./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product48.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5e1df92-2c8c-4496-ac61-7b93b5c03286/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5e1df92-2c8c-4496-ac61-7b93b5c03286/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5e1df92-2c8c-4496-ac61-7b93b5c03286/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5e1df92-2c8c-4496-ac61-7b93b5c03286/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product48.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5e1df92-2c8c-4496-ac61-7b93b5c03286/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5e1df92-2c8c-4496-ac61-7b93b5c03286/bin/uautomizer-GMMbpWq8iD --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3a211ea3558de7a91964968ab789e94c34171c05a0686de6a2a53ff72a198e9d ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:32:11,067 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:32:11,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:32:11,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:32:11,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:32:11,110 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:32:11,111 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:32:11,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:32:11,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:32:11,117 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:32:11,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:32:11,120 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:32:11,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:32:11,122 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:32:11,124 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:32:11,125 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:32:11,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:32:11,128 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:32:11,130 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:32:11,133 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:32:11,135 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:32:11,136 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:32:11,138 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:32:11,139 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:32:11,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:32:11,144 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:32:11,144 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:32:11,145 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:32:11,146 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:32:11,147 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:32:11,147 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:32:11,148 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:32:11,149 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:32:11,150 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:32:11,152 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:32:11,152 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:32:11,153 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:32:11,153 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:32:11,154 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:32:11,155 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:32:11,156 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:32:11,157 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5e1df92-2c8c-4496-ac61-7b93b5c03286/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:32:11,204 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:32:11,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:32:11,205 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:32:11,205 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:32:11,206 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:32:11,206 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:32:11,206 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:32:11,207 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:32:11,207 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:32:11,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:32:11,208 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:32:11,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:32:11,208 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:32:11,208 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:32:11,208 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:32:11,209 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:32:11,209 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:32:11,209 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:32:11,209 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:32:11,210 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:32:11,210 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:32:11,210 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:32:11,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:32:11,211 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:32:11,211 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:32:11,211 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:32:11,211 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:32:11,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:32:11,212 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:32:11,212 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:32:11,212 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:32:11,213 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:32:11,213 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_c5e1df92-2c8c-4496-ac61-7b93b5c03286/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5e1df92-2c8c-4496-ac61-7b93b5c03286/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a211ea3558de7a91964968ab789e94c34171c05a0686de6a2a53ff72a198e9d [2021-10-28 23:32:11,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:32:11,470 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:32:11,473 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:32:11,474 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:32:11,475 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:32:11,476 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5e1df92-2c8c-4496-ac61-7b93b5c03286/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/product-lines/minepump_spec4_product48.cil.c [2021-10-28 23:32:11,540 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5e1df92-2c8c-4496-ac61-7b93b5c03286/bin/uautomizer-GMMbpWq8iD/data/213c210d4/1e97764a310e499dad72b451fac46a16/FLAG597736740 [2021-10-28 23:32:12,041 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:32:12,042 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5e1df92-2c8c-4496-ac61-7b93b5c03286/sv-benchmarks/c/product-lines/minepump_spec4_product48.cil.c [2021-10-28 23:32:12,070 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5e1df92-2c8c-4496-ac61-7b93b5c03286/bin/uautomizer-GMMbpWq8iD/data/213c210d4/1e97764a310e499dad72b451fac46a16/FLAG597736740 [2021-10-28 23:32:12,371 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5e1df92-2c8c-4496-ac61-7b93b5c03286/bin/uautomizer-GMMbpWq8iD/data/213c210d4/1e97764a310e499dad72b451fac46a16 [2021-10-28 23:32:12,374 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:32:12,377 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:32:12,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:32:12,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:32:12,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:32:12,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:32:12" (1/1) ... [2021-10-28 23:32:12,391 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57376610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:32:12, skipping insertion in model container [2021-10-28 23:32:12,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:32:12" (1/1) ... [2021-10-28 23:32:12,400 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:32:12,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:32:12,693 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_c5e1df92-2c8c-4496-ac61-7b93b5c03286/sv-benchmarks/c/product-lines/minepump_spec4_product48.cil.c[11718,11731] [2021-10-28 23:32:12,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:32:12,746 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:32:12,795 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_c5e1df92-2c8c-4496-ac61-7b93b5c03286/sv-benchmarks/c/product-lines/minepump_spec4_product48.cil.c[11718,11731] [2021-10-28 23:32:12,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:32:12,851 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:32:12,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:32:12 WrapperNode [2021-10-28 23:32:12,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:32:12,853 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:32:12,853 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:32:12,853 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:32:12,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:32:12" (1/1) ... [2021-10-28 23:32:12,878 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:32:12" (1/1) ... [2021-10-28 23:32:12,939 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:32:12,939 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:32:12,940 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:32:12,940 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:32:12,948 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:32:12" (1/1) ... [2021-10-28 23:32:12,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:32:12" (1/1) ... [2021-10-28 23:32:12,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:32:12" (1/1) ... [2021-10-28 23:32:12,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:32:12" (1/1) ... [2021-10-28 23:32:12,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:32:12" (1/1) ... [2021-10-28 23:32:12,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:32:12" (1/1) ... [2021-10-28 23:32:12,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:32:12" (1/1) ... [2021-10-28 23:32:12,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:32:12,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:32:12,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:32:12,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:32:13,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:32:12" (1/1) ... [2021-10-28 23:32:13,014 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:32:13,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5e1df92-2c8c-4496-ac61-7b93b5c03286/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:32:13,041 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5e1df92-2c8c-4496-ac61-7b93b5c03286/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:32:13,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5e1df92-2c8c-4496-ac61-7b93b5c03286/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:32:13,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:32:13,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:32:13,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:32:13,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:32:14,145 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:32:14,146 INFO L299 CfgBuilder]: Removed 198 assume(true) statements. [2021-10-28 23:32:14,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:32:14 BoogieIcfgContainer [2021-10-28 23:32:14,148 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:32:14,150 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:32:14,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:32:14,154 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:32:14,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:32:12" (1/3) ... [2021-10-28 23:32:14,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d5eee5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:32:14, skipping insertion in model container [2021-10-28 23:32:14,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:32:12" (2/3) ... [2021-10-28 23:32:14,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d5eee5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:32:14, skipping insertion in model container [2021-10-28 23:32:14,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:32:14" (3/3) ... [2021-10-28 23:32:14,159 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product48.cil.c [2021-10-28 23:32:14,165 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:32:14,165 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-28 23:32:14,206 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:32:14,212 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:32:14,213 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-28 23:32:14,231 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 127 states have (on average 1.5354330708661417) internal successors, (195), 130 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:32:14,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 23:32:14,237 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:32:14,237 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:32:14,238 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:32:14,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:32:14,243 INFO L85 PathProgramCache]: Analyzing trace with hash 325683581, now seen corresponding path program 1 times [2021-10-28 23:32:14,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:32:14,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510545829] [2021-10-28 23:32:14,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:14,254 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:32:14,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:14,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:32:14,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:32:14,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510545829] [2021-10-28 23:32:14,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510545829] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:32:14,578 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:32:14,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:32:14,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077896002] [2021-10-28 23:32:14,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 23:32:14,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:32:14,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:32:14,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:32:14,619 INFO L87 Difference]: Start difference. First operand has 131 states, 127 states have (on average 1.5354330708661417) internal successors, (195), 130 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:32:14,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:32:14,684 INFO L93 Difference]: Finished difference Result 256 states and 383 transitions. [2021-10-28 23:32:14,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:32:14,685 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 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 [2021-10-28 23:32:14,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:32:14,701 INFO L225 Difference]: With dead ends: 256 [2021-10-28 23:32:14,702 INFO L226 Difference]: Without dead ends: 127 [2021-10-28 23:32:14,706 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:32:14,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-28 23:32:14,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-10-28 23:32:14,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 124 states have (on average 1.4758064516129032) internal successors, (183), 126 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:32:14,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 183 transitions. [2021-10-28 23:32:14,746 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 183 transitions. Word has length 16 [2021-10-28 23:32:14,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:32:14,747 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 183 transitions. [2021-10-28 23:32:14,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:32:14,747 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 183 transitions. [2021-10-28 23:32:14,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 23:32:14,749 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:32:14,749 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:32:14,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:32:14,749 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:32:14,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:32:14,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1302516555, now seen corresponding path program 1 times [2021-10-28 23:32:14,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:32:14,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044387620] [2021-10-28 23:32:14,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:14,751 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:32:14,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:14,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:32:14,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:32:14,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044387620] [2021-10-28 23:32:14,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044387620] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:32:14,866 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:32:14,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:32:14,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463115413] [2021-10-28 23:32:14,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:32:14,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:32:14,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:32:14,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:32:14,869 INFO L87 Difference]: Start difference. First operand 127 states and 183 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:32:14,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:32:14,887 INFO L93 Difference]: Finished difference Result 127 states and 183 transitions. [2021-10-28 23:32:14,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:32:14,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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 [2021-10-28 23:32:14,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:32:14,889 INFO L225 Difference]: With dead ends: 127 [2021-10-28 23:32:14,889 INFO L226 Difference]: Without dead ends: 53 [2021-10-28 23:32:14,890 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:32:14,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-10-28 23:32:14,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-10-28 23:32:14,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.4615384615384615) internal successors, (76), 52 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:32:14,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 76 transitions. [2021-10-28 23:32:14,903 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 76 transitions. Word has length 17 [2021-10-28 23:32:14,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:32:14,903 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 76 transitions. [2021-10-28 23:32:14,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:32:14,904 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 76 transitions. [2021-10-28 23:32:14,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 23:32:14,904 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:32:14,905 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:32:14,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:32:14,905 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:32:14,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:32:14,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1189907750, now seen corresponding path program 1 times [2021-10-28 23:32:14,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:32:14,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145457418] [2021-10-28 23:32:14,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:14,909 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:32:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:15,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:32:15,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:32:15,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145457418] [2021-10-28 23:32:15,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145457418] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:32:15,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:32:15,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:32:15,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111267254] [2021-10-28 23:32:15,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:32:15,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:32:15,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:32:15,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:32:15,048 INFO L87 Difference]: Start difference. First operand 53 states and 76 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:32:15,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:32:15,077 INFO L93 Difference]: Finished difference Result 147 states and 216 transitions. [2021-10-28 23:32:15,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:32:15,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-28 23:32:15,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:32:15,079 INFO L225 Difference]: With dead ends: 147 [2021-10-28 23:32:15,079 INFO L226 Difference]: Without dead ends: 100 [2021-10-28 23:32:15,080 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:32:15,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-10-28 23:32:15,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 96. [2021-10-28 23:32:15,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.4842105263157894) internal successors, (141), 95 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:32:15,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 141 transitions. [2021-10-28 23:32:15,100 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 141 transitions. Word has length 22 [2021-10-28 23:32:15,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:32:15,100 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 141 transitions. [2021-10-28 23:32:15,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:32:15,101 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 141 transitions. [2021-10-28 23:32:15,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 23:32:15,103 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:32:15,103 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:32:15,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 23:32:15,104 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:32:15,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:32:15,105 INFO L85 PathProgramCache]: Analyzing trace with hash 752688312, now seen corresponding path program 1 times [2021-10-28 23:32:15,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:32:15,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579454624] [2021-10-28 23:32:15,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:15,107 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:32:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:15,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:32:15,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:32:15,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579454624] [2021-10-28 23:32:15,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579454624] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:32:15,201 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:32:15,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:32:15,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458550923] [2021-10-28 23:32:15,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:32:15,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:32:15,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:32:15,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:32:15,203 INFO L87 Difference]: Start difference. First operand 96 states and 141 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:32:15,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:32:15,237 INFO L93 Difference]: Finished difference Result 227 states and 338 transitions. [2021-10-28 23:32:15,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:32:15,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 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 24 [2021-10-28 23:32:15,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:32:15,244 INFO L225 Difference]: With dead ends: 227 [2021-10-28 23:32:15,244 INFO L226 Difference]: Without dead ends: 137 [2021-10-28 23:32:15,245 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:32:15,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-10-28 23:32:15,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 135. [2021-10-28 23:32:15,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.455223880597015) internal successors, (195), 134 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:32:15,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 195 transitions. [2021-10-28 23:32:15,269 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 195 transitions. Word has length 24 [2021-10-28 23:32:15,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:32:15,270 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 195 transitions. [2021-10-28 23:32:15,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:32:15,270 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 195 transitions. [2021-10-28 23:32:15,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-28 23:32:15,271 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:32:15,271 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:32:15,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 23:32:15,272 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:32:15,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:32:15,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1744683281, now seen corresponding path program 1 times [2021-10-28 23:32:15,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:32:15,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266507582] [2021-10-28 23:32:15,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:15,275 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:32:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:15,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:32:15,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:32:15,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266507582] [2021-10-28 23:32:15,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266507582] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:32:15,400 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:32:15,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:32:15,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277950106] [2021-10-28 23:32:15,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:32:15,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:32:15,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:32:15,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:32:15,403 INFO L87 Difference]: Start difference. First operand 135 states and 195 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:32:15,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:32:15,520 INFO L93 Difference]: Finished difference Result 487 states and 709 transitions. [2021-10-28 23:32:15,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:32:15,520 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 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 25 [2021-10-28 23:32:15,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:32:15,524 INFO L225 Difference]: With dead ends: 487 [2021-10-28 23:32:15,524 INFO L226 Difference]: Without dead ends: 358 [2021-10-28 23:32:15,528 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:32:15,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-10-28 23:32:15,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 224. [2021-10-28 23:32:15,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 1.4080717488789238) internal successors, (314), 223 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:32:15,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 314 transitions. [2021-10-28 23:32:15,578 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 314 transitions. Word has length 25 [2021-10-28 23:32:15,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:32:15,578 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 314 transitions. [2021-10-28 23:32:15,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:32:15,579 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 314 transitions. [2021-10-28 23:32:15,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 23:32:15,581 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:32:15,581 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:32:15,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 23:32:15,582 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:32:15,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:32:15,583 INFO L85 PathProgramCache]: Analyzing trace with hash 590975025, now seen corresponding path program 1 times [2021-10-28 23:32:15,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:32:15,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531206059] [2021-10-28 23:32:15,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:15,584 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:32:15,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:15,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:32:15,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:32:15,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531206059] [2021-10-28 23:32:15,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531206059] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:32:15,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:32:15,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:32:15,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331645731] [2021-10-28 23:32:15,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:32:15,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:32:15,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:32:15,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:32:15,693 INFO L87 Difference]: Start difference. First operand 224 states and 314 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:32:15,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:32:15,835 INFO L93 Difference]: Finished difference Result 486 states and 694 transitions. [2021-10-28 23:32:15,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:32:15,835 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-28 23:32:15,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:32:15,844 INFO L225 Difference]: With dead ends: 486 [2021-10-28 23:32:15,845 INFO L226 Difference]: Without dead ends: 484 [2021-10-28 23:32:15,845 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:32:15,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2021-10-28 23:32:15,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 224. [2021-10-28 23:32:15,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 1.399103139013453) internal successors, (312), 223 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:32:15,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 312 transitions. [2021-10-28 23:32:15,887 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 312 transitions. Word has length 26 [2021-10-28 23:32:15,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:32:15,888 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 312 transitions. [2021-10-28 23:32:15,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:32:15,888 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 312 transitions. [2021-10-28 23:32:15,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-28 23:32:15,890 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:32:15,890 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:32:15,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 23:32:15,890 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:32:15,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:32:15,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1757183464, now seen corresponding path program 1 times [2021-10-28 23:32:15,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:32:15,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108230868] [2021-10-28 23:32:15,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:15,892 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:32:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:15,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:32:15,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:32:15,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108230868] [2021-10-28 23:32:15,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108230868] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:32:15,954 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:32:15,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:32:15,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494068827] [2021-10-28 23:32:15,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:32:15,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:32:15,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:32:15,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:32:15,957 INFO L87 Difference]: Start difference. First operand 224 states and 312 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:32:16,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:32:16,039 INFO L93 Difference]: Finished difference Result 678 states and 956 transitions. [2021-10-28 23:32:16,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:32:16,040 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-28 23:32:16,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:32:16,043 INFO L225 Difference]: With dead ends: 678 [2021-10-28 23:32:16,044 INFO L226 Difference]: Without dead ends: 549 [2021-10-28 23:32:16,045 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:32:16,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2021-10-28 23:32:16,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 232. [2021-10-28 23:32:16,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.3852813852813852) internal successors, (320), 231 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:32:16,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 320 transitions. [2021-10-28 23:32:16,071 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 320 transitions. Word has length 34 [2021-10-28 23:32:16,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:32:16,073 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 320 transitions. [2021-10-28 23:32:16,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:32:16,074 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 320 transitions. [2021-10-28 23:32:16,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-28 23:32:16,079 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:32:16,079 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:32:16,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 23:32:16,080 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:32:16,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:32:16,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1170377450, now seen corresponding path program 1 times [2021-10-28 23:32:16,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:32:16,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318031634] [2021-10-28 23:32:16,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:16,082 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:32:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:16,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:32:16,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:32:16,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318031634] [2021-10-28 23:32:16,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318031634] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:32:16,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:32:16,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:32:16,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063902656] [2021-10-28 23:32:16,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:32:16,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:32:16,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:32:16,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:32:16,187 INFO L87 Difference]: Start difference. First operand 232 states and 320 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:32:16,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:32:16,353 INFO L93 Difference]: Finished difference Result 597 states and 842 transitions. [2021-10-28 23:32:16,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:32:16,354 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-28 23:32:16,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:32:16,357 INFO L225 Difference]: With dead ends: 597 [2021-10-28 23:32:16,357 INFO L226 Difference]: Without dead ends: 460 [2021-10-28 23:32:16,358 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:32:16,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-10-28 23:32:16,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 327. [2021-10-28 23:32:16,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 326 states have (on average 1.3711656441717792) internal successors, (447), 326 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:32:16,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 447 transitions. [2021-10-28 23:32:16,398 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 447 transitions. Word has length 34 [2021-10-28 23:32:16,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:32:16,399 INFO L470 AbstractCegarLoop]: Abstraction has 327 states and 447 transitions. [2021-10-28 23:32:16,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:32:16,399 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 447 transitions. [2021-10-28 23:32:16,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-28 23:32:16,400 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:32:16,400 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:32:16,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 23:32:16,401 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:32:16,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:32:16,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1257920154, now seen corresponding path program 1 times [2021-10-28 23:32:16,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:32:16,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860254649] [2021-10-28 23:32:16,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:16,402 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:32:16,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:16,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:32:16,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:32:16,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860254649] [2021-10-28 23:32:16,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860254649] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:32:16,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:32:16,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:32:16,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135854615] [2021-10-28 23:32:16,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:32:16,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:32:16,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:32:16,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:32:16,453 INFO L87 Difference]: Start difference. First operand 327 states and 447 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:32:16,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:32:16,580 INFO L93 Difference]: Finished difference Result 614 states and 851 transitions. [2021-10-28 23:32:16,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:32:16,581 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-28 23:32:16,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:32:16,584 INFO L225 Difference]: With dead ends: 614 [2021-10-28 23:32:16,584 INFO L226 Difference]: Without dead ends: 380 [2021-10-28 23:32:16,585 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:32:16,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-10-28 23:32:16,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 366. [2021-10-28 23:32:16,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 365 states have (on average 1.389041095890411) internal successors, (507), 365 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:32:16,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 507 transitions. [2021-10-28 23:32:16,618 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 507 transitions. Word has length 34 [2021-10-28 23:32:16,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:32:16,618 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 507 transitions. [2021-10-28 23:32:16,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:32:16,619 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 507 transitions. [2021-10-28 23:32:16,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-28 23:32:16,620 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:32:16,620 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:32:16,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 23:32:16,621 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:32:16,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:32:16,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1102797650, now seen corresponding path program 1 times [2021-10-28 23:32:16,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:32:16,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973118353] [2021-10-28 23:32:16,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:16,622 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:32:16,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:16,677 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 23:32:16,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:32:16,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973118353] [2021-10-28 23:32:16,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973118353] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:32:16,678 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:32:16,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:32:16,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279549064] [2021-10-28 23:32:16,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:32:16,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:32:16,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:32:16,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:32:16,680 INFO L87 Difference]: Start difference. First operand 366 states and 507 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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) [2021-10-28 23:32:16,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:32:16,816 INFO L93 Difference]: Finished difference Result 622 states and 858 transitions. [2021-10-28 23:32:16,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:32:16,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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) Word has length 51 [2021-10-28 23:32:16,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:32:16,819 INFO L225 Difference]: With dead ends: 622 [2021-10-28 23:32:16,819 INFO L226 Difference]: Without dead ends: 262 [2021-10-28 23:32:16,819 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:32:16,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-10-28 23:32:16,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 254. [2021-10-28 23:32:16,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.3636363636363635) internal successors, (345), 253 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:32:16,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 345 transitions. [2021-10-28 23:32:16,844 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 345 transitions. Word has length 51 [2021-10-28 23:32:16,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:32:16,844 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 345 transitions. [2021-10-28 23:32:16,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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) [2021-10-28 23:32:16,845 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 345 transitions. [2021-10-28 23:32:16,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-28 23:32:16,845 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:32:16,846 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:32:16,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 23:32:16,846 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:32:16,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:32:16,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1984987954, now seen corresponding path program 1 times [2021-10-28 23:32:16,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:32:16,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506130193] [2021-10-28 23:32:16,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:16,847 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:32:16,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:16,908 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 23:32:16,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:32:16,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506130193] [2021-10-28 23:32:16,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506130193] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:32:16,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:32:16,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:32:16,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812490007] [2021-10-28 23:32:16,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:32:16,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:32:16,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:32:16,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:32:16,910 INFO L87 Difference]: Start difference. First operand 254 states and 345 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:32:17,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:32:17,005 INFO L93 Difference]: Finished difference Result 774 states and 1046 transitions. [2021-10-28 23:32:17,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:32:17,006 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-10-28 23:32:17,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:32:17,010 INFO L225 Difference]: With dead ends: 774 [2021-10-28 23:32:17,010 INFO L226 Difference]: Without dead ends: 526 [2021-10-28 23:32:17,011 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:32:17,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2021-10-28 23:32:17,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 263. [2021-10-28 23:32:17,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 1.3511450381679388) internal successors, (354), 262 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:32:17,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 354 transitions. [2021-10-28 23:32:17,043 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 354 transitions. Word has length 52 [2021-10-28 23:32:17,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:32:17,043 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 354 transitions. [2021-10-28 23:32:17,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:32:17,044 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 354 transitions. [2021-10-28 23:32:17,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-28 23:32:17,045 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:32:17,045 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:32:17,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 23:32:17,045 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:32:17,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:32:17,046 INFO L85 PathProgramCache]: Analyzing trace with hash -2035219728, now seen corresponding path program 1 times [2021-10-28 23:32:17,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:32:17,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752447853] [2021-10-28 23:32:17,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:17,047 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:32:17,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:17,123 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 23:32:17,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:32:17,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752447853] [2021-10-28 23:32:17,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752447853] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:32:17,126 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:32:17,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:32:17,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495038886] [2021-10-28 23:32:17,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:32:17,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:32:17,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:32:17,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:32:17,129 INFO L87 Difference]: Start difference. First operand 263 states and 354 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:32:17,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:32:17,244 INFO L93 Difference]: Finished difference Result 621 states and 828 transitions. [2021-10-28 23:32:17,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:32:17,245 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-10-28 23:32:17,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:32:17,247 INFO L225 Difference]: With dead ends: 621 [2021-10-28 23:32:17,248 INFO L226 Difference]: Without dead ends: 364 [2021-10-28 23:32:17,248 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:32:17,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2021-10-28 23:32:17,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 222. [2021-10-28 23:32:17,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 1.3212669683257918) internal successors, (292), 221 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:32:17,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 292 transitions. [2021-10-28 23:32:17,276 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 292 transitions. Word has length 52 [2021-10-28 23:32:17,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:32:17,276 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 292 transitions. [2021-10-28 23:32:17,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:32:17,277 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 292 transitions. [2021-10-28 23:32:17,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-28 23:32:17,277 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:32:17,278 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:32:17,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-28 23:32:17,279 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:32:17,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:32:17,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1687322796, now seen corresponding path program 1 times [2021-10-28 23:32:17,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:32:17,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417581707] [2021-10-28 23:32:17,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:17,280 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:32:17,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:17,365 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:32:17,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:32:17,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417581707] [2021-10-28 23:32:17,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417581707] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:32:17,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511220680] [2021-10-28 23:32:17,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:17,366 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:32:17,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5e1df92-2c8c-4496-ac61-7b93b5c03286/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:32:17,368 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5e1df92-2c8c-4496-ac61-7b93b5c03286/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:32:17,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5e1df92-2c8c-4496-ac61-7b93b5c03286/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 23:32:17,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:32:17,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 23:32:17,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:32:17,781 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:32:17,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511220680] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:32:17,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:32:17,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-28 23:32:17,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226481804] [2021-10-28 23:32:17,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:32:17,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:32:17,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:32:17,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:32:17,784 INFO L87 Difference]: Start difference. First operand 222 states and 292 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:32:18,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:32:18,033 INFO L93 Difference]: Finished difference Result 626 states and 837 transitions. [2021-10-28 23:32:18,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:32:18,033 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-10-28 23:32:18,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:32:18,037 INFO L225 Difference]: With dead ends: 626 [2021-10-28 23:32:18,037 INFO L226 Difference]: Without dead ends: 458 [2021-10-28 23:32:18,038 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:32:18,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-10-28 23:32:18,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 268. [2021-10-28 23:32:18,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 267 states have (on average 1.3220973782771535) internal successors, (353), 267 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:32:18,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 353 transitions. [2021-10-28 23:32:18,070 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 353 transitions. Word has length 53 [2021-10-28 23:32:18,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:32:18,071 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 353 transitions. [2021-10-28 23:32:18,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:32:18,071 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 353 transitions. [2021-10-28 23:32:18,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-10-28 23:32:18,072 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:32:18,073 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:32:18,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5e1df92-2c8c-4496-ac61-7b93b5c03286/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:32:18,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5e1df92-2c8c-4496-ac61-7b93b5c03286/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:32:18,292 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:32:18,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:32:18,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1211162538, now seen corresponding path program 2 times [2021-10-28 23:32:18,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:32:18,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633731770] [2021-10-28 23:32:18,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:32:18,293 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:32:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:32:18,356 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:32:18,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:32:18,493 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:32:18,494 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:32:18,495 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:32:18,497 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:32:18,498 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:32:18,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-28 23:32:18,501 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:32:18,506 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:32:18,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:32:18 BoogieIcfgContainer [2021-10-28 23:32:18,675 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:32:18,676 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:32:18,676 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:32:18,676 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:32:18,677 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:32:14" (3/4) ... [2021-10-28 23:32:18,681 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 23:32:18,834 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5e1df92-2c8c-4496-ac61-7b93b5c03286/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:32:18,835 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:32:18,836 INFO L168 Benchmark]: Toolchain (without parser) took 6457.97 ms. Allocated memory was 90.2 MB in the beginning and 161.5 MB in the end (delta: 71.3 MB). Free memory was 51.3 MB in the beginning and 111.8 MB in the end (delta: -60.5 MB). Peak memory consumption was 64.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:32:18,837 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 90.2 MB. Free memory was 69.0 MB in the beginning and 69.0 MB in the end (delta: 64.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:32:18,837 INFO L168 Benchmark]: CACSL2BoogieTranslator took 466.25 ms. Allocated memory is still 90.2 MB. Free memory was 51.1 MB in the beginning and 60.0 MB in the end (delta: -8.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:32:18,837 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.21 ms. Allocated memory is still 90.2 MB. Free memory was 59.8 MB in the beginning and 55.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:32:18,838 INFO L168 Benchmark]: Boogie Preprocessor took 58.81 ms. Allocated memory is still 90.2 MB. Free memory was 55.8 MB in the beginning and 53.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:32:18,838 INFO L168 Benchmark]: RCFGBuilder took 1149.28 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 52.9 MB in the beginning and 53.0 MB in the end (delta: -166.8 kB). Peak memory consumption was 20.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:32:18,839 INFO L168 Benchmark]: TraceAbstraction took 4524.84 ms. Allocated memory was 109.1 MB in the beginning and 134.2 MB in the end (delta: 25.2 MB). Free memory was 52.6 MB in the beginning and 40.5 MB in the end (delta: 12.1 MB). Peak memory consumption was 39.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:32:18,839 INFO L168 Benchmark]: Witness Printer took 159.10 ms. Allocated memory was 134.2 MB in the beginning and 161.5 MB in the end (delta: 27.3 MB). Free memory was 40.5 MB in the beginning and 111.8 MB in the end (delta: -71.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:32:18,842 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 90.2 MB. Free memory was 69.0 MB in the beginning and 69.0 MB in the end (delta: 64.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 466.25 ms. Allocated memory is still 90.2 MB. Free memory was 51.1 MB in the beginning and 60.0 MB in the end (delta: -8.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 86.21 ms. Allocated memory is still 90.2 MB. Free memory was 59.8 MB in the beginning and 55.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.81 ms. Allocated memory is still 90.2 MB. Free memory was 55.8 MB in the beginning and 53.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1149.28 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 52.9 MB in the beginning and 53.0 MB in the end (delta: -166.8 kB). Peak memory consumption was 20.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4524.84 ms. Allocated memory was 109.1 MB in the beginning and 134.2 MB in the end (delta: 25.2 MB). Free memory was 52.6 MB in the beginning and 40.5 MB in the end (delta: 12.1 MB). Peak memory consumption was 39.3 MB. Max. memory is 16.1 GB. * Witness Printer took 159.10 ms. Allocated memory was 134.2 MB in the beginning and 161.5 MB in the end (delta: 27.3 MB). Free memory was 40.5 MB in the beginning and 111.8 MB in the end (delta: -71.3 MB). Peak memory consumption was 8.4 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 - CounterExampleResult [Line: 449]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L248] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L454] int cleanupTimeShifts = 4; [L566] int pumpRunning = 0; [L567] int systemActive = 1; [L784] int waterLevel = 1; [L785] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L535] int retValue_acc ; [L536] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L973] int retValue_acc ; [L976] retValue_acc = 1 [L977] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L542] tmp = valid_product() [L544] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L879] int splverifierCounter ; [L880] int tmp ; [L881] int tmp___0 ; [L882] int tmp___1 ; [L883] int tmp___2 ; [L886] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L888] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L890] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L896] tmp = __VERIFIER_nondet_int() [L898] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L802] COND TRUE waterLevel < 2 [L803] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L906] tmp___0 = __VERIFIER_nondet_int() [L908] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L916] tmp___2 = __VERIFIER_nondet_int() [L918] COND TRUE \read(tmp___2) [L779] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L573] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L580] COND TRUE \read(systemActive) [L628] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L631] COND FALSE !(\read(pumpRunning)) [L602] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L605] COND TRUE ! pumpRunning [L742] int retValue_acc ; [L743] int tmp ; [L744] int tmp___0 ; [L864] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L867] COND FALSE !(waterLevel < 2) [L871] retValue_acc = 0 [L872] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L748] tmp = isHighWaterSensorDry() [L750] COND FALSE !(\read(tmp)) [L753] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L755] retValue_acc = tmp___0 [L756] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L607] tmp = isHighWaterLevel() [L609] COND TRUE \read(tmp) [L661] int tmp ; [L686] int retValue_acc ; [L823] int retValue_acc ; [L826] retValue_acc = methaneLevelCritical [L827] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L690] retValue_acc = isMethaneLevelCritical() [L692] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L665] tmp = isMethaneAlarm() [L667] COND FALSE !(\read(tmp)) [L656] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L54] int tmp ; [L55] int tmp___0 ; [L855] int retValue_acc ; [L858] retValue_acc = waterLevel [L859] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L59] tmp = getWaterLevel() [L61] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L888] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L890] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L896] tmp = __VERIFIER_nondet_int() [L898] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L906] tmp___0 = __VERIFIER_nondet_int() [L908] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L916] tmp___2 = __VERIFIER_nondet_int() [L918] COND TRUE \read(tmp___2) [L779] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L573] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L790] COND TRUE waterLevel > 0 [L791] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L580] COND TRUE \read(systemActive) [L628] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L631] COND TRUE \read(pumpRunning) [L686] int retValue_acc ; [L823] int retValue_acc ; [L826] retValue_acc = methaneLevelCritical [L827] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L690] retValue_acc = isMethaneLevelCritical() [L692] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L633] tmp = isMethaneAlarm() [L635] COND FALSE !(\read(tmp)) [L602] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L605] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L54] int tmp ; [L55] int tmp___0 ; [L855] int retValue_acc ; [L858] retValue_acc = waterLevel [L859] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L59] tmp = getWaterLevel() [L61] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L888] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L890] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L896] tmp = __VERIFIER_nondet_int() [L898] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L906] tmp___0 = __VERIFIER_nondet_int() [L908] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L916] tmp___2 = __VERIFIER_nondet_int() [L918] COND TRUE \read(tmp___2) [L779] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L573] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L790] COND TRUE waterLevel > 0 [L791] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L580] COND TRUE \read(systemActive) [L628] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L631] COND TRUE \read(pumpRunning) [L686] int retValue_acc ; [L823] int retValue_acc ; [L826] retValue_acc = methaneLevelCritical [L827] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L690] retValue_acc = isMethaneLevelCritical() [L692] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L633] tmp = isMethaneAlarm() [L635] COND FALSE !(\read(tmp)) [L602] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L605] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L54] int tmp ; [L55] int tmp___0 ; [L855] int retValue_acc ; [L858] retValue_acc = waterLevel [L859] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L59] tmp = getWaterLevel() [L61] COND TRUE tmp == 0 [L697] int retValue_acc ; [L700] retValue_acc = pumpRunning [L701] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L63] tmp___0 = isPumpRunning() [L65] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L449] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - UnprovableResult [Line: 449]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 449]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 131 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 4.2s, OverallIterations: 14, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1589 SDtfs, 1684 SDslu, 2170 SDs, 0 SdLazy, 301 SolverSat, 70 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 133 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=366occurred in iteration=9, InterpolantAutomatonStates: 65, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 1467 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 565 NumberOfCodeBlocks, 565 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 479 ConstructedInterpolants, 0 QuantifiedInterpolants, 815 SizeOfPredicates, 3 NumberOfNonLiveVariables, 436 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 64/70 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-28 23:32:18,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5e1df92-2c8c-4496-ac61-7b93b5c03286/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...