./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product51.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_8d1498f9-6a1a-4339-b708-e557d0e38f26/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1498f9-6a1a-4339-b708-e557d0e38f26/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1498f9-6a1a-4339-b708-e557d0e38f26/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1498f9-6a1a-4339-b708-e557d0e38f26/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product51.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1498f9-6a1a-4339-b708-e557d0e38f26/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1498f9-6a1a-4339-b708-e557d0e38f26/bin/uautomizer-UnR33cPsHg --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 311cf727219391e066955da60e9a83cfca77eaf7b53c342c6934d47c5123e76f ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 09:58:14,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:58:14,226 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:58:14,270 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:58:14,270 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:58:14,271 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:58:14,273 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:58:14,275 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:58:14,277 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:58:14,278 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:58:14,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:58:14,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:58:14,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:58:14,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:58:14,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:58:14,286 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:58:14,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:58:14,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:58:14,297 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:58:14,299 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:58:14,301 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:58:14,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:58:14,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:58:14,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:58:14,310 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:58:14,311 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:58:14,311 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:58:14,312 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:58:14,313 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:58:14,314 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:58:14,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:58:14,323 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:58:14,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:58:14,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:58:14,328 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:58:14,328 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:58:14,329 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:58:14,329 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:58:14,329 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:58:14,330 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:58:14,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:58:14,331 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1498f9-6a1a-4339-b708-e557d0e38f26/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:58:14,374 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:58:14,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:58:14,375 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:58:14,375 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:58:14,376 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:58:14,376 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:58:14,376 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:58:14,377 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:58:14,377 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:58:14,377 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:58:14,378 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:58:14,378 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:58:14,378 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:58:14,378 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:58:14,378 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:58:14,379 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:58:14,379 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:58:14,379 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:58:14,379 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:58:14,380 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:58:14,380 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:58:14,387 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:58:14,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:58:14,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:58:14,388 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:58:14,388 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:58:14,388 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:58:14,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:58:14,389 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:58:14,389 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:58:14,389 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:58:14,389 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:58:14,389 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_8d1498f9-6a1a-4339-b708-e557d0e38f26/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1498f9-6a1a-4339-b708-e557d0e38f26/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 311cf727219391e066955da60e9a83cfca77eaf7b53c342c6934d47c5123e76f [2021-10-28 09:58:14,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:58:14,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:58:14,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:58:14,675 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:58:14,676 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:58:14,677 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1498f9-6a1a-4339-b708-e557d0e38f26/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/product-lines/minepump_spec1_product51.cil.c [2021-10-28 09:58:14,756 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1498f9-6a1a-4339-b708-e557d0e38f26/bin/uautomizer-UnR33cPsHg/data/efa2c28f4/fec4a4f40c684dbba95bf41620f42e93/FLAG0f5427f3e [2021-10-28 09:58:15,321 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:58:15,322 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1498f9-6a1a-4339-b708-e557d0e38f26/sv-benchmarks/c/product-lines/minepump_spec1_product51.cil.c [2021-10-28 09:58:15,351 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1498f9-6a1a-4339-b708-e557d0e38f26/bin/uautomizer-UnR33cPsHg/data/efa2c28f4/fec4a4f40c684dbba95bf41620f42e93/FLAG0f5427f3e [2021-10-28 09:58:15,588 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1498f9-6a1a-4339-b708-e557d0e38f26/bin/uautomizer-UnR33cPsHg/data/efa2c28f4/fec4a4f40c684dbba95bf41620f42e93 [2021-10-28 09:58:15,590 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:58:15,591 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:58:15,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:58:15,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:58:15,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:58:15,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:58:15" (1/1) ... [2021-10-28 09:58:15,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26793190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:15, skipping insertion in model container [2021-10-28 09:58:15,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:58:15" (1/1) ... [2021-10-28 09:58:15,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:58:15,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:58:15,919 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_8d1498f9-6a1a-4339-b708-e557d0e38f26/sv-benchmarks/c/product-lines/minepump_spec1_product51.cil.c[15256,15269] [2021-10-28 09:58:15,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:58:15,951 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:58:16,027 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_8d1498f9-6a1a-4339-b708-e557d0e38f26/sv-benchmarks/c/product-lines/minepump_spec1_product51.cil.c[15256,15269] [2021-10-28 09:58:16,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:58:16,065 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:58:16,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:16 WrapperNode [2021-10-28 09:58:16,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:58:16,067 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:58:16,067 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:58:16,067 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:58:16,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:16" (1/1) ... [2021-10-28 09:58:16,091 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:16" (1/1) ... [2021-10-28 09:58:16,140 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:58:16,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:58:16,141 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:58:16,142 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:58:16,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:16" (1/1) ... [2021-10-28 09:58:16,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:16" (1/1) ... [2021-10-28 09:58:16,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:16" (1/1) ... [2021-10-28 09:58:16,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:16" (1/1) ... [2021-10-28 09:58:16,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:16" (1/1) ... [2021-10-28 09:58:16,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:16" (1/1) ... [2021-10-28 09:58:16,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:16" (1/1) ... [2021-10-28 09:58:16,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:58:16,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:58:16,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:58:16,187 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:58:16,195 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:16" (1/1) ... [2021-10-28 09:58:16,208 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:58:16,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1498f9-6a1a-4339-b708-e557d0e38f26/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:58:16,227 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1498f9-6a1a-4339-b708-e557d0e38f26/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:58:16,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1498f9-6a1a-4339-b708-e557d0e38f26/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:58:16,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:58:16,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:58:16,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:58:16,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:58:17,163 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:58:17,164 INFO L299 CfgBuilder]: Removed 160 assume(true) statements. [2021-10-28 09:58:17,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:58:17 BoogieIcfgContainer [2021-10-28 09:58:17,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:58:17,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:58:17,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:58:17,172 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:58:17,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:58:15" (1/3) ... [2021-10-28 09:58:17,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@258796a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:58:17, skipping insertion in model container [2021-10-28 09:58:17,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:16" (2/3) ... [2021-10-28 09:58:17,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@258796a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:58:17, skipping insertion in model container [2021-10-28 09:58:17,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:58:17" (3/3) ... [2021-10-28 09:58:17,177 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product51.cil.c [2021-10-28 09:58:17,188 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:58:17,188 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-28 09:58:17,238 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:58:17,244 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 09:58:17,245 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-28 09:58:17,264 INFO L276 IsEmpty]: Start isEmpty. Operand has 119 states, 115 states have (on average 1.565217391304348) internal successors, (180), 118 states have internal predecessors, (180), 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 09:58:17,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 09:58:17,271 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:17,272 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:17,273 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 09:58:17,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:17,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1844308238, now seen corresponding path program 1 times [2021-10-28 09:58:17,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:17,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009489945] [2021-10-28 09:58:17,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:17,291 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:17,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:17,581 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 09:58:17,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:17,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009489945] [2021-10-28 09:58:17,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009489945] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:17,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:17,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:58:17,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722631624] [2021-10-28 09:58:17,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 09:58:17,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:17,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 09:58:17,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:58:17,609 INFO L87 Difference]: Start difference. First operand has 119 states, 115 states have (on average 1.565217391304348) internal successors, (180), 118 states have internal predecessors, (180), 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 09:58:17,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:17,642 INFO L93 Difference]: Finished difference Result 232 states and 353 transitions. [2021-10-28 09:58:17,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 09:58:17,644 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 09:58:17,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:17,656 INFO L225 Difference]: With dead ends: 232 [2021-10-28 09:58:17,657 INFO L226 Difference]: Without dead ends: 115 [2021-10-28 09:58:17,660 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 09:58:17,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-10-28 09:58:17,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2021-10-28 09:58:17,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 112 states have (on average 1.5) internal successors, (168), 114 states have internal predecessors, (168), 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 09:58:17,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 168 transitions. [2021-10-28 09:58:17,707 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 168 transitions. Word has length 16 [2021-10-28 09:58:17,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:17,707 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 168 transitions. [2021-10-28 09:58:17,708 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 09:58:17,708 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 168 transitions. [2021-10-28 09:58:17,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 09:58:17,709 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:17,709 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 09:58:17,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:58:17,710 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 09:58:17,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:17,711 INFO L85 PathProgramCache]: Analyzing trace with hash -323074868, now seen corresponding path program 1 times [2021-10-28 09:58:17,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:17,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962900394] [2021-10-28 09:58:17,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:17,712 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:17,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:17,823 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 09:58:17,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:17,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962900394] [2021-10-28 09:58:17,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962900394] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:17,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:17,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:58:17,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102126726] [2021-10-28 09:58:17,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:58:17,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:17,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:58:17,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:58:17,827 INFO L87 Difference]: Start difference. First operand 115 states and 168 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 09:58:17,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:17,839 INFO L93 Difference]: Finished difference Result 115 states and 168 transitions. [2021-10-28 09:58:17,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:58:17,840 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 09:58:17,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:17,841 INFO L225 Difference]: With dead ends: 115 [2021-10-28 09:58:17,841 INFO L226 Difference]: Without dead ends: 49 [2021-10-28 09:58:17,842 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 09:58:17,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-28 09:58:17,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-10-28 09:58:17,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 48 states have internal predecessors, (71), 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 09:58:17,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 71 transitions. [2021-10-28 09:58:17,848 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 71 transitions. Word has length 17 [2021-10-28 09:58:17,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:17,848 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 71 transitions. [2021-10-28 09:58:17,849 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 09:58:17,849 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 71 transitions. [2021-10-28 09:58:17,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 09:58:17,850 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:17,850 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 09:58:17,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:58:17,850 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 09:58:17,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:17,851 INFO L85 PathProgramCache]: Analyzing trace with hash -426243093, now seen corresponding path program 1 times [2021-10-28 09:58:17,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:17,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133529759] [2021-10-28 09:58:17,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:17,852 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:17,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:18,003 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 09:58:18,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:18,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133529759] [2021-10-28 09:58:18,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133529759] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:18,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:18,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:58:18,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973395551] [2021-10-28 09:58:18,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:58:18,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:18,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:58:18,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:58:18,007 INFO L87 Difference]: Start difference. First operand 49 states and 71 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 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 09:58:18,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:18,036 INFO L93 Difference]: Finished difference Result 135 states and 201 transitions. [2021-10-28 09:58:18,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:58:18,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 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 09:58:18,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:18,042 INFO L225 Difference]: With dead ends: 135 [2021-10-28 09:58:18,042 INFO L226 Difference]: Without dead ends: 92 [2021-10-28 09:58:18,043 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 09:58:18,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-28 09:58:18,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2021-10-28 09:58:18,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.5057471264367817) internal successors, (131), 87 states have internal predecessors, (131), 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 09:58:18,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 131 transitions. [2021-10-28 09:58:18,055 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 131 transitions. Word has length 22 [2021-10-28 09:58:18,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:18,055 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 131 transitions. [2021-10-28 09:58:18,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 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 09:58:18,056 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 131 transitions. [2021-10-28 09:58:18,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 09:58:18,057 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:18,057 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 09:58:18,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:58:18,058 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 09:58:18,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:18,058 INFO L85 PathProgramCache]: Analyzing trace with hash 844046893, now seen corresponding path program 1 times [2021-10-28 09:58:18,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:18,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220698437] [2021-10-28 09:58:18,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:18,059 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:18,121 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 09:58:18,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:18,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220698437] [2021-10-28 09:58:18,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220698437] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:18,122 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:18,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:58:18,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008927460] [2021-10-28 09:58:18,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:58:18,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:18,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:58:18,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:58:18,125 INFO L87 Difference]: Start difference. First operand 88 states and 131 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 09:58:18,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:18,158 INFO L93 Difference]: Finished difference Result 211 states and 318 transitions. [2021-10-28 09:58:18,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:58:18,158 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 09:58:18,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:18,160 INFO L225 Difference]: With dead ends: 211 [2021-10-28 09:58:18,160 INFO L226 Difference]: Without dead ends: 129 [2021-10-28 09:58:18,161 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 09:58:18,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-10-28 09:58:18,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 127. [2021-10-28 09:58:18,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.4682539682539681) internal successors, (185), 126 states have internal predecessors, (185), 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 09:58:18,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 185 transitions. [2021-10-28 09:58:18,179 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 185 transitions. Word has length 24 [2021-10-28 09:58:18,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:18,179 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 185 transitions. [2021-10-28 09:58:18,180 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 09:58:18,180 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 185 transitions. [2021-10-28 09:58:18,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-28 09:58:18,181 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:18,181 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 09:58:18,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 09:58:18,182 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 09:58:18,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:18,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1604149312, now seen corresponding path program 1 times [2021-10-28 09:58:18,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:18,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252316210] [2021-10-28 09:58:18,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:18,183 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:18,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:18,313 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 09:58:18,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:18,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252316210] [2021-10-28 09:58:18,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252316210] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:18,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:18,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:58:18,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471866057] [2021-10-28 09:58:18,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:58:18,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:18,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:58:18,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:58:18,319 INFO L87 Difference]: Start difference. First operand 127 states and 185 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 09:58:18,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:18,434 INFO L93 Difference]: Finished difference Result 683 states and 1014 transitions. [2021-10-28 09:58:18,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:58:18,435 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 09:58:18,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:18,441 INFO L225 Difference]: With dead ends: 683 [2021-10-28 09:58:18,441 INFO L226 Difference]: Without dead ends: 562 [2021-10-28 09:58:18,444 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 09:58:18,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-10-28 09:58:18,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 238. [2021-10-28 09:58:18,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.4472573839662448) internal successors, (343), 237 states have internal predecessors, (343), 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 09:58:18,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 343 transitions. [2021-10-28 09:58:18,494 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 343 transitions. Word has length 25 [2021-10-28 09:58:18,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:18,494 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 343 transitions. [2021-10-28 09:58:18,495 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 09:58:18,496 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 343 transitions. [2021-10-28 09:58:18,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 09:58:18,498 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:18,498 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 09:58:18,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 09:58:18,499 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 09:58:18,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:18,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1807956406, now seen corresponding path program 1 times [2021-10-28 09:58:18,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:18,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343286100] [2021-10-28 09:58:18,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:18,500 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:18,599 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 09:58:18,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:18,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343286100] [2021-10-28 09:58:18,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343286100] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:18,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:18,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:58:18,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998871961] [2021-10-28 09:58:18,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:58:18,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:18,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:58:18,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:58:18,608 INFO L87 Difference]: Start difference. First operand 238 states and 343 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 09:58:18,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:18,815 INFO L93 Difference]: Finished difference Result 684 states and 990 transitions. [2021-10-28 09:58:18,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:58:18,816 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 09:58:18,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:18,820 INFO L225 Difference]: With dead ends: 684 [2021-10-28 09:58:18,820 INFO L226 Difference]: Without dead ends: 682 [2021-10-28 09:58:18,821 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 09:58:18,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2021-10-28 09:58:18,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 238. [2021-10-28 09:58:18,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.4388185654008439) internal successors, (341), 237 states have internal predecessors, (341), 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 09:58:18,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 341 transitions. [2021-10-28 09:58:18,845 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 341 transitions. Word has length 26 [2021-10-28 09:58:18,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:18,846 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 341 transitions. [2021-10-28 09:58:18,846 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 09:58:18,846 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 341 transitions. [2021-10-28 09:58:18,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-28 09:58:18,848 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:18,849 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] [2021-10-28 09:58:18,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 09:58:18,849 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 09:58:18,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:18,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1131451540, now seen corresponding path program 1 times [2021-10-28 09:58:18,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:18,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900687576] [2021-10-28 09:58:18,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:18,851 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:18,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:18,913 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 09:58:18,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:18,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900687576] [2021-10-28 09:58:18,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900687576] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:18,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:18,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:58:18,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343538709] [2021-10-28 09:58:18,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:58:18,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:18,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:58:18,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:58:18,916 INFO L87 Difference]: Start difference. First operand 238 states and 341 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 09:58:19,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:19,022 INFO L93 Difference]: Finished difference Result 650 states and 916 transitions. [2021-10-28 09:58:19,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:58:19,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 31 [2021-10-28 09:58:19,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:19,027 INFO L225 Difference]: With dead ends: 650 [2021-10-28 09:58:19,027 INFO L226 Difference]: Without dead ends: 418 [2021-10-28 09:58:19,030 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 09:58:19,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-10-28 09:58:19,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 262. [2021-10-28 09:58:19,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 261 states have (on average 1.3984674329501916) internal successors, (365), 261 states have internal predecessors, (365), 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 09:58:19,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 365 transitions. [2021-10-28 09:58:19,057 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 365 transitions. Word has length 31 [2021-10-28 09:58:19,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:19,059 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 365 transitions. [2021-10-28 09:58:19,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 09:58:19,060 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 365 transitions. [2021-10-28 09:58:19,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-28 09:58:19,068 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:19,068 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] [2021-10-28 09:58:19,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 09:58:19,069 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 09:58:19,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:19,069 INFO L85 PathProgramCache]: Analyzing trace with hash 738424530, now seen corresponding path program 1 times [2021-10-28 09:58:19,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:19,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472080195] [2021-10-28 09:58:19,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:19,072 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:19,147 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 09:58:19,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:19,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472080195] [2021-10-28 09:58:19,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472080195] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:19,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:19,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:58:19,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614404181] [2021-10-28 09:58:19,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:58:19,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:19,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:58:19,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:58:19,150 INFO L87 Difference]: Start difference. First operand 262 states and 365 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 09:58:19,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:19,264 INFO L93 Difference]: Finished difference Result 734 states and 1001 transitions. [2021-10-28 09:58:19,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:58:19,265 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 31 [2021-10-28 09:58:19,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:19,269 INFO L225 Difference]: With dead ends: 734 [2021-10-28 09:58:19,269 INFO L226 Difference]: Without dead ends: 478 [2021-10-28 09:58:19,270 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 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 09:58:19,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2021-10-28 09:58:19,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 278. [2021-10-28 09:58:19,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 277 states have (on average 1.3754512635379061) internal successors, (381), 277 states have internal predecessors, (381), 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 09:58:19,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 381 transitions. [2021-10-28 09:58:19,297 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 381 transitions. Word has length 31 [2021-10-28 09:58:19,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:19,297 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 381 transitions. [2021-10-28 09:58:19,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 09:58:19,298 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 381 transitions. [2021-10-28 09:58:19,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-28 09:58:19,300 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:19,300 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] [2021-10-28 09:58:19,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 09:58:19,301 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 09:58:19,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:19,301 INFO L85 PathProgramCache]: Analyzing trace with hash 996589968, now seen corresponding path program 1 times [2021-10-28 09:58:19,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:19,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834071688] [2021-10-28 09:58:19,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:19,302 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:19,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:19,364 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 09:58:19,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:19,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834071688] [2021-10-28 09:58:19,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834071688] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:19,365 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:19,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:58:19,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458107145] [2021-10-28 09:58:19,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:58:19,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:19,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:58:19,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:58:19,369 INFO L87 Difference]: Start difference. First operand 278 states and 381 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 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 09:58:19,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:19,432 INFO L93 Difference]: Finished difference Result 654 states and 890 transitions. [2021-10-28 09:58:19,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:58:19,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 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 31 [2021-10-28 09:58:19,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:19,435 INFO L225 Difference]: With dead ends: 654 [2021-10-28 09:58:19,436 INFO L226 Difference]: Without dead ends: 382 [2021-10-28 09:58:19,440 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 09:58:19,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-10-28 09:58:19,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2021-10-28 09:58:19,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 1.330708661417323) internal successors, (507), 381 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 09:58:19,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 507 transitions. [2021-10-28 09:58:19,479 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 507 transitions. Word has length 31 [2021-10-28 09:58:19,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:19,479 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 507 transitions. [2021-10-28 09:58:19,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 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 09:58:19,479 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 507 transitions. [2021-10-28 09:58:19,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-28 09:58:19,480 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:19,480 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] [2021-10-28 09:58:19,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 09:58:19,481 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 09:58:19,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:19,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1116169902, now seen corresponding path program 1 times [2021-10-28 09:58:19,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:19,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996989797] [2021-10-28 09:58:19,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:19,484 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:19,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:58:19,558 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:58:19,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:58:19,678 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:58:19,678 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:58:19,679 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:58:19,681 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:58:19,682 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:58:19,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 09:58:19,686 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:19,689 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:58:19,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:58:19 BoogieIcfgContainer [2021-10-28 09:58:19,821 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:58:19,822 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:58:19,822 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:58:19,823 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:58:19,823 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:58:17" (3/4) ... [2021-10-28 09:58:19,825 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 09:58:19,941 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1498f9-6a1a-4339-b708-e557d0e38f26/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:58:19,941 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:58:19,943 INFO L168 Benchmark]: Toolchain (without parser) took 4350.36 ms. Allocated memory was 102.8 MB in the beginning and 157.3 MB in the end (delta: 54.5 MB). Free memory was 60.0 MB in the beginning and 55.1 MB in the end (delta: 4.9 MB). Peak memory consumption was 60.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:58:19,943 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 102.8 MB. Free memory is still 77.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:58:19,944 INFO L168 Benchmark]: CACSL2BoogieTranslator took 473.12 ms. Allocated memory is still 102.8 MB. Free memory was 59.8 MB in the beginning and 69.0 MB in the end (delta: -9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:58:19,945 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.72 ms. Allocated memory is still 102.8 MB. Free memory was 69.0 MB in the beginning and 65.3 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:58:19,945 INFO L168 Benchmark]: Boogie Preprocessor took 44.38 ms. Allocated memory is still 102.8 MB. Free memory was 65.3 MB in the beginning and 62.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:58:19,946 INFO L168 Benchmark]: RCFGBuilder took 980.29 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 62.6 MB in the beginning and 81.5 MB in the end (delta: -18.9 MB). Peak memory consumption was 38.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:58:19,946 INFO L168 Benchmark]: TraceAbstraction took 2652.92 ms. Allocated memory was 123.7 MB in the beginning and 157.3 MB in the end (delta: 33.6 MB). Free memory was 80.8 MB in the beginning and 68.7 MB in the end (delta: 12.1 MB). Peak memory consumption was 45.0 MB. Max. memory is 16.1 GB. [2021-10-28 09:58:19,946 INFO L168 Benchmark]: Witness Printer took 118.86 ms. Allocated memory is still 157.3 MB. Free memory was 68.7 MB in the beginning and 55.1 MB in the end (delta: 13.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-28 09:58:19,949 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 102.8 MB. Free memory is still 77.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 473.12 ms. Allocated memory is still 102.8 MB. Free memory was 59.8 MB in the beginning and 69.0 MB in the end (delta: -9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 73.72 ms. Allocated memory is still 102.8 MB. Free memory was 69.0 MB in the beginning and 65.3 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.38 ms. Allocated memory is still 102.8 MB. Free memory was 65.3 MB in the beginning and 62.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 980.29 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 62.6 MB in the beginning and 81.5 MB in the end (delta: -18.9 MB). Peak memory consumption was 38.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2652.92 ms. Allocated memory was 123.7 MB in the beginning and 157.3 MB in the end (delta: 33.6 MB). Free memory was 80.8 MB in the beginning and 68.7 MB in the end (delta: 12.1 MB). Peak memory consumption was 45.0 MB. Max. memory is 16.1 GB. * Witness Printer took 118.86 ms. Allocated memory is still 157.3 MB. Free memory was 68.7 MB in the beginning and 55.1 MB in the end (delta: 13.6 MB). Peak memory consumption was 14.7 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: 714]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L131] int pumpRunning = 0; [L132] int systemActive = 1; [L513] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L783] int cleanupTimeShifts = 4; [L880] int waterLevel = 1; [L881] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L856] int retValue_acc ; [L857] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L748] int retValue_acc ; [L751] retValue_acc = 1 [L752] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L863] tmp = valid_product() [L865] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L56] int splverifierCounter ; [L57] int tmp ; [L58] int tmp___0 ; [L59] int tmp___1 ; [L60] int tmp___2 ; [L63] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L65] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L67] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L73] tmp = __VERIFIER_nondet_int() [L75] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L898] COND TRUE waterLevel < 2 [L899] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L83] tmp___0 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L910] COND FALSE !(\read(methaneLevelCritical)) [L913] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L93] tmp___2 = __VERIFIER_nondet_int() [L95] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L139] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L146] COND TRUE \read(systemActive) [L194] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L197] COND FALSE !(\read(pumpRunning)) [L168] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L171] COND TRUE ! pumpRunning [L291] int retValue_acc ; [L292] int tmp ; [L293] int tmp___0 ; [L960] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L963] COND FALSE !(waterLevel < 2) [L967] retValue_acc = 0 [L968] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L297] tmp = isHighWaterSensorDry() [L299] COND FALSE !(\read(tmp)) [L302] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L304] retValue_acc = tmp___0 [L305] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L173] tmp = isHighWaterLevel() [L175] COND TRUE \read(tmp) [L222] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L758] int tmp ; [L759] int tmp___0 ; [L919] int retValue_acc ; [L922] retValue_acc = methaneLevelCritical [L923] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L763] tmp = isMethaneLevelCritical() [L765] COND TRUE \read(tmp) [L246] int retValue_acc ; [L249] retValue_acc = pumpRunning [L250] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L767] tmp___0 = isPumpRunning() [L769] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L714] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - UnprovableResult [Line: 714]: 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: 714]: 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, 119 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 2.4s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 875 SDtfs, 1188 SDslu, 1284 SDs, 0 SdLazy, 160 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=382occurred in iteration=9, InterpolantAutomatonStates: 46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 1130 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 255 NumberOfCodeBlocks, 255 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 214 ConstructedInterpolants, 0 QuantifiedInterpolants, 454 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-28 09:58:20,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1498f9-6a1a-4339-b708-e557d0e38f26/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...