1(lines 11 12) no Hoare annotation was computed. [2021-11-03 03:57:01,194 INFO L857 garLoopResultBuilder]: For program point L11-2(lines 11 12) no Hoare annotation was computed. [2021-11-03 03:57:01,194 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-03 03:57:01,194 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-11-03 03:57:01,195 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-03 03:57:01,195 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-11-03 03:57:01,195 INFO L857 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2021-11-03 03:57:01,195 INFO L853 garLoopResultBuilder]: At program point L10-2(lines 30 31) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (or (= (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~k~0) .cse0) (< ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~k~0)) (forall ((ULTIMATE.start_main_~k~0 Int)) (or (< (+ ULTIMATE.start_main_~c~0 4) ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~k~0 (+ ULTIMATE.start_main_~c~0 3)) (= (+ 16 (* 8 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (+ (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~k~0) (* 4 ULTIMATE.start_main_~k~0))))) (forall ((ULTIMATE.start_main_~k~0 Int)) (or (< (+ ULTIMATE.start_main_~c~0 3) ULTIMATE.start_main_~k~0) (= (+ (* 3 ULTIMATE.start_main_~k~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~k~0)) (+ 9 (* 6 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (<= ULTIMATE.start_main_~k~0 (+ ULTIMATE.start_main_~c~0 2)))) (= (+ (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse0 (* 2 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (* 4 ULTIMATE.start_main_~x~0)))) [2021-11-03 03:57:01,195 INFO L857 garLoopResultBuilder]: For program point L10-3(lines 10 13) no Hoare annotation was computed. [2021-11-03 03:57:01,195 INFO L853 garLoopResultBuilder]: At program point L10-5(lines 9 15) the Hoare annotation is: (= (+ (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (* 2 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (* 4 ULTIMATE.start_main_~x~0)) [2021-11-03 03:57:01,196 INFO L857 garLoopResultBuilder]: For program point L10-6(lines 10 13) no Hoare annotation was computed. [2021-11-03 03:57:01,196 INFO L853 garLoopResultBuilder]: At program point L10-8(lines 9 15) the Hoare annotation is: (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (* 2 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (* 4 ULTIMATE.start_main_~x~0))) [2021-11-03 03:57:01,199 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1] [2021-11-03 03:57:01,200 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 03:57:01,206 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,206 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,207 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,207 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,207 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,207 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,207 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,208 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,215 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,215 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,215 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,215 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,216 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,216 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,216 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,216 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,220 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,220 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,220 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,220 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,220 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,221 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,221 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,221 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,223 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,223 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,223 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,223 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,223 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,224 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,224 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,224 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 03:57:01 BoogieIcfgContainer [2021-11-03 03:57:01,226 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 03:57:01,226 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 03:57:01,226 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 03:57:01,227 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 03:57:01,227 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:56:51" (3/4) ... [2021-11-03 03:57:01,230 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-03 03:57:01,238 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-11-03 03:57:01,238 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-03 03:57:01,239 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-03 03:57:01,239 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-03 03:57:01,277 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05683578-536c-4250-83a1-6ff7e6188c03/bin/utaipan-aC7eJsxGYH/witness.graphml [2021-11-03 03:57:01,278 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 03:57:01,279 INFO L168 Benchmark]: Toolchain (without parser) took 10220.65 ms. Allocated memory was 111.1 MB in the beginning and 142.6 MB in the end (delta: 31.5 MB). Free memory was 69.4 MB in the beginning and 72.2 MB in the end (delta: -2.9 MB). Peak memory consumption was 29.1 MB. Max. memory is 16.1 GB. [2021-11-03 03:57:01,279 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 111.1 MB. Free memory was 85.8 MB in the beginning and 85.7 MB in the end (delta: 62.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:57:01,280 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.72 ms. Allocated memory is still 111.1 MB. Free memory was 69.2 MB in the beginning and 86.1 MB in the end (delta: -16.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 03:57:01,280 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.88 ms. Allocated memory is still 111.1 MB. Free memory was 86.1 MB in the beginning and 84.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 03:57:01,281 INFO L168 Benchmark]: Boogie Preprocessor took 21.81 ms. Allocated memory is still 111.1 MB. Free memory was 84.5 MB in the beginning and 83.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 03:57:01,281 INFO L168 Benchmark]: RCFGBuilder took 387.72 ms. Allocated memory is still 111.1 MB. Free memory was 83.3 MB in the beginning and 71.6 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 03:57:01,282 INFO L168 Benchmark]: TraceAbstraction took 9446.97 ms. Allocated memory was 111.1 MB in the beginning and 142.6 MB in the end (delta: 31.5 MB). Free memory was 71.4 MB in the beginning and 74.3 MB in the end (delta: -3.0 MB). Peak memory consumption was 31.3 MB. Max. memory is 16.1 GB. [2021-11-03 03:57:01,282 INFO L168 Benchmark]: Witness Printer took 51.39 ms. Allocated memory is still 142.6 MB. Free memory was 74.3 MB in the beginning and 72.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 03:57:01,285 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 111.1 MB. Free memory was 85.8 MB in the beginning and 85.7 MB in the end (delta: 62.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 266.72 ms. Allocated memory is still 111.1 MB. Free memory was 69.2 MB in the beginning and 86.1 MB in the end (delta: -16.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.88 ms. Allocated memory is still 111.1 MB. Free memory was 86.1 MB in the beginning and 84.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.81 ms. Allocated memory is still 111.1 MB. Free memory was 84.5 MB in the beginning and 83.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 387.72 ms. Allocated memory is still 111.1 MB. Free memory was 83.3 MB in the beginning and 71.6 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9446.97 ms. Allocated memory was 111.1 MB in the beginning and 142.6 MB in the end (delta: 31.5 MB). Free memory was 71.4 MB in the beginning and 74.3 MB in the end (delta: -3.0 MB). Peak memory consumption was 31.3 MB. Max. memory is 16.1 GB. * Witness Printer took 51.39 ms. Allocated memory is still 142.6 MB. Free memory was 74.3 MB in the beginning and 72.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] * 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: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 12]: 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, 16 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 9.3s, OverallIterations: 3, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 16 SDtfs, 63 SDslu, 54 SDs, 0 SdLazy, 158 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 107 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=2, InterpolantAutomatonStates: 30, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 20 NumberOfFragments, 233 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 492 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 60 ConstructedInterpolants, 15 QuantifiedInterpolants, 711 SizeOfPredicates, 13 NumberOfNonLiveVariables, 225 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/66 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant [2021-11-03 03:57:01,292 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,292 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,292 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,292 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,292 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,293 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,293 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,293 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,294 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,294 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,294 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,294 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,294 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,294 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,295 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,295 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] Derived loop invariant: (((1 <= cond && (y * k == y * y || c < k)) && (forall ULTIMATE.start_main_~k~0 : int :: (c + 4 < ULTIMATE.start_main_~k~0 || ULTIMATE.start_main_~k~0 <= c + 3) || 16 + 8 * y + y * y == y * ULTIMATE.start_main_~k~0 + 4 * ULTIMATE.start_main_~k~0)) && (forall ULTIMATE.start_main_~k~0 : int :: (c + 3 < ULTIMATE.start_main_~k~0 || 3 * ULTIMATE.start_main_~k~0 + y * ULTIMATE.start_main_~k~0 == 9 + 6 * y + y * y) || ULTIMATE.start_main_~k~0 <= c + 2)) && y * y * y * y + y * y + 2 * (y * y * y) == 4 * x - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 1 <= cond && y * y * y * y + y * y + 2 * (y * y * y) == 4 * x - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: y * y * y * y + y * y + 2 * (y * y * y) == 4 * x - InvariantResult [Line: 27]: Loop Invariant [2021-11-03 03:57:01,297 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,297 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,297 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,297 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,297 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,298 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,298 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,298 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,299 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,299 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,299 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,299 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,299 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,299 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,299 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-11-03 03:57:01,300 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] Derived loop invariant: ((y == 0 && x == 0) && c == 0) || ((((1 <= cond && (y * k == y * y || c < k)) && (forall ULTIMATE.start_main_~k~0 : int :: (c + 4 < ULTIMATE.start_main_~k~0 || ULTIMATE.start_main_~k~0 <= c + 3) || 16 + 8 * y + y * y == y * ULTIMATE.start_main_~k~0 + 4 * ULTIMATE.start_main_~k~0)) && (forall ULTIMATE.start_main_~k~0 : int :: (c + 3 < ULTIMATE.start_main_~k~0 || 3 * ULTIMATE.start_main_~k~0 + y * ULTIMATE.start_main_~k~0 == 9 + 6 * y + y * y) || ULTIMATE.start_main_~k~0 <= c + 2)) && y * y * y * y + y * y + 2 * (y * y * y) == 4 * x) RESULT: Ultimate proved your program to be correct! [2021-11-03 03:57:01,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05683578-536c-4250-83a1-6ff7e6188c03/bin/utaipan-aC7eJsxGYH/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