./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/locks/test_locks_12.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1075d776-227f-45c5-b95a-c0df97b9ba0b/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1075d776-227f-45c5-b95a-c0df97b9ba0b/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1075d776-227f-45c5-b95a-c0df97b9ba0b/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1075d776-227f-45c5-b95a-c0df97b9ba0b/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/locks/test_locks_12.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1075d776-227f-45c5-b95a-c0df97b9ba0b/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1075d776-227f-45c5-b95a-c0df97b9ba0b/bin/utaipan-aC7eJsxGYH --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 12c3feea735c5360de013afbcf9aaa3880d39f75cbb7661493cccf003151044d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:36:54,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:36:54,053 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:36:54,098 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:36:54,099 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:36:54,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:36:54,104 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:36:54,108 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:36:54,110 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:36:54,116 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:36:54,117 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:36:54,119 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:36:54,119 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:36:54,122 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:36:54,124 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:36:54,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:36:54,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:36:54,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:36:54,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:36:54,145 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:36:54,147 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:36:54,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:36:54,152 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:36:54,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:36:54,161 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:36:54,162 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:36:54,162 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:36:54,164 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:36:54,165 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:36:54,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:36:54,168 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:36:54,169 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:36:54,171 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:36:54,172 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:36:54,174 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:36:54,174 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:36:54,175 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:36:54,176 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:36:54,176 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:36:54,177 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:36:54,178 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:36:54,179 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1075d776-227f-45c5-b95a-c0df97b9ba0b/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:36:54,212 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:36:54,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:36:54,214 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:36:54,214 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:36:54,214 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:36:54,215 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:36:54,215 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:36:54,215 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:36:54,216 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:36:54,216 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:36:54,216 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:36:54,217 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:36:54,217 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:36:54,217 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:36:54,218 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:36:54,218 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:36:54,219 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:36:54,219 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:36:54,219 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:36:54,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:36:54,225 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:36:54,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:36:54,225 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:36:54,225 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:36:54,226 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:36:54,226 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:36:54,226 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:36:54,226 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:36:54,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:36:54,227 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:36:54,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:36:54,228 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:36:54,228 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:36:54,228 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:36:54,228 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:36:54,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:36:54,229 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:36:54,229 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:36:54,229 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:36:54,232 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_1075d776-227f-45c5-b95a-c0df97b9ba0b/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1075d776-227f-45c5-b95a-c0df97b9ba0b/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12c3feea735c5360de013afbcf9aaa3880d39f75cbb7661493cccf003151044d [2021-11-03 04:36:54,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:36:54,536 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:36:54,539 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:36:54,540 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:36:54,541 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:36:54,542 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1075d776-227f-45c5-b95a-c0df97b9ba0b/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/locks/test_locks_12.c [2021-11-03 04:36:54,619 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1075d776-227f-45c5-b95a-c0df97b9ba0b/bin/utaipan-aC7eJsxGYH/data/88dcb7f28/ad9456d88fce4edaab5acbfa0ee86a96/FLAG4679430f6 [2021-11-03 04:36:55,075 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:36:55,076 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1075d776-227f-45c5-b95a-c0df97b9ba0b/sv-benchmarks/c/locks/test_locks_12.c [2021-11-03 04:36:55,083 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1075d776-227f-45c5-b95a-c0df97b9ba0b/bin/utaipan-aC7eJsxGYH/data/88dcb7f28/ad9456d88fce4edaab5acbfa0ee86a96/FLAG4679430f6 [2021-11-03 04:36:55,477 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1075d776-227f-45c5-b95a-c0df97b9ba0b/bin/utaipan-aC7eJsxGYH/data/88dcb7f28/ad9456d88fce4edaab5acbfa0ee86a96 [2021-11-03 04:36:55,480 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:36:55,482 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:36:55,496 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:36:55,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:36:55,500 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:36:55,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:36:55" (1/1) ... [2021-11-03 04:36:55,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3838a993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:36:55, skipping insertion in model container [2021-11-03 04:36:55,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:36:55" (1/1) ... [2021-11-03 04:36:55,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:36:55,529 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:36:55,695 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_1075d776-227f-45c5-b95a-c0df97b9ba0b/sv-benchmarks/c/locks/test_locks_12.c[4591,4604] [2021-11-03 04:36:55,699 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:36:55,707 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:36:55,730 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_1075d776-227f-45c5-b95a-c0df97b9ba0b/sv-benchmarks/c/locks/test_locks_12.c[4591,4604] [2021-11-03 04:36:55,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:36:55,744 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:36:55,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:36:55 WrapperNode [2021-11-03 04:36:55,745 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:36:55,746 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:36:55,746 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:36:55,746 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:36:55,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:36:55" (1/1) ... [2021-11-03 04:36:55,763 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:36:55" (1/1) ... [2021-11-03 04:36:55,786 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:36:55,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:36:55,787 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:36:55,787 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:36:55,794 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:36:55" (1/1) ... [2021-11-03 04:36:55,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:36:55" (1/1) ... [2021-11-03 04:36:55,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:36:55" (1/1) ... [2021-11-03 04:36:55,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:36:55" (1/1) ... [2021-11-03 04:36:55,802 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:36:55" (1/1) ... [2021-11-03 04:36:55,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:36:55" (1/1) ... [2021-11-03 04:36:55,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:36:55" (1/1) ... [2021-11-03 04:36:55,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:36:55,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:36:55,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:36:55,813 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:36:55,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:36:55" (1/1) ... [2021-11-03 04:36:55,828 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:36:55,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1075d776-227f-45c5-b95a-c0df97b9ba0b/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:36:55,868 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1075d776-227f-45c5-b95a-c0df97b9ba0b/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:36:55,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1075d776-227f-45c5-b95a-c0df97b9ba0b/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:36:55,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:36:55,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:36:55,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 04:36:55,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:36:56,562 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:36:56,562 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-03 04:36:56,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:36:56 BoogieIcfgContainer [2021-11-03 04:36:56,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:36:56,566 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:36:56,567 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:36:56,570 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:36:56,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:36:55" (1/3) ... [2021-11-03 04:36:56,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79aaa626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:36:56, skipping insertion in model container [2021-11-03 04:36:56,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:36:55" (2/3) ... [2021-11-03 04:36:56,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79aaa626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:36:56, skipping insertion in model container [2021-11-03 04:36:56,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:36:56" (3/3) ... [2021-11-03 04:36:56,573 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_12.c [2021-11-03 04:36:56,578 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:36:56,579 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 04:36:56,708 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:36:56,720 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, mAutomataTypeConcurrency=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 [2021-11-03 04:36:56,720 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 04:36:56,738 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 30 states have (on average 1.9) internal successors, (57), 31 states have internal predecessors, (57), 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) [2021-11-03 04:36:56,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-03 04:36:56,744 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:36:56,744 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-03 04:36:56,745 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:36:56,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:36:56,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1071191421, now seen corresponding path program 1 times [2021-11-03 04:36:56,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:36:56,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550637722] [2021-11-03 04:36:56,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:36:56,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:36:56,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:36:56,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:36:56,996 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:36:56,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550637722] [2021-11-03 04:36:56,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550637722] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:36:56,998 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:36:56,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 04:36:56,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459165] [2021-11-03 04:36:57,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:36:57,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:36:57,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:36:57,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:36:57,025 INFO L87 Difference]: Start difference. First operand has 32 states, 30 states have (on average 1.9) internal successors, (57), 31 states have internal predecessors, (57), 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 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2021-11-03 04:36:57,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:36:57,104 INFO L93 Difference]: Finished difference Result 66 states and 113 transitions. [2021-11-03 04:36:57,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:36:57,106 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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 [2021-11-03 04:36:57,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:36:57,118 INFO L225 Difference]: With dead ends: 66 [2021-11-03 04:36:57,118 INFO L226 Difference]: Without dead ends: 55 [2021-11-03 04:36:57,122 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:36:57,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-11-03 04:36:57,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 29. [2021-11-03 04:36:57,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 28 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:57,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 51 transitions. [2021-11-03 04:36:57,169 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 51 transitions. Word has length 6 [2021-11-03 04:36:57,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:36:57,170 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 51 transitions. [2021-11-03 04:36:57,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2021-11-03 04:36:57,170 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 51 transitions. [2021-11-03 04:36:57,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-03 04:36:57,172 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:36:57,172 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:36:57,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 04:36:57,173 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:36:57,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:36:57,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1153017017, now seen corresponding path program 1 times [2021-11-03 04:36:57,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:36:57,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842174239] [2021-11-03 04:36:57,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:36:57,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:36:57,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:36:57,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:36:57,294 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:36:57,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842174239] [2021-11-03 04:36:57,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842174239] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:36:57,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:36:57,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 04:36:57,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795424957] [2021-11-03 04:36:57,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:36:57,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:36:57,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:36:57,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:36:57,301 INFO L87 Difference]: Start difference. First operand 29 states and 51 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:57,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:36:57,348 INFO L93 Difference]: Finished difference Result 55 states and 95 transitions. [2021-11-03 04:36:57,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:36:57,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-03 04:36:57,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:36:57,351 INFO L225 Difference]: With dead ends: 55 [2021-11-03 04:36:57,352 INFO L226 Difference]: Without dead ends: 53 [2021-11-03 04:36:57,352 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:36:57,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-03 04:36:57,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 29. [2021-11-03 04:36:57,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 28 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) [2021-11-03 04:36:57,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 50 transitions. [2021-11-03 04:36:57,363 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 50 transitions. Word has length 7 [2021-11-03 04:36:57,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:36:57,363 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 50 transitions. [2021-11-03 04:36:57,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:57,364 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 50 transitions. [2021-11-03 04:36:57,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 04:36:57,365 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:36:57,365 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:36:57,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 04:36:57,366 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:36:57,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:36:57,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1384002200, now seen corresponding path program 1 times [2021-11-03 04:36:57,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:36:57,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187653460] [2021-11-03 04:36:57,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:36:57,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:36:57,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:36:57,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:36:57,480 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:36:57,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187653460] [2021-11-03 04:36:57,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187653460] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:36:57,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:36:57,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 04:36:57,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23693908] [2021-11-03 04:36:57,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:36:57,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:36:57,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:36:57,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:36:57,505 INFO L87 Difference]: Start difference. First operand 29 states and 50 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:57,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:36:57,533 INFO L93 Difference]: Finished difference Result 53 states and 90 transitions. [2021-11-03 04:36:57,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:36:57,534 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-03 04:36:57,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:36:57,535 INFO L225 Difference]: With dead ends: 53 [2021-11-03 04:36:57,536 INFO L226 Difference]: Without dead ends: 51 [2021-11-03 04:36:57,536 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:36:57,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-03 04:36:57,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 29. [2021-11-03 04:36:57,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.75) internal successors, (49), 28 states have internal predecessors, (49), 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) [2021-11-03 04:36:57,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 49 transitions. [2021-11-03 04:36:57,541 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 49 transitions. Word has length 8 [2021-11-03 04:36:57,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:36:57,541 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 49 transitions. [2021-11-03 04:36:57,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:57,542 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 49 transitions. [2021-11-03 04:36:57,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 04:36:57,542 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:36:57,542 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:36:57,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 04:36:57,543 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:36:57,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:36:57,545 INFO L85 PathProgramCache]: Analyzing trace with hash -45391378, now seen corresponding path program 1 times [2021-11-03 04:36:57,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:36:57,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904681835] [2021-11-03 04:36:57,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:36:57,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:36:57,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:36:57,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:36:57,647 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:36:57,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904681835] [2021-11-03 04:36:57,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904681835] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:36:57,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:36:57,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 04:36:57,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201204476] [2021-11-03 04:36:57,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:36:57,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:36:57,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:36:57,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:36:57,653 INFO L87 Difference]: Start difference. First operand 29 states and 49 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-11-03 04:36:57,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:36:57,680 INFO L93 Difference]: Finished difference Result 51 states and 85 transitions. [2021-11-03 04:36:57,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:36:57,680 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 [2021-11-03 04:36:57,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:36:57,682 INFO L225 Difference]: With dead ends: 51 [2021-11-03 04:36:57,682 INFO L226 Difference]: Without dead ends: 49 [2021-11-03 04:36:57,683 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:36:57,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-11-03 04:36:57,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 29. [2021-11-03 04:36:57,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 28 states have internal predecessors, (48), 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) [2021-11-03 04:36:57,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 48 transitions. [2021-11-03 04:36:57,692 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 48 transitions. Word has length 9 [2021-11-03 04:36:57,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:36:57,692 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 48 transitions. [2021-11-03 04:36:57,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-11-03 04:36:57,693 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 48 transitions. [2021-11-03 04:36:57,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-03 04:36:57,694 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:36:57,694 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:36:57,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 04:36:57,694 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:36:57,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:36:57,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1406918995, now seen corresponding path program 1 times [2021-11-03 04:36:57,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:36:57,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456154792] [2021-11-03 04:36:57,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:36:57,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:36:57,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:36:57,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:36:57,749 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:36:57,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456154792] [2021-11-03 04:36:57,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456154792] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:36:57,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:36:57,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 04:36:57,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100137489] [2021-11-03 04:36:57,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:36:57,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:36:57,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:36:57,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:36:57,751 INFO L87 Difference]: Start difference. First operand 29 states and 48 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:57,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:36:57,781 INFO L93 Difference]: Finished difference Result 49 states and 80 transitions. [2021-11-03 04:36:57,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:36:57,782 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-03 04:36:57,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:36:57,785 INFO L225 Difference]: With dead ends: 49 [2021-11-03 04:36:57,785 INFO L226 Difference]: Without dead ends: 47 [2021-11-03 04:36:57,786 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:36:57,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-03 04:36:57,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 29. [2021-11-03 04:36:57,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 28 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) [2021-11-03 04:36:57,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 47 transitions. [2021-11-03 04:36:57,797 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 47 transitions. Word has length 10 [2021-11-03 04:36:57,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:36:57,797 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 47 transitions. [2021-11-03 04:36:57,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:57,798 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 47 transitions. [2021-11-03 04:36:57,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 04:36:57,798 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:36:57,798 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:36:57,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 04:36:57,799 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:36:57,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:36:57,799 INFO L85 PathProgramCache]: Analyzing trace with hash -664601821, now seen corresponding path program 1 times [2021-11-03 04:36:57,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:36:57,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539126938] [2021-11-03 04:36:57,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:36:57,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:36:57,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:36:57,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:36:57,877 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:36:57,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539126938] [2021-11-03 04:36:57,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539126938] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:36:57,877 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:36:57,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 04:36:57,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984276811] [2021-11-03 04:36:57,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:36:57,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:36:57,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:36:57,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:36:57,885 INFO L87 Difference]: Start difference. First operand 29 states and 47 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2021-11-03 04:36:57,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:36:57,912 INFO L93 Difference]: Finished difference Result 47 states and 75 transitions. [2021-11-03 04:36:57,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:36:57,913 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-03 04:36:57,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:36:57,916 INFO L225 Difference]: With dead ends: 47 [2021-11-03 04:36:57,916 INFO L226 Difference]: Without dead ends: 45 [2021-11-03 04:36:57,916 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:36:57,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-11-03 04:36:57,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 29. [2021-11-03 04:36:57,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 28 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:57,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 46 transitions. [2021-11-03 04:36:57,925 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 46 transitions. Word has length 11 [2021-11-03 04:36:57,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:36:57,925 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 46 transitions. [2021-11-03 04:36:57,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2021-11-03 04:36:57,925 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 46 transitions. [2021-11-03 04:36:57,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-03 04:36:57,926 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:36:57,926 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:36:57,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 04:36:57,927 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:36:57,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:36:57,927 INFO L85 PathProgramCache]: Analyzing trace with hash 872394434, now seen corresponding path program 1 times [2021-11-03 04:36:57,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:36:57,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735305614] [2021-11-03 04:36:57,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:36:57,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:36:57,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:36:57,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:36:57,993 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:36:57,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735305614] [2021-11-03 04:36:57,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735305614] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:36:57,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:36:57,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 04:36:57,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502582641] [2021-11-03 04:36:57,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:36:57,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:36:57,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:36:57,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:36:57,998 INFO L87 Difference]: Start difference. First operand 29 states and 46 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:58,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:36:58,016 INFO L93 Difference]: Finished difference Result 45 states and 70 transitions. [2021-11-03 04:36:58,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:36:58,017 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-03 04:36:58,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:36:58,018 INFO L225 Difference]: With dead ends: 45 [2021-11-03 04:36:58,018 INFO L226 Difference]: Without dead ends: 43 [2021-11-03 04:36:58,019 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:36:58,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-03 04:36:58,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 29. [2021-11-03 04:36:58,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 28 states have internal predecessors, (45), 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) [2021-11-03 04:36:58,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 45 transitions. [2021-11-03 04:36:58,025 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 45 transitions. Word has length 12 [2021-11-03 04:36:58,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:36:58,026 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 45 transitions. [2021-11-03 04:36:58,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:58,027 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 45 transitions. [2021-11-03 04:36:58,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-03 04:36:58,028 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:36:58,028 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:36:58,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-03 04:36:58,028 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:36:58,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:36:58,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1274638424, now seen corresponding path program 1 times [2021-11-03 04:36:58,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:36:58,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774507160] [2021-11-03 04:36:58,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:36:58,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:36:58,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:36:58,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:36:58,085 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:36:58,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774507160] [2021-11-03 04:36:58,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774507160] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:36:58,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:36:58,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 04:36:58,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338811579] [2021-11-03 04:36:58,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:36:58,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:36:58,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:36:58,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:36:58,087 INFO L87 Difference]: Start difference. First operand 29 states and 45 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2021-11-03 04:36:58,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:36:58,117 INFO L93 Difference]: Finished difference Result 43 states and 65 transitions. [2021-11-03 04:36:58,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:36:58,117 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-03 04:36:58,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:36:58,119 INFO L225 Difference]: With dead ends: 43 [2021-11-03 04:36:58,119 INFO L226 Difference]: Without dead ends: 41 [2021-11-03 04:36:58,119 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:36:58,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-03 04:36:58,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 29. [2021-11-03 04:36:58,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 28 states have internal predecessors, (44), 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) [2021-11-03 04:36:58,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 44 transitions. [2021-11-03 04:36:58,126 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 44 transitions. Word has length 13 [2021-11-03 04:36:58,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:36:58,126 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 44 transitions. [2021-11-03 04:36:58,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2021-11-03 04:36:58,127 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 44 transitions. [2021-11-03 04:36:58,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-03 04:36:58,128 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:36:58,128 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:36:58,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-03 04:36:58,129 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:36:58,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:36:58,129 INFO L85 PathProgramCache]: Analyzing trace with hash 859300567, now seen corresponding path program 1 times [2021-11-03 04:36:58,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:36:58,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66258859] [2021-11-03 04:36:58,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:36:58,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:36:58,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:36:58,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:36:58,188 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:36:58,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66258859] [2021-11-03 04:36:58,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66258859] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:36:58,188 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:36:58,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 04:36:58,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717770149] [2021-11-03 04:36:58,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:36:58,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:36:58,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:36:58,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:36:58,193 INFO L87 Difference]: Start difference. First operand 29 states and 44 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2021-11-03 04:36:58,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:36:58,211 INFO L93 Difference]: Finished difference Result 41 states and 60 transitions. [2021-11-03 04:36:58,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:36:58,214 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-03 04:36:58,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:36:58,215 INFO L225 Difference]: With dead ends: 41 [2021-11-03 04:36:58,215 INFO L226 Difference]: Without dead ends: 39 [2021-11-03 04:36:58,215 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:36:58,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-11-03 04:36:58,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 29. [2021-11-03 04:36:58,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 28 states have internal predecessors, (43), 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) [2021-11-03 04:36:58,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2021-11-03 04:36:58,228 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 43 transitions. Word has length 14 [2021-11-03 04:36:58,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:36:58,228 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 43 transitions. [2021-11-03 04:36:58,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2021-11-03 04:36:58,228 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 43 transitions. [2021-11-03 04:36:58,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-03 04:36:58,229 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:36:58,230 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:36:58,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-03 04:36:58,230 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:36:58,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:36:58,231 INFO L85 PathProgramCache]: Analyzing trace with hash 868729229, now seen corresponding path program 1 times [2021-11-03 04:36:58,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:36:58,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435198671] [2021-11-03 04:36:58,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:36:58,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:36:58,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:36:58,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:36:58,286 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:36:58,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435198671] [2021-11-03 04:36:58,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435198671] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:36:58,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:36:58,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 04:36:58,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773457741] [2021-11-03 04:36:58,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:36:58,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:36:58,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:36:58,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:36:58,289 INFO L87 Difference]: Start difference. First operand 29 states and 43 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:58,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:36:58,304 INFO L93 Difference]: Finished difference Result 39 states and 55 transitions. [2021-11-03 04:36:58,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:36:58,305 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-03 04:36:58,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:36:58,306 INFO L225 Difference]: With dead ends: 39 [2021-11-03 04:36:58,306 INFO L226 Difference]: Without dead ends: 37 [2021-11-03 04:36:58,306 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:36:58,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-03 04:36:58,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 29. [2021-11-03 04:36:58,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.5) internal successors, (42), 28 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:58,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 42 transitions. [2021-11-03 04:36:58,316 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 42 transitions. Word has length 15 [2021-11-03 04:36:58,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:36:58,316 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 42 transitions. [2021-11-03 04:36:58,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:58,317 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 42 transitions. [2021-11-03 04:36:58,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-03 04:36:58,318 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:36:58,318 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:36:58,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-03 04:36:58,319 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:36:58,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:36:58,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1161018092, now seen corresponding path program 1 times [2021-11-03 04:36:58,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:36:58,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119774780] [2021-11-03 04:36:58,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:36:58,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:36:58,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:36:58,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:36:58,380 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:36:58,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119774780] [2021-11-03 04:36:58,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119774780] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:36:58,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:36:58,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 04:36:58,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91258612] [2021-11-03 04:36:58,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:36:58,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:36:58,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:36:58,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:36:58,384 INFO L87 Difference]: Start difference. First operand 29 states and 42 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:58,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:36:58,402 INFO L93 Difference]: Finished difference Result 37 states and 50 transitions. [2021-11-03 04:36:58,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:36:58,403 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-03 04:36:58,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:36:58,404 INFO L225 Difference]: With dead ends: 37 [2021-11-03 04:36:58,404 INFO L226 Difference]: Without dead ends: 35 [2021-11-03 04:36:58,406 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:36:58,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-11-03 04:36:58,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29. [2021-11-03 04:36:58,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.4642857142857142) internal successors, (41), 28 states have internal predecessors, (41), 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) [2021-11-03 04:36:58,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 41 transitions. [2021-11-03 04:36:58,414 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 41 transitions. Word has length 16 [2021-11-03 04:36:58,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:36:58,414 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 41 transitions. [2021-11-03 04:36:58,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:58,414 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 41 transitions. [2021-11-03 04:36:58,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 04:36:58,415 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:36:58,415 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:36:58,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-03 04:36:58,416 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:36:58,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:36:58,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1632038594, now seen corresponding path program 1 times [2021-11-03 04:36:58,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:36:58,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867886929] [2021-11-03 04:36:58,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:36:58,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:36:58,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:36:58,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:36:58,458 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:36:58,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867886929] [2021-11-03 04:36:58,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867886929] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:36:58,459 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:36:58,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 04:36:58,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667872163] [2021-11-03 04:36:58,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:36:58,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:36:58,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:36:58,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:36:58,461 INFO L87 Difference]: Start difference. First operand 29 states and 41 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:58,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:36:58,475 INFO L93 Difference]: Finished difference Result 31 states and 43 transitions. [2021-11-03 04:36:58,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:36:58,476 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-03 04:36:58,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:36:58,477 INFO L225 Difference]: With dead ends: 31 [2021-11-03 04:36:58,477 INFO L226 Difference]: Without dead ends: 0 [2021-11-03 04:36:58,477 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:36:58,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-03 04:36:58,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-03 04:36:58,478 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) [2021-11-03 04:36:58,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-03 04:36:58,478 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-11-03 04:36:58,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:36:58,480 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-03 04:36:58,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:36:58,481 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-03 04:36:58,481 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-03 04:36:58,484 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:36:58,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-03 04:36:58,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-03 04:36:58,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:58,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:58,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:58,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:36:58,501 INFO L857 garLoopResultBuilder]: For program point L184(line 184) no Hoare annotation was computed. [2021-11-03 04:36:58,501 INFO L853 garLoopResultBuilder]: At program point L184-1(lines 7 193) the Hoare annotation is: false [2021-11-03 04:36:58,501 INFO L857 garLoopResultBuilder]: For program point L168-1(lines 47 188) no Hoare annotation was computed. [2021-11-03 04:36:58,501 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-03 04:36:58,502 INFO L857 garLoopResultBuilder]: For program point L169(line 169) no Hoare annotation was computed. [2021-11-03 04:36:58,502 INFO L857 garLoopResultBuilder]: For program point L153-1(lines 47 188) no Hoare annotation was computed. [2021-11-03 04:36:58,502 INFO L857 garLoopResultBuilder]: For program point L154(line 154) no Hoare annotation was computed. [2021-11-03 04:36:58,502 INFO L857 garLoopResultBuilder]: For program point L138-1(lines 47 188) no Hoare annotation was computed. [2021-11-03 04:36:58,502 INFO L857 garLoopResultBuilder]: For program point L122-1(lines 47 188) no Hoare annotation was computed. [2021-11-03 04:36:58,502 INFO L857 garLoopResultBuilder]: For program point L139(line 139) no Hoare annotation was computed. [2021-11-03 04:36:58,503 INFO L860 garLoopResultBuilder]: At program point L189(lines 7 193) the Hoare annotation is: true [2021-11-03 04:36:58,503 INFO L857 garLoopResultBuilder]: For program point L173-1(lines 47 188) no Hoare annotation was computed. [2021-11-03 04:36:58,503 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-03 04:36:58,503 INFO L857 garLoopResultBuilder]: For program point L174(line 174) no Hoare annotation was computed. [2021-11-03 04:36:58,503 INFO L857 garLoopResultBuilder]: For program point L158-1(lines 47 188) no Hoare annotation was computed. [2021-11-03 04:36:58,504 INFO L860 garLoopResultBuilder]: At program point L192(lines 6 193) the Hoare annotation is: true [2021-11-03 04:36:58,504 INFO L857 garLoopResultBuilder]: For program point L159(line 159) no Hoare annotation was computed. [2021-11-03 04:36:58,504 INFO L857 garLoopResultBuilder]: For program point L143-1(lines 47 188) no Hoare annotation was computed. [2021-11-03 04:36:58,504 INFO L857 garLoopResultBuilder]: For program point L144(line 144) no Hoare annotation was computed. [2021-11-03 04:36:58,504 INFO L857 garLoopResultBuilder]: For program point L128-1(lines 47 188) no Hoare annotation was computed. [2021-11-03 04:36:58,504 INFO L857 garLoopResultBuilder]: For program point L178-1(lines 47 188) no Hoare annotation was computed. [2021-11-03 04:36:58,505 INFO L857 garLoopResultBuilder]: For program point L129(line 129) no Hoare annotation was computed. [2021-11-03 04:36:58,505 INFO L857 garLoopResultBuilder]: For program point L179(line 179) no Hoare annotation was computed. [2021-11-03 04:36:58,505 INFO L857 garLoopResultBuilder]: For program point L163-1(lines 47 188) no Hoare annotation was computed. [2021-11-03 04:36:58,505 INFO L857 garLoopResultBuilder]: For program point L164(line 164) no Hoare annotation was computed. [2021-11-03 04:36:58,505 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 191) no Hoare annotation was computed. [2021-11-03 04:36:58,506 INFO L857 garLoopResultBuilder]: For program point L148-1(lines 47 188) no Hoare annotation was computed. [2021-11-03 04:36:58,506 INFO L857 garLoopResultBuilder]: For program point L49(lines 49 51) no Hoare annotation was computed. [2021-11-03 04:36:58,506 INFO L857 garLoopResultBuilder]: For program point L149(line 149) no Hoare annotation was computed. [2021-11-03 04:36:58,506 INFO L857 garLoopResultBuilder]: For program point L133-1(lines 47 188) no Hoare annotation was computed. [2021-11-03 04:36:58,506 INFO L860 garLoopResultBuilder]: At program point L183-1(lines 47 188) the Hoare annotation is: true [2021-11-03 04:36:58,506 INFO L857 garLoopResultBuilder]: For program point L134(line 134) no Hoare annotation was computed. [2021-11-03 04:36:58,510 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:36:58,511 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 04:36:58,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:36:58 BoogieIcfgContainer [2021-11-03 04:36:58,519 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 04:36:58,520 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 04:36:58,520 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 04:36:58,520 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 04:36:58,521 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:36:56" (3/4) ... [2021-11-03 04:36:58,524 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-03 04:36:58,535 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-11-03 04:36:58,536 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-11-03 04:36:58,537 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-03 04:36:58,537 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-03 04:36:58,586 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1075d776-227f-45c5-b95a-c0df97b9ba0b/bin/utaipan-aC7eJsxGYH/witness.graphml [2021-11-03 04:36:58,586 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 04:36:58,588 INFO L168 Benchmark]: Toolchain (without parser) took 3105.09 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 52.1 MB in the beginning and 55.1 MB in the end (delta: -3.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. [2021-11-03 04:36:58,588 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 90.2 MB. Free memory is still 69.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:36:58,588 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.86 ms. Allocated memory is still 90.2 MB. Free memory was 52.0 MB in the beginning and 65.7 MB in the end (delta: -13.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:36:58,589 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.10 ms. Allocated memory is still 90.2 MB. Free memory was 65.7 MB in the beginning and 64.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:36:58,589 INFO L168 Benchmark]: Boogie Preprocessor took 25.37 ms. Allocated memory is still 90.2 MB. Free memory was 64.0 MB in the beginning and 62.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:36:58,590 INFO L168 Benchmark]: RCFGBuilder took 752.33 ms. Allocated memory is still 90.2 MB. Free memory was 62.6 MB in the beginning and 37.8 MB in the end (delta: 24.8 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-11-03 04:36:58,590 INFO L168 Benchmark]: TraceAbstraction took 1952.93 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 37.5 MB in the beginning and 59.3 MB in the end (delta: -21.9 MB). Peak memory consumption was 3.8 MB. Max. memory is 16.1 GB. [2021-11-03 04:36:58,590 INFO L168 Benchmark]: Witness Printer took 66.33 ms. Allocated memory is still 113.2 MB. Free memory was 59.3 MB in the beginning and 55.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-03 04:36:58,592 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 90.2 MB. Free memory is still 69.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 248.86 ms. Allocated memory is still 90.2 MB. Free memory was 52.0 MB in the beginning and 65.7 MB in the end (delta: -13.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.10 ms. Allocated memory is still 90.2 MB. Free memory was 65.7 MB in the beginning and 64.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.37 ms. Allocated memory is still 90.2 MB. Free memory was 64.0 MB in the beginning and 62.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 752.33 ms. Allocated memory is still 90.2 MB. Free memory was 62.6 MB in the beginning and 37.8 MB in the end (delta: 24.8 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1952.93 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 37.5 MB in the beginning and 59.3 MB in the end (delta: -21.9 MB). Peak memory consumption was 3.8 MB. Max. memory is 16.1 GB. * Witness Printer took 66.33 ms. Allocated memory is still 113.2 MB. Free memory was 59.3 MB in the beginning and 55.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 191]: 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, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.8s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 527 SDtfs, 446 SDslu, 785 SDs, 0 SdLazy, 116 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 176 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 9 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 126 ConstructedInterpolants, 0 QuantifiedInterpolants, 618 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-03 04:36:58,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1075d776-227f-45c5-b95a-c0df97b9ba0b/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE