./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE --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 53908028cfc42f68f62c10378662b57f64149241c563947e258b97b254c402b4 ................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE --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 53908028cfc42f68f62c10378662b57f64149241c563947e258b97b254c402b4 .................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 09:49:40,456 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:49:40,459 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:49:40,525 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:49:40,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:49:40,532 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:49:40,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:49:40,540 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:49:40,543 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:49:40,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:49:40,553 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:49:40,555 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:49:40,556 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:49:40,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:49:40,563 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:49:40,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:49:40,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:49:40,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:49:40,576 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:49:40,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:49:40,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:49:40,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:49:40,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:49:40,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:49:40,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:49:40,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:49:40,612 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:49:40,615 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:49:40,616 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:49:40,618 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:49:40,619 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:49:40,621 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:49:40,623 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:49:40,625 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:49:40,627 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:49:40,628 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:49:40,629 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:49:40,629 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:49:40,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:49:40,631 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:49:40,632 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:49:40,634 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 09:49:40,692 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:49:40,695 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:49:40,698 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:49:40,698 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:49:40,698 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:49:40,699 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:49:40,699 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 09:49:40,699 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:49:40,707 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:49:40,708 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 09:49:40,709 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 09:49:40,710 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:49:40,710 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 09:49:40,710 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 09:49:40,711 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 09:49:40,712 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:49:40,712 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 09:49:40,712 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 09:49:40,712 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 09:49:40,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:49:40,713 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 09:49:40,713 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:49:40,713 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 09:49:40,714 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 09:49:40,714 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 09:49:40,714 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 09:49:40,715 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:49:40,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 09:49:40,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:49:40,718 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:49:40,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:49:40,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:49:40,719 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:49:40,719 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 09:49:40,719 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 09:49:40,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 09:49:40,720 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 09:49:40,720 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:49:40,721 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:49:40,721 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_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53908028cfc42f68f62c10378662b57f64149241c563947e258b97b254c402b4 [2021-10-24 09:49:41,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:49:41,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:49:41,074 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:49:41,076 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:49:41,077 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:49:41,077 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c [2021-10-24 09:49:41,165 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/data/3b1e0ab4d/b19d2eee4f0f4e2e82f3b5b59ec50a38/FLAGb4d5ef7c4 [2021-10-24 09:49:41,741 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:49:41,744 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c [2021-10-24 09:49:41,758 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/data/3b1e0ab4d/b19d2eee4f0f4e2e82f3b5b59ec50a38/FLAGb4d5ef7c4 [2021-10-24 09:49:42,084 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/data/3b1e0ab4d/b19d2eee4f0f4e2e82f3b5b59ec50a38 [2021-10-24 09:49:42,087 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:49:42,088 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:49:42,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:49:42,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:49:42,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:49:42,098 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:49:42" (1/1) ... [2021-10-24 09:49:42,099 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8024ad4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:42, skipping insertion in model container [2021-10-24 09:49:42,099 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:49:42" (1/1) ... [2021-10-24 09:49:42,106 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:49:42,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:49:42,323 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_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c[709,722] [2021-10-24 09:49:42,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:49:42,378 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 09:49:42,394 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_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c[709,722] [2021-10-24 09:49:42,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:49:42,443 INFO L208 MainTranslator]: Completed translation [2021-10-24 09:49:42,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:42 WrapperNode [2021-10-24 09:49:42,445 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:49:42,448 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 09:49:42,448 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 09:49:42,448 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 09:49:42,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:42" (1/1) ... [2021-10-24 09:49:42,474 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:42" (1/1) ... [2021-10-24 09:49:42,506 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 09:49:42,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 09:49:42,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 09:49:42,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 09:49:42,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:42" (1/1) ... [2021-10-24 09:49:42,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:42" (1/1) ... [2021-10-24 09:49:42,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:42" (1/1) ... [2021-10-24 09:49:42,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:42" (1/1) ... [2021-10-24 09:49:42,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:42" (1/1) ... [2021-10-24 09:49:42,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:42" (1/1) ... [2021-10-24 09:49:42,549 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:42" (1/1) ... [2021-10-24 09:49:42,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 09:49:42,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 09:49:42,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 09:49:42,557 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 09:49:42,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:42" (1/1) ... [2021-10-24 09:49:42,565 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:49:42,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:49:42,594 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 09:49:42,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 09:49:42,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 09:49:42,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 09:49:42,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 09:49:42,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 09:49:42,964 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 09:49:42,964 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-10-24 09:49:42,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:49:42 BoogieIcfgContainer [2021-10-24 09:49:42,967 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 09:49:42,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 09:49:42,969 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 09:49:42,973 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 09:49:42,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:49:42" (1/3) ... [2021-10-24 09:49:42,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41f10515 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:49:42, skipping insertion in model container [2021-10-24 09:49:42,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:42" (2/3) ... [2021-10-24 09:49:42,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41f10515 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:49:42, skipping insertion in model container [2021-10-24 09:49:42,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:49:42" (3/3) ... [2021-10-24 09:49:42,977 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound20.c [2021-10-24 09:49:42,983 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 09:49:42,988 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-24 09:49:43,077 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 09:49:43,084 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 09:49:43,084 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-24 09:49:43,101 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 27 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:49:43,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-24 09:49:43,106 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:49:43,107 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-24 09:49:43,108 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-24 09:49:43,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:49:43,114 INFO L82 PathProgramCache]: Analyzing trace with hash 3980175, now seen corresponding path program 1 times [2021-10-24 09:49:43,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:49:43,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036590814] [2021-10-24 09:49:43,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:49:43,131 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:49:43,270 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 09:49:43,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [978502716] [2021-10-24 09:49:43,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:49:43,272 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:49:43,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:49:43,275 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 09:49:43,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-24 09:49:43,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 09:49:43,353 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 09:49:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 09:49:43,396 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 09:49:43,399 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 09:49:43,400 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:49:43,402 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:49:43,403 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:49:43,403 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:49:43,404 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:49:43,405 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:49:43,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-24 09:49:43,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-24 09:49:43,630 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 09:49:43,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:49:43 BoogieIcfgContainer [2021-10-24 09:49:43,654 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 09:49:43,657 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 09:49:43,658 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 09:49:43,658 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 09:49:43,659 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:49:42" (3/4) ... [2021-10-24 09:49:43,662 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-24 09:49:43,662 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 09:49:43,665 INFO L168 Benchmark]: Toolchain (without parser) took 1575.91 ms. Allocated memory is still 119.5 MB. Free memory was 86.8 MB in the beginning and 63.1 MB in the end (delta: 23.7 MB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. [2021-10-24 09:49:43,666 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 88.1 MB. Free memory is still 42.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:49:43,668 INFO L168 Benchmark]: CACSL2BoogieTranslator took 353.80 ms. Allocated memory is still 119.5 MB. Free memory was 86.6 MB in the beginning and 94.4 MB in the end (delta: -7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 09:49:43,670 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.95 ms. Allocated memory is still 119.5 MB. Free memory was 94.4 MB in the beginning and 92.9 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:49:43,673 INFO L168 Benchmark]: Boogie Preprocessor took 48.50 ms. Allocated memory is still 119.5 MB. Free memory was 92.9 MB in the beginning and 91.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:49:43,679 INFO L168 Benchmark]: RCFGBuilder took 411.67 ms. Allocated memory is still 119.5 MB. Free memory was 91.5 MB in the beginning and 79.3 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 09:49:43,681 INFO L168 Benchmark]: TraceAbstraction took 684.95 ms. Allocated memory is still 119.5 MB. Free memory was 78.5 MB in the beginning and 63.5 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-24 09:49:43,681 INFO L168 Benchmark]: Witness Printer took 5.85 ms. Allocated memory is still 119.5 MB. Free memory was 63.5 MB in the beginning and 63.1 MB in the end (delta: 432.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:49:43,691 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 88.1 MB. Free memory is still 42.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 353.80 ms. Allocated memory is still 119.5 MB. Free memory was 86.6 MB in the beginning and 94.4 MB in the end (delta: -7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.95 ms. Allocated memory is still 119.5 MB. Free memory was 94.4 MB in the beginning and 92.9 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.50 ms. Allocated memory is still 119.5 MB. Free memory was 92.9 MB in the beginning and 91.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 411.67 ms. Allocated memory is still 119.5 MB. Free memory was 91.5 MB in the beginning and 79.3 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 684.95 ms. Allocated memory is still 119.5 MB. Free memory was 78.5 MB in the beginning and 63.5 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Witness Printer took 5.85 ms. Allocated memory is still 119.5 MB. Free memory was 63.5 MB in the beginning and 63.1 MB in the end (delta: 432.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 34, overapproximation of someBinaryDOUBLEComparisonOperation at line 28. Possible FailurePath: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L14] COND FALSE !(!cond) [L29] x = a [L30] s = 3.25 [L31] r = 1 [L33] COND TRUE 1 [L17] COND TRUE !(cond) [L19] reach_error() - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 553.4ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 9.9ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 4.8ms SsaConstructionTime, 23.3ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-24 09:49:43,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 09:49:46,305 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:49:46,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:49:46,338 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:49:46,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:49:46,340 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:49:46,342 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:49:46,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:49:46,347 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:49:46,348 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:49:46,349 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:49:46,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:49:46,351 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:49:46,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:49:46,355 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:49:46,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:49:46,358 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:49:46,359 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:49:46,361 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:49:46,364 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:49:46,367 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:49:46,368 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:49:46,370 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:49:46,371 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:49:46,376 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:49:46,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:49:46,377 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:49:46,378 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:49:46,379 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:49:46,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:49:46,381 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:49:46,382 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:49:46,383 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:49:46,384 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:49:46,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:49:46,386 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:49:46,398 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:49:46,400 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:49:46,400 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:49:46,402 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:49:46,403 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:49:46,405 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-24 09:49:46,435 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:49:46,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:49:46,444 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:49:46,445 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:49:46,445 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:49:46,445 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:49:46,446 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:49:46,446 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:49:46,446 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:49:46,447 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:49:46,448 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 09:49:46,448 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 09:49:46,449 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:49:46,449 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 09:49:46,449 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:49:46,449 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 09:49:46,450 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 09:49:46,450 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 09:49:46,450 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 09:49:46,450 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 09:49:46,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 09:49:46,451 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:49:46,451 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 09:49:46,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:49:46,451 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 09:49:46,452 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:49:46,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:49:46,452 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:49:46,453 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:49:46,453 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 09:49:46,454 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 09:49:46,454 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 09:49:46,454 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 09:49:46,454 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:49:46,454 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:49:46,455 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53908028cfc42f68f62c10378662b57f64149241c563947e258b97b254c402b4 [2021-10-24 09:49:46,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:49:46,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:49:46,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:49:46,883 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:49:46,884 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:49:46,885 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c [2021-10-24 09:49:46,955 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/data/36bc1faa1/8ae328a1dfca4f0e9d8acd6ed9f5e1ad/FLAG4b4ec2593 [2021-10-24 09:49:47,498 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:49:47,498 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c [2021-10-24 09:49:47,512 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/data/36bc1faa1/8ae328a1dfca4f0e9d8acd6ed9f5e1ad/FLAG4b4ec2593 [2021-10-24 09:49:47,870 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/data/36bc1faa1/8ae328a1dfca4f0e9d8acd6ed9f5e1ad [2021-10-24 09:49:47,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:49:47,878 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:49:47,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:49:47,881 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:49:47,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:49:47,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:49:47" (1/1) ... [2021-10-24 09:49:47,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c2ef97d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:47, skipping insertion in model container [2021-10-24 09:49:47,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:49:47" (1/1) ... [2021-10-24 09:49:47,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:49:47,940 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:49:48,149 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_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c[709,722] [2021-10-24 09:49:48,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:49:48,189 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 09:49:48,201 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_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c[709,722] [2021-10-24 09:49:48,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:49:48,265 INFO L208 MainTranslator]: Completed translation [2021-10-24 09:49:48,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:48 WrapperNode [2021-10-24 09:49:48,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:49:48,267 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 09:49:48,267 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 09:49:48,268 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 09:49:48,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:48" (1/1) ... [2021-10-24 09:49:48,325 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:48" (1/1) ... [2021-10-24 09:49:48,346 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 09:49:48,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 09:49:48,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 09:49:48,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 09:49:48,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:48" (1/1) ... [2021-10-24 09:49:48,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:48" (1/1) ... [2021-10-24 09:49:48,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:48" (1/1) ... [2021-10-24 09:49:48,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:48" (1/1) ... [2021-10-24 09:49:48,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:48" (1/1) ... [2021-10-24 09:49:48,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:48" (1/1) ... [2021-10-24 09:49:48,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:48" (1/1) ... [2021-10-24 09:49:48,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 09:49:48,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 09:49:48,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 09:49:48,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 09:49:48,379 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:48" (1/1) ... [2021-10-24 09:49:48,386 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:49:48,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:49:48,410 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 09:49:48,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 09:49:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-24 09:49:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 09:49:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 09:49:48,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 09:49:59,706 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 09:49:59,707 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-10-24 09:49:59,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:49:59 BoogieIcfgContainer [2021-10-24 09:49:59,709 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 09:49:59,711 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 09:49:59,712 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 09:49:59,715 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 09:49:59,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:49:47" (1/3) ... [2021-10-24 09:49:59,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@608c5f26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:49:59, skipping insertion in model container [2021-10-24 09:49:59,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:48" (2/3) ... [2021-10-24 09:49:59,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@608c5f26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:49:59, skipping insertion in model container [2021-10-24 09:49:59,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:49:59" (3/3) ... [2021-10-24 09:49:59,719 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound20.c [2021-10-24 09:49:59,726 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 09:49:59,726 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-24 09:49:59,776 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 09:49:59,787 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 09:49:59,788 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-24 09:49:59,804 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:49:59,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-24 09:49:59,809 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:49:59,810 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:49:59,810 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-24 09:49:59,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:49:59,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-10-24 09:49:59,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:49:59,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [309276810] [2021-10-24 09:49:59,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:49:59,836 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:49:59,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:49:59,840 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:49:59,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 09:50:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:50:00,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-24 09:50:00,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:50:00,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:50:00,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:50:00,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:50:00,229 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:50:00,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [309276810] [2021-10-24 09:50:00,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [309276810] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:50:00,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:50:00,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-24 09:50:00,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703228707] [2021-10-24 09:50:00,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 09:50:00,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:50:00,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 09:50:00,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 09:50:00,257 INFO L87 Difference]: Start difference. First operand has 33 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:50:00,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:50:00,282 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2021-10-24 09:50:00,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 09:50:00,283 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-24 09:50:00,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:50:00,293 INFO L225 Difference]: With dead ends: 63 [2021-10-24 09:50:00,293 INFO L226 Difference]: Without dead ends: 29 [2021-10-24 09:50:00,296 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 09:50:00,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-24 09:50:00,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-24 09:50:00,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 28 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:50:00,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-10-24 09:50:00,337 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2021-10-24 09:50:00,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:50:00,338 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-10-24 09:50:00,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:50:00,339 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-10-24 09:50:00,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-24 09:50:00,339 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:50:00,340 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:50:00,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-24 09:50:00,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:50:00,556 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-24 09:50:00,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:50:00,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-10-24 09:50:00,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:50:00,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1970611716] [2021-10-24 09:50:00,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:50:00,560 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:50:00,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:50:00,561 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:50:00,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 09:50:00,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:50:00,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-24 09:50:00,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:50:01,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:50:01,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:50:08,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:50:08,940 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:50:08,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1970611716] [2021-10-24 09:50:08,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1970611716] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:50:08,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:50:08,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-24 09:50:08,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436515048] [2021-10-24 09:50:08,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-24 09:50:08,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:50:08,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-24 09:50:08,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-24 09:50:08,944 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:50:40,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:50:40,095 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2021-10-24 09:50:40,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 09:50:40,096 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-24 09:50:40,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:50:40,097 INFO L225 Difference]: With dead ends: 34 [2021-10-24 09:50:40,097 INFO L226 Difference]: Without dead ends: 32 [2021-10-24 09:50:40,098 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 6561.1ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-24 09:50:40,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-24 09:50:40,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2021-10-24 09:50:40,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.24) internal successors, (31), 30 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:50:40,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2021-10-24 09:50:40,104 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 7 [2021-10-24 09:50:40,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:50:40,105 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2021-10-24 09:50:40,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:50:40,105 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2021-10-24 09:50:40,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-24 09:50:40,106 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:50:40,106 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:50:40,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-24 09:50:40,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:50:40,307 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-24 09:50:40,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:50:40,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2021-10-24 09:50:40,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:50:40,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [603475217] [2021-10-24 09:50:40,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:50:40,309 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:50:40,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:50:40,311 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:50:40,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-24 09:50:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:50:41,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-24 09:50:41,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:50:43,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:50:43,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:50:49,742 WARN L838 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) is different from false [2021-10-24 09:50:51,785 WARN L860 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) is different from true [2021-10-24 09:51:22,537 WARN L207 SmtUtils]: Spent 6.34 s on a formula simplification that was a NOOP. DAG size: 13 [2021-10-24 09:51:23,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:51:23,610 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:51:23,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [603475217] [2021-10-24 09:51:23,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [603475217] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:51:23,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:51:23,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-24 09:51:23,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752211303] [2021-10-24 09:51:23,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-24 09:51:23,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:51:23,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-24 09:51:23,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=62, Unknown=2, NotChecked=16, Total=110 [2021-10-24 09:51:23,621 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:51:29,573 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.leq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv20 32)))) (.cse1 (fp.geq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))) (and .cse0 (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) .cse1 (or (and (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)) (or (not .cse1) (not .cse0))) (and .cse0 .cse1 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)))) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-24 09:51:32,110 WARN L860 $PredicateComparison]: unable to prove that (and (fp.leq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv20 32))) (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) (fp.geq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-24 09:52:12,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:52:12,029 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2021-10-24 09:52:12,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-24 09:52:12,030 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-24 09:52:12,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:52:12,031 INFO L225 Difference]: With dead ends: 36 [2021-10-24 09:52:12,031 INFO L226 Difference]: Without dead ends: 34 [2021-10-24 09:52:12,032 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 29746.0ms TimeCoverageRelationStatistics Valid=41, Invalid=77, Unknown=4, NotChecked=60, Total=182 [2021-10-24 09:52:12,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-24 09:52:12,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2021-10-24 09:52:12,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 32 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:52:12,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2021-10-24 09:52:12,040 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 9 [2021-10-24 09:52:12,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:52:12,041 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2021-10-24 09:52:12,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:52:12,042 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2021-10-24 09:52:12,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-24 09:52:12,043 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:52:12,043 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:52:12,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-24 09:52:12,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:52:12,257 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-24 09:52:12,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:52:12,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2021-10-24 09:52:12,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:52:12,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [717854917] [2021-10-24 09:52:12,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:52:12,259 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:52:12,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:52:12,265 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:52:12,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-24 09:52:23,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 09:52:23,723 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 09:52:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 09:52:28,628 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-24 09:52:28,629 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 09:52:28,630 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:52:28,632 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:52:28,632 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:52:28,632 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:52:28,633 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:52:28,633 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:52:28,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-24 09:52:28,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:52:28,840 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 09:52:28,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:52:28 BoogieIcfgContainer [2021-10-24 09:52:28,870 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 09:52:28,872 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 09:52:28,872 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 09:52:28,872 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 09:52:28,873 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:49:59" (3/4) ... [2021-10-24 09:52:28,876 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-24 09:52:28,952 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 09:52:28,953 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 09:52:28,955 INFO L168 Benchmark]: Toolchain (without parser) took 161076.79 ms. Allocated memory was 73.4 MB in the beginning and 98.6 MB in the end (delta: 25.2 MB). Free memory was 38.4 MB in the beginning and 41.5 MB in the end (delta: -3.2 MB). Peak memory consumption was 22.9 MB. Max. memory is 16.1 GB. [2021-10-24 09:52:28,956 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 73.4 MB. Free memory was 54.6 MB in the beginning and 54.6 MB in the end (delta: 66.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:52:28,957 INFO L168 Benchmark]: CACSL2BoogieTranslator took 386.09 ms. Allocated memory is still 73.4 MB. Free memory was 38.2 MB in the beginning and 58.0 MB in the end (delta: -19.8 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:52:28,958 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.77 ms. Allocated memory is still 73.4 MB. Free memory was 58.0 MB in the beginning and 56.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:52:28,960 INFO L168 Benchmark]: Boogie Preprocessor took 30.38 ms. Allocated memory is still 73.4 MB. Free memory was 56.3 MB in the beginning and 54.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:52:28,963 INFO L168 Benchmark]: RCFGBuilder took 11331.72 ms. Allocated memory is still 73.4 MB. Free memory was 54.7 MB in the beginning and 43.3 MB in the end (delta: 11.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 09:52:28,965 INFO L168 Benchmark]: TraceAbstraction took 149158.63 ms. Allocated memory was 73.4 MB in the beginning and 98.6 MB in the end (delta: 25.2 MB). Free memory was 42.9 MB in the beginning and 43.6 MB in the end (delta: -685.0 kB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-24 09:52:28,979 INFO L168 Benchmark]: Witness Printer took 82.09 ms. Allocated memory is still 98.6 MB. Free memory was 43.6 MB in the beginning and 41.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:52:28,982 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 73.4 MB. Free memory was 54.6 MB in the beginning and 54.6 MB in the end (delta: 66.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 386.09 ms. Allocated memory is still 73.4 MB. Free memory was 38.2 MB in the beginning and 58.0 MB in the end (delta: -19.8 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 78.77 ms. Allocated memory is still 73.4 MB. Free memory was 58.0 MB in the beginning and 56.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.38 ms. Allocated memory is still 73.4 MB. Free memory was 56.3 MB in the beginning and 54.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 11331.72 ms. Allocated memory is still 73.4 MB. Free memory was 54.7 MB in the beginning and 43.3 MB in the end (delta: 11.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 149158.63 ms. Allocated memory was 73.4 MB in the beginning and 98.6 MB in the end (delta: 25.2 MB). Free memory was 42.9 MB in the beginning and 43.6 MB in the end (delta: -685.0 kB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * Witness Printer took 82.09 ms. Allocated memory is still 98.6 MB. Free memory was 43.6 MB in the beginning and 41.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L14] COND FALSE !(!cond) [L29] x = a [L30] s = 3.25 [L31] r = 1 [L33] COND TRUE 1 [L17] COND FALSE !(!(cond)) [L17] COND FALSE !(!(cond)) [L17] COND TRUE !(cond) [L19] reach_error() - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 149063.4ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 11.0ms, AutomataDifference: 79633.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 83 SDtfs, 19 SDslu, 110 SDs, 0 SdLazy, 78 SolverSat, 10 SolverUnsat, 27 SolverUnknown, 0 SolverNotchecked, 71726.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 36307.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 39.5ms AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 52.8ms SsaConstructionTime, 12425.3ms SatisfiabilityAnalysisTime, 50926.2ms InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 327 SizeOfPredicates, 11 NumberOfNonLiveVariables, 102 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-24 09:52:29,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6af8cb-a869-42ce-be3a-8a288f8cc7b6/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...