./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8 --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 526c1eaba1ce68b31ca010072f1cb0b80f604635 .............................................................................................................................................................................................................................................................................................................................. 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_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8 --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 526c1eaba1ce68b31ca010072f1cb0b80f604635 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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-4e77c04 [2021-10-13 07:12:18,476 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:12:18,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:12:18,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:12:18,527 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:12:18,528 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:12:18,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:12:18,533 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:12:18,536 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:12:18,537 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:12:18,539 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:12:18,541 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:12:18,541 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:12:18,543 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:12:18,545 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:12:18,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:12:18,549 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:12:18,550 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:12:18,554 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:12:18,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:12:18,560 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:12:18,562 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:12:18,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:12:18,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:12:18,578 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:12:18,581 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:12:18,582 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:12:18,585 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:12:18,587 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:12:18,589 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:12:18,591 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:12:18,592 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:12:18,596 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:12:18,599 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:12:18,601 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:12:18,606 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:12:18,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:12:18,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:12:18,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:12:18,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:12:18,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:12:18,612 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:12:18,667 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:12:18,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:12:18,672 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:12:18,672 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:12:18,672 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:12:18,673 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:12:18,673 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:12:18,673 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:12:18,673 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:12:18,674 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:12:18,675 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:12:18,675 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:12:18,676 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:12:18,676 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:12:18,676 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:12:18,677 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:12:18,678 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:12:18,678 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:12:18,678 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:12:18,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:12:18,679 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:12:18,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:12:18,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:12:18,680 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:12:18,680 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:12:18,680 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:12:18,681 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:12:18,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:12:18,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:12:18,684 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:12:18,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:12:18,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:12:18,685 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:12:18,685 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:12:18,686 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:12:18,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:12:18,686 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:12:18,686 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:12:18,687 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:12:18,687 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_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 526c1eaba1ce68b31ca010072f1cb0b80f604635 [2021-10-13 07:12:19,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:12:19,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:12:19,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:12:19,059 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:12:19,060 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:12:19,061 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound1.c [2021-10-13 07:12:19,147 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/data/bba8e58c8/e6f5ce0bab1f4cf59a8ff91c45f77c3b/FLAG254b606c1 [2021-10-13 07:12:19,683 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:12:19,683 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound1.c [2021-10-13 07:12:19,692 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/data/bba8e58c8/e6f5ce0bab1f4cf59a8ff91c45f77c3b/FLAG254b606c1 [2021-10-13 07:12:20,010 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/data/bba8e58c8/e6f5ce0bab1f4cf59a8ff91c45f77c3b [2021-10-13 07:12:20,013 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:12:20,015 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:12:20,018 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:12:20,018 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:12:20,022 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:12:20,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:12:20" (1/1) ... [2021-10-13 07:12:20,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@587787b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:20, skipping insertion in model container [2021-10-13 07:12:20,025 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:12:20" (1/1) ... [2021-10-13 07:12:20,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:12:20,071 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:12:20,270 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_72b3ff41-1578-40fe-b568-f1d564957480/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound1.c[709,722] [2021-10-13 07:12:20,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:12:20,307 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:12:20,323 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound1.c[709,722] [2021-10-13 07:12:20,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:12:20,354 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:12:20,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:20 WrapperNode [2021-10-13 07:12:20,355 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:12:20,356 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:12:20,357 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:12:20,357 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:12:20,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:20" (1/1) ... [2021-10-13 07:12:20,376 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:20" (1/1) ... [2021-10-13 07:12:20,403 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:12:20,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:12:20,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:12:20,404 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:12:20,414 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:20" (1/1) ... [2021-10-13 07:12:20,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:20" (1/1) ... [2021-10-13 07:12:20,417 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:20" (1/1) ... [2021-10-13 07:12:20,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:20" (1/1) ... [2021-10-13 07:12:20,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:20" (1/1) ... [2021-10-13 07:12:20,429 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:20" (1/1) ... [2021-10-13 07:12:20,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:20" (1/1) ... [2021-10-13 07:12:20,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:12:20,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:12:20,436 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:12:20,436 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:12:20,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:20" (1/1) ... [2021-10-13 07:12:20,447 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:12:20,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:12:20,478 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:12:20,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:12:20,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:12:20,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:12:20,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:12:20,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:12:20,776 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:12:20,777 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-10-13 07:12:20,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:12:20 BoogieIcfgContainer [2021-10-13 07:12:20,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:12:20,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:12:20,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:12:20,787 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:12:20,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:12:20" (1/3) ... [2021-10-13 07:12:20,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd6df54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:12:20, skipping insertion in model container [2021-10-13 07:12:20,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:20" (2/3) ... [2021-10-13 07:12:20,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd6df54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:12:20, skipping insertion in model container [2021-10-13 07:12:20,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:12:20" (3/3) ... [2021-10-13 07:12:20,791 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound1.c [2021-10-13 07:12:20,798 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:12:20,798 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-13 07:12:20,856 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:12:20,864 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, mConcurrency=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 [2021-10-13 07:12:20,864 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-13 07:12:20,899 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 28 states have internal predecessors, (37), 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) [2021-10-13 07:12:20,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 07:12:20,911 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:12:20,912 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 07:12:20,913 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:12:20,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:12:20,932 INFO L82 PathProgramCache]: Analyzing trace with hash 114241630, now seen corresponding path program 1 times [2021-10-13 07:12:20,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:12:20,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995025774] [2021-10-13 07:12:20,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:12:20,960 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:12:21,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:12:21,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:12:21,149 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:12:21,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995025774] [2021-10-13 07:12:21,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995025774] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:12:21,151 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:12:21,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:12:21,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373791002] [2021-10-13 07:12:21,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:12:21,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:12:21,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:12:21,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:12:21,180 INFO L87 Difference]: Start difference. First operand has 29 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 28 states have internal predecessors, (37), 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 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-10-13 07:12:21,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:12:21,207 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2021-10-13 07:12:21,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:12:21,209 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2021-10-13 07:12:21,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:12:21,219 INFO L225 Difference]: With dead ends: 57 [2021-10-13 07:12:21,220 INFO L226 Difference]: Without dead ends: 27 [2021-10-13 07:12:21,223 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:12:21,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-13 07:12:21,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-10-13 07:12:21,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 26 states have internal predecessors, (28), 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) [2021-10-13 07:12:21,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-10-13 07:12:21,269 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 5 [2021-10-13 07:12:21,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:12:21,269 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-10-13 07:12:21,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-10-13 07:12:21,270 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-10-13 07:12:21,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 07:12:21,270 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:12:21,271 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 07:12:21,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:12:21,272 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)] === [2021-10-13 07:12:21,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:12:21,273 INFO L82 PathProgramCache]: Analyzing trace with hash 112890113, now seen corresponding path program 1 times [2021-10-13 07:12:21,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:12:21,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938008732] [2021-10-13 07:12:21,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:12:21,275 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:12:21,295 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 07:12:21,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1536100355] [2021-10-13 07:12:21,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:12:21,296 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:12:21,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:12:21,299 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:12:21,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:12:21,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:12:21,378 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:12:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:12:21,427 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-13 07:12:21,427 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:12:21,429 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:12:21,431 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:12:21,431 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:12:21,431 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:12:21,431 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:12:21,432 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:12:21,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:12:21,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:12:21,654 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:12:21,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:12:21 BoogieIcfgContainer [2021-10-13 07:12:21,679 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:12:21,680 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:12:21,680 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:12:21,680 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:12:21,681 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:12:20" (3/4) ... [2021-10-13 07:12:21,684 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 07:12:21,685 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:12:21,687 INFO L168 Benchmark]: Toolchain (without parser) took 1671.12 ms. Allocated memory was 79.7 MB in the beginning and 109.1 MB in the end (delta: 29.4 MB). Free memory was 43.0 MB in the beginning and 70.9 MB in the end (delta: -27.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:12:21,688 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 79.7 MB. Free memory was 59.3 MB in the beginning and 59.2 MB in the end (delta: 41.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:12:21,689 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.57 ms. Allocated memory was 79.7 MB in the beginning and 109.1 MB in the end (delta: 29.4 MB). Free memory was 42.8 MB in the beginning and 84.0 MB in the end (delta: -41.2 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:12:21,690 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.84 ms. Allocated memory is still 109.1 MB. Free memory was 83.8 MB in the beginning and 82.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:12:21,691 INFO L168 Benchmark]: Boogie Preprocessor took 30.43 ms. Allocated memory is still 109.1 MB. Free memory was 82.2 MB in the beginning and 81.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:12:21,692 INFO L168 Benchmark]: RCFGBuilder took 344.93 ms. Allocated memory is still 109.1 MB. Free memory was 80.8 MB in the beginning and 70.0 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:12:21,693 INFO L168 Benchmark]: TraceAbstraction took 896.66 ms. Allocated memory is still 109.1 MB. Free memory was 69.4 MB in the beginning and 71.4 MB in the end (delta: -2.1 MB). Peak memory consumption was 114.7 kB. Max. memory is 16.1 GB. [2021-10-13 07:12:21,693 INFO L168 Benchmark]: Witness Printer took 5.05 ms. Allocated memory is still 109.1 MB. Free memory was 71.4 MB in the beginning and 70.9 MB in the end (delta: 529.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:12:21,699 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 79.7 MB. Free memory was 59.3 MB in the beginning and 59.2 MB in the end (delta: 41.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 337.57 ms. Allocated memory was 79.7 MB in the beginning and 109.1 MB in the end (delta: 29.4 MB). Free memory was 42.8 MB in the beginning and 84.0 MB in the end (delta: -41.2 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.84 ms. Allocated memory is still 109.1 MB. Free memory was 83.8 MB in the beginning and 82.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.43 ms. Allocated memory is still 109.1 MB. Free memory was 82.2 MB in the beginning and 81.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 344.93 ms. Allocated memory is still 109.1 MB. Free memory was 80.8 MB in the beginning and 70.0 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 896.66 ms. Allocated memory is still 109.1 MB. Free memory was 69.4 MB in the beginning and 71.4 MB in the end (delta: -2.1 MB). Peak memory consumption was 114.7 kB. Max. memory is 16.1 GB. * Witness Printer took 5.05 ms. Allocated memory is still 109.1 MB. Free memory was 71.4 MB in the beginning and 70.9 MB in the end (delta: 529.0 kB). 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 34. Possible FailurePath: [L24] int counter = 0; [L26] int r; [L27] double a, x, s; [L28] a = __VERIFIER_nondet_double() [L29] x = a [L30] s = 3.25 [L31] r = 1 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<1 [L17] COND TRUE !(cond) VAL [counter=1] [L19] reach_error() VAL [counter=1] - 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, 29 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 798.6ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 34.1ms, AutomataDifference: 62.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 30 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 26.6ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 15.2ms SsaConstructionTime, 56.9ms SatisfiabilityAnalysisTime, 68.7ms InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 4 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2021-10-13 07:12:21,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/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-4e77c04 [2021-10-13 07:12:24,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:12:24,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:12:24,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:12:24,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:12:24,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:12:24,575 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:12:24,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:12:24,580 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:12:24,582 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:12:24,583 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:12:24,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:12:24,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:12:24,587 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:12:24,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:12:24,595 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:12:24,598 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:12:24,600 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:12:24,618 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:12:24,621 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:12:24,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:12:24,625 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:12:24,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:12:24,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:12:24,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:12:24,633 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:12:24,634 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:12:24,635 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:12:24,636 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:12:24,637 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:12:24,638 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:12:24,639 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:12:24,640 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:12:24,642 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:12:24,643 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:12:24,644 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:12:24,645 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:12:24,646 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:12:24,646 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:12:24,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:12:24,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:12:24,650 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:12:24,682 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:12:24,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:12:24,688 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:12:24,689 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:12:24,689 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:12:24,689 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:12:24,690 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:12:24,690 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:12:24,690 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:12:24,692 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:12:24,693 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:12:24,694 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:12:24,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:12:24,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:12:24,695 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:12:24,695 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:12:24,695 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:12:24,696 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:12:24,696 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:12:24,696 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:12:24,696 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:12:24,697 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:12:24,697 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:12:24,697 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:12:24,698 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:12:24,698 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:12:24,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:12:24,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:12:24,699 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:12:24,699 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:12:24,700 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:12:24,700 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:12:24,701 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:12:24,701 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:12:24,701 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:12:24,702 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_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 526c1eaba1ce68b31ca010072f1cb0b80f604635 [2021-10-13 07:12:25,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:12:25,192 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:12:25,196 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:12:25,198 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:12:25,199 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:12:25,200 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound1.c [2021-10-13 07:12:25,289 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/data/32afc3e44/add2134579b3436abdd471db2b535380/FLAG045458575 [2021-10-13 07:12:25,988 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:12:25,993 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound1.c [2021-10-13 07:12:26,002 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/data/32afc3e44/add2134579b3436abdd471db2b535380/FLAG045458575 [2021-10-13 07:12:26,308 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/data/32afc3e44/add2134579b3436abdd471db2b535380 [2021-10-13 07:12:26,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:12:26,320 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:12:26,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:12:26,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:12:26,330 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:12:26,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:12:26" (1/1) ... [2021-10-13 07:12:26,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a293166 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:26, skipping insertion in model container [2021-10-13 07:12:26,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:12:26" (1/1) ... [2021-10-13 07:12:26,343 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:12:26,365 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:12:26,600 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_72b3ff41-1578-40fe-b568-f1d564957480/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound1.c[709,722] [2021-10-13 07:12:26,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:12:26,686 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:12:26,729 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_72b3ff41-1578-40fe-b568-f1d564957480/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound1.c[709,722] [2021-10-13 07:12:26,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:12:26,809 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:12:26,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:26 WrapperNode [2021-10-13 07:12:26,810 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:12:26,811 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:12:26,813 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:12:26,813 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:12:26,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:26" (1/1) ... [2021-10-13 07:12:26,848 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:26" (1/1) ... [2021-10-13 07:12:26,887 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:12:26,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:12:26,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:12:26,888 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:12:26,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:26" (1/1) ... [2021-10-13 07:12:26,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:26" (1/1) ... [2021-10-13 07:12:26,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:26" (1/1) ... [2021-10-13 07:12:26,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:26" (1/1) ... [2021-10-13 07:12:26,925 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:26" (1/1) ... [2021-10-13 07:12:26,940 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:26" (1/1) ... [2021-10-13 07:12:26,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:26" (1/1) ... [2021-10-13 07:12:26,953 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:12:26,954 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:12:26,954 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:12:26,954 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:12:26,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:26" (1/1) ... [2021-10-13 07:12:26,963 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:12:26,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:12:26,997 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:12:27,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:12:27,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:12:27,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:12:27,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:12:27,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:12:38,536 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:12:38,537 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-10-13 07:12:38,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:12:38 BoogieIcfgContainer [2021-10-13 07:12:38,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:12:38,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:12:38,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:12:38,564 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:12:38,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:12:26" (1/3) ... [2021-10-13 07:12:38,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5638c676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:12:38, skipping insertion in model container [2021-10-13 07:12:38,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:26" (2/3) ... [2021-10-13 07:12:38,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5638c676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:12:38, skipping insertion in model container [2021-10-13 07:12:38,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:12:38" (3/3) ... [2021-10-13 07:12:38,567 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound1.c [2021-10-13 07:12:38,572 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:12:38,572 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-13 07:12:38,663 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:12:38,672 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, mConcurrency=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 [2021-10-13 07:12:38,673 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-13 07:12:38,690 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 25 states have (on average 1.6) internal successors, (40), 31 states have internal predecessors, (40), 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) [2021-10-13 07:12:38,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:12:38,696 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:12:38,708 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:12:38,709 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:12:38,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:12:38,723 INFO L82 PathProgramCache]: Analyzing trace with hash 890922791, now seen corresponding path program 1 times [2021-10-13 07:12:38,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:12:38,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [121054933] [2021-10-13 07:12:38,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:12:38,751 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:12:38,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:12:38,755 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:12:38,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:12:39,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:12:39,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 07:12:39,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:12:39,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:12:39,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:12:39,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:12:39,189 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:12:39,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [121054933] [2021-10-13 07:12:39,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [121054933] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:12:39,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:12:39,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 07:12:39,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175710415] [2021-10-13 07:12:39,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:12:39,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:12:39,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:12:39,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:12:39,226 INFO L87 Difference]: Start difference. First operand has 32 states, 25 states have (on average 1.6) internal successors, (40), 31 states have internal predecessors, (40), 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 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:12:39,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:12:39,250 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2021-10-13 07:12:39,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:12:39,251 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 07:12:39,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:12:39,262 INFO L225 Difference]: With dead ends: 62 [2021-10-13 07:12:39,262 INFO L226 Difference]: Without dead ends: 28 [2021-10-13 07:12:39,266 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:12:39,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-13 07:12:39,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-13 07:12:39,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 27 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) [2021-10-13 07:12:39,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2021-10-13 07:12:39,312 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2021-10-13 07:12:39,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:12:39,313 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2021-10-13 07:12:39,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:12:39,313 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2021-10-13 07:12:39,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:12:39,314 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:12:39,314 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:12:39,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:12:39,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:12:39,538 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)] === [2021-10-13 07:12:39,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:12:39,539 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-10-13 07:12:39,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:12:39,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2078030084] [2021-10-13 07:12:39,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:12:39,541 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:12:39,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:12:39,549 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:12:39,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:12:39,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:12:39,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:12:39,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:12:40,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:12:40,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:12:47,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:12:47,405 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:12:47,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2078030084] [2021-10-13 07:12:47,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2078030084] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:12:47,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:12:47,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-13 07:12:47,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980650068] [2021-10-13 07:12:47,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:12:47,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:12:47,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:12:47,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:12:47,410 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:13:07,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:13:07,433 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-10-13 07:13:07,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:13:07,434 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 07:13:07,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:13:07,444 INFO L225 Difference]: With dead ends: 39 [2021-10-13 07:13:07,444 INFO L226 Difference]: Without dead ends: 35 [2021-10-13 07:13:07,445 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 5468.5ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:13:07,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-13 07:13:07,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2021-10-13 07:13:07,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 32 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) [2021-10-13 07:13:07,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2021-10-13 07:13:07,458 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 6 [2021-10-13 07:13:07,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:13:07,458 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2021-10-13 07:13:07,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:13:07,460 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2021-10-13 07:13:07,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 07:13:07,461 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:13:07,462 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:13:07,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:13:07,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:13:07,676 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)] === [2021-10-13 07:13:07,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:13:07,677 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2021-10-13 07:13:07,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:13:07,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1363324604] [2021-10-13 07:13:07,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:13:07,679 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:13:07,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:13:07,682 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:13:07,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:13:09,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:13:09,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:13:09,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:13:11,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:13:11,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:13:17,515 WARN L838 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) is different from false [2021-10-13 07:13:19,561 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 [2021-10-13 07:13:43,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:13:43,437 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:13:43,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1363324604] [2021-10-13 07:13:43,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1363324604] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:13:43,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:13:43,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-10-13 07:13:43,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445456158] [2021-10-13 07:13:43,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 07:13:43,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:13:43,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 07:13:43,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=29, Unknown=3, NotChecked=10, Total=56 [2021-10-13 07:13:43,441 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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) [2021-10-13 07:13:57,773 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) (= c_currentRoundingMode roundNearestTiesToEven) (forall ((v_ULTIMATE.start_main_~a~0_11 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (let ((.cse1 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)) v_ULTIMATE.start_main_~a~0_11))) (fp.sub c_currentRoundingMode .cse1 .cse1))) (_ bv0 32)))) is different from true [2021-10-13 07:14:16,404 WARN L207 SmtUtils]: Spent 8.52 s on a formula simplification that was a NOOP. DAG size: 27 [2021-10-13 07:14:25,036 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (or (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-13 07:15:15,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:15:15,481 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2021-10-13 07:15:15,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 07:15:15,481 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 07:15:15,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:15:15,482 INFO L225 Difference]: With dead ends: 38 [2021-10-13 07:15:15,482 INFO L226 Difference]: Without dead ends: 35 [2021-10-13 07:15:15,484 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 53189.9ms TimeCoverageRelationStatistics Valid=43, Invalid=95, Unknown=6, NotChecked=66, Total=210 [2021-10-13 07:15:15,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-13 07:15:15,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2021-10-13 07:15:15,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 30 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) [2021-10-13 07:15:15,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2021-10-13 07:15:15,491 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 8 [2021-10-13 07:15:15,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:15:15,492 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2021-10-13 07:15:15,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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) [2021-10-13 07:15:15,492 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2021-10-13 07:15:15,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 07:15:15,493 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:15:15,493 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:15:15,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:15:15,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:15:15,717 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:15:15,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:15:15,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1248817364, now seen corresponding path program 1 times [2021-10-13 07:15:15,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:15:15,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [896267049] [2021-10-13 07:15:15,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:15:15,719 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:15:15,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:15:15,720 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:15:15,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 07:15:16,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:15:16,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:15:16,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:15:16,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:15:16,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:15:16,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:15:16,388 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:15:16,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [896267049] [2021-10-13 07:15:16,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [896267049] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:15:16,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:15:16,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-13 07:15:16,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728597670] [2021-10-13 07:15:16,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:15:16,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:15:16,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:15:16,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:15:16,391 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 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) [2021-10-13 07:15:17,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:15:17,203 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2021-10-13 07:15:17,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:15:17,204 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 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 9 [2021-10-13 07:15:17,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:15:17,205 INFO L225 Difference]: With dead ends: 39 [2021-10-13 07:15:17,206 INFO L226 Difference]: Without dead ends: 29 [2021-10-13 07:15:17,206 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 131.1ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:15:17,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-13 07:15:17,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-13 07:15:17,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.25) internal successors, (30), 28 states have internal predecessors, (30), 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) [2021-10-13 07:15:17,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-10-13 07:15:17,225 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 9 [2021-10-13 07:15:17,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:15:17,226 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-10-13 07:15:17,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 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) [2021-10-13 07:15:17,227 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-10-13 07:15:17,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 07:15:17,227 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:15:17,227 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:15:17,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 07:15:17,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:15:17,447 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:15:17,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:15:17,447 INFO L82 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2021-10-13 07:15:17,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:15:17,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [396785473] [2021-10-13 07:15:17,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:15:17,448 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:15:17,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:15:17,450 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:15:17,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 07:15:18,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:15:18,842 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:15:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:15:21,954 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-13 07:15:21,954 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:15:21,955 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:15:21,957 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:15:21,957 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:15:21,957 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:15:21,958 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:15:21,958 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:15:22,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:15:22,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:15:22,163 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:15:22,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:15:22 BoogieIcfgContainer [2021-10-13 07:15:22,185 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:15:22,186 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:15:22,186 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:15:22,186 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:15:22,187 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:12:38" (3/4) ... [2021-10-13 07:15:22,189 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 07:15:22,227 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:15:22,227 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:15:22,229 INFO L168 Benchmark]: Toolchain (without parser) took 175907.78 ms. Allocated memory was 73.4 MB in the beginning and 98.6 MB in the end (delta: 25.2 MB). Free memory was 55.3 MB in the beginning and 70.1 MB in the end (delta: -14.8 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:15:22,229 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 73.4 MB. Free memory was 53.5 MB in the beginning and 53.5 MB in the end (delta: 54.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:15:22,230 INFO L168 Benchmark]: CACSL2BoogieTranslator took 485.36 ms. Allocated memory is still 73.4 MB. Free memory was 55.1 MB in the beginning and 54.7 MB in the end (delta: 419.6 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:15:22,231 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.80 ms. Allocated memory is still 73.4 MB. Free memory was 54.7 MB in the beginning and 52.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:15:22,231 INFO L168 Benchmark]: Boogie Preprocessor took 65.22 ms. Allocated memory is still 73.4 MB. Free memory was 52.9 MB in the beginning and 51.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:15:22,232 INFO L168 Benchmark]: RCFGBuilder took 11584.93 ms. Allocated memory is still 73.4 MB. Free memory was 51.5 MB in the beginning and 40.3 MB in the end (delta: 11.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:15:22,232 INFO L168 Benchmark]: TraceAbstraction took 163645.19 ms. Allocated memory was 73.4 MB in the beginning and 98.6 MB in the end (delta: 25.2 MB). Free memory was 39.8 MB in the beginning and 72.2 MB in the end (delta: -32.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:15:22,233 INFO L168 Benchmark]: Witness Printer took 41.42 ms. Allocated memory is still 98.6 MB. Free memory was 71.6 MB in the beginning and 70.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:15:22,236 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 73.4 MB. Free memory was 53.5 MB in the beginning and 53.5 MB in the end (delta: 54.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 485.36 ms. Allocated memory is still 73.4 MB. Free memory was 55.1 MB in the beginning and 54.7 MB in the end (delta: 419.6 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 75.80 ms. Allocated memory is still 73.4 MB. Free memory was 54.7 MB in the beginning and 52.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 65.22 ms. Allocated memory is still 73.4 MB. Free memory was 52.9 MB in the beginning and 51.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 11584.93 ms. Allocated memory is still 73.4 MB. Free memory was 51.5 MB in the beginning and 40.3 MB in the end (delta: 11.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 163645.19 ms. Allocated memory was 73.4 MB in the beginning and 98.6 MB in the end (delta: 25.2 MB). Free memory was 39.8 MB in the beginning and 72.2 MB in the end (delta: -32.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 41.42 ms. Allocated memory is still 98.6 MB. Free memory was 71.6 MB in the beginning and 70.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x, s; [L28] a = __VERIFIER_nondet_double() [L29] x = a [L30] s = 3.25 [L31] r = 1 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<1 [L17] COND FALSE !(!(cond)) VAL [counter=1] [L17] COND FALSE !(!(cond)) VAL [counter=1] [L17] COND TRUE !(cond) VAL [counter=1] [L19] reach_error() VAL [counter=1] - 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, 32 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 163500.8ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 14.0ms, AutomataDifference: 112961.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 104 SDtfs, 47 SDslu, 189 SDs, 0 SdLazy, 97 SolverSat, 22 SolverUnsat, 24 SolverUnknown, 0 SolverNotchecked, 73482.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 58789.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=2, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 66.3ms AutomataMinimizationTime, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 74.6ms SsaConstructionTime, 3445.6ms SatisfiabilityAnalysisTime, 42380.1ms InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 50 ConstructedInterpolants, 1 QuantifiedInterpolants, 320 SizeOfPredicates, 10 NumberOfNonLiveVariables, 140 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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! [2021-10-13 07:15:22,467 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-10-13 07:15:22,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72b3ff41-1578-40fe-b568-f1d564957480/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request...