./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.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_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/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_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/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_34708f51-0258-4082-9e6b-79e69f403ec4/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 06227ec276f1d25f93ba083804945e6bbc61c8e5 .............................................................................................................................................................................................................................................................................................................................................................................. 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_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/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_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/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_34708f51-0258-4082-9e6b-79e69f403ec4/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 06227ec276f1d25f93ba083804945e6bbc61c8e5 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 01:59:45,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 01:59:45,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 01:59:45,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 01:59:45,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 01:59:45,110 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 01:59:45,112 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 01:59:45,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 01:59:45,118 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 01:59:45,119 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 01:59:45,121 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 01:59:45,123 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 01:59:45,124 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 01:59:45,126 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 01:59:45,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 01:59:45,130 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 01:59:45,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 01:59:45,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 01:59:45,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 01:59:45,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 01:59:45,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 01:59:45,143 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 01:59:45,145 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 01:59:45,146 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 01:59:45,151 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 01:59:45,152 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 01:59:45,152 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 01:59:45,154 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 01:59:45,155 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 01:59:45,156 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 01:59:45,157 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 01:59:45,158 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 01:59:45,159 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 01:59:45,161 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 01:59:45,162 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 01:59:45,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 01:59:45,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 01:59:45,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 01:59:45,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 01:59:45,166 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 01:59:45,167 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 01:59:45,168 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 01:59:45,200 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 01:59:45,201 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 01:59:45,202 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 01:59:45,202 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 01:59:45,202 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 01:59:45,203 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 01:59:45,203 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 01:59:45,203 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 01:59:45,203 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 01:59:45,204 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 01:59:45,204 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 01:59:45,204 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 01:59:45,205 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 01:59:45,205 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 01:59:45,205 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 01:59:45,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 01:59:45,206 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 01:59:45,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 01:59:45,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 01:59:45,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 01:59:45,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 01:59:45,208 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 01:59:45,208 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 01:59:45,208 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 01:59:45,208 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 01:59:45,209 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 01:59:45,209 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 01:59:45,209 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 01:59:45,210 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 01:59:45,210 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 01:59:45,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:59:45,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 01:59:45,211 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 01:59:45,211 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 01:59:45,211 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 01:59:45,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 01:59:45,212 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 01:59:45,212 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 01:59:45,212 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 01:59:45,213 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_34708f51-0258-4082-9e6b-79e69f403ec4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06227ec276f1d25f93ba083804945e6bbc61c8e5 [2021-10-16 01:59:45,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 01:59:45,525 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 01:59:45,528 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 01:59:45,529 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 01:59:45,530 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 01:59:45,531 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c [2021-10-16 01:59:45,640 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/data/3e4e1d9e0/609182ce598c4c7e97281e0cbb031a62/FLAG6025a0c88 [2021-10-16 01:59:46,283 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 01:59:46,284 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c [2021-10-16 01:59:46,302 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/data/3e4e1d9e0/609182ce598c4c7e97281e0cbb031a62/FLAG6025a0c88 [2021-10-16 01:59:46,572 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/data/3e4e1d9e0/609182ce598c4c7e97281e0cbb031a62 [2021-10-16 01:59:46,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 01:59:46,577 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 01:59:46,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 01:59:46,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 01:59:46,583 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 01:59:46,584 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:59:46" (1/1) ... [2021-10-16 01:59:46,586 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43d2d05d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:46, skipping insertion in model container [2021-10-16 01:59:46,592 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:59:46" (1/1) ... [2021-10-16 01:59:46,601 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 01:59:46,641 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 01:59:46,922 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_34708f51-0258-4082-9e6b-79e69f403ec4/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c[7920,7933] [2021-10-16 01:59:46,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:59:46,946 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 01:59:47,035 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_34708f51-0258-4082-9e6b-79e69f403ec4/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c[7920,7933] [2021-10-16 01:59:47,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:59:47,057 INFO L208 MainTranslator]: Completed translation [2021-10-16 01:59:47,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:47 WrapperNode [2021-10-16 01:59:47,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 01:59:47,059 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 01:59:47,059 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 01:59:47,060 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 01:59:47,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:47" (1/1) ... [2021-10-16 01:59:47,089 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:47" (1/1) ... [2021-10-16 01:59:47,149 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 01:59:47,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 01:59:47,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 01:59:47,151 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 01:59:47,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:47" (1/1) ... [2021-10-16 01:59:47,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:47" (1/1) ... [2021-10-16 01:59:47,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:47" (1/1) ... [2021-10-16 01:59:47,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:47" (1/1) ... [2021-10-16 01:59:47,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:47" (1/1) ... [2021-10-16 01:59:47,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:47" (1/1) ... [2021-10-16 01:59:47,204 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:47" (1/1) ... [2021-10-16 01:59:47,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 01:59:47,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 01:59:47,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 01:59:47,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 01:59:47,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:47" (1/1) ... [2021-10-16 01:59:47,260 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:59:47,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 01:59:47,314 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 01:59:47,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 01:59:47,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-16 01:59:47,393 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2021-10-16 01:59:47,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 01:59:47,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 01:59:47,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 01:59:47,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 01:59:47,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 01:59:47,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 01:59:48,345 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 01:59:48,345 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-16 01:59:48,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:59:48 BoogieIcfgContainer [2021-10-16 01:59:48,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 01:59:48,350 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 01:59:48,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 01:59:48,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 01:59:48,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:59:46" (1/3) ... [2021-10-16 01:59:48,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13e621e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:59:48, skipping insertion in model container [2021-10-16 01:59:48,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:47" (2/3) ... [2021-10-16 01:59:48,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13e621e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:59:48, skipping insertion in model container [2021-10-16 01:59:48,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:59:48" (3/3) ... [2021-10-16 01:59:48,358 INFO L111 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+cfa-reducer.c [2021-10-16 01:59:48,365 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 01:59:48,365 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 01:59:48,424 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 01:59:48,432 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 01:59:48,432 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 01:59:48,448 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 01:59:48,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 01:59:48,454 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:59:48,455 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 01:59:48,455 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 01:59:48,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:59:48,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1953555076, now seen corresponding path program 1 times [2021-10-16 01:59:48,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:59:48,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848364085] [2021-10-16 01:59:48,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:48,475 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:59:48,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:59:48,912 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 01:59:48,912 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:59:48,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848364085] [2021-10-16 01:59:48,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848364085] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:59:48,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:59:48,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-16 01:59:48,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518956678] [2021-10-16 01:59:48,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 01:59:48,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:59:48,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 01:59:48,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 01:59:48,941 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 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 01:59:49,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:59:49,020 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2021-10-16 01:59:49,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 01:59:49,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 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 01:59:49,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:59:49,032 INFO L225 Difference]: With dead ends: 24 [2021-10-16 01:59:49,032 INFO L226 Difference]: Without dead ends: 14 [2021-10-16 01:59:49,035 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 37.6ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-16 01:59:49,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-16 01:59:49,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 11. [2021-10-16 01:59:49,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 01:59:49,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-10-16 01:59:49,069 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 6 [2021-10-16 01:59:49,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:59:49,069 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-10-16 01:59:49,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 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 01:59:49,070 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-10-16 01:59:49,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 01:59:49,071 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:59:49,071 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-10-16 01:59:49,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 01:59:49,072 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 01:59:49,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:59:49,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1000383431, now seen corresponding path program 1 times [2021-10-16 01:59:49,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:59:49,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257034043] [2021-10-16 01:59:49,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:49,074 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:59:49,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:59:49,346 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:59:49,346 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:59:49,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257034043] [2021-10-16 01:59:49,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257034043] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 01:59:49,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368441303] [2021-10-16 01:59:49,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:49,347 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 01:59:49,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 01:59:49,350 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 01:59:49,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 01:59:49,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:59:49,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-16 01:59:49,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:59:49,871 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:59:49,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:59:50,050 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:59:50,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368441303] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 01:59:50,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [277170397] [2021-10-16 01:59:50,092 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-16 01:59:50,102 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 01:59:50,109 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 01:59:50,117 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 01:59:50,118 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 01:59:50,188 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:59:50,195 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 01:59:50,198 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:59:50,199 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-10-16 01:59:50,200 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 01:59:50,201 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:59:50,202 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-16 01:59:50,209 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 358 [2021-10-16 01:59:50,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 01:59:50,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 01:59:50,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 01:59:50,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 01:59:50,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 01:59:50,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 01:59:50,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 01:59:50,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 01:59:50,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 01:59:50,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 01:59:50,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 01:59:50,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 01:59:50,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 01:59:50,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 01:59:50,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 01:59:50,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 01:59:50,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 01:59:50,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 01:59:50,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 01:59:50,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 01:59:50,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 01:59:50,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 43 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 36 [2021-10-16 01:59:50,389 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:59:50,391 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-16 01:59:50,393 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:59:50,394 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-16 01:59:50,394 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 01:59:50,397 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 01:59:50,457 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:59:50,468 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:59:50,479 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 366 [2021-10-16 01:59:50,481 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-16 01:59:50,481 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:355, output treesize:366 [2021-10-16 01:59:50,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 01:59:50,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 01:59:50,697 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_31| 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 01:59:50,701 INFO L168 Benchmark]: Toolchain (without parser) took 4123.20 ms. Allocated memory was 134.2 MB in the beginning and 184.5 MB in the end (delta: 50.3 MB). Free memory was 101.3 MB in the beginning and 124.8 MB in the end (delta: -23.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:50,702 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 83.9 MB. Free memory is still 38.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 01:59:50,702 INFO L168 Benchmark]: CACSL2BoogieTranslator took 479.20 ms. Allocated memory is still 134.2 MB. Free memory was 101.0 MB in the beginning and 104.1 MB in the end (delta: -3.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:50,703 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.38 ms. Allocated memory is still 134.2 MB. Free memory was 104.1 MB in the beginning and 100.6 MB in the end (delta: 3.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:50,704 INFO L168 Benchmark]: Boogie Preprocessor took 79.18 ms. Allocated memory is still 134.2 MB. Free memory was 100.6 MB in the beginning and 97.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:50,705 INFO L168 Benchmark]: RCFGBuilder took 1117.74 ms. Allocated memory is still 134.2 MB. Free memory was 97.8 MB in the beginning and 74.0 MB in the end (delta: 23.8 MB). Peak memory consumption was 33.4 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:50,705 INFO L168 Benchmark]: TraceAbstraction took 2349.24 ms. Allocated memory was 134.2 MB in the beginning and 184.5 MB in the end (delta: 50.3 MB). Free memory was 73.3 MB in the beginning and 124.8 MB in the end (delta: -51.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 01:59:50,710 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 83.9 MB. Free memory is still 38.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 479.20 ms. Allocated memory is still 134.2 MB. Free memory was 101.0 MB in the beginning and 104.1 MB in the end (delta: -3.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 90.38 ms. Allocated memory is still 134.2 MB. Free memory was 104.1 MB in the beginning and 100.6 MB in the end (delta: 3.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 79.18 ms. Allocated memory is still 134.2 MB. Free memory was 100.6 MB in the beginning and 97.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1117.74 ms. Allocated memory is still 134.2 MB. Free memory was 97.8 MB in the beginning and 74.0 MB in the end (delta: 23.8 MB). Peak memory consumption was 33.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2349.24 ms. Allocated memory was 134.2 MB in the beginning and 184.5 MB in the end (delta: 50.3 MB). Free memory was 73.3 MB in the beginning and 124.8 MB in the end (delta: -51.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#valid_31| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_31|: 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 01:59:50,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/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 01:59:53,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 01:59:53,773 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 01:59:53,841 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 01:59:53,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 01:59:53,849 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 01:59:53,852 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 01:59:53,863 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 01:59:53,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 01:59:53,876 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 01:59:53,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 01:59:53,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 01:59:53,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 01:59:53,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 01:59:53,884 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 01:59:53,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 01:59:53,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 01:59:53,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 01:59:53,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 01:59:53,894 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 01:59:53,897 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 01:59:53,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 01:59:53,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 01:59:53,902 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 01:59:53,907 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 01:59:53,908 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 01:59:53,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 01:59:53,910 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 01:59:53,910 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 01:59:53,912 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 01:59:53,913 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 01:59:53,914 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 01:59:53,915 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 01:59:53,916 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 01:59:53,918 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 01:59:53,918 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 01:59:53,919 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 01:59:53,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 01:59:53,936 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 01:59:53,937 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 01:59:53,939 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 01:59:53,940 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 01:59:53,973 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 01:59:53,973 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 01:59:53,974 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 01:59:53,975 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 01:59:53,975 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 01:59:53,975 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 01:59:53,976 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 01:59:53,978 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 01:59:53,979 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 01:59:53,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 01:59:53,982 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 01:59:53,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 01:59:53,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 01:59:53,983 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 01:59:53,983 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 01:59:53,983 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 01:59:53,984 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 01:59:53,984 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 01:59:53,984 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 01:59:53,985 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 01:59:53,985 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 01:59:53,985 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 01:59:53,986 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 01:59:53,986 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 01:59:53,987 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 01:59:53,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 01:59:53,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:59:53,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 01:59:53,989 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 01:59:53,989 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 01:59:53,989 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 01:59:53,990 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 01:59:53,990 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 01:59:53,990 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 01:59:53,991 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 01:59:53,991 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_34708f51-0258-4082-9e6b-79e69f403ec4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06227ec276f1d25f93ba083804945e6bbc61c8e5 [2021-10-16 01:59:54,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 01:59:54,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 01:59:54,546 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 01:59:54,548 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 01:59:54,549 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 01:59:54,553 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c [2021-10-16 01:59:54,648 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/data/ceec364c1/4de633ca359146c884d5710723a072d8/FLAGb407b32d0 [2021-10-16 01:59:55,391 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 01:59:55,392 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c [2021-10-16 01:59:55,406 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/data/ceec364c1/4de633ca359146c884d5710723a072d8/FLAGb407b32d0 [2021-10-16 01:59:55,699 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/data/ceec364c1/4de633ca359146c884d5710723a072d8 [2021-10-16 01:59:55,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 01:59:55,704 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 01:59:55,706 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 01:59:55,706 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 01:59:55,711 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 01:59:55,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:59:55" (1/1) ... [2021-10-16 01:59:55,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@681ff12a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:55, skipping insertion in model container [2021-10-16 01:59:55,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:59:55" (1/1) ... [2021-10-16 01:59:55,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 01:59:55,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 01:59:56,123 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_34708f51-0258-4082-9e6b-79e69f403ec4/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c[7920,7933] [2021-10-16 01:59:56,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:59:56,227 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 01:59:56,373 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_34708f51-0258-4082-9e6b-79e69f403ec4/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c[7920,7933] [2021-10-16 01:59:56,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:59:56,397 INFO L208 MainTranslator]: Completed translation [2021-10-16 01:59:56,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:56 WrapperNode [2021-10-16 01:59:56,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 01:59:56,399 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 01:59:56,399 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 01:59:56,400 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 01:59:56,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:56" (1/1) ... [2021-10-16 01:59:56,431 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:56" (1/1) ... [2021-10-16 01:59:56,500 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 01:59:56,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 01:59:56,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 01:59:56,504 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 01:59:56,515 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:56" (1/1) ... [2021-10-16 01:59:56,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:56" (1/1) ... [2021-10-16 01:59:56,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:56" (1/1) ... [2021-10-16 01:59:56,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:56" (1/1) ... [2021-10-16 01:59:56,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:56" (1/1) ... [2021-10-16 01:59:56,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:56" (1/1) ... [2021-10-16 01:59:56,583 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:56" (1/1) ... [2021-10-16 01:59:56,590 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 01:59:56,591 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 01:59:56,591 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 01:59:56,591 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 01:59:56,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:56" (1/1) ... [2021-10-16 01:59:56,601 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:59:56,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 01:59:56,630 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 01:59:56,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 01:59:56,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-16 01:59:56,696 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2021-10-16 01:59:56,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 01:59:56,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-10-16 01:59:56,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 01:59:56,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 01:59:56,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 01:59:56,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 01:59:56,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 01:59:57,876 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 01:59:57,876 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-16 01:59:57,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:59:57 BoogieIcfgContainer [2021-10-16 01:59:57,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 01:59:57,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 01:59:57,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 01:59:57,886 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 01:59:57,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:59:55" (1/3) ... [2021-10-16 01:59:57,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be7749f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:59:57, skipping insertion in model container [2021-10-16 01:59:57,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:56" (2/3) ... [2021-10-16 01:59:57,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be7749f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:59:57, skipping insertion in model container [2021-10-16 01:59:57,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:59:57" (3/3) ... [2021-10-16 01:59:57,890 INFO L111 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+cfa-reducer.c [2021-10-16 01:59:57,896 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 01:59:57,897 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 01:59:57,970 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 01:59:57,981 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 01:59:57,982 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 01:59:58,001 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 01:59:58,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 01:59:58,022 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:59:58,023 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:59:58,024 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 01:59:58,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:59:58,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1180906794, now seen corresponding path program 1 times [2021-10-16 01:59:58,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:59:58,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1636914216] [2021-10-16 01:59:58,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:58,053 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:59:58,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:59:58,060 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:59:58,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 01:59:58,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:59:58,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 01:59:58,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:59:58,604 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 01:59:58,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:59:58,687 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 01:59:58,688 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:59:58,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1636914216] [2021-10-16 01:59:58,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1636914216] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:59:58,689 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:59:58,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 01:59:58,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592685034] [2021-10-16 01:59:58,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 01:59:58,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:59:58,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 01:59:58,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 01:59:58,722 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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 01:59:58,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:59:58,832 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2021-10-16 01:59:58,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 01:59:58,834 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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 9 [2021-10-16 01:59:58,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:59:58,844 INFO L225 Difference]: With dead ends: 38 [2021-10-16 01:59:58,844 INFO L226 Difference]: Without dead ends: 24 [2021-10-16 01:59:58,847 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 64.6ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-16 01:59:58,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-16 01:59:58,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 13. [2021-10-16 01:59:58,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 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 01:59:58,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-10-16 01:59:58,884 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2021-10-16 01:59:58,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:59:58,885 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-10-16 01:59:58,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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 01:59:58,885 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-10-16 01:59:58,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 01:59:58,886 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:59:58,886 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:59:58,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 01:59:59,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:59:59,103 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 01:59:59,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:59:59,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1181383450, now seen corresponding path program 1 times [2021-10-16 01:59:59,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:59:59,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1945104572] [2021-10-16 01:59:59,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:59,106 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:59:59,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:59:59,109 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:59:59,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 01:59:59,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:59:59,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 01:59:59,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:59:59,494 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 01:59:59,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:59:59,555 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 01:59:59,556 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:59:59,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1945104572] [2021-10-16 01:59:59,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1945104572] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:59:59,557 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:59:59,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 01:59:59,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108556317] [2021-10-16 01:59:59,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 01:59:59,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:59:59,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 01:59:59,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 01:59:59,561 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 01:59:59,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:59:59,672 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2021-10-16 01:59:59,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 01:59:59,674 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-16 01:59:59,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:59:59,675 INFO L225 Difference]: With dead ends: 37 [2021-10-16 01:59:59,675 INFO L226 Difference]: Without dead ends: 27 [2021-10-16 01:59:59,676 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 69.5ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-16 01:59:59,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-16 01:59:59,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2021-10-16 01:59:59,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 01:59:59,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-10-16 01:59:59,683 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 9 [2021-10-16 01:59:59,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:59:59,684 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-10-16 01:59:59,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 01:59:59,684 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-10-16 01:59:59,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-16 01:59:59,686 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:59:59,686 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-16 01:59:59,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 01:59:59,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:59:59,909 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 01:59:59,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:59:59,910 INFO L82 PathProgramCache]: Analyzing trace with hash -192165078, now seen corresponding path program 1 times [2021-10-16 01:59:59,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:59:59,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [985397444] [2021-10-16 01:59:59,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:59,912 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:59:59,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:59:59,920 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:59:59,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:00:00,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:00:00,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:00:00,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:00:00,440 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:00,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:00:00,622 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:00,622 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:00:00,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [985397444] [2021-10-16 02:00:00,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [985397444] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:00:00,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1715814586] [2021-10-16 02:00:00,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:00:00,623 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:00:00,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:00:00,626 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:00:00,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-16 02:00:01,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:00:01,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:00:01,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:00:01,300 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:01,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:00:01,409 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:01,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1715814586] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:00:01,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449568332] [2021-10-16 02:00:01,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:00:01,410 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:00:01,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:00:01,412 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:00:01,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-16 02:00:01,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:00:01,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:00:01,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:00:01,897 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:01,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:00:02,242 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:02,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449568332] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:00:02,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:00:02,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 7, 8] total 14 [2021-10-16 02:00:02,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454336965] [2021-10-16 02:00:02,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-16 02:00:02,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:00:02,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-16 02:00:02,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-10-16 02:00:02,246 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 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 02:00:02,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:00:02,971 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2021-10-16 02:00:02,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-16 02:00:02,973 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 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) Word has length 21 [2021-10-16 02:00:02,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:00:02,974 INFO L225 Difference]: With dead ends: 61 [2021-10-16 02:00:02,974 INFO L226 Difference]: Without dead ends: 51 [2021-10-16 02:00:02,975 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 479.8ms TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2021-10-16 02:00:02,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-16 02:00:02,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 46. [2021-10-16 02:00:02,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 45 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 02:00:02,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2021-10-16 02:00:02,985 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 21 [2021-10-16 02:00:02,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:00:02,986 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2021-10-16 02:00:02,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 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 02:00:02,986 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2021-10-16 02:00:02,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-16 02:00:02,988 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:00:02,989 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2021-10-16 02:00:02,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:00:03,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:00:03,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-16 02:00:03,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:00:03,599 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:00:03,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:00:03,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1234936650, now seen corresponding path program 2 times [2021-10-16 02:00:03,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:00:03,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [88267719] [2021-10-16 02:00:03,601 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:00:03,601 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:00:03,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:00:03,603 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:00:03,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 02:00:05,828 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:00:05,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:00:05,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 02:00:05,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:00:06,172 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 12 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:06,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:00:06,629 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 12 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:06,630 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:00:06,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [88267719] [2021-10-16 02:00:06,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [88267719] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:00:06,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1150261746] [2021-10-16 02:00:06,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:00:06,631 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:00:06,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:00:06,637 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:00:06,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-10-16 02:00:08,018 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:00:08,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:00:08,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 02:00:08,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:00:08,271 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 12 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:08,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:00:08,506 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 12 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:08,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1150261746] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:00:08,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242259920] [2021-10-16 02:00:08,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:00:08,507 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:00:08,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:00:08,509 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:00:08,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-16 02:00:09,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:00:09,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:00:09,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-16 02:00:09,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:00:09,423 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 12 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:09,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:00:10,296 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 12 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:10,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242259920] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:00:10,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:00:10,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 11, 12] total 26 [2021-10-16 02:00:10,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000797398] [2021-10-16 02:00:10,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-16 02:00:10,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:00:10,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-16 02:00:10,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=464, Unknown=0, NotChecked=0, Total=650 [2021-10-16 02:00:10,300 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand has 26 states, 26 states have (on average 4.6923076923076925) internal successors, (122), 26 states have internal predecessors, (122), 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 02:00:12,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:00:12,142 INFO L93 Difference]: Finished difference Result 109 states and 119 transitions. [2021-10-16 02:00:12,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-16 02:00:12,143 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.6923076923076925) internal successors, (122), 26 states have internal predecessors, (122), 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 45 [2021-10-16 02:00:12,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:00:12,145 INFO L225 Difference]: With dead ends: 109 [2021-10-16 02:00:12,146 INFO L226 Difference]: Without dead ends: 99 [2021-10-16 02:00:12,148 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1198.2ms TimeCoverageRelationStatistics Valid=519, Invalid=1203, Unknown=0, NotChecked=0, Total=1722 [2021-10-16 02:00:12,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-10-16 02:00:12,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 94. [2021-10-16 02:00:12,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.021505376344086) internal successors, (95), 93 states have internal predecessors, (95), 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 02:00:12,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2021-10-16 02:00:12,163 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 45 [2021-10-16 02:00:12,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:00:12,164 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2021-10-16 02:00:12,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.6923076923076925) internal successors, (122), 26 states have internal predecessors, (122), 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 02:00:12,165 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2021-10-16 02:00:12,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-10-16 02:00:12,169 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:00:12,169 INFO L512 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1] [2021-10-16 02:00:12,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-16 02:00:12,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:00:12,593 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2021-10-16 02:00:12,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:00:12,789 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:00:12,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:00:12,790 INFO L82 PathProgramCache]: Analyzing trace with hash -824167542, now seen corresponding path program 3 times [2021-10-16 02:00:12,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:00:12,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [363606643] [2021-10-16 02:00:12,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 02:00:12,792 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:00:12,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:00:12,794 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:00:12,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-16 02:00:15,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-16 02:00:15,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:00:15,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-16 02:00:15,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:00:16,683 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:00:16,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-10-16 02:00:16,860 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 80 proven. 55 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2021-10-16 02:00:16,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:00:19,691 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 28 proven. 107 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2021-10-16 02:00:19,691 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:00:19,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [363606643] [2021-10-16 02:00:19,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [363606643] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:00:19,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [930459119] [2021-10-16 02:00:19,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 02:00:19,692 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:00:19,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:00:19,693 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:00:19,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-10-16 02:00:21,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-16 02:00:21,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:00:21,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 02:00:21,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:00:22,292 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:00:22,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-10-16 02:00:22,368 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 80 proven. 55 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2021-10-16 02:00:22,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:00:24,603 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 28 proven. 107 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2021-10-16 02:00:24,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [930459119] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:00:24,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219282756] [2021-10-16 02:00:24,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 02:00:24,604 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:00:24,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:00:24,605 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:00:24,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-16 02:00:25,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-16 02:00:25,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:00:25,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 02:00:25,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:00:26,636 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:00:26,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-10-16 02:00:26,690 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 80 proven. 55 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2021-10-16 02:00:26,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:00:31,119 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 28 proven. 120 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2021-10-16 02:00:31,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219282756] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:00:31,120 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:00:31,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 9] total 15 [2021-10-16 02:00:31,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772606633] [2021-10-16 02:00:31,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-16 02:00:31,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:00:31,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-16 02:00:31,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-10-16 02:00:31,124 INFO L87 Difference]: Start difference. First operand 94 states and 95 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 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 02:00:31,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:00:31,857 INFO L93 Difference]: Finished difference Result 100 states and 102 transitions. [2021-10-16 02:00:31,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 02:00:31,860 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 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) Word has length 93 [2021-10-16 02:00:31,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:00:31,862 INFO L225 Difference]: With dead ends: 100 [2021-10-16 02:00:31,862 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:00:31,863 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 538 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 3072.8ms TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2021-10-16 02:00:31,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:00:31,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:00:31,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:00:31,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:00:31,865 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 93 [2021-10-16 02:00:31,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:00:31,865 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:00:31,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 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 02:00:31,866 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:00:31,866 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:00:31,869 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:00:31,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-16 02:00:32,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-10-16 02:00:32,321 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-10-16 02:00:32,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:00:32,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:00:32,499 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:00:32,539 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:00:32,647 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:00:33,034 INFO L857 garLoopResultBuilder]: For program point L161(lines 161 224) no Hoare annotation was computed. [2021-10-16 02:00:33,034 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:00:33,034 INFO L860 garLoopResultBuilder]: At program point L221(lines 133 225) the Hoare annotation is: true [2021-10-16 02:00:33,034 INFO L857 garLoopResultBuilder]: For program point L182(lines 182 217) no Hoare annotation was computed. [2021-10-16 02:00:33,035 INFO L857 garLoopResultBuilder]: For program point L180(lines 180 222) no Hoare annotation was computed. [2021-10-16 02:00:33,035 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 209) no Hoare annotation was computed. [2021-10-16 02:00:33,035 INFO L857 garLoopResultBuilder]: For program point L193(line 193) no Hoare annotation was computed. [2021-10-16 02:00:33,035 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 02:00:33,035 INFO L857 garLoopResultBuilder]: For program point L191(lines 191 210) no Hoare annotation was computed. [2021-10-16 02:00:33,036 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:00:33,036 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 02:00:33,036 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 193) no Hoare annotation was computed. [2021-10-16 02:00:33,037 INFO L853 garLoopResultBuilder]: At program point L216(lines 182 217) the Hoare annotation is: (and (= ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~0 (_ bv1 32)) (= |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.offset| (_ bv0 32)) (bvult ~Id_MCDC_93~0 (_ bv42 32)) (= ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0 ~Id_MCDC_93~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.base|) (bvadd |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.offset| (_ bv492 32))) (_ bv0 32))) [2021-10-16 02:00:33,037 INFO L853 garLoopResultBuilder]: At program point L204(lines 167 223) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.offset| (_ bv0 32))) (.cse1 (= (select (select |#memory_int| |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.base|) (bvadd |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.offset| (_ bv492 32))) (_ bv0 32)))) (or (and .cse0 (not (= (bvmul (_ bv12 32) ~Id_MCDC_93~0) (_ bv504 32))) (not (= (bvmul (_ bv12 32) ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0) (_ bv504 32))) (bvult (bvadd (_ bv4294967295 32) ~Id_MCDC_93~0) (_ bv42 32)) (bvult (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0) (_ bv42 32)) .cse1) (and (= ~Id_MCDC_93~0 (_ bv0 32)) .cse0 (= ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0 (_ bv0 32)) .cse1) (and .cse0 (= ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0 (_ bv1 32)) (bvult ~Id_MCDC_93~0 (_ bv42 32)) .cse1))) [2021-10-16 02:00:33,043 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:00:33,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:00:33 BoogieIcfgContainer [2021-10-16 02:00:33,064 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:00:33,065 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:00:33,065 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:00:33,065 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:00:33,066 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:59:57" (3/4) ... [2021-10-16 02:00:33,070 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:00:33,088 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-10-16 02:00:33,089 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-16 02:00:33,091 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-16 02:00:33,092 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:00:33,093 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:00:33,327 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:00:33,327 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:00:33,329 INFO L168 Benchmark]: Toolchain (without parser) took 37624.09 ms. Allocated memory was 54.5 MB in the beginning and 142.6 MB in the end (delta: 88.1 MB). Free memory was 30.7 MB in the beginning and 28.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 89.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:00:33,329 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 54.5 MB. Free memory was 35.0 MB in the beginning and 35.0 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:00:33,330 INFO L168 Benchmark]: CACSL2BoogieTranslator took 692.18 ms. Allocated memory was 54.5 MB in the beginning and 75.5 MB in the end (delta: 21.0 MB). Free memory was 30.4 MB in the beginning and 52.1 MB in the end (delta: -21.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:00:33,337 INFO L168 Benchmark]: Boogie Procedure Inliner took 103.57 ms. Allocated memory is still 75.5 MB. Free memory was 52.1 MB in the beginning and 48.5 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:00:33,338 INFO L168 Benchmark]: Boogie Preprocessor took 86.71 ms. Allocated memory is still 75.5 MB. Free memory was 48.5 MB in the beginning and 45.2 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:00:33,338 INFO L168 Benchmark]: RCFGBuilder took 1288.19 ms. Allocated memory was 75.5 MB in the beginning and 96.5 MB in the end (delta: 21.0 MB). Free memory was 45.0 MB in the beginning and 71.9 MB in the end (delta: -26.9 MB). Peak memory consumption was 17.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:00:33,339 INFO L168 Benchmark]: TraceAbstraction took 35182.63 ms. Allocated memory was 96.5 MB in the beginning and 142.6 MB in the end (delta: 46.1 MB). Free memory was 71.6 MB in the beginning and 91.8 MB in the end (delta: -20.2 MB). Peak memory consumption was 67.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:00:33,339 INFO L168 Benchmark]: Witness Printer took 262.67 ms. Allocated memory is still 142.6 MB. Free memory was 91.8 MB in the beginning and 28.9 MB in the end (delta: 62.9 MB). Peak memory consumption was 62.9 MB. Max. memory is 16.1 GB. [2021-10-16 02:00:33,342 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 54.5 MB. Free memory was 35.0 MB in the beginning and 35.0 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 692.18 ms. Allocated memory was 54.5 MB in the beginning and 75.5 MB in the end (delta: 21.0 MB). Free memory was 30.4 MB in the beginning and 52.1 MB in the end (delta: -21.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 103.57 ms. Allocated memory is still 75.5 MB. Free memory was 52.1 MB in the beginning and 48.5 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 86.71 ms. Allocated memory is still 75.5 MB. Free memory was 48.5 MB in the beginning and 45.2 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1288.19 ms. Allocated memory was 75.5 MB in the beginning and 96.5 MB in the end (delta: 21.0 MB). Free memory was 45.0 MB in the beginning and 71.9 MB in the end (delta: -26.9 MB). Peak memory consumption was 17.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 35182.63 ms. Allocated memory was 96.5 MB in the beginning and 142.6 MB in the end (delta: 46.1 MB). Free memory was 71.6 MB in the beginning and 91.8 MB in the end (delta: -20.2 MB). Peak memory consumption was 67.8 MB. Max. memory is 16.1 GB. * Witness Printer took 262.67 ms. Allocated memory is still 142.6 MB. Free memory was 91.8 MB in the beginning and 28.9 MB in the end (delta: 62.9 MB). Peak memory consumption was 62.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 193]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 35075.0ms, OverallIterations: 5, TraceHistogramMax: 15, EmptinessCheckTime: 36.0ms, AutomataDifference: 3582.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 541.9ms, InitialAbstractionConstructionTime: 12.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 54 SDtfs, 375 SDslu, 217 SDs, 0 SdLazy, 577 SolverSat, 148 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1932.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1003 GetRequests, 910 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 4885.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=4, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 52.9ms AutomataMinimizationTime, 5 MinimizatonAttempts, 26 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 35 NumberOfFragments, 97 HoareAnnotationTreeSize, 3 FomulaSimplifications, 2328 FormulaSimplificationTreeSizeReduction, 200.4ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 100 FormulaSimplificationTreeSizeReductionInter, 334.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 519.6ms SsaConstructionTime, 8587.4ms SatisfiabilityAnalysisTime, 17024.3ms InterpolantComputationTime, 495 NumberOfCodeBlocks, 279 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 968 ConstructedInterpolants, 236 QuantifiedInterpolants, 10638 SizeOfPredicates, 49 NumberOfNonLiveVariables, 2601 ConjunctsInSsa, 88 ConjunctsInUnsatCore, 22 InterpolantComputations, 4 PerfectInterpolantSequences, 3293/4512 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 133]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 182]: Loop Invariant Derived loop invariant: (((Id_MCDC_89____CPAchecker_TMP_1 == 1bv32 && Id_MCDC_89__Id_MCDC_95 == 0bv32) && ~bvult32(Id_MCDC_93, 42bv32)) && Id_MCDC_89__Id_MCDC_96 == Id_MCDC_93) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][~bvadd64(Id_MCDC_89__Id_MCDC_95, 492bv32)] == 0bv32 - InvariantResult [Line: 167]: Loop Invariant Derived loop invariant: ((((((Id_MCDC_89__Id_MCDC_95 == 0bv32 && !(~bvmul32(12bv32, Id_MCDC_93) == 504bv32)) && !(~bvmul32(12bv32, Id_MCDC_89__Id_MCDC_96) == 504bv32)) && ~bvult32(~bvadd64(4294967295bv32, Id_MCDC_93), 42bv32)) && ~bvult32(~bvadd64(4294967295bv32, Id_MCDC_89__Id_MCDC_96), 42bv32)) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][~bvadd64(Id_MCDC_89__Id_MCDC_95, 492bv32)] == 0bv32) || (((Id_MCDC_93 == 0bv32 && Id_MCDC_89__Id_MCDC_95 == 0bv32) && Id_MCDC_89__Id_MCDC_96 == 0bv32) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][~bvadd64(Id_MCDC_89__Id_MCDC_95, 492bv32)] == 0bv32)) || (((Id_MCDC_89__Id_MCDC_95 == 0bv32 && Id_MCDC_89__Id_MCDC_96 == 1bv32) && ~bvult32(Id_MCDC_93, 42bv32)) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][~bvadd64(Id_MCDC_89__Id_MCDC_95, 492bv32)] == 0bv32) RESULT: Ultimate proved your program to be correct! [2021-10-16 02:00:33,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34708f51-0258-4082-9e6b-79e69f403ec4/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...