./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG --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 ff5daa36c47d3acf04ff127d3f9a6e17688f7f254f16d34cb2769aec1ca052fe ................................................................................................................................................................................................................................................................................. 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_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG --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 ff5daa36c47d3acf04ff127d3f9a6e17688f7f254f16d34cb2769aec1ca052fe ................................................................................................................................................................................................................................................................................................................................................................................................................................. 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-b2eff8b [2021-10-29 05:06:29,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:06:29,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:06:29,569 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:06:29,570 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:06:29,575 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:06:29,578 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:06:29,582 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:06:29,585 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:06:29,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:06:29,593 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:06:29,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:06:29,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:06:29,599 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:06:29,602 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:06:29,609 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:06:29,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:06:29,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:06:29,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:06:29,628 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:06:29,630 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:06:29,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:06:29,635 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:06:29,636 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:06:29,641 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:06:29,641 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:06:29,642 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:06:29,643 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:06:29,644 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:06:29,645 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:06:29,646 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:06:29,647 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:06:29,648 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:06:29,649 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:06:29,651 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:06:29,651 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:06:29,652 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:06:29,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:06:29,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:06:29,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:06:29,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:06:29,656 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:06:29,687 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:06:29,688 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:06:29,689 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:06:29,689 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:06:29,689 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:06:29,690 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:06:29,690 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:06:29,690 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:06:29,691 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:06:29,691 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:06:29,691 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:06:29,692 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:06:29,692 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:06:29,692 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:06:29,692 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:06:29,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:06:29,694 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:06:29,694 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:06:29,694 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:06:29,695 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:06:29,695 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:06:29,695 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:06:29,696 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:06:29,696 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:06:29,696 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:06:29,696 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:06:29,697 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:06:29,697 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:06:29,697 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:06:29,698 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:06:29,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:06:29,698 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:06:29,699 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:06:29,699 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:06:29,699 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:06:29,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:06:29,700 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:06:29,700 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:06:29,700 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:06:29,700 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_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff5daa36c47d3acf04ff127d3f9a6e17688f7f254f16d34cb2769aec1ca052fe [2021-10-29 05:06:30,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:06:30,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:06:30,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:06:30,073 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:06:30,074 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:06:30,076 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound1.c [2021-10-29 05:06:30,164 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/data/d668ece10/21d223d7080b4aebb12482386d6a5835/FLAG5300249c0 [2021-10-29 05:06:30,715 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:06:30,715 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound1.c [2021-10-29 05:06:30,728 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/data/d668ece10/21d223d7080b4aebb12482386d6a5835/FLAG5300249c0 [2021-10-29 05:06:31,045 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/data/d668ece10/21d223d7080b4aebb12482386d6a5835 [2021-10-29 05:06:31,049 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:06:31,050 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:06:31,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:06:31,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:06:31,058 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:06:31,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:06:31" (1/1) ... [2021-10-29 05:06:31,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@728e502f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:31, skipping insertion in model container [2021-10-29 05:06:31,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:06:31" (1/1) ... [2021-10-29 05:06:31,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:06:31,091 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:06:31,280 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_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound1.c[709,722] [2021-10-29 05:06:31,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:06:31,316 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:06:31,330 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_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound1.c[709,722] [2021-10-29 05:06:31,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:06:31,357 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:06:31,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:31 WrapperNode [2021-10-29 05:06:31,358 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:06:31,359 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:06:31,359 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:06:31,359 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:06:31,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:31" (1/1) ... [2021-10-29 05:06:31,376 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:31" (1/1) ... [2021-10-29 05:06:31,400 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:06:31,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:06:31,405 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:06:31,405 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:06:31,414 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:31" (1/1) ... [2021-10-29 05:06:31,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:31" (1/1) ... [2021-10-29 05:06:31,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:31" (1/1) ... [2021-10-29 05:06:31,420 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:31" (1/1) ... [2021-10-29 05:06:31,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:31" (1/1) ... [2021-10-29 05:06:31,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:31" (1/1) ... [2021-10-29 05:06:31,454 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:31" (1/1) ... [2021-10-29 05:06:31,456 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:06:31,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:06:31,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:06:31,458 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:06:31,464 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:31" (1/1) ... [2021-10-29 05:06:31,471 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:06:31,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:06:31,502 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:06:31,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:06:31,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:06:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:06:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:06:31,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:06:31,943 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:06:31,944 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-10-29 05:06:31,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:06:31 BoogieIcfgContainer [2021-10-29 05:06:31,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:06:31,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:06:31,949 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:06:31,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:06:31,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:06:31" (1/3) ... [2021-10-29 05:06:31,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9faf9bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:06:31, skipping insertion in model container [2021-10-29 05:06:31,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:31" (2/3) ... [2021-10-29 05:06:31,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9faf9bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:06:31, skipping insertion in model container [2021-10-29 05:06:31,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:06:31" (3/3) ... [2021-10-29 05:06:31,957 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound1.c [2021-10-29 05:06:31,963 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:06:31,963 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-29 05:06:32,020 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:06:32,027 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 [2021-10-29 05:06:32,028 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-29 05:06:32,045 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) [2021-10-29 05:06:32,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-29 05:06:32,051 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:06:32,052 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-29 05:06:32,053 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)] === [2021-10-29 05:06:32,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:06:32,059 INFO L85 PathProgramCache]: Analyzing trace with hash 3980175, now seen corresponding path program 1 times [2021-10-29 05:06:32,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:06:32,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100733067] [2021-10-29 05:06:32,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:06:32,074 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:06:32,196 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 05:06:32,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [391312131] [2021-10-29 05:06:32,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:06:32,197 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:06:32,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:06:32,200 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:06:32,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 05:06:32,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:06:32,307 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:06:32,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:06:32,357 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 05:06:32,366 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:06:32,371 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:06:32,374 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:06:32,374 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:06:32,375 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:06:32,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:06:32,377 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:06:32,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:06:32,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-29 05:06:32,605 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-10-29 05:06:32,610 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:06:32,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:06:32 BoogieIcfgContainer [2021-10-29 05:06:32,631 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:06:32,633 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:06:32,633 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:06:32,633 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:06:32,634 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:06:31" (3/4) ... [2021-10-29 05:06:32,636 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 05:06:32,636 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:06:32,639 INFO L168 Benchmark]: Toolchain (without parser) took 1587.29 ms. Allocated memory was 90.2 MB in the beginning and 125.8 MB in the end (delta: 35.7 MB). Free memory was 53.2 MB in the beginning and 68.0 MB in the end (delta: -14.7 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. [2021-10-29 05:06:32,639 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 90.2 MB. Free memory is still 69.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:06:32,641 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.65 ms. Allocated memory was 90.2 MB in the beginning and 125.8 MB in the end (delta: 35.7 MB). Free memory was 53.0 MB in the beginning and 100.8 MB in the end (delta: -47.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:06:32,641 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.02 ms. Allocated memory is still 125.8 MB. Free memory was 100.8 MB in the beginning and 99.1 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:06:32,642 INFO L168 Benchmark]: Boogie Preprocessor took 52.01 ms. Allocated memory is still 125.8 MB. Free memory was 99.1 MB in the beginning and 97.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:06:32,643 INFO L168 Benchmark]: RCFGBuilder took 489.37 ms. Allocated memory is still 125.8 MB. Free memory was 97.5 MB in the beginning and 84.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:06:32,644 INFO L168 Benchmark]: TraceAbstraction took 683.10 ms. Allocated memory is still 125.8 MB. Free memory was 84.5 MB in the beginning and 68.4 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-29 05:06:32,645 INFO L168 Benchmark]: Witness Printer took 4.05 ms. Allocated memory is still 125.8 MB. Free memory is still 68.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:06:32,649 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 90.2 MB. Free memory is still 69.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 305.65 ms. Allocated memory was 90.2 MB in the beginning and 125.8 MB in the end (delta: 35.7 MB). Free memory was 53.0 MB in the beginning and 100.8 MB in the end (delta: -47.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.02 ms. Allocated memory is still 125.8 MB. Free memory was 100.8 MB in the beginning and 99.1 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.01 ms. Allocated memory is still 125.8 MB. Free memory was 99.1 MB in the beginning and 97.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 489.37 ms. Allocated memory is still 125.8 MB. Free memory was 97.5 MB in the beginning and 84.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 683.10 ms. Allocated memory is still 125.8 MB. Free memory was 84.5 MB in the beginning and 68.4 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Witness Printer took 4.05 ms. Allocated memory is still 125.8 MB. Free memory is still 68.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s 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, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s 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 [2021-10-29 05:06:32,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/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-b2eff8b [2021-10-29 05:06:35,633 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:06:35,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:06:35,701 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:06:35,702 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:06:35,707 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:06:35,710 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:06:35,715 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:06:35,720 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:06:35,732 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:06:35,733 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:06:35,736 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:06:35,737 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:06:35,740 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:06:35,743 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:06:35,749 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:06:35,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:06:35,755 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:06:35,757 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:06:35,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:06:35,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:06:35,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:06:35,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:06:35,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:06:35,788 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:06:35,791 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:06:35,791 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:06:35,794 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:06:35,795 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:06:35,796 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:06:35,796 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:06:35,798 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:06:35,800 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:06:35,801 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:06:35,803 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:06:35,803 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:06:35,804 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:06:35,805 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:06:35,805 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:06:35,807 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:06:35,808 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:06:35,812 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-29 05:06:35,874 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:06:35,874 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:06:35,876 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:06:35,876 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:06:35,877 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:06:35,877 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:06:35,877 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:06:35,877 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:06:35,878 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:06:35,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:06:35,881 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:06:35,882 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:06:35,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:06:35,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:06:35,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:06:35,883 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:06:35,883 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:06:35,883 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 05:06:35,883 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 05:06:35,884 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:06:35,884 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:06:35,884 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:06:35,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:06:35,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:06:35,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 05:06:35,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:06:35,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:06:35,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:06:35,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:06:35,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:06:35,887 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 05:06:35,887 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 05:06:35,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:06:35,888 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:06:35,888 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:06:35,888 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_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff5daa36c47d3acf04ff127d3f9a6e17688f7f254f16d34cb2769aec1ca052fe [2021-10-29 05:06:36,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:06:36,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:06:36,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:06:36,403 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:06:36,404 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:06:36,407 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound1.c [2021-10-29 05:06:36,520 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/data/38576ad5d/ce33ff3e04f543c8bbaaf9d867a7202b/FLAGc48a5e114 [2021-10-29 05:06:37,215 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:06:37,220 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound1.c [2021-10-29 05:06:37,231 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/data/38576ad5d/ce33ff3e04f543c8bbaaf9d867a7202b/FLAGc48a5e114 [2021-10-29 05:06:37,551 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/data/38576ad5d/ce33ff3e04f543c8bbaaf9d867a7202b [2021-10-29 05:06:37,554 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:06:37,556 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:06:37,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:06:37,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:06:37,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:06:37,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:06:37" (1/1) ... [2021-10-29 05:06:37,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d0c7ffa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:37, skipping insertion in model container [2021-10-29 05:06:37,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:06:37" (1/1) ... [2021-10-29 05:06:37,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:06:37,595 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:06:37,788 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_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound1.c[709,722] [2021-10-29 05:06:37,828 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:06:37,852 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:06:37,888 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_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound1.c[709,722] [2021-10-29 05:06:37,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:06:37,951 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:06:37,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:37 WrapperNode [2021-10-29 05:06:37,952 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:06:37,954 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:06:37,954 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:06:37,954 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:06:37,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:37" (1/1) ... [2021-10-29 05:06:37,973 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:37" (1/1) ... [2021-10-29 05:06:37,999 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:06:38,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:06:38,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:06:38,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:06:38,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:37" (1/1) ... [2021-10-29 05:06:38,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:37" (1/1) ... [2021-10-29 05:06:38,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:37" (1/1) ... [2021-10-29 05:06:38,016 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:37" (1/1) ... [2021-10-29 05:06:38,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:37" (1/1) ... [2021-10-29 05:06:38,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:37" (1/1) ... [2021-10-29 05:06:38,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:37" (1/1) ... [2021-10-29 05:06:38,040 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:06:38,041 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:06:38,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:06:38,042 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:06:38,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:37" (1/1) ... [2021-10-29 05:06:38,052 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:06:38,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:06:38,097 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:06:38,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:06:38,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 05:06:38,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:06:38,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:06:38,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:06:51,177 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:06:51,178 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-10-29 05:06:51,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:06:51 BoogieIcfgContainer [2021-10-29 05:06:51,181 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:06:51,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:06:51,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:06:51,207 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:06:51,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:06:37" (1/3) ... [2021-10-29 05:06:51,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e8b13cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:06:51, skipping insertion in model container [2021-10-29 05:06:51,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:37" (2/3) ... [2021-10-29 05:06:51,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e8b13cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:06:51, skipping insertion in model container [2021-10-29 05:06:51,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:06:51" (3/3) ... [2021-10-29 05:06:51,211 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound1.c [2021-10-29 05:06:51,218 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:06:51,219 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-29 05:06:51,277 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:06:51,284 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 [2021-10-29 05:06:51,284 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-29 05:06:51,300 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) [2021-10-29 05:06:51,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-29 05:06:51,306 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:06:51,307 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:06:51,308 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)] === [2021-10-29 05:06:51,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:06:51,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-10-29 05:06:51,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:06:51,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1112628865] [2021-10-29 05:06:51,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:06:51,338 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:06:51,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:06:51,346 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:06:51,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 05:06:51,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:06:51,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-29 05:06:51,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:06:51,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:06:51,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:06:51,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:06:51,704 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:06:51,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1112628865] [2021-10-29 05:06:51,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1112628865] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:06:51,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:06:51,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 05:06:51,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600796425] [2021-10-29 05:06:51,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 05:06:51,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:06:51,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 05:06:51,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:06:51,734 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) [2021-10-29 05:06:51,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:06:51,754 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2021-10-29 05:06:51,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 05:06:51,756 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 [2021-10-29 05:06:51,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:06:51,765 INFO L225 Difference]: With dead ends: 63 [2021-10-29 05:06:51,766 INFO L226 Difference]: Without dead ends: 29 [2021-10-29 05:06:51,769 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:06:51,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-29 05:06:51,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-29 05:06:51,801 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) [2021-10-29 05:06:51,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-10-29 05:06:51,804 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2021-10-29 05:06:51,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:06:51,804 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-10-29 05:06:51,805 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) [2021-10-29 05:06:51,805 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-10-29 05:06:51,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-29 05:06:51,805 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:06:51,806 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:06:51,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:06:52,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:06:52,023 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)] === [2021-10-29 05:06:52,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:06:52,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-10-29 05:06:52,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:06:52,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [114954030] [2021-10-29 05:06:52,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:06:52,026 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:06:52,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:06:52,027 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:06:52,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 05:06:52,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:06:52,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 05:06:52,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:06:52,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:06:52,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:06:58,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:06:58,595 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:06:58,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [114954030] [2021-10-29 05:06:58,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [114954030] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:06:58,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:06:58,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-29 05:06:58,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896775829] [2021-10-29 05:06:58,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 05:06:58,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:06:58,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 05:06:58,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:06:58,600 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) [2021-10-29 05:07:30,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:07:30,332 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2021-10-29 05:07:30,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:07:30,333 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 [2021-10-29 05:07:30,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:07:30,334 INFO L225 Difference]: With dead ends: 34 [2021-10-29 05:07:30,335 INFO L226 Difference]: Without dead ends: 32 [2021-10-29 05:07:30,336 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:07:30,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-29 05:07:30,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2021-10-29 05:07:30,342 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) [2021-10-29 05:07:30,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2021-10-29 05:07:30,343 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 7 [2021-10-29 05:07:30,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:07:30,344 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2021-10-29 05:07:30,344 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) [2021-10-29 05:07:30,344 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2021-10-29 05:07:30,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 05:07:30,345 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:07:30,345 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:07:30,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-29 05:07:30,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:07:30,546 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)] === [2021-10-29 05:07:30,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:07:30,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2021-10-29 05:07:30,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:07:30,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [191887773] [2021-10-29 05:07:30,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:07:30,548 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:07:30,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:07:30,551 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:07:30,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-29 05:07:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:07:31,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-29 05:07:31,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:07:33,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:07:33,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:07:40,475 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 [2021-10-29 05:08:09,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:08:09,168 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:08:09,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [191887773] [2021-10-29 05:08:09,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [191887773] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:08:09,169 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:08:09,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-29 05:08:09,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321385536] [2021-10-29 05:08:09,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-29 05:08:09,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:08:09,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-29 05:08:09,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=63, Unknown=1, NotChecked=16, Total=110 [2021-10-29 05:08:09,172 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) [2021-10-29 05:08:13,468 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (fp.geq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (.cse0 (fp.leq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))))) (and (or (and (or (not .cse0) (not .cse1)) (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32))) (and .cse1 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) .cse0)) (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) .cse1 (= 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))) .cse0 (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-29 05:08:16,791 WARN L860 $PredicateComparison]: unable to prove that (and (= 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))) (fp.leq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-29 05:08:58,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:08:58,835 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2021-10-29 05:08:58,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-29 05:08:58,835 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 [2021-10-29 05:08:58,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:08:58,837 INFO L225 Difference]: With dead ends: 36 [2021-10-29 05:08:58,837 INFO L226 Difference]: Without dead ends: 34 [2021-10-29 05:08:58,838 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 26.8s TimeCoverageRelationStatistics Valid=41, Invalid=78, Unknown=3, NotChecked=60, Total=182 [2021-10-29 05:08:58,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-29 05:08:58,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2021-10-29 05:08:58,844 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) [2021-10-29 05:08:58,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2021-10-29 05:08:58,845 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 9 [2021-10-29 05:08:58,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:08:58,846 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2021-10-29 05:08:58,846 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) [2021-10-29 05:08:58,846 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2021-10-29 05:08:58,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 05:08:58,847 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:08:58,847 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:08:58,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-29 05:08:59,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:08:59,048 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)] === [2021-10-29 05:08:59,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:08:59,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2021-10-29 05:08:59,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:08:59,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1304013905] [2021-10-29 05:08:59,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:08:59,050 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:08:59,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:08:59,052 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:08:59,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-29 05:09:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:09:01,266 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:09:04,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:09:04,211 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-29 05:09:04,211 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:09:04,213 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:09:04,215 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:09:04,215 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:09:04,216 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:09:04,216 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:09:04,216 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:09:04,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-29 05:09:04,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:09:04,421 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-10-29 05:09:04,424 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:09:04,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:09:04 BoogieIcfgContainer [2021-10-29 05:09:04,456 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:09:04,457 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:09:04,457 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:09:04,457 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:09:04,458 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:06:51" (3/4) ... [2021-10-29 05:09:04,460 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 05:09:04,515 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:09:04,517 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:09:04,519 INFO L168 Benchmark]: Toolchain (without parser) took 146962.07 ms. Allocated memory was 52.4 MB in the beginning and 71.3 MB in the end (delta: 18.9 MB). Free memory was 28.9 MB in the beginning and 39.5 MB in the end (delta: -10.6 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. [2021-10-29 05:09:04,520 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 52.4 MB. Free memory was 33.3 MB in the beginning and 33.3 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:09:04,524 INFO L168 Benchmark]: CACSL2BoogieTranslator took 394.66 ms. Allocated memory was 52.4 MB in the beginning and 71.3 MB in the end (delta: 18.9 MB). Free memory was 28.7 MB in the beginning and 53.4 MB in the end (delta: -24.7 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:09:04,529 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.51 ms. Allocated memory is still 71.3 MB. Free memory was 53.4 MB in the beginning and 51.6 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:09:04,529 INFO L168 Benchmark]: Boogie Preprocessor took 40.39 ms. Allocated memory is still 71.3 MB. Free memory was 51.6 MB in the beginning and 50.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:09:04,533 INFO L168 Benchmark]: RCFGBuilder took 13139.66 ms. Allocated memory is still 71.3 MB. Free memory was 50.1 MB in the beginning and 38.9 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:09:04,533 INFO L168 Benchmark]: TraceAbstraction took 133257.50 ms. Allocated memory is still 71.3 MB. Free memory was 53.5 MB in the beginning and 41.2 MB in the end (delta: 12.3 MB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:09:04,534 INFO L168 Benchmark]: Witness Printer took 60.85 ms. Allocated memory is still 71.3 MB. Free memory was 41.2 MB in the beginning and 39.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:09:04,537 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 52.4 MB. Free memory was 33.3 MB in the beginning and 33.3 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 394.66 ms. Allocated memory was 52.4 MB in the beginning and 71.3 MB in the end (delta: 18.9 MB). Free memory was 28.7 MB in the beginning and 53.4 MB in the end (delta: -24.7 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.51 ms. Allocated memory is still 71.3 MB. Free memory was 53.4 MB in the beginning and 51.6 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.39 ms. Allocated memory is still 71.3 MB. Free memory was 51.6 MB in the beginning and 50.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 13139.66 ms. Allocated memory is still 71.3 MB. Free memory was 50.1 MB in the beginning and 38.9 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 133257.50 ms. Allocated memory is still 71.3 MB. Free memory was 53.5 MB in the beginning and 41.2 MB in the end (delta: 12.3 MB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. * Witness Printer took 60.85 ms. Allocated memory is still 71.3 MB. Free memory was 41.2 MB in the beginning and 39.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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: 133.1s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 81.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 83 SDtfs, 19 SDslu, 110 SDs, 0 SdLazy, 76 SolverSat, 10 SolverUnsat, 29 SolverUnknown, 0 SolverNotchecked, 73.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 32.2s Time, 0.0s 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, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 3.1s SatisfiabilityAnalysisTime, 44.4s 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! [2021-10-29 05:09:04,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7f48c3-1e0d-401a-8d9f-df1a14ca2b15/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...