./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound1.c --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_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/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_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/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_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/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 3e8b2633622084f06b754f22cb180cb188cb0d4f .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/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_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/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_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/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 3e8b2633622084f06b754f22cb180cb188cb0d4f ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:56:22,105 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:56:22,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:56:22,138 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:56:22,139 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:56:22,140 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:56:22,142 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:56:22,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:56:22,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:56:22,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:56:22,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:56:22,151 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:56:22,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:56:22,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:56:22,154 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:56:22,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:56:22,157 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:56:22,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:56:22,161 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:56:22,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:56:22,166 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:56:22,168 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:56:22,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:56:22,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:56:22,174 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:56:22,175 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:56:22,175 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:56:22,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:56:22,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:56:22,179 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:56:22,179 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:56:22,180 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:56:22,181 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:56:22,182 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:56:22,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:56:22,183 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:56:22,184 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:56:22,184 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:56:22,185 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:56:22,186 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:56:22,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:56:22,188 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:56:22,220 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:56:22,221 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:56:22,222 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:56:22,222 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:56:22,222 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:56:22,222 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:56:22,222 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:56:22,223 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:56:22,223 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:56:22,223 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:56:22,223 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:56:22,223 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:56:22,224 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:56:22,224 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:56:22,224 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:56:22,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:56:22,225 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:56:22,225 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:56:22,226 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:56:22,236 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:56:22,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:56:22,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:56:22,236 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:56:22,236 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:56:22,237 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:56:22,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:56:22,237 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:56:22,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:56:22,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:56:22,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:56:22,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:56:22,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:56:22,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:56:22,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:56:22,239 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:56:22,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:56:22,239 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:56:22,239 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:56:22,239 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:56:22,240 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_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e8b2633622084f06b754f22cb180cb188cb0d4f [2021-10-16 02:56:22,468 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:56:22,488 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:56:22,491 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:56:22,492 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:56:22,493 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:56:22,494 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound1.c [2021-10-16 02:56:22,564 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/data/4d71a5cde/aa9ec1be0c394502821bf5b0144e42d3/FLAGd1c93f323 [2021-10-16 02:56:23,012 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:56:23,013 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound1.c [2021-10-16 02:56:23,025 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/data/4d71a5cde/aa9ec1be0c394502821bf5b0144e42d3/FLAGd1c93f323 [2021-10-16 02:56:23,401 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/data/4d71a5cde/aa9ec1be0c394502821bf5b0144e42d3 [2021-10-16 02:56:23,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:56:23,405 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:56:23,417 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:56:23,418 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:56:23,421 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:56:23,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:56:23" (1/1) ... [2021-10-16 02:56:23,423 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69b25af0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:23, skipping insertion in model container [2021-10-16 02:56:23,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:56:23" (1/1) ... [2021-10-16 02:56:23,429 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:56:23,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:56:23,629 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_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound1.c[489,502] [2021-10-16 02:56:23,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:56:23,673 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:56:23,704 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_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound1.c[489,502] [2021-10-16 02:56:23,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:56:23,737 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:56:23,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:23 WrapperNode [2021-10-16 02:56:23,738 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:56:23,739 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:56:23,739 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:56:23,740 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:56:23,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:23" (1/1) ... [2021-10-16 02:56:23,757 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:23" (1/1) ... [2021-10-16 02:56:23,785 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:56:23,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:56:23,787 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:56:23,788 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:56:23,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:23" (1/1) ... [2021-10-16 02:56:23,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:23" (1/1) ... [2021-10-16 02:56:23,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:23" (1/1) ... [2021-10-16 02:56:23,812 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:23" (1/1) ... [2021-10-16 02:56:23,819 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:23" (1/1) ... [2021-10-16 02:56:23,837 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:23" (1/1) ... [2021-10-16 02:56:23,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:23" (1/1) ... [2021-10-16 02:56:23,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:56:23,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:56:23,850 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:56:23,853 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:56:23,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:23" (1/1) ... [2021-10-16 02:56:23,863 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:56:23,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:56:23,897 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:56:23,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:56:23,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:56:23,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:56:23,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:56:23,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:56:24,420 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:56:24,421 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2021-10-16 02:56:24,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:56:24 BoogieIcfgContainer [2021-10-16 02:56:24,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:56:24,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:56:24,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:56:24,430 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:56:24,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:56:23" (1/3) ... [2021-10-16 02:56:24,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@691aa2a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:56:24, skipping insertion in model container [2021-10-16 02:56:24,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:23" (2/3) ... [2021-10-16 02:56:24,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@691aa2a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:56:24, skipping insertion in model container [2021-10-16 02:56:24,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:56:24" (3/3) ... [2021-10-16 02:56:24,435 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_unwindbound1.c [2021-10-16 02:56:24,442 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:56:24,442 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-16 02:56:24,538 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:56:24,573 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:56:24,573 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-16 02:56:24,608 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 25 states have (on average 1.68) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:24,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 02:56:24,614 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:56:24,615 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 02:56:24,618 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-16 02:56:24,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:56:24,625 INFO L82 PathProgramCache]: Analyzing trace with hash 150261929, now seen corresponding path program 1 times [2021-10-16 02:56:24,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:56:24,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990858841] [2021-10-16 02:56:24,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:56:24,647 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:56:24,753 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 02:56:24,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1766817709] [2021-10-16 02:56:24,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:56:24,754 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:56:24,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:56:24,757 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:56:24,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 02:56:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:56:24,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 02:56:24,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:56:24,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:56:24,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:56:25,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:56:25,172 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:56:25,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990858841] [2021-10-16 02:56:25,172 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:56:25,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766817709] [2021-10-16 02:56:25,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766817709] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:56:25,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:56:25,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:56:25,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763654149] [2021-10-16 02:56:25,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:56:25,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:56:25,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:56:25,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:56:25,209 INFO L87 Difference]: Start difference. First operand has 33 states, 25 states have (on average 1.68) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 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 02:56:25,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:56:25,359 INFO L93 Difference]: Finished difference Result 93 states and 120 transitions. [2021-10-16 02:56:25,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:56:25,362 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 5 [2021-10-16 02:56:25,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:56:25,372 INFO L225 Difference]: With dead ends: 93 [2021-10-16 02:56:25,373 INFO L226 Difference]: Without dead ends: 57 [2021-10-16 02:56:25,376 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.5ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:56:25,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-16 02:56:25,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 45. [2021-10-16 02:56:25,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 38 states have (on average 1.368421052631579) internal successors, (52), 44 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:25,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2021-10-16 02:56:25,416 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 5 [2021-10-16 02:56:25,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:56:25,417 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2021-10-16 02:56:25,417 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 02:56:25,417 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2021-10-16 02:56:25,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 02:56:25,418 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:56:25,418 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 02:56:25,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:56:25,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-16 02:56:25,622 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-16 02:56:25,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:56:25,623 INFO L82 PathProgramCache]: Analyzing trace with hash 363136678, now seen corresponding path program 1 times [2021-10-16 02:56:25,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:56:25,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356097167] [2021-10-16 02:56:25,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:56:25,624 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:56:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:56:25,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:56:25,750 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:56:25,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356097167] [2021-10-16 02:56:25,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356097167] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:56:25,751 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:56:25,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:56:25,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722508156] [2021-10-16 02:56:25,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:56:25,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:56:25,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:56:25,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:56:25,755 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 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 02:56:25,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:56:25,773 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2021-10-16 02:56:25,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:56:25,773 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 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 02:56:25,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:56:25,774 INFO L225 Difference]: With dead ends: 59 [2021-10-16 02:56:25,775 INFO L226 Difference]: Without dead ends: 45 [2021-10-16 02:56:25,776 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.1ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:56:25,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-16 02:56:25,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-10-16 02:56:25,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 38 states have (on average 1.3421052631578947) internal successors, (51), 44 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:25,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2021-10-16 02:56:25,783 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 6 [2021-10-16 02:56:25,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:56:25,792 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2021-10-16 02:56:25,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 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 02:56:25,793 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2021-10-16 02:56:25,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-16 02:56:25,793 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:56:25,793 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:56:25,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:56:25,794 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-16 02:56:25,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:56:25,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1627018292, now seen corresponding path program 1 times [2021-10-16 02:56:25,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:56:25,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275070861] [2021-10-16 02:56:25,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:56:25,796 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:56:25,812 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 02:56:25,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1137229334] [2021-10-16 02:56:25,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:56:25,813 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:56:25,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:56:25,814 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:56:25,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-16 02:56:25,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:56:25,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-16 02:56:25,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:56:26,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:56:26,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:56:26,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:56:26,173 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:56:26,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275070861] [2021-10-16 02:56:26,173 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:56:26,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137229334] [2021-10-16 02:56:26,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137229334] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:56:26,179 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:56:26,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:56:26,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806342624] [2021-10-16 02:56:26,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:56:26,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:56:26,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:56:26,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:56:26,184 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 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 02:56:26,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:56:26,298 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2021-10-16 02:56:26,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:56:26,298 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 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 7 [2021-10-16 02:56:26,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:56:26,305 INFO L225 Difference]: With dead ends: 57 [2021-10-16 02:56:26,305 INFO L226 Difference]: Without dead ends: 55 [2021-10-16 02:56:26,306 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.7ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:56:26,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-10-16 02:56:26,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 45. [2021-10-16 02:56:26,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 44 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:26,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2021-10-16 02:56:26,328 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 7 [2021-10-16 02:56:26,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:56:26,328 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2021-10-16 02:56:26,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 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 02:56:26,329 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2021-10-16 02:56:26,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 02:56:26,330 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:56:26,331 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:56:26,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:56:26,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:56:26,553 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-16 02:56:26,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:56:26,554 INFO L82 PathProgramCache]: Analyzing trace with hash -196326513, now seen corresponding path program 1 times [2021-10-16 02:56:26,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:56:26,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422503950] [2021-10-16 02:56:26,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:56:26,555 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:56:26,575 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 02:56:26,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1017976541] [2021-10-16 02:56:26,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:56:26,580 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:56:26,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:56:26,582 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:56:26,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-16 02:56:26,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:56:26,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-16 02:56:26,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:56:26,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:56:26,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:56:26,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:56:26,958 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:56:26,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422503950] [2021-10-16 02:56:26,959 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:56:26,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017976541] [2021-10-16 02:56:26,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017976541] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:56:26,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:56:26,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:56:26,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19860229] [2021-10-16 02:56:26,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:56:26,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:56:26,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:56:26,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:56:26,963 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:27,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:56:27,061 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2021-10-16 02:56:27,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:56:27,062 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-16 02:56:27,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:56:27,064 INFO L225 Difference]: With dead ends: 58 [2021-10-16 02:56:27,064 INFO L226 Difference]: Without dead ends: 50 [2021-10-16 02:56:27,065 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.6ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:56:27,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-16 02:56:27,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 43. [2021-10-16 02:56:27,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 42 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:27,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2021-10-16 02:56:27,081 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 9 [2021-10-16 02:56:27,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:56:27,081 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2021-10-16 02:56:27,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:27,085 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2021-10-16 02:56:27,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-16 02:56:27,085 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:56:27,085 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:56:27,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:56:27,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:56:27,317 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-16 02:56:27,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:56:27,317 INFO L82 PathProgramCache]: Analyzing trace with hash 987236889, now seen corresponding path program 1 times [2021-10-16 02:56:27,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:56:27,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468983966] [2021-10-16 02:56:27,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:56:27,318 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:56:27,334 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 02:56:27,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1032401153] [2021-10-16 02:56:27,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:56:27,335 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:56:27,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:56:27,336 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:56:27,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-16 02:56:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:56:27,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:56:27,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:56:27,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:56:27,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:56:27,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:56:27,522 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:56:27,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468983966] [2021-10-16 02:56:27,526 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:56:27,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032401153] [2021-10-16 02:56:27,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032401153] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:56:27,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:56:27,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-16 02:56:27,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581441990] [2021-10-16 02:56:27,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:56:27,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:56:27,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:56:27,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:56:27,533 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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 02:56:27,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:56:27,605 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2021-10-16 02:56:27,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:56:27,606 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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 12 [2021-10-16 02:56:27,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:56:27,607 INFO L225 Difference]: With dead ends: 59 [2021-10-16 02:56:27,607 INFO L226 Difference]: Without dead ends: 57 [2021-10-16 02:56:27,607 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:56:27,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-16 02:56:27,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 45. [2021-10-16 02:56:27,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 38 states have (on average 1.236842105263158) internal successors, (47), 44 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:27,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2021-10-16 02:56:27,613 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 12 [2021-10-16 02:56:27,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:56:27,613 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2021-10-16 02:56:27,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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 02:56:27,614 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2021-10-16 02:56:27,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-16 02:56:27,614 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:56:27,614 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:56:27,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:56:27,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:56:27,834 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-16 02:56:27,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:56:27,834 INFO L82 PathProgramCache]: Analyzing trace with hash 599849724, now seen corresponding path program 1 times [2021-10-16 02:56:27,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:56:27,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5842570] [2021-10-16 02:56:27,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:56:27,835 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:56:27,847 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 02:56:27,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [587246081] [2021-10-16 02:56:27,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:56:27,848 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:56:27,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:56:27,849 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:56:27,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-16 02:56:27,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:56:27,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:56:27,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:56:28,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:56:28,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:56:28,079 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:56:28,079 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:56:28,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5842570] [2021-10-16 02:56:28,079 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:56:28,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587246081] [2021-10-16 02:56:28,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587246081] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:56:28,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1144144263] [2021-10-16 02:56:28,104 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-10-16 02:56:28,104 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:56:28,109 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:56:28,115 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:56:28,116 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:56:28,161 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.2 percent of original size [2021-10-16 02:56:28,166 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:56:28,167 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:56:28,168 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:56:28,169 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:56:28,170 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:56:28,170 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-16 02:56:28,175 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 177 [2021-10-16 02:56:28,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:56:28,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:56:28,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:56:28,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-16 02:56:28,253 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:56:28,254 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 02:56:28,255 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:56:28,255 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 02:56:28,256 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 02:56:28,268 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:56:28,269 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:56:28,269 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:56:28,270 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:56:28,270 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:56:28,270 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-16 02:56:28,272 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:56:28,307 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:56:28,314 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.0 percent of original size [2021-10-16 02:56:28,321 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-10-16 02:56:28,321 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-16 02:56:28,322 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:330, output treesize:162 [2021-10-16 02:56:28,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:56:28,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:56:28,538 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#valid_14| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-16 02:56:28,543 INFO L168 Benchmark]: Toolchain (without parser) took 5136.58 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 65.9 MB in the beginning and 72.8 MB in the end (delta: -6.8 MB). Peak memory consumption was 50.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:56:28,543 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 88.1 MB. Free memory is still 60.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:56:28,543 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.89 ms. Allocated memory is still 88.1 MB. Free memory was 65.7 MB in the beginning and 64.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:56:28,544 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.72 ms. Allocated memory is still 88.1 MB. Free memory was 64.3 MB in the beginning and 62.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:56:28,544 INFO L168 Benchmark]: Boogie Preprocessor took 61.92 ms. Allocated memory is still 88.1 MB. Free memory was 62.6 MB in the beginning and 61.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:56:28,545 INFO L168 Benchmark]: RCFGBuilder took 574.94 ms. Allocated memory is still 88.1 MB. Free memory was 61.4 MB in the beginning and 46.4 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:56:28,545 INFO L168 Benchmark]: TraceAbstraction took 4114.63 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 46.0 MB in the beginning and 72.8 MB in the end (delta: -26.8 MB). Peak memory consumption was 33.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:56:28,548 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 88.1 MB. Free memory is still 60.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 320.89 ms. Allocated memory is still 88.1 MB. Free memory was 65.7 MB in the beginning and 64.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.72 ms. Allocated memory is still 88.1 MB. Free memory was 64.3 MB in the beginning and 62.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 61.92 ms. Allocated memory is still 88.1 MB. Free memory was 62.6 MB in the beginning and 61.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 574.94 ms. Allocated memory is still 88.1 MB. Free memory was 61.4 MB in the beginning and 46.4 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4114.63 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 46.0 MB in the beginning and 72.8 MB in the end (delta: -26.8 MB). Peak memory consumption was 33.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#valid_14| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_14|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-16 02:56:28,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/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 02:56:31,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:56:31,386 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:56:31,429 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:56:31,430 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:56:31,431 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:56:31,433 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:56:31,436 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:56:31,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:56:31,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:56:31,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:56:31,443 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:56:31,444 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:56:31,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:56:31,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:56:31,449 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:56:31,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:56:31,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:56:31,455 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:56:31,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:56:31,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:56:31,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:56:31,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:56:31,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:56:31,469 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:56:31,469 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:56:31,473 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:56:31,477 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:56:31,478 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:56:31,480 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:56:31,480 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:56:31,482 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:56:31,483 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:56:31,485 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:56:31,486 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:56:31,487 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:56:31,489 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:56:31,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:56:31,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:56:31,491 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:56:31,492 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:56:31,493 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:56:31,554 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:56:31,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:56:31,556 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:56:31,556 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:56:31,556 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:56:31,557 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:56:31,557 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:56:31,557 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:56:31,557 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:56:31,559 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:56:31,560 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:56:31,561 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:56:31,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:56:31,561 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:56:31,561 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:56:31,562 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:56:31,562 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:56:31,562 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:56:31,562 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:56:31,563 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:56:31,563 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:56:31,563 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:56:31,563 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:56:31,564 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:56:31,564 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:56:31,564 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:56:31,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:56:31,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:56:31,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:56:31,565 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:56:31,565 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:56:31,566 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:56:31,566 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:56:31,566 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:56:31,567 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:56:31,567 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_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e8b2633622084f06b754f22cb180cb188cb0d4f [2021-10-16 02:56:31,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:56:31,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:56:32,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:56:32,001 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:56:32,004 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:56:32,005 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound1.c [2021-10-16 02:56:32,100 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/data/2fe61f7fa/c95c91b0167048d5afebfe702f7e40b1/FLAG8c78b407a [2021-10-16 02:56:32,741 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:56:32,741 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound1.c [2021-10-16 02:56:32,751 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/data/2fe61f7fa/c95c91b0167048d5afebfe702f7e40b1/FLAG8c78b407a [2021-10-16 02:56:33,107 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/data/2fe61f7fa/c95c91b0167048d5afebfe702f7e40b1 [2021-10-16 02:56:33,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:56:33,110 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:56:33,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:56:33,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:56:33,116 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:56:33,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:56:33" (1/1) ... [2021-10-16 02:56:33,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14d767d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:33, skipping insertion in model container [2021-10-16 02:56:33,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:56:33" (1/1) ... [2021-10-16 02:56:33,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:56:33,141 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:56:33,303 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_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound1.c[489,502] [2021-10-16 02:56:33,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:56:33,341 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:56:33,354 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_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound1.c[489,502] [2021-10-16 02:56:33,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:56:33,380 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:56:33,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:33 WrapperNode [2021-10-16 02:56:33,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:56:33,382 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:56:33,382 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:56:33,382 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:56:33,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:33" (1/1) ... [2021-10-16 02:56:33,399 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:33" (1/1) ... [2021-10-16 02:56:33,422 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:56:33,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:56:33,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:56:33,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:56:33,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:33" (1/1) ... [2021-10-16 02:56:33,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:33" (1/1) ... [2021-10-16 02:56:33,447 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:33" (1/1) ... [2021-10-16 02:56:33,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:33" (1/1) ... [2021-10-16 02:56:33,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:33" (1/1) ... [2021-10-16 02:56:33,475 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:33" (1/1) ... [2021-10-16 02:56:33,476 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:33" (1/1) ... [2021-10-16 02:56:33,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:56:33,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:56:33,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:56:33,488 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:56:33,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:33" (1/1) ... [2021-10-16 02:56:33,496 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:56:33,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:56:33,531 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:56:33,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:56:33,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:56:33,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:56:33,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:56:33,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:56:35,786 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:56:35,786 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2021-10-16 02:56:35,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:56:35 BoogieIcfgContainer [2021-10-16 02:56:35,788 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:56:35,791 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:56:35,791 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:56:35,794 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:56:35,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:56:33" (1/3) ... [2021-10-16 02:56:35,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5af26b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:56:35, skipping insertion in model container [2021-10-16 02:56:35,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:33" (2/3) ... [2021-10-16 02:56:35,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5af26b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:56:35, skipping insertion in model container [2021-10-16 02:56:35,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:56:35" (3/3) ... [2021-10-16 02:56:35,798 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_unwindbound1.c [2021-10-16 02:56:35,805 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:56:35,805 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-16 02:56:35,866 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:56:35,873 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:56:35,874 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-16 02:56:35,889 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 33 states have (on average 1.606060606060606) internal successors, (53), 40 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:35,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 02:56:35,903 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:56:35,904 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:56:35,905 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-16 02:56:35,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:56:35,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1236199694, now seen corresponding path program 1 times [2021-10-16 02:56:35,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:56:35,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [496664533] [2021-10-16 02:56:35,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:56:35,925 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:56:35,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:56:35,928 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:56:35,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:56:36,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:56:36,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 02:56:36,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:56:36,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:56:36,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:56:36,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:56:36,241 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:56:36,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [496664533] [2021-10-16 02:56:36,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [496664533] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:56:36,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:56:36,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 02:56:36,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184835510] [2021-10-16 02:56:36,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:56:36,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:56:36,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:56:36,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:56:36,281 INFO L87 Difference]: Start difference. First operand has 41 states, 33 states have (on average 1.606060606060606) internal successors, (53), 40 states have internal predecessors, (53), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:36,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:56:36,301 INFO L93 Difference]: Finished difference Result 79 states and 102 transitions. [2021-10-16 02:56:36,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:56:36,302 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-16 02:56:36,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:56:36,312 INFO L225 Difference]: With dead ends: 79 [2021-10-16 02:56:36,312 INFO L226 Difference]: Without dead ends: 37 [2021-10-16 02:56:36,316 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 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 02:56:36,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-16 02:56:36,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-10-16 02:56:36,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.3) internal successors, (39), 36 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:36,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2021-10-16 02:56:36,362 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 10 [2021-10-16 02:56:36,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:56:36,362 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2021-10-16 02:56:36,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:36,363 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2021-10-16 02:56:36,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 02:56:36,364 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:56:36,364 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:56:36,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:56:36,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:56:36,578 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-16 02:56:36,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:56:36,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1988288018, now seen corresponding path program 1 times [2021-10-16 02:56:36,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:56:36,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [459721468] [2021-10-16 02:56:36,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:56:36,581 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:56:36,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:56:36,583 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:56:36,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:56:36,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:56:36,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:56:36,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:56:37,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:56:37,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:56:39,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:56:39,415 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:56:39,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [459721468] [2021-10-16 02:56:39,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [459721468] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:56:39,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:56:39,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 02:56:39,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127048581] [2021-10-16 02:56:39,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:56:39,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:56:39,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:56:39,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:56:39,421 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:44,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:56:44,067 INFO L93 Difference]: Finished difference Result 71 states and 76 transitions. [2021-10-16 02:56:44,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:56:44,085 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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 02:56:44,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:56:44,087 INFO L225 Difference]: With dead ends: 71 [2021-10-16 02:56:44,087 INFO L226 Difference]: Without dead ends: 67 [2021-10-16 02:56:44,088 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1267.4ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:56:44,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-10-16 02:56:44,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 52. [2021-10-16 02:56:44,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 51 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:44,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2021-10-16 02:56:44,102 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 10 [2021-10-16 02:56:44,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:56:44,102 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2021-10-16 02:56:44,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:44,103 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2021-10-16 02:56:44,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-16 02:56:44,104 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:56:44,104 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:56:44,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:56:44,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:56:44,319 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-16 02:56:44,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:56:44,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1507402239, now seen corresponding path program 1 times [2021-10-16 02:56:44,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:56:44,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1061997355] [2021-10-16 02:56:44,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:56:44,335 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:56:44,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:56:44,338 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:56:44,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:56:44,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:56:44,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:56:44,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:56:44,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:56:44,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:56:44,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:56:44,669 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:56:44,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1061997355] [2021-10-16 02:56:44,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1061997355] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:56:44,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:56:44,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-16 02:56:44,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894306091] [2021-10-16 02:56:44,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:56:44,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:56:44,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:56:44,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:56:44,673 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:45,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:56:45,074 INFO L93 Difference]: Finished difference Result 68 states and 77 transitions. [2021-10-16 02:56:45,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:56:45,075 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 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) Word has length 11 [2021-10-16 02:56:45,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:56:45,077 INFO L225 Difference]: With dead ends: 68 [2021-10-16 02:56:45,077 INFO L226 Difference]: Without dead ends: 54 [2021-10-16 02:56:45,078 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 71.9ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:56:45,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-16 02:56:45,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-10-16 02:56:45,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 47 states have (on average 1.3404255319148937) internal successors, (63), 53 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:45,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2021-10-16 02:56:45,090 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 11 [2021-10-16 02:56:45,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:56:45,090 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2021-10-16 02:56:45,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:45,091 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2021-10-16 02:56:45,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-16 02:56:45,092 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:56:45,092 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:56:45,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:56:45,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:56:45,311 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-16 02:56:45,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:56:45,312 INFO L82 PathProgramCache]: Analyzing trace with hash 515817425, now seen corresponding path program 1 times [2021-10-16 02:56:45,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:56:45,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1311834614] [2021-10-16 02:56:45,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:56:45,314 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:56:45,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:56:45,315 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:56:45,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 02:56:45,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:56:45,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 02:56:45,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:56:46,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:56:46,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:56:50,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:56:50,756 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:56:50,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1311834614] [2021-10-16 02:56:50,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1311834614] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:56:50,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:56:50,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 4] imperfect sequences [] total 10 [2021-10-16 02:56:50,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387328042] [2021-10-16 02:56:50,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 02:56:50,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:56:50,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 02:56:50,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:56:50,759 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:58,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:56:58,389 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2021-10-16 02:56:58,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-16 02:56:58,406 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 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) Word has length 12 [2021-10-16 02:56:58,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:56:58,407 INFO L225 Difference]: With dead ends: 66 [2021-10-16 02:56:58,407 INFO L226 Difference]: Without dead ends: 64 [2021-10-16 02:56:58,408 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 4616.8ms TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2021-10-16 02:56:58,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-16 02:56:58,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 54. [2021-10-16 02:56:58,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 47 states have (on average 1.3191489361702127) internal successors, (62), 53 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:58,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2021-10-16 02:56:58,419 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 12 [2021-10-16 02:56:58,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:56:58,420 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2021-10-16 02:56:58,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:58,420 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2021-10-16 02:56:58,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-16 02:56:58,421 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:56:58,422 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:56:58,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:56:58,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:56:58,638 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-16 02:56:58,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:56:58,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1779462740, now seen corresponding path program 1 times [2021-10-16 02:56:58,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:56:58,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [944238694] [2021-10-16 02:56:58,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:56:58,640 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:56:58,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:56:58,642 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:56:58,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 02:56:58,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:56:59,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 02:56:59,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:56:59,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:56:59,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:57:05,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:05,800 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:57:05,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [944238694] [2021-10-16 02:57:05,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [944238694] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:57:05,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:57:05,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 4] imperfect sequences [] total 10 [2021-10-16 02:57:05,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865069478] [2021-10-16 02:57:05,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 02:57:05,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:57:05,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 02:57:05,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:57:05,803 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:57:14,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:57:14,090 INFO L93 Difference]: Finished difference Result 104 states and 121 transitions. [2021-10-16 02:57:14,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-16 02:57:14,102 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-16 02:57:14,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:57:14,104 INFO L225 Difference]: With dead ends: 104 [2021-10-16 02:57:14,104 INFO L226 Difference]: Without dead ends: 96 [2021-10-16 02:57:14,105 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 4834.2ms TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2021-10-16 02:57:14,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-10-16 02:57:14,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 80. [2021-10-16 02:57:14,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 73 states have (on average 1.3424657534246576) internal successors, (98), 79 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:57:14,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 98 transitions. [2021-10-16 02:57:14,129 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 98 transitions. Word has length 14 [2021-10-16 02:57:14,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:57:14,130 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 98 transitions. [2021-10-16 02:57:14,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:57:14,131 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 98 transitions. [2021-10-16 02:57:14,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-16 02:57:14,132 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:57:14,132 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:57:14,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-16 02:57:14,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:57:14,337 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-16 02:57:14,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:57:14,338 INFO L82 PathProgramCache]: Analyzing trace with hash -801918668, now seen corresponding path program 1 times [2021-10-16 02:57:14,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:57:14,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [864576268] [2021-10-16 02:57:14,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:57:14,339 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:57:14,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:57:14,340 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:57:14,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 02:57:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:57:14,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:57:14,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:57:14,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:14,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:57:14,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:14,877 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:57:14,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [864576268] [2021-10-16 02:57:14,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [864576268] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:57:14,877 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:57:14,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-10-16 02:57:14,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078047587] [2021-10-16 02:57:14,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:57:14,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:57:14,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:57:14,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:57:14,880 INFO L87 Difference]: Start difference. First operand 80 states and 98 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:57:16,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:57:16,779 INFO L93 Difference]: Finished difference Result 108 states and 129 transitions. [2021-10-16 02:57:16,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:57:16,780 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 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) Word has length 17 [2021-10-16 02:57:16,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:57:16,784 INFO L225 Difference]: With dead ends: 108 [2021-10-16 02:57:16,784 INFO L226 Difference]: Without dead ends: 106 [2021-10-16 02:57:16,785 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 78.8ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:57:16,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-10-16 02:57:16,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 86. [2021-10-16 02:57:16,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 79 states have (on average 1.3037974683544304) internal successors, (103), 85 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:57:16,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 103 transitions. [2021-10-16 02:57:16,801 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 103 transitions. Word has length 17 [2021-10-16 02:57:16,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:57:16,802 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 103 transitions. [2021-10-16 02:57:16,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:57:16,802 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 103 transitions. [2021-10-16 02:57:16,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-16 02:57:16,803 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:57:16,804 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:57:16,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:57:17,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:57:17,018 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-16 02:57:17,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:57:17,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1844536457, now seen corresponding path program 1 times [2021-10-16 02:57:17,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:57:17,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [51769587] [2021-10-16 02:57:17,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:57:17,019 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:57:17,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:57:17,020 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:57:17,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 02:57:17,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:57:17,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:57:17,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:57:28,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:28,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:57:56,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:57:56,577 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:57:56,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [51769587] [2021-10-16 02:57:56,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [51769587] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:57:56,578 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:57:56,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-16 02:57:56,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218543290] [2021-10-16 02:57:56,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 02:57:56,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:57:56,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 02:57:56,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=65, Unknown=6, NotChecked=0, Total=90 [2021-10-16 02:57:56,580 INFO L87 Difference]: Start difference. First operand 86 states and 103 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 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 02:58:25,909 WARN L207 SmtUtils]: Spent 10.70 s on a formula simplification. DAG size of input: 25 DAG size of output: 18 [2021-10-16 02:58:37,485 WARN L207 SmtUtils]: Spent 9.16 s on a formula simplification. DAG size of input: 25 DAG size of output: 22 [2021-10-16 02:58:48,125 WARN L207 SmtUtils]: Spent 9.96 s on a formula simplification. DAG size of input: 30 DAG size of output: 22 [2021-10-16 02:59:12,908 WARN L207 SmtUtils]: Spent 11.32 s on a formula simplification that was a NOOP. DAG size: 26 [2021-10-16 02:59:31,555 WARN L207 SmtUtils]: Spent 8.95 s on a formula simplification. DAG size of input: 22 DAG size of output: 19 [2021-10-16 02:59:34,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:59:34,307 INFO L93 Difference]: Finished difference Result 131 states and 149 transitions. [2021-10-16 02:59:34,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-16 02:59:34,307 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 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) Word has length 19 [2021-10-16 02:59:34,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:59:34,309 INFO L225 Difference]: With dead ends: 131 [2021-10-16 02:59:34,309 INFO L226 Difference]: Without dead ends: 123 [2021-10-16 02:59:34,310 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 103958.2ms TimeCoverageRelationStatistics Valid=80, Invalid=183, Unknown=9, NotChecked=0, Total=272 [2021-10-16 02:59:34,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-10-16 02:59:34,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 93. [2021-10-16 02:59:34,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 86 states have (on average 1.2906976744186047) internal successors, (111), 92 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:59:34,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 111 transitions. [2021-10-16 02:59:34,329 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 111 transitions. Word has length 19 [2021-10-16 02:59:34,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:59:34,329 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 111 transitions. [2021-10-16 02:59:34,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 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 02:59:34,330 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 111 transitions. [2021-10-16 02:59:34,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-16 02:59:34,331 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:59:34,331 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:59:34,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-16 02:59:34,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:59:34,546 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-16 02:59:34,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:59:34,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1795587856, now seen corresponding path program 1 times [2021-10-16 02:59:34,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:59:34,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1811157182] [2021-10-16 02:59:34,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:59:34,547 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:59:34,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:59:34,548 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:59:34,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-16 02:59:35,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:59:35,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:59:35,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:59:35,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:59:35,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:59:35,436 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:59:35,436 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:59:35,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1811157182] [2021-10-16 02:59:35,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1811157182] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:59:35,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2124489896] [2021-10-16 02:59:35,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:59:35,437 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:59:35,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:59:35,444 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:59:35,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-10-16 02:59:36,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:59:36,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:59:36,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:59:36,375 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:59:36,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:59:36,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:59:36,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2124489896] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:59:36,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827987491] [2021-10-16 02:59:36,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:59:36,507 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:59:36,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:59:36,514 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:59:36,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-16 02:59:36,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:59:37,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:59:37,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:59:37,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:59:37,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:59:37,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:59:37,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827987491] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:59:37,275 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:59:37,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 7 [2021-10-16 02:59:37,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794867415] [2021-10-16 02:59:37,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 02:59:37,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:59:37,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 02:59:37,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:59:37,278 INFO L87 Difference]: Start difference. First operand 93 states and 111 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 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 02:59:37,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:59:37,602 INFO L93 Difference]: Finished difference Result 119 states and 139 transitions. [2021-10-16 02:59:37,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:59:37,603 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 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) Word has length 19 [2021-10-16 02:59:37,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:59:37,604 INFO L225 Difference]: With dead ends: 119 [2021-10-16 02:59:37,604 INFO L226 Difference]: Without dead ends: 41 [2021-10-16 02:59:37,605 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 152.9ms TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:59:37,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-16 02:59:37,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-10-16 02:59:37,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 37 states have (on average 1.135135135135135) internal successors, (42), 40 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:59:37,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2021-10-16 02:59:37,614 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 19 [2021-10-16 02:59:37,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:59:37,614 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2021-10-16 02:59:37,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 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 02:59:37,615 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2021-10-16 02:59:37,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-16 02:59:37,616 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:59:37,616 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:59:37,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-16 02:59:37,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-16 02:59:38,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-10-16 02:59:38,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:59:38,232 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-16 02:59:38,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:59:38,233 INFO L82 PathProgramCache]: Analyzing trace with hash 171335487, now seen corresponding path program 1 times [2021-10-16 02:59:38,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:59:38,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1199448612] [2021-10-16 02:59:38,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:59:38,234 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:59:38,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:59:38,235 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:59:38,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-16 02:59:38,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:59:38,811 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 02:59:39,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:59:39,272 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-16 02:59:39,273 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 02:59:39,274 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:59:39,276 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:59:39,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:59:39,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:59:39,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:59:39,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:59:39,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:59:39,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-16 02:59:39,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:59:39,487 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:59:39,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:59:39 BoogieIcfgContainer [2021-10-16 02:59:39,566 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:59:39,567 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:59:39,567 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:59:39,567 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:59:39,568 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:56:35" (3/4) ... [2021-10-16 02:59:39,570 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-16 02:59:39,645 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:59:39,646 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:59:39,647 INFO L168 Benchmark]: Toolchain (without parser) took 186535.87 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 29.3 MB in the beginning and 22.5 MB in the end (delta: 6.7 MB). Peak memory consumption was 23.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:59:39,648 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 52.4 MB. Free memory is still 33.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:59:39,649 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.26 ms. Allocated memory is still 52.4 MB. Free memory was 29.1 MB in the beginning and 31.8 MB in the end (delta: -2.7 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:59:39,650 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.42 ms. Allocated memory is still 52.4 MB. Free memory was 31.8 MB in the beginning and 30.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:59:39,651 INFO L168 Benchmark]: Boogie Preprocessor took 63.97 ms. Allocated memory is still 52.4 MB. Free memory was 30.1 MB in the beginning and 28.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:59:39,652 INFO L168 Benchmark]: RCFGBuilder took 2300.53 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 28.6 MB in the beginning and 44.4 MB in the end (delta: -15.8 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:59:39,652 INFO L168 Benchmark]: TraceAbstraction took 183775.90 ms. Allocated memory is still 67.1 MB. Free memory was 44.0 MB in the beginning and 25.1 MB in the end (delta: 18.9 MB). Peak memory consumption was 20.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:59:39,652 INFO L168 Benchmark]: Witness Printer took 78.86 ms. Allocated memory is still 67.1 MB. Free memory was 25.1 MB in the beginning and 22.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:59:39,656 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 52.4 MB. Free memory is still 33.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 269.26 ms. Allocated memory is still 52.4 MB. Free memory was 29.1 MB in the beginning and 31.8 MB in the end (delta: -2.7 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.42 ms. Allocated memory is still 52.4 MB. Free memory was 31.8 MB in the beginning and 30.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.97 ms. Allocated memory is still 52.4 MB. Free memory was 30.1 MB in the beginning and 28.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2300.53 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 28.6 MB in the beginning and 44.4 MB in the end (delta: -15.8 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 183775.90 ms. Allocated memory is still 67.1 MB. Free memory was 44.0 MB in the beginning and 25.1 MB in the end (delta: 18.9 MB). Peak memory consumption was 20.4 MB. Max. memory is 16.1 GB. * Witness Printer took 78.86 ms. Allocated memory is still 67.1 MB. Free memory was 25.1 MB in the beginning and 22.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L18] int counter = 0; VAL [counter=0] [L20] long long a, b, p, q, r, s; [L21] int x, y; [L22] x = __VERIFIER_nondet_int() [L23] y = __VERIFIER_nondet_int() [L8] COND FALSE !(!cond) VAL [counter=0] [L8] COND FALSE !(!cond) VAL [counter=0] [L27] a = x [L28] b = y [L29] p = 1 [L30] q = 0 [L31] r = 0 [L32] s = 1 VAL [counter=0] [L34] EXPR counter++ VAL [counter=1] [L34] COND TRUE counter++<1 [L11] COND FALSE !(!(cond)) VAL [counter=1] [L11] COND FALSE !(!(cond)) VAL [counter=1] [L11] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(a != b)) VAL [counter=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=1] [L34] EXPR counter++ VAL [counter=2] [L34] COND FALSE !(counter++<1) [L11] COND TRUE !(cond) VAL [counter=2] [L13] reach_error() VAL [counter=2] - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 183620.0ms, OverallIterations: 9, TraceHistogramMax: 2, EmptinessCheckTime: 25.7ms, AutomataDifference: 121057.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 285 SDtfs, 612 SDslu, 603 SDs, 0 SdLazy, 475 SolverSat, 198 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 41757.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 311 GetRequests, 242 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 114980.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=7, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 130.3ms AutomataMinimizationTime, 8 MinimizatonAttempts, 91 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 100.6ms SsaConstructionTime, 2996.0ms SatisfiabilityAnalysisTime, 55421.7ms InterpolantComputationTime, 170 NumberOfCodeBlocks, 170 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 280 ConstructedInterpolants, 2 QuantifiedInterpolants, 1209 SizeOfPredicates, 47 NumberOfNonLiveVariables, 513 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 20 InterpolantComputations, 14 PerfectInterpolantSequences, 6/18 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-16 02:59:39,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d670e56-1a2d-4d26-bc3b-7beb34c11b94/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...