./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound1.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_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/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_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/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_2a17e313-aa20-4623-a6b7-94cb90252f2b/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 8c067034d8676e097c36fd744c405062d302fbf2 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/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_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/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_2a17e313-aa20-4623-a6b7-94cb90252f2b/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 8c067034d8676e097c36fd744c405062d302fbf2 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 03:12:51,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:12:51,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:12:51,485 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:12:51,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:12:51,491 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:12:51,494 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:12:51,498 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:12:51,501 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:12:51,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:12:51,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:12:51,512 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:12:51,513 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:12:51,516 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:12:51,518 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:12:51,522 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:12:51,524 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:12:51,525 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:12:51,528 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:12:51,536 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:12:51,538 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:12:51,539 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:12:51,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:12:51,544 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:12:51,548 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:12:51,548 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:12:51,549 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:12:51,551 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:12:51,552 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:12:51,553 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:12:51,554 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:12:51,555 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:12:51,557 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:12:51,558 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:12:51,560 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:12:51,560 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:12:51,561 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:12:51,561 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:12:51,561 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:12:51,562 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:12:51,563 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:12:51,564 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 03:12:51,616 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:12:51,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:12:51,618 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:12:51,618 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:12:51,619 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:12:51,619 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:12:51,619 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 03:12:51,619 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:12:51,620 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:12:51,620 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 03:12:51,621 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 03:12:51,621 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:12:51,621 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 03:12:51,621 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 03:12:51,622 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 03:12:51,622 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:12:51,623 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:12:51,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 03:12:51,623 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:12:51,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:12:51,623 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:12:51,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:12:51,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:12:51,624 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:12:51,624 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:12:51,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:12:51,625 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:12:51,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:12:51,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:12:51,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:12:51,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:12:51,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:12:51,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:12:51,627 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:12:51,627 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 03:12:51,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 03:12:51,627 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:12:51,628 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:12:51,628 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:12:51,628 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_2a17e313-aa20-4623-a6b7-94cb90252f2b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c067034d8676e097c36fd744c405062d302fbf2 [2021-10-16 03:12:51,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:12:51,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:12:51,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:12:51,987 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:12:51,988 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:12:51,989 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound1.i [2021-10-16 03:12:52,054 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/data/12ed2c877/856a7be22d17476db5d62a49149a1b06/FLAG9eb612193 [2021-10-16 03:12:52,545 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:12:52,548 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound1.i [2021-10-16 03:12:52,564 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/data/12ed2c877/856a7be22d17476db5d62a49149a1b06/FLAG9eb612193 [2021-10-16 03:12:52,916 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/data/12ed2c877/856a7be22d17476db5d62a49149a1b06 [2021-10-16 03:12:52,919 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:12:52,920 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:12:52,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:12:52,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:12:52,938 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:12:52,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:12:52" (1/1) ... [2021-10-16 03:12:52,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67e8c74a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:52, skipping insertion in model container [2021-10-16 03:12:52,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:12:52" (1/1) ... [2021-10-16 03:12:52,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:12:52,963 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:12:53,128 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_2a17e313-aa20-4623-a6b7-94cb90252f2b/sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound1.i[951,964] [2021-10-16 03:12:53,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:12:53,150 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:12:53,161 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_2a17e313-aa20-4623-a6b7-94cb90252f2b/sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound1.i[951,964] [2021-10-16 03:12:53,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:12:53,179 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:12:53,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:53 WrapperNode [2021-10-16 03:12:53,180 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:12:53,181 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:12:53,181 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:12:53,181 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:12:53,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:53" (1/1) ... [2021-10-16 03:12:53,199 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:53" (1/1) ... [2021-10-16 03:12:53,220 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:12:53,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:12:53,221 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:12:53,221 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:12:53,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:53" (1/1) ... [2021-10-16 03:12:53,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:53" (1/1) ... [2021-10-16 03:12:53,247 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:53" (1/1) ... [2021-10-16 03:12:53,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:53" (1/1) ... [2021-10-16 03:12:53,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:53" (1/1) ... [2021-10-16 03:12:53,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:53" (1/1) ... [2021-10-16 03:12:53,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:53" (1/1) ... [2021-10-16 03:12:53,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:12:53,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:12:53,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:12:53,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:12:53,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:53" (1/1) ... [2021-10-16 03:12:53,267 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:12:53,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:12:53,292 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:12:53,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:12:53,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 03:12:53,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:12:53,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:12:53,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:12:53,584 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:12:53,597 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-16 03:12:53,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:12:53 BoogieIcfgContainer [2021-10-16 03:12:53,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:12:53,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:12:53,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:12:53,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:12:53,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:12:52" (1/3) ... [2021-10-16 03:12:53,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6701676a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:12:53, skipping insertion in model container [2021-10-16 03:12:53,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:53" (2/3) ... [2021-10-16 03:12:53,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6701676a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:12:53, skipping insertion in model container [2021-10-16 03:12:53,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:12:53" (3/3) ... [2021-10-16 03:12:53,609 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin2_unwindbound1.i [2021-10-16 03:12:53,613 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:12:53,617 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-16 03:12:53,662 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:12:53,668 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 03:12:53,669 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-16 03:12:53,682 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 15 states have internal predecessors, (23), 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 03:12:53,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 03:12:53,687 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:12:53,688 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 03:12:53,688 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:12:53,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:12:53,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1384273294, now seen corresponding path program 1 times [2021-10-16 03:12:53,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:12:53,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874922751] [2021-10-16 03:12:53,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:12:53,704 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:12:53,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:12:53,844 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 03:12:53,845 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:12:53,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874922751] [2021-10-16 03:12:53,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874922751] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:12:53,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:12:53,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 03:12:53,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765151477] [2021-10-16 03:12:53,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 03:12:53,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:12:53,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 03:12:53,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 03:12:53,870 INFO L87 Difference]: Start difference. First operand has 16 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:12:53,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:12:53,888 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2021-10-16 03:12:53,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 03:12:53,890 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-16 03:12:53,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:12:53,897 INFO L225 Difference]: With dead ends: 28 [2021-10-16 03:12:53,898 INFO L226 Difference]: Without dead ends: 14 [2021-10-16 03:12:53,900 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 03:12:53,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-16 03:12:53,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-16 03:12:53,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:12:53,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2021-10-16 03:12:53,930 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 6 [2021-10-16 03:12:53,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:12:53,932 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2021-10-16 03:12:53,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:12:53,932 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2021-10-16 03:12:53,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-16 03:12:53,933 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:12:53,934 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:12:53,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 03:12:53,934 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:12:53,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:12:53,940 INFO L82 PathProgramCache]: Analyzing trace with hash -346058289, now seen corresponding path program 1 times [2021-10-16 03:12:53,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:12:53,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848692121] [2021-10-16 03:12:53,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:12:53,941 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:12:53,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:12:54,044 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 03:12:54,045 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:12:54,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848692121] [2021-10-16 03:12:54,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848692121] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:12:54,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:12:54,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 03:12:54,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709050367] [2021-10-16 03:12:54,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:12:54,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:12:54,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:12:54,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:12:54,049 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:12:54,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:12:54,069 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2021-10-16 03:12:54,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:12:54,069 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-16 03:12:54,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:12:54,083 INFO L225 Difference]: With dead ends: 26 [2021-10-16 03:12:54,083 INFO L226 Difference]: Without dead ends: 16 [2021-10-16 03:12:54,084 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.7ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:12:54,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-16 03:12:54,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-16 03:12:54,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 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 03:12:54,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2021-10-16 03:12:54,088 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 7 [2021-10-16 03:12:54,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:12:54,088 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2021-10-16 03:12:54,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:12:54,089 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2021-10-16 03:12:54,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 03:12:54,089 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:12:54,089 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:12:54,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 03:12:54,090 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:12:54,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:12:54,091 INFO L82 PathProgramCache]: Analyzing trace with hash -2089077620, now seen corresponding path program 1 times [2021-10-16 03:12:54,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:12:54,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709821930] [2021-10-16 03:12:54,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:12:54,092 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:12:54,123 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 03:12:54,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1077029064] [2021-10-16 03:12:54,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:12:54,124 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:12:54,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:12:54,126 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:12:54,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 03:12:54,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:12:54,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 03:12:54,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:12:54,299 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 03:12:54,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:12:54,348 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 03:12:54,349 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:12:54,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709821930] [2021-10-16 03:12:54,350 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 03:12:54,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077029064] [2021-10-16 03:12:54,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077029064] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:12:54,352 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:12:54,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-16 03:12:54,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585861274] [2021-10-16 03:12:54,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 03:12:54,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:12:54,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 03:12:54,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-16 03:12:54,358 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 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 03:12:54,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:12:54,396 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2021-10-16 03:12:54,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 03:12:54,397 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 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 03:12:54,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:12:54,398 INFO L225 Difference]: With dead ends: 22 [2021-10-16 03:12:54,398 INFO L226 Difference]: Without dead ends: 12 [2021-10-16 03:12:54,398 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 18.6ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-16 03:12:54,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-16 03:12:54,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-16 03:12:54,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) 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 03:12:54,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2021-10-16 03:12:54,402 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 8 [2021-10-16 03:12:54,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:12:54,402 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-10-16 03:12:54,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 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 03:12:54,403 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2021-10-16 03:12:54,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 03:12:54,403 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:12:54,403 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:12:54,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-16 03:12:54,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:12:54,618 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:12:54,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:12:54,619 INFO L82 PathProgramCache]: Analyzing trace with hash -336934448, now seen corresponding path program 1 times [2021-10-16 03:12:54,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:12:54,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232772423] [2021-10-16 03:12:54,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:12:54,620 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:12:54,645 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 03:12:54,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [756924349] [2021-10-16 03:12:54,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:12:54,645 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:12:54,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:12:54,657 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:12:54,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-16 03:12:54,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:12:54,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 03:12:54,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:12:54,951 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 03:12:54,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:12:57,141 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 03:12:57,141 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:12:57,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232772423] [2021-10-16 03:12:57,142 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 03:12:57,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756924349] [2021-10-16 03:12:57,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756924349] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:12:57,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:12:57,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 03:12:57,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908903320] [2021-10-16 03:12:57,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 03:12:57,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:12:57,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 03:12:57,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 03:12:57,145 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 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 03:12:59,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:12:59,257 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-10-16 03:12:59,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 03:12:59,258 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 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 03:12:59,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:12:59,259 INFO L225 Difference]: With dead ends: 26 [2021-10-16 03:12:59,259 INFO L226 Difference]: Without dead ends: 16 [2021-10-16 03:12:59,259 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 98.3ms TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-16 03:12:59,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-16 03:12:59,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-16 03:12:59,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:12:59,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-10-16 03:12:59,263 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 9 [2021-10-16 03:12:59,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:12:59,263 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-10-16 03:12:59,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 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 03:12:59,263 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-10-16 03:12:59,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-16 03:12:59,264 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:12:59,264 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:12:59,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-16 03:12:59,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:12:59,474 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:12:59,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:12:59,475 INFO L82 PathProgramCache]: Analyzing trace with hash -310378451, now seen corresponding path program 1 times [2021-10-16 03:12:59,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:12:59,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140613973] [2021-10-16 03:12:59,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:12:59,475 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:12:59,505 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 03:12:59,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1957345919] [2021-10-16 03:12:59,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:12:59,506 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:12:59,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:12:59,522 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:12:59,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-16 03:12:59,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:12:59,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 03:12:59,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:12:59,651 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:12:59,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:12:59,691 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:12:59,692 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:12:59,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140613973] [2021-10-16 03:12:59,692 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 03:12:59,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957345919] [2021-10-16 03:12:59,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957345919] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:12:59,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [266560732] [2021-10-16 03:12:59,719 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-16 03:12:59,719 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 03:12:59,724 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 03:12:59,730 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 03:12:59,730 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 03:12:59,765 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:12:59,769 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 03:12:59,770 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:12:59,771 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-16 03:12:59,774 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 03:12:59,775 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:12:59,776 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-16 03:12:59,779 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-10-16 03:12:59,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:12:59,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:12:59,836 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-10-16 03:12:59,836 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 03:12:59,837 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:12:59,839 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-16 03:12:59,840 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:12:59,841 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-16 03:12:59,841 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 03:12:59,843 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:12:59,875 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:12:59,878 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:12:59,881 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-10-16 03:12:59,882 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-16 03:12:59,882 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:101, output treesize:89 [2021-10-16 03:12:59,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-16 03:13:00,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:13:00,106 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_8| 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 03:13:00,110 INFO L168 Benchmark]: Toolchain (without parser) took 7189.44 ms. Allocated memory was 100.7 MB in the beginning and 127.9 MB in the end (delta: 27.3 MB). Free memory was 62.5 MB in the beginning and 92.1 MB in the end (delta: -29.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:13:00,110 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 100.7 MB. Free memory is still 78.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:13:00,111 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.91 ms. Allocated memory is still 100.7 MB. Free memory was 62.3 MB in the beginning and 75.1 MB in the end (delta: -12.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 03:13:00,112 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.56 ms. Allocated memory is still 100.7 MB. Free memory was 75.1 MB in the beginning and 73.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:13:00,112 INFO L168 Benchmark]: Boogie Preprocessor took 37.17 ms. Allocated memory is still 100.7 MB. Free memory was 73.5 MB in the beginning and 72.6 MB in the end (delta: 898.9 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 03:13:00,113 INFO L168 Benchmark]: RCFGBuilder took 341.66 ms. Allocated memory is still 100.7 MB. Free memory was 72.3 MB in the beginning and 61.3 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 03:13:00,113 INFO L168 Benchmark]: TraceAbstraction took 6506.88 ms. Allocated memory was 100.7 MB in the beginning and 127.9 MB in the end (delta: 27.3 MB). Free memory was 61.0 MB in the beginning and 92.1 MB in the end (delta: -31.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:13:00,116 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 100.7 MB. Free memory is still 78.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 245.91 ms. Allocated memory is still 100.7 MB. Free memory was 62.3 MB in the beginning and 75.1 MB in the end (delta: -12.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.56 ms. Allocated memory is still 100.7 MB. Free memory was 75.1 MB in the beginning and 73.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.17 ms. Allocated memory is still 100.7 MB. Free memory was 73.5 MB in the beginning and 72.6 MB in the end (delta: 898.9 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 341.66 ms. Allocated memory is still 100.7 MB. Free memory was 72.3 MB in the beginning and 61.3 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6506.88 ms. Allocated memory was 100.7 MB in the beginning and 127.9 MB in the end (delta: 27.3 MB). Free memory was 61.0 MB in the beginning and 92.1 MB in the end (delta: -31.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_8| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_8|: 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 03:13:00,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 03:13:02,493 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:13:02,497 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:13:02,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:13:02,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:13:02,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:13:02,554 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:13:02,558 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:13:02,562 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:13:02,570 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:13:02,571 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:13:02,573 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:13:02,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:13:02,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:13:02,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:13:02,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:13:02,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:13:02,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:13:02,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:13:02,594 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:13:02,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:13:02,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:13:02,600 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:13:02,603 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:13:02,612 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:13:02,612 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:13:02,613 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:13:02,615 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:13:02,615 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:13:02,616 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:13:02,617 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:13:02,618 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:13:02,619 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:13:02,620 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:13:02,622 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:13:02,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:13:02,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:13:02,623 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:13:02,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:13:02,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:13:02,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:13:02,631 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 03:13:02,676 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:13:02,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:13:02,677 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:13:02,678 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:13:02,678 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:13:02,678 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:13:02,678 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:13:02,679 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:13:02,680 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:13:02,681 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:13:02,682 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:13:02,682 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:13:02,682 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:13:02,683 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:13:02,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:13:02,683 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:13:02,683 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:13:02,684 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 03:13:02,684 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 03:13:02,684 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:13:02,684 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:13:02,684 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:13:02,685 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:13:02,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:13:02,685 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 03:13:02,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:13:02,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:13:02,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:13:02,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:13:02,686 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:13:02,687 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 03:13:02,687 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 03:13:02,687 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:13:02,687 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:13:02,688 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:13:02,688 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_2a17e313-aa20-4623-a6b7-94cb90252f2b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c067034d8676e097c36fd744c405062d302fbf2 [2021-10-16 03:13:03,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:13:03,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:13:03,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:13:03,133 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:13:03,134 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:13:03,137 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound1.i [2021-10-16 03:13:03,214 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/data/31988f1a5/8970097aa274440b983e401f54c02684/FLAG61c3b74db [2021-10-16 03:13:03,714 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:13:03,715 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound1.i [2021-10-16 03:13:03,721 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/data/31988f1a5/8970097aa274440b983e401f54c02684/FLAG61c3b74db [2021-10-16 03:13:04,111 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/data/31988f1a5/8970097aa274440b983e401f54c02684 [2021-10-16 03:13:04,114 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:13:04,115 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:13:04,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:13:04,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:13:04,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:13:04,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:13:04" (1/1) ... [2021-10-16 03:13:04,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54dfa231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:13:04, skipping insertion in model container [2021-10-16 03:13:04,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:13:04" (1/1) ... [2021-10-16 03:13:04,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:13:04,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:13:04,345 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_2a17e313-aa20-4623-a6b7-94cb90252f2b/sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound1.i[951,964] [2021-10-16 03:13:04,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:13:04,389 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:13:04,408 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_2a17e313-aa20-4623-a6b7-94cb90252f2b/sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound1.i[951,964] [2021-10-16 03:13:04,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:13:04,472 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:13:04,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:13:04 WrapperNode [2021-10-16 03:13:04,473 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:13:04,474 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:13:04,474 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:13:04,475 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:13:04,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:13:04" (1/1) ... [2021-10-16 03:13:04,492 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:13:04" (1/1) ... [2021-10-16 03:13:04,510 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:13:04,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:13:04,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:13:04,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:13:04,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:13:04" (1/1) ... [2021-10-16 03:13:04,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:13:04" (1/1) ... [2021-10-16 03:13:04,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:13:04" (1/1) ... [2021-10-16 03:13:04,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:13:04" (1/1) ... [2021-10-16 03:13:04,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:13:04" (1/1) ... [2021-10-16 03:13:04,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:13:04" (1/1) ... [2021-10-16 03:13:04,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:13:04" (1/1) ... [2021-10-16 03:13:04,535 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:13:04,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:13:04,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:13:04,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:13:04,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:13:04" (1/1) ... [2021-10-16 03:13:04,543 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:13:04,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:13:04,569 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:13:04,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:13:04,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 03:13:04,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:13:04,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:13:04,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:13:04,906 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:13:04,907 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-16 03:13:04,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:13:04 BoogieIcfgContainer [2021-10-16 03:13:04,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:13:04,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:13:04,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:13:04,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:13:04,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:13:04" (1/3) ... [2021-10-16 03:13:04,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@646c4579 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:13:04, skipping insertion in model container [2021-10-16 03:13:04,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:13:04" (2/3) ... [2021-10-16 03:13:04,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@646c4579 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:13:04, skipping insertion in model container [2021-10-16 03:13:04,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:13:04" (3/3) ... [2021-10-16 03:13:04,918 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin2_unwindbound1.i [2021-10-16 03:13:04,924 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:13:04,924 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-16 03:13:04,977 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:13:04,983 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 03:13:04,983 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-16 03:13:04,996 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:13:05,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-16 03:13:05,014 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:13:05,014 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:13:05,015 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:13:05,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:13:05,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1819218388, now seen corresponding path program 1 times [2021-10-16 03:13:05,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:13:05,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1301187627] [2021-10-16 03:13:05,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:13:05,040 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:13:05,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:13:05,048 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:13:05,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 03:13:05,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:13:05,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 03:13:05,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:13:05,259 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 03:13:05,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:13:05,290 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 03:13:05,291 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:13:05,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1301187627] [2021-10-16 03:13:05,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1301187627] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:13:05,293 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:13:05,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 03:13:05,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787479778] [2021-10-16 03:13:05,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 03:13:05,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:13:05,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 03:13:05,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 03:13:05,322 INFO L87 Difference]: Start difference. First operand has 20 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:13:05,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:13:05,339 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2021-10-16 03:13:05,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 03:13:05,340 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-16 03:13:05,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:13:05,349 INFO L225 Difference]: With dead ends: 35 [2021-10-16 03:13:05,349 INFO L226 Difference]: Without dead ends: 16 [2021-10-16 03:13:05,352 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 03:13:05,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-16 03:13:05,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-16 03:13:05,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:13:05,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2021-10-16 03:13:05,386 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 7 [2021-10-16 03:13:05,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:13:05,387 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2021-10-16 03:13:05,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:13:05,387 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2021-10-16 03:13:05,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 03:13:05,388 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:13:05,388 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:13:05,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 03:13:05,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:13:05,599 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:13:05,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:13:05,600 INFO L82 PathProgramCache]: Analyzing trace with hash 177936045, now seen corresponding path program 1 times [2021-10-16 03:13:05,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:13:05,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1750429996] [2021-10-16 03:13:05,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:13:05,601 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:13:05,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:13:05,603 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:13:05,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 03:13:05,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:13:05,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 03:13:05,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:13:05,782 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 03:13:05,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:13:05,845 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 03:13:05,845 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:13:05,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1750429996] [2021-10-16 03:13:05,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1750429996] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:13:05,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:13:05,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-16 03:13:05,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400434209] [2021-10-16 03:13:05,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 03:13:05,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:13:05,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 03:13:05,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 03:13:05,852 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 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 03:13:05,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:13:05,886 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2021-10-16 03:13:05,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:13:05,887 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 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 03:13:05,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:13:05,889 INFO L225 Difference]: With dead ends: 29 [2021-10-16 03:13:05,889 INFO L226 Difference]: Without dead ends: 18 [2021-10-16 03:13:05,890 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 24.4ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 03:13:05,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-16 03:13:05,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-16 03:13:05,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 16 states have (on average 1.375) internal successors, (22), 17 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 03:13:05,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2021-10-16 03:13:05,898 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 8 [2021-10-16 03:13:05,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:13:05,903 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2021-10-16 03:13:05,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 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 03:13:05,904 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2021-10-16 03:13:05,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 03:13:05,905 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:13:05,906 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:13:05,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 03:13:06,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:13:06,117 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:13:06,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:13:06,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1269844846, now seen corresponding path program 1 times [2021-10-16 03:13:06,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:13:06,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1381566370] [2021-10-16 03:13:06,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:13:06,119 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:13:06,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:13:06,130 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:13:06,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 03:13:06,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:13:06,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 03:13:06,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:13:06,273 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 03:13:06,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:13:06,341 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 03:13:06,341 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:13:06,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1381566370] [2021-10-16 03:13:06,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1381566370] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:13:06,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:13:06,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-16 03:13:06,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337514425] [2021-10-16 03:13:06,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 03:13:06,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:13:06,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 03:13:06,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-16 03:13:06,345 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 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 03:13:06,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:13:06,464 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2021-10-16 03:13:06,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 03:13:06,467 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 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 03:13:06,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:13:06,468 INFO L225 Difference]: With dead ends: 51 [2021-10-16 03:13:06,468 INFO L226 Difference]: Without dead ends: 40 [2021-10-16 03:13:06,469 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 87.5ms TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-10-16 03:13:06,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-16 03:13:06,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 27. [2021-10-16 03:13:06,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.44) internal successors, (36), 26 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:13:06,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2021-10-16 03:13:06,480 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 9 [2021-10-16 03:13:06,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:13:06,481 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2021-10-16 03:13:06,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 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 03:13:06,481 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2021-10-16 03:13:06,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 03:13:06,482 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:13:06,482 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:13:06,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-16 03:13:06,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:13:06,695 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:13:06,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:13:06,696 INFO L82 PathProgramCache]: Analyzing trace with hash 710446894, now seen corresponding path program 1 times [2021-10-16 03:13:06,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:13:06,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [249114787] [2021-10-16 03:13:06,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:13:06,697 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:13:06,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:13:06,698 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:13:06,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 03:13:06,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:13:06,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 03:13:06,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:13:07,021 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 03:13:07,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:13:07,675 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 03:13:07,675 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:13:07,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [249114787] [2021-10-16 03:13:07,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [249114787] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:13:07,676 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:13:07,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-16 03:13:07,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493114734] [2021-10-16 03:13:07,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 03:13:07,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:13:07,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 03:13:07,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-16 03:13:07,679 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:13:08,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:13:08,248 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2021-10-16 03:13:08,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 03:13:08,250 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-16 03:13:08,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:13:08,251 INFO L225 Difference]: With dead ends: 40 [2021-10-16 03:13:08,251 INFO L226 Difference]: Without dead ends: 30 [2021-10-16 03:13:08,251 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 490.7ms TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-10-16 03:13:08,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-16 03:13:08,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2021-10-16 03:13:08,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.32) internal successors, (33), 26 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:13:08,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2021-10-16 03:13:08,256 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 10 [2021-10-16 03:13:08,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:13:08,256 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2021-10-16 03:13:08,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:13:08,257 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2021-10-16 03:13:08,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-16 03:13:08,258 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:13:08,258 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:13:08,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-16 03:13:08,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:13:08,465 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:13:08,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:13:08,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1984750991, now seen corresponding path program 1 times [2021-10-16 03:13:08,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:13:08,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [588241287] [2021-10-16 03:13:08,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:13:08,466 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:13:08,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:13:08,468 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:13:08,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 03:13:08,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:13:08,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 03:13:08,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:13:08,639 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:13:08,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:13:08,725 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:13:08,725 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:13:08,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [588241287] [2021-10-16 03:13:08,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [588241287] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:13:08,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [758560395] [2021-10-16 03:13:08,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:13:08,726 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:13:08,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:13:08,735 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:13:08,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-10-16 03:13:08,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:13:08,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 03:13:08,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:13:08,953 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:13:08,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:13:09,031 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:13:09,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [758560395] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:13:09,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428861153] [2021-10-16 03:13:09,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:13:09,032 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:13:09,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:13:09,040 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:13:09,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-16 03:13:09,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:13:09,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 03:13:09,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:13:09,223 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:13:09,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:13:09,430 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:13:09,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428861153] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:13:09,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 03:13:09,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 6] total 13 [2021-10-16 03:13:09,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771013112] [2021-10-16 03:13:09,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-16 03:13:09,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:13:09,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-16 03:13:09,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-10-16 03:13:09,433 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 states have internal predecessors, (34), 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 03:13:09,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:13:09,487 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2021-10-16 03:13:09,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 03:13:09,489 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 states have internal predecessors, (34), 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 03:13:09,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:13:09,490 INFO L225 Difference]: With dead ends: 27 [2021-10-16 03:13:09,490 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 03:13:09,490 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 163.4ms TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-10-16 03:13:09,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 03:13:09,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 03:13:09,491 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 03:13:09,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 03:13:09,491 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-10-16 03:13:09,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:13:09,491 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 03:13:09,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 states have internal predecessors, (34), 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 03:13:09,492 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 03:13:09,492 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 03:13:09,494 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:13:09,495 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:13:09,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-10-16 03:13:09,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-10-16 03:13:09,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-16 03:13:10,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:13:10,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 03:13:10,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:13:10,141 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:13:10,142 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:13:10,143 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:13:10,315 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2021-10-16 03:13:10,315 INFO L857 garLoopResultBuilder]: For program point L19(lines 19 22) no Hoare annotation was computed. [2021-10-16 03:13:10,315 INFO L853 garLoopResultBuilder]: At program point L19-2(line 40) the Hoare annotation is: false [2021-10-16 03:13:10,316 INFO L857 garLoopResultBuilder]: For program point L19-3(lines 19 22) no Hoare annotation was computed. [2021-10-16 03:13:10,316 INFO L860 garLoopResultBuilder]: At program point L19-5(lines 18 24) the Hoare annotation is: true [2021-10-16 03:13:10,316 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 03:13:10,316 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 03:13:10,316 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 03:13:10,316 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2021-10-16 03:13:10,316 INFO L857 garLoopResultBuilder]: For program point L20(lines 20 21) no Hoare annotation was computed. [2021-10-16 03:13:10,317 INFO L857 garLoopResultBuilder]: For program point L20-1(lines 20 21) no Hoare annotation was computed. [2021-10-16 03:13:10,317 INFO L860 garLoopResultBuilder]: At program point L49(lines 26 50) the Hoare annotation is: true [2021-10-16 03:13:10,317 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 03:13:10,317 INFO L857 garLoopResultBuilder]: For program point L38(lines 38 47) no Hoare annotation was computed. [2021-10-16 03:13:10,317 INFO L857 garLoopResultBuilder]: For program point L38-2(lines 38 47) no Hoare annotation was computed. [2021-10-16 03:13:10,317 INFO L857 garLoopResultBuilder]: For program point L34-1(lines 34 37) no Hoare annotation was computed. [2021-10-16 03:13:10,318 INFO L853 garLoopResultBuilder]: At program point L34-3(lines 34 37) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~q~0 (_ bv0 32)) (= ULTIMATE.start_main_~b~0 (_ bv1 32)) (= ~counter~0 (_ bv0 32)) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~A~0)) (and (= ~counter~0 (_ bv1 32)) (= (bvadd (bvmul ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~A~0))) [2021-10-16 03:13:10,318 INFO L857 garLoopResultBuilder]: For program point L43(lines 43 46) no Hoare annotation was computed. [2021-10-16 03:13:10,318 INFO L857 garLoopResultBuilder]: For program point L43-2(lines 26 50) no Hoare annotation was computed. [2021-10-16 03:13:10,318 INFO L857 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2021-10-16 03:13:10,323 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 03:13:10,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 03:13:10 BoogieIcfgContainer [2021-10-16 03:13:10,338 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 03:13:10,339 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 03:13:10,339 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 03:13:10,339 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 03:13:10,340 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:13:04" (3/4) ... [2021-10-16 03:13:10,343 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 03:13:10,355 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-16 03:13:10,355 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-16 03:13:10,356 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 03:13:10,356 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 03:13:10,399 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 03:13:10,399 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 03:13:10,401 INFO L168 Benchmark]: Toolchain (without parser) took 6284.38 ms. Allocated memory was 60.8 MB in the beginning and 88.1 MB in the end (delta: 27.3 MB). Free memory was 40.9 MB in the beginning and 32.7 MB in the end (delta: 8.2 MB). Peak memory consumption was 35.0 MB. Max. memory is 16.1 GB. [2021-10-16 03:13:10,401 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 60.8 MB. Free memory is still 42.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:13:10,402 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.31 ms. Allocated memory is still 60.8 MB. Free memory was 40.7 MB in the beginning and 44.4 MB in the end (delta: -3.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 03:13:10,403 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.63 ms. Allocated memory is still 60.8 MB. Free memory was 44.2 MB in the beginning and 42.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:13:10,403 INFO L168 Benchmark]: Boogie Preprocessor took 24.43 ms. Allocated memory is still 60.8 MB. Free memory was 42.8 MB in the beginning and 41.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:13:10,404 INFO L168 Benchmark]: RCFGBuilder took 373.44 ms. Allocated memory is still 60.8 MB. Free memory was 41.5 MB in the beginning and 31.9 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 03:13:10,404 INFO L168 Benchmark]: TraceAbstraction took 5427.62 ms. Allocated memory was 60.8 MB in the beginning and 88.1 MB in the end (delta: 27.3 MB). Free memory was 31.3 MB in the beginning and 35.4 MB in the end (delta: -4.1 MB). Peak memory consumption was 25.6 MB. Max. memory is 16.1 GB. [2021-10-16 03:13:10,405 INFO L168 Benchmark]: Witness Printer took 60.26 ms. Allocated memory is still 88.1 MB. Free memory was 35.4 MB in the beginning and 32.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:13:10,408 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 60.8 MB. Free memory is still 42.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 354.31 ms. Allocated memory is still 60.8 MB. Free memory was 40.7 MB in the beginning and 44.4 MB in the end (delta: -3.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.63 ms. Allocated memory is still 60.8 MB. Free memory was 44.2 MB in the beginning and 42.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.43 ms. Allocated memory is still 60.8 MB. Free memory was 42.8 MB in the beginning and 41.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 373.44 ms. Allocated memory is still 60.8 MB. Free memory was 41.5 MB in the beginning and 31.9 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5427.62 ms. Allocated memory was 60.8 MB in the beginning and 88.1 MB in the end (delta: 27.3 MB). Free memory was 31.3 MB in the beginning and 35.4 MB in the end (delta: -4.1 MB). Peak memory consumption was 25.6 MB. Max. memory is 16.1 GB. * Witness Printer took 60.26 ms. Allocated memory is still 88.1 MB. Free memory was 35.4 MB in the beginning and 32.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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: 5348.0ms, OverallIterations: 5, TraceHistogramMax: 3, EmptinessCheckTime: 24.0ms, AutomataDifference: 850.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 207.7ms, InitialAbstractionConstructionTime: 9.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 83 SDtfs, 48 SDslu, 172 SDs, 0 SdLazy, 103 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 442.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 150 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 766.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=3, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 42.2ms AutomataMinimizationTime, 5 MinimizatonAttempts, 16 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 28 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 39.7ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 162.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 88.8ms SsaConstructionTime, 231.4ms SatisfiabilityAnalysisTime, 1881.0ms InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 144 ConstructedInterpolants, 0 QuantifiedInterpolants, 457 SizeOfPredicates, 10 NumberOfNonLiveVariables, 259 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 25/42 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 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((q == 0bv32 && b == 1bv32) && counter == 0bv32) && r == A) || (counter == 1bv32 && ~bvadd64(~bvmul32(q, b), r) == A) RESULT: Ultimate proved your program to be correct! [2021-10-16 03:13:10,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a17e313-aa20-4623-a6b7-94cb90252f2b/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...