./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs --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 2d0dd826da977145676f85980fecf0ec40390b47 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs --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 2d0dd826da977145676f85980fecf0ec40390b47 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:24:34,592 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:24:34,595 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:24:34,634 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:24:34,635 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:24:34,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:24:34,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:24:34,642 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:24:34,645 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:24:34,646 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:24:34,648 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:24:34,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:24:34,651 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:24:34,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:24:34,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:24:34,657 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:24:34,659 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:24:34,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:24:34,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:24:34,667 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:24:34,669 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:24:34,671 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:24:34,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:24:34,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:24:34,680 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:24:34,681 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:24:34,681 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:24:34,683 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:24:34,684 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:24:34,686 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:24:34,686 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:24:34,688 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:24:34,689 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:24:34,690 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:24:34,692 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:24:34,693 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:24:34,694 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:24:34,694 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:24:34,695 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:24:34,696 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:24:34,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:24:34,702 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:24:34,754 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:24:34,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:24:34,758 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:24:34,758 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:24:34,759 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:24:34,759 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:24:34,759 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:24:34,760 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:24:34,768 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:24:34,768 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:24:34,770 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:24:34,770 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:24:34,771 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:24:34,771 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:24:34,771 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:24:34,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:24:34,772 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:24:34,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:24:34,773 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:24:34,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:24:34,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:24:34,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:24:34,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:24:34,774 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:24:34,775 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:24:34,775 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:24:34,775 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:24:34,776 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:24:34,776 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:24:34,778 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:24:34,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:24:34,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:24:34,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:24:34,779 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:24:34,780 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:24:34,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:24:34,780 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:24:34,781 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:24:34,781 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:24:34,781 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_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d0dd826da977145676f85980fecf0ec40390b47 [2021-10-16 02:24:35,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:24:35,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:24:35,156 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:24:35,157 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:24:35,158 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:24:35,159 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound1.i [2021-10-16 02:24:35,239 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/data/39a136511/bf37edb0ca65494ea44edc33b360e93f/FLAG580a70e44 [2021-10-16 02:24:35,647 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:24:35,648 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound1.i [2021-10-16 02:24:35,654 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/data/39a136511/bf37edb0ca65494ea44edc33b360e93f/FLAG580a70e44 [2021-10-16 02:24:36,045 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/data/39a136511/bf37edb0ca65494ea44edc33b360e93f [2021-10-16 02:24:36,047 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:24:36,049 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:24:36,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:24:36,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:24:36,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:24:36,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:24:36" (1/1) ... [2021-10-16 02:24:36,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a778f64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:24:36, skipping insertion in model container [2021-10-16 02:24:36,067 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:24:36" (1/1) ... [2021-10-16 02:24:36,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:24:36,090 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:24:36,264 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_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound1.i[951,964] [2021-10-16 02:24:36,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:24:36,285 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:24:36,298 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_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound1.i[951,964] [2021-10-16 02:24:36,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:24:36,317 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:24:36,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:24:36 WrapperNode [2021-10-16 02:24:36,318 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:24:36,319 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:24:36,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:24:36,320 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:24:36,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:24:36" (1/1) ... [2021-10-16 02:24:36,334 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:24:36" (1/1) ... [2021-10-16 02:24:36,353 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:24:36,354 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:24:36,354 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:24:36,354 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:24:36,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:24:36" (1/1) ... [2021-10-16 02:24:36,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:24:36" (1/1) ... [2021-10-16 02:24:36,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:24:36" (1/1) ... [2021-10-16 02:24:36,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:24:36" (1/1) ... [2021-10-16 02:24:36,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:24:36" (1/1) ... [2021-10-16 02:24:36,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:24:36" (1/1) ... [2021-10-16 02:24:36,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:24:36" (1/1) ... [2021-10-16 02:24:36,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:24:36,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:24:36,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:24:36,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:24:36,379 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:24:36" (1/1) ... [2021-10-16 02:24:36,387 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:24:36,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:24:36,416 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:24:36,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:24:36,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:24:36,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:24:36,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:24:36,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:24:38,935 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:24:38,936 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-16 02:24:38,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:24:38 BoogieIcfgContainer [2021-10-16 02:24:38,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:24:38,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:24:38,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:24:38,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:24:38,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:24:36" (1/3) ... [2021-10-16 02:24:38,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@125ff711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:24:38, skipping insertion in model container [2021-10-16 02:24:38,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:24:36" (2/3) ... [2021-10-16 02:24:38,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@125ff711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:24:38, skipping insertion in model container [2021-10-16 02:24:38,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:24:38" (3/3) ... [2021-10-16 02:24:38,948 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin2_valuebound1.i [2021-10-16 02:24:38,953 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:24:38,953 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-16 02:24:39,001 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:24:39,007 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 [2021-10-16 02:24:39,008 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-16 02:24:39,023 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:24:39,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 02:24:39,028 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:24:39,028 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 02:24:39,029 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:24:39,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:24:39,035 INFO L82 PathProgramCache]: Analyzing trace with hash 104093823, now seen corresponding path program 1 times [2021-10-16 02:24:39,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:24:39,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385123844] [2021-10-16 02:24:39,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:24:39,047 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:24:39,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:24:39,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:24:39,191 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:24:39,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385123844] [2021-10-16 02:24:39,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385123844] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:24:39,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:24:39,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:24:39,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188203305] [2021-10-16 02:24:39,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:24:39,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:24:39,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:24:39,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:24:39,216 INFO L87 Difference]: Start difference. First operand has 14 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2021-10-16 02:24:39,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:24:39,231 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2021-10-16 02:24:39,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:24:39,232 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 [2021-10-16 02:24:39,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:24:39,241 INFO L225 Difference]: With dead ends: 25 [2021-10-16 02:24:39,241 INFO L226 Difference]: Without dead ends: 12 [2021-10-16 02:24:39,244 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 [2021-10-16 02:24:39,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-16 02:24:39,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-16 02:24:39,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.3) internal successors, (13), 11 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) [2021-10-16 02:24:39,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2021-10-16 02:24:39,275 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 5 [2021-10-16 02:24:39,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:24:39,276 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-10-16 02:24:39,276 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) [2021-10-16 02:24:39,276 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2021-10-16 02:24:39,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 02:24:39,277 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:24:39,277 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 02:24:39,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:24:39,278 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:24:39,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:24:39,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1128477837, now seen corresponding path program 1 times [2021-10-16 02:24:39,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:24:39,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143558376] [2021-10-16 02:24:39,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:24:39,280 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:24:39,299 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 02:24:39,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [640609] [2021-10-16 02:24:39,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:24:39,301 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:24:39,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:24:39,303 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:24:39,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 02:24:39,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:24:39,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 02:24:39,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:24:39,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:24:39,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:24:39,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:24:39,875 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:24:39,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143558376] [2021-10-16 02:24:39,876 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:24:39,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640609] [2021-10-16 02:24:39,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640609] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:24:39,877 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:24:39,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 02:24:39,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992300641] [2021-10-16 02:24:39,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 02:24:39,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:24:39,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 02:24:39,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:24:39,881 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:24:42,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:24:42,391 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2021-10-16 02:24:42,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 02:24:42,392 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-16 02:24:42,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:24:42,393 INFO L225 Difference]: With dead ends: 31 [2021-10-16 02:24:42,393 INFO L226 Difference]: Without dead ends: 23 [2021-10-16 02:24:42,394 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 169.6ms TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:24:42,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-16 02:24:42,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2021-10-16 02:24:42,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 18 states have internal predecessors, (22), 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) [2021-10-16 02:24:42,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2021-10-16 02:24:42,399 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 6 [2021-10-16 02:24:42,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:24:42,399 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2021-10-16 02:24:42,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:24:42,400 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2021-10-16 02:24:42,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 02:24:42,400 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:24:42,400 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:24:42,438 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-16 02:24:42,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:24:42,627 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:24:42,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:24:42,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1768313588, now seen corresponding path program 1 times [2021-10-16 02:24:42,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:24:42,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041580437] [2021-10-16 02:24:42,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:24:42,629 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:24:42,645 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 02:24:42,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1464533439] [2021-10-16 02:24:42,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:24:42,646 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:24:42,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:24:42,650 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:24:42,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-16 02:24:42,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:24:42,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:24:42,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:24:42,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:24:42,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:24:42,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:24:42,898 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:24:42,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041580437] [2021-10-16 02:24:42,898 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:24:42,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464533439] [2021-10-16 02:24:42,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464533439] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:24:42,899 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:24:42,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-16 02:24:42,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071590683] [2021-10-16 02:24:42,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:24:42,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:24:42,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:24:42,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:24:42,902 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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) [2021-10-16 02:24:42,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:24:42,939 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2021-10-16 02:24:42,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:24:42,940 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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 [2021-10-16 02:24:42,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:24:42,941 INFO L225 Difference]: With dead ends: 31 [2021-10-16 02:24:42,941 INFO L226 Difference]: Without dead ends: 19 [2021-10-16 02:24:42,941 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:24:42,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-16 02:24:42,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-16 02:24:42,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 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) [2021-10-16 02:24:42,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-10-16 02:24:42,946 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-10-16 02:24:42,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:24:42,946 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-10-16 02:24:42,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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) [2021-10-16 02:24:42,947 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-10-16 02:24:42,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 02:24:42,947 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:24:42,948 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2021-10-16 02:24:42,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:24:43,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:24:43,179 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:24:43,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:24:43,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1710175895, now seen corresponding path program 1 times [2021-10-16 02:24:43,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:24:43,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521823501] [2021-10-16 02:24:43,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:24:43,180 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:24:43,195 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 02:24:43,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [189783269] [2021-10-16 02:24:43,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:24:43,211 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:24:43,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:24:43,212 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:24:43,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-16 02:24:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:24:43,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-16 02:24:43,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:24:43,384 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:24:43,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:24:43,467 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:24:43,467 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:24:43,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521823501] [2021-10-16 02:24:43,468 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:24:43,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189783269] [2021-10-16 02:24:43,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189783269] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:24:43,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1286884578] [2021-10-16 02:24:43,505 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-10-16 02:24:43,506 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:24:43,512 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:24:43,518 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:24:43,519 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:24:43,573 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:24:43,577 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:24:43,578 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:24:43,579 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-16 02:24:43,582 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:24:43,583 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:24:43,584 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-16 02:24:43,589 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-10-16 02:24:43,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:24:43,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:24:43,688 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-10-16 02:24:43,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 26 [2021-10-16 02:24:43,690 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:24:43,699 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-16 02:24:43,700 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:24:43,700 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-16 02:24:43,701 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 02:24:43,706 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:24:43,707 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:24:43,708 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:24:43,709 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:24:43,709 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:24:43,710 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:24:43,710 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-16 02:24:43,712 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:24:43,772 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:24:43,784 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:24:43,786 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-10-16 02:24:43,787 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-16 02:24:43,787 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:228, output treesize:101 [2021-10-16 02:24:43,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:24:44,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:24:44,015 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#length_16| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-16 02:24:44,021 INFO L168 Benchmark]: Toolchain (without parser) took 7972.25 ms. Allocated memory is still 136.3 MB. Free memory was 98.4 MB in the beginning and 74.8 MB in the end (delta: 23.6 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:24:44,022 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 136.3 MB. Free memory is still 114.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:24:44,022 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.28 ms. Allocated memory is still 136.3 MB. Free memory was 98.1 MB in the beginning and 110.2 MB in the end (delta: -12.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:24:44,023 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.69 ms. Allocated memory is still 136.3 MB. Free memory was 110.2 MB in the beginning and 108.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:24:44,024 INFO L168 Benchmark]: Boogie Preprocessor took 22.84 ms. Allocated memory is still 136.3 MB. Free memory was 108.9 MB in the beginning and 107.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:24:44,024 INFO L168 Benchmark]: RCFGBuilder took 2561.35 ms. Allocated memory is still 136.3 MB. Free memory was 107.4 MB in the beginning and 94.7 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:24:44,025 INFO L168 Benchmark]: TraceAbstraction took 5079.76 ms. Allocated memory is still 136.3 MB. Free memory was 94.1 MB in the beginning and 74.8 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:24:44,028 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 136.3 MB. Free memory is still 114.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 258.28 ms. Allocated memory is still 136.3 MB. Free memory was 98.1 MB in the beginning and 110.2 MB in the end (delta: -12.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.69 ms. Allocated memory is still 136.3 MB. Free memory was 110.2 MB in the beginning and 108.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.84 ms. Allocated memory is still 136.3 MB. Free memory was 108.9 MB in the beginning and 107.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2561.35 ms. Allocated memory is still 136.3 MB. Free memory was 107.4 MB in the beginning and 94.7 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5079.76 ms. Allocated memory is still 136.3 MB. Free memory was 94.1 MB in the beginning and 74.8 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_16| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_16|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-16 02:24:44,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:24:46,455 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:24:46,457 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:24:46,497 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:24:46,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:24:46,499 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:24:46,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:24:46,503 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:24:46,505 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:24:46,506 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:24:46,507 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:24:46,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:24:46,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:24:46,510 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:24:46,512 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:24:46,514 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:24:46,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:24:46,516 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:24:46,518 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:24:46,521 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:24:46,523 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:24:46,528 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:24:46,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:24:46,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:24:46,534 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:24:46,534 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:24:46,535 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:24:46,536 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:24:46,536 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:24:46,538 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:24:46,538 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:24:46,539 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:24:46,540 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:24:46,541 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:24:46,544 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:24:46,545 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:24:46,549 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:24:46,549 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:24:46,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:24:46,561 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:24:46,562 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:24:46,567 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:24:46,610 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:24:46,610 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:24:46,611 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:24:46,612 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:24:46,612 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:24:46,612 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:24:46,612 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:24:46,613 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:24:46,613 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:24:46,614 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:24:46,615 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:24:46,615 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:24:46,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:24:46,616 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:24:46,616 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:24:46,616 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:24:46,616 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:24:46,617 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:24:46,617 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:24:46,617 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:24:46,617 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:24:46,617 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:24:46,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:24:46,618 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:24:46,618 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:24:46,618 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:24:46,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:24:46,619 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:24:46,619 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:24:46,619 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:24:46,619 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:24:46,620 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:24:46,620 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:24:46,620 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:24:46,621 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:24:46,621 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_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d0dd826da977145676f85980fecf0ec40390b47 [2021-10-16 02:24:47,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:24:47,048 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:24:47,051 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:24:47,052 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:24:47,053 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:24:47,054 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound1.i [2021-10-16 02:24:47,125 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/data/cd09639bd/c4f8a1e619bb48159940dbd313e06d0b/FLAGd01ddfa35 [2021-10-16 02:24:47,773 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:24:47,773 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound1.i [2021-10-16 02:24:47,781 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/data/cd09639bd/c4f8a1e619bb48159940dbd313e06d0b/FLAGd01ddfa35 [2021-10-16 02:24:48,149 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/data/cd09639bd/c4f8a1e619bb48159940dbd313e06d0b [2021-10-16 02:24:48,152 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:24:48,153 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:24:48,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:24:48,154 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:24:48,157 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:24:48,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:24:48" (1/1) ... [2021-10-16 02:24:48,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5deeda20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:24:48, skipping insertion in model container [2021-10-16 02:24:48,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:24:48" (1/1) ... [2021-10-16 02:24:48,172 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:24:48,192 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:24:48,322 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_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound1.i[951,964] [2021-10-16 02:24:48,335 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:24:48,347 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:24:48,361 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_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound1.i[951,964] [2021-10-16 02:24:48,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:24:48,407 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:24:48,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:24:48 WrapperNode [2021-10-16 02:24:48,407 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:24:48,409 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:24:48,409 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:24:48,409 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:24:48,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:24:48" (1/1) ... [2021-10-16 02:24:48,428 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:24:48" (1/1) ... [2021-10-16 02:24:48,452 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:24:48,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:24:48,454 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:24:48,454 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:24:48,462 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:24:48" (1/1) ... [2021-10-16 02:24:48,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:24:48" (1/1) ... [2021-10-16 02:24:48,480 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:24:48" (1/1) ... [2021-10-16 02:24:48,481 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:24:48" (1/1) ... [2021-10-16 02:24:48,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:24:48" (1/1) ... [2021-10-16 02:24:48,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:24:48" (1/1) ... [2021-10-16 02:24:48,492 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:24:48" (1/1) ... [2021-10-16 02:24:48,503 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:24:48,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:24:48,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:24:48,506 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:24:48,507 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:24:48" (1/1) ... [2021-10-16 02:24:48,514 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:24:48,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:24:48,541 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:24:48,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:24:48,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:24:48,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:24:48,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:24:48,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:24:48,968 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:24:48,969 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-16 02:24:48,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:24:48 BoogieIcfgContainer [2021-10-16 02:24:48,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:24:48,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:24:48,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:24:48,992 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:24:48,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:24:48" (1/3) ... [2021-10-16 02:24:48,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e3e875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:24:48, skipping insertion in model container [2021-10-16 02:24:48,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:24:48" (2/3) ... [2021-10-16 02:24:48,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e3e875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:24:48, skipping insertion in model container [2021-10-16 02:24:48,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:24:48" (3/3) ... [2021-10-16 02:24:48,995 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin2_valuebound1.i [2021-10-16 02:24:49,001 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:24:49,001 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-16 02:24:49,087 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:24:49,096 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 [2021-10-16 02:24:49,097 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-16 02:24:49,121 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 19 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) [2021-10-16 02:24:49,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 02:24:49,144 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:24:49,145 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:24:49,146 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:24:49,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:24:49,154 INFO L82 PathProgramCache]: Analyzing trace with hash 119520859, now seen corresponding path program 1 times [2021-10-16 02:24:49,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:24:49,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2007502605] [2021-10-16 02:24:49,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:24:49,170 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:24:49,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:24:49,173 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:24:49,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:24:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:24:49,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 02:24:49,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:24:49,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:24:49,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:24:49,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:24:49,389 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:24:49,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2007502605] [2021-10-16 02:24:49,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2007502605] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:24:49,390 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:24:49,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 02:24:49,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042385016] [2021-10-16 02:24:49,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:24:49,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:24:49,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:24:49,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:24:49,416 INFO L87 Difference]: Start difference. First operand has 20 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 19 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) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-10-16 02:24:49,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:24:49,435 INFO L93 Difference]: Finished difference Result 37 states and 54 transitions. [2021-10-16 02:24:49,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:24:49,436 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 [2021-10-16 02:24:49,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:24:49,445 INFO L225 Difference]: With dead ends: 37 [2021-10-16 02:24:49,445 INFO L226 Difference]: Without dead ends: 16 [2021-10-16 02:24:49,448 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:24:49,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-16 02:24:49,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-16 02:24:49,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:24:49,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-10-16 02:24:49,490 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 8 [2021-10-16 02:24:49,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:24:49,492 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-10-16 02:24:49,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-10-16 02:24:49,492 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-10-16 02:24:49,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 02:24:49,493 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:24:49,493 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:24:49,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:24:49,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:24:49,712 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:24:49,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:24:49,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1186643548, now seen corresponding path program 1 times [2021-10-16 02:24:49,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:24:49,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1157236365] [2021-10-16 02:24:49,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:24:49,714 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:24:49,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:24:49,718 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:24:49,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:24:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:24:49,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-16 02:24:49,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:24:50,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:24:50,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:24:50,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:24:50,917 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:24:50,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1157236365] [2021-10-16 02:24:50,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1157236365] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:24:50,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:24:50,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 5] imperfect sequences [] total 10 [2021-10-16 02:24:50,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423807827] [2021-10-16 02:24:50,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 02:24:50,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:24:50,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 02:24:50,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:24:50,921 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 10 states, 10 states have (on average 1.6) internal successors, (16), 10 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) [2021-10-16 02:24:56,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:24:56,749 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2021-10-16 02:24:56,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-16 02:24:56,751 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 10 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 9 [2021-10-16 02:24:56,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:24:56,752 INFO L225 Difference]: With dead ends: 39 [2021-10-16 02:24:56,752 INFO L226 Difference]: Without dead ends: 31 [2021-10-16 02:24:56,753 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1675.6ms TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2021-10-16 02:24:56,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-16 02:24:56,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2021-10-16 02:24:56,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.28) internal successors, (32), 26 states have internal predecessors, (32), 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) [2021-10-16 02:24:56,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2021-10-16 02:24:56,761 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 9 [2021-10-16 02:24:56,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:24:56,762 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2021-10-16 02:24:56,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 10 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) [2021-10-16 02:24:56,762 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2021-10-16 02:24:56,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-16 02:24:56,763 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:24:56,763 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:24:56,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:24:56,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:24:56,975 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:24:56,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:24:56,976 INFO L82 PathProgramCache]: Analyzing trace with hash -580289007, now seen corresponding path program 1 times [2021-10-16 02:24:56,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:24:56,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [988284395] [2021-10-16 02:24:56,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:24:56,978 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:24:56,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:24:56,979 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:24:57,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:24:57,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:24:57,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:24:57,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:24:57,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:24:57,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:24:57,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:24:57,216 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:24:57,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [988284395] [2021-10-16 02:24:57,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [988284395] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:24:57,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:24:57,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:24:57,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773540693] [2021-10-16 02:24:57,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:24:57,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:24:57,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:24:57,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:24:57,223 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:24:57,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:24:57,306 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2021-10-16 02:24:57,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:24:57,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-16 02:24:57,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:24:57,311 INFO L225 Difference]: With dead ends: 40 [2021-10-16 02:24:57,311 INFO L226 Difference]: Without dead ends: 23 [2021-10-16 02:24:57,312 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:24:57,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-16 02:24:57,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-16 02:24:57,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 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) [2021-10-16 02:24:57,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-10-16 02:24:57,318 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 13 [2021-10-16 02:24:57,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:24:57,318 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-10-16 02:24:57,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:24:57,320 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-10-16 02:24:57,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-16 02:24:57,322 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:24:57,323 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:24:57,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:24:57,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:24:57,539 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:24:57,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:24:57,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1016668114, now seen corresponding path program 1 times [2021-10-16 02:24:57,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:24:57,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1131989143] [2021-10-16 02:24:57,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:24:57,541 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:24:57,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:24:57,547 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:24:57,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 02:24:57,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:24:57,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 02:24:57,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:24:57,833 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:24:57,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:24:57,967 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:24:57,968 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:24:57,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1131989143] [2021-10-16 02:24:57,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1131989143] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:24:57,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [699998320] [2021-10-16 02:24:57,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:24:57,970 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:24:57,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:24:57,980 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:24:57,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-10-16 02:24:58,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:24:58,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-16 02:24:58,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:24:58,215 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:24:58,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:24:58,496 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:24:58,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [699998320] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:24:58,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940387221] [2021-10-16 02:24:58,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:24:58,498 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:24:58,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:24:58,500 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:24:58,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-16 02:24:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:24:58,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:24:58,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:24:58,707 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:24:58,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:24:58,829 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:24:58,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940387221] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:24:58,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:24:58,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 7, 6, 7] total 14 [2021-10-16 02:24:58,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721145760] [2021-10-16 02:24:58,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-16 02:24:58,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:24:58,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-16 02:24:58,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-10-16 02:24:58,833 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 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) [2021-10-16 02:24:59,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:24:59,371 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2021-10-16 02:24:59,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 02:24:59,374 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 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) Word has length 13 [2021-10-16 02:24:59,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:24:59,375 INFO L225 Difference]: With dead ends: 53 [2021-10-16 02:24:59,375 INFO L226 Difference]: Without dead ends: 41 [2021-10-16 02:24:59,376 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 518.1ms TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2021-10-16 02:24:59,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-16 02:24:59,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 26. [2021-10-16 02:24:59,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 24 states have (on average 1.25) internal successors, (30), 25 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) [2021-10-16 02:24:59,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2021-10-16 02:24:59,382 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 13 [2021-10-16 02:24:59,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:24:59,382 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2021-10-16 02:24:59,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 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) [2021-10-16 02:24:59,383 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2021-10-16 02:24:59,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-16 02:24:59,383 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:24:59,384 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:24:59,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:24:59,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:24:59,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:24:59,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:24:59,985 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:24:59,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:24:59,985 INFO L82 PathProgramCache]: Analyzing trace with hash 505525932, now seen corresponding path program 1 times [2021-10-16 02:24:59,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:24:59,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852788853] [2021-10-16 02:24:59,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:24:59,986 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:24:59,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:24:59,988 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:24:59,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 02:25:00,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:25:00,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-16 02:25:00,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:25:00,576 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:25:00,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:25:02,034 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:25:02,034 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:25:02,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852788853] [2021-10-16 02:25:02,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [852788853] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:25:02,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [581918746] [2021-10-16 02:25:02,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:25:02,035 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:25:02,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:25:02,051 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:25:02,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-10-16 02:25:02,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:25:02,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-16 02:25:02,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:25:02,588 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:25:02,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:25:03,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:25:03,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [581918746] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:25:03,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836408434] [2021-10-16 02:25:03,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:25:03,888 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:25:03,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:25:03,903 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:25:03,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-16 02:25:04,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:25:04,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-16 02:25:04,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:25:04,368 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:25:04,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:25:05,115 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:25:05,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836408434] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:25:05,115 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:25:05,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 8, 7, 9, 7] total 17 [2021-10-16 02:25:05,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882538009] [2021-10-16 02:25:05,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-16 02:25:05,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:25:05,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-16 02:25:05,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2021-10-16 02:25:05,118 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 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) [2021-10-16 02:25:07,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:25:07,706 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2021-10-16 02:25:07,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-16 02:25:07,709 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 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 15 [2021-10-16 02:25:07,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:25:07,709 INFO L225 Difference]: With dead ends: 52 [2021-10-16 02:25:07,709 INFO L226 Difference]: Without dead ends: 36 [2021-10-16 02:25:07,710 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 64 SyntacticMatches, 6 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 3926.4ms TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2021-10-16 02:25:07,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-16 02:25:07,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 26. [2021-10-16 02:25:07,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 24 states have (on average 1.125) internal successors, (27), 25 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:25:07,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2021-10-16 02:25:07,716 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 15 [2021-10-16 02:25:07,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:25:07,716 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2021-10-16 02:25:07,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 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) [2021-10-16 02:25:07,717 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2021-10-16 02:25:07,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-16 02:25:07,718 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:25:07,718 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:25:07,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-10-16 02:25:07,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-16 02:25:08,140 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-10-16 02:25:08,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:25:08,319 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:25:08,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:25:08,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1023135329, now seen corresponding path program 2 times [2021-10-16 02:25:08,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:25:08,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1316615287] [2021-10-16 02:25:08,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:25:08,320 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:25:08,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:25:08,322 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:25:08,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-16 02:25:08,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:25:08,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:25:08,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:25:08,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:25:08,660 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:25:08,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:25:08,763 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:25:08,763 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:25:08,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1316615287] [2021-10-16 02:25:08,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1316615287] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:25:08,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1340110480] [2021-10-16 02:25:08,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:25:08,764 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:25:08,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:25:08,767 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:25:08,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-10-16 02:25:09,047 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:25:09,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:25:09,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:25:09,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:25:09,152 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:25:09,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:25:09,218 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:25:09,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1340110480] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:25:09,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916766996] [2021-10-16 02:25:09,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:25:09,219 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:25:09,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:25:09,221 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:25:09,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-16 02:25:09,448 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:25:09,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:25:09,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:25:09,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:25:09,575 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:25:09,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:25:09,644 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:25:09,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916766996] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:25:09,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:25:09,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4, 5, 4, 5] total 7 [2021-10-16 02:25:09,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845363078] [2021-10-16 02:25:09,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 02:25:09,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:25:09,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 02:25:09,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:25:09,647 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:25:09,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:25:09,711 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2021-10-16 02:25:09,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:25:09,713 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-16 02:25:09,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:25:09,714 INFO L225 Difference]: With dead ends: 26 [2021-10-16 02:25:09,714 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:25:09,714 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 100 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 46.7ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:25:09,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:25:09,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:25:09,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:25:09,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:25:09,715 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2021-10-16 02:25:09,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:25:09,715 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:25:09,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:25:09,716 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:25:09,716 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:25:09,718 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:25:09,719 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:25:09,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-16 02:25:09,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-10-16 02:25:10,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-16 02:25:10,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:25:10,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:25:10,346 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:25:10,413 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:25:10,414 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:25:10,414 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:25:10,998 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2021-10-16 02:25:10,998 INFO L857 garLoopResultBuilder]: For program point L19(lines 19 22) no Hoare annotation was computed. [2021-10-16 02:25:10,998 INFO L853 garLoopResultBuilder]: At program point L19-2(line 40) the Hoare annotation is: (let ((.cse1 (not (bvuge ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~b~0))) (.cse3 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~B~0)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32))) (.cse5 (= ULTIMATE.start_main_~q~0 (_ bv0 32))) (.cse2 (= ULTIMATE.start_main_~B~0 (_ bv1 32))) (.cse4 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)))) (or (and .cse0 (= ULTIMATE.start_main_~q~0 (_ bv1 32)) .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~r~0 (bvadd (bvneg ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~A~0))) (and .cse0 .cse5 (= ULTIMATE.start_main_~b~0 (_ bv1 32)) .cse1 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~A~0) .cse3 .cse4) (and (bvule ULTIMATE.start_main_~r~0 (_ bv1 32)) .cse0 (= ULTIMATE.start_main_~b~0 (bvmul (_ bv2 32) ULTIMATE.start_main_~B~0)) .cse5 .cse2 (= (bvadd (bvmul ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~A~0) (bvuge ULTIMATE.start_main_~r~0 (_ bv1 32)) .cse4))) [2021-10-16 02:25:10,998 INFO L857 garLoopResultBuilder]: For program point L19-3(lines 19 22) no Hoare annotation was computed. [2021-10-16 02:25:10,998 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-10-16 02:25:10,999 INFO L860 garLoopResultBuilder]: At program point L19-5(lines 18 24) the Hoare annotation is: true [2021-10-16 02:25:10,999 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 02:25:10,999 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:25:10,999 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 02:25:10,999 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2021-10-16 02:25:10,999 INFO L857 garLoopResultBuilder]: For program point L20(lines 20 21) no Hoare annotation was computed. [2021-10-16 02:25:10,999 INFO L857 garLoopResultBuilder]: For program point L20-1(lines 20 21) no Hoare annotation was computed. [2021-10-16 02:25:10,999 INFO L860 garLoopResultBuilder]: At program point L49(lines 25 50) the Hoare annotation is: true [2021-10-16 02:25:10,999 INFO L857 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2021-10-16 02:25:10,999 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:25:11,000 INFO L857 garLoopResultBuilder]: For program point L38-1(lines 38 47) no Hoare annotation was computed. [2021-10-16 02:25:11,000 INFO L853 garLoopResultBuilder]: At program point L34-2(lines 34 37) the Hoare annotation is: (let ((.cse0 (bvule ULTIMATE.start_main_~r~0 (_ bv1 32))) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32))) (.cse2 (= ULTIMATE.start_main_~q~0 (_ bv0 32))) (.cse3 (= ULTIMATE.start_main_~B~0 (_ bv1 32)))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~A~0) .cse3 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~B~0)) (and .cse0 .cse1 (= ULTIMATE.start_main_~b~0 (bvmul (_ bv2 32) ULTIMATE.start_main_~B~0)) .cse2 .cse3 (= (bvadd (bvmul ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~A~0) (bvuge ULTIMATE.start_main_~r~0 (_ bv1 32))))) [2021-10-16 02:25:11,000 INFO L857 garLoopResultBuilder]: For program point L43(lines 43 46) no Hoare annotation was computed. [2021-10-16 02:25:11,000 INFO L857 garLoopResultBuilder]: For program point L43-2(lines 25 50) no Hoare annotation was computed. [2021-10-16 02:25:11,000 INFO L857 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2021-10-16 02:25:11,004 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:25:11,008 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:452) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:192) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-16 02:25:11,012 INFO L168 Benchmark]: Toolchain (without parser) took 22858.08 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 35.4 MB in the beginning and 27.9 MB in the end (delta: 7.5 MB). Peak memory consumption was 25.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:25:11,012 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 56.6 MB. Free memory is still 37.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:25:11,013 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.71 ms. Allocated memory is still 56.6 MB. Free memory was 35.1 MB in the beginning and 40.7 MB in the end (delta: -5.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:25:11,013 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.70 ms. Allocated memory is still 56.6 MB. Free memory was 40.7 MB in the beginning and 39.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:25:11,014 INFO L168 Benchmark]: Boogie Preprocessor took 49.66 ms. Allocated memory is still 56.6 MB. Free memory was 39.1 MB in the beginning and 38.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:25:11,014 INFO L168 Benchmark]: RCFGBuilder took 466.21 ms. Allocated memory is still 56.6 MB. Free memory was 38.0 MB in the beginning and 28.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:25:11,015 INFO L168 Benchmark]: TraceAbstraction took 22037.72 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 28.0 MB in the beginning and 27.9 MB in the end (delta: 126.5 kB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:25:11,017 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 56.6 MB. Free memory is still 37.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 253.71 ms. Allocated memory is still 56.6 MB. Free memory was 35.1 MB in the beginning and 40.7 MB in the end (delta: -5.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.70 ms. Allocated memory is still 56.6 MB. Free memory was 40.7 MB in the beginning and 39.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.66 ms. Allocated memory is still 56.6 MB. Free memory was 39.1 MB in the beginning and 38.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 466.21 ms. Allocated memory is still 56.6 MB. Free memory was 38.0 MB in the beginning and 28.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 22037.72 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 28.0 MB in the beginning and 27.9 MB in the end (delta: 126.5 kB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 21919.3ms, OverallIterations: 6, TraceHistogramMax: 3, EmptinessCheckTime: 40.1ms, AutomataDifference: 9183.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 665.2ms, InitialAbstractionConstructionTime: 12.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 74 SDtfs, 276 SDslu, 184 SDs, 0 SdLazy, 284 SolverSat, 107 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 5671.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 345 GetRequests, 269 SyntacticMatches, 10 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 6172.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=2, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 46.2ms AutomataMinimizationTime, 6 MinimizatonAttempts, 29 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 11 NumberOfFragments, 131 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 98.6ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 42 FormulaSimplificationTreeSizeReductionInter, 559.9ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 82.6ms SsaConstructionTime, 485.2ms SatisfiabilityAnalysisTime, 7512.2ms InterpolantComputationTime, 171 NumberOfCodeBlocks, 171 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 318 ConstructedInterpolants, 0 QuantifiedInterpolants, 1812 SizeOfPredicates, 44 NumberOfNonLiveVariables, 497 ConjunctsInSsa, 105 ConjunctsInUnsatCore, 24 InterpolantComputations, 6 PerfectInterpolantSequences, 50/124 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-16 02:25:11,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba16d9e-bd6a-4818-8d22-9235d22e2f9c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...