./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product36.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_d5494281-af25-49a4-8781-1f4fcb9d705f/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5494281-af25-49a4-8781-1f4fcb9d705f/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5494281-af25-49a4-8781-1f4fcb9d705f/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5494281-af25-49a4-8781-1f4fcb9d705f/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5494281-af25-49a4-8781-1f4fcb9d705f/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5494281-af25-49a4-8781-1f4fcb9d705f/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1849026681bb840017399851b7fbd7074a9bb56e2104927ac4a62c52d8de2e86 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 22:56:42,317 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 22:56:42,320 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 22:56:42,366 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 22:56:42,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 22:56:42,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 22:56:42,371 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 22:56:42,375 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 22:56:42,378 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 22:56:42,379 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 22:56:42,381 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 22:56:42,383 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 22:56:42,384 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 22:56:42,386 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 22:56:42,388 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 22:56:42,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 22:56:42,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 22:56:42,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 22:56:42,397 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 22:56:42,401 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 22:56:42,403 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 22:56:42,414 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 22:56:42,416 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 22:56:42,417 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 22:56:42,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 22:56:42,423 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 22:56:42,423 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 22:56:42,425 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 22:56:42,426 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 22:56:42,427 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 22:56:42,428 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 22:56:42,429 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 22:56:42,431 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 22:56:42,432 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 22:56:42,434 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 22:56:42,434 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 22:56:42,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 22:56:42,436 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 22:56:42,436 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 22:56:42,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 22:56:42,439 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 22:56:42,440 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5494281-af25-49a4-8781-1f4fcb9d705f/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 22:56:42,473 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 22:56:42,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 22:56:42,474 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 22:56:42,474 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 22:56:42,476 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 22:56:42,476 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 22:56:42,477 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 22:56:42,477 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 22:56:42,478 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 22:56:42,478 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 22:56:42,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 22:56:42,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 22:56:42,480 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 22:56:42,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 22:56:42,480 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 22:56:42,481 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 22:56:42,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 22:56:42,485 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 22:56:42,486 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 22:56:42,486 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 22:56:42,487 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 22:56:42,487 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 22:56:42,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:56:42,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 22:56:42,488 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 22:56:42,489 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 22:56:42,489 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 22:56:42,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 22:56:42,490 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 22:56:42,492 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 22:56:42,492 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 22:56:42,493 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 22:56:42,493 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_d5494281-af25-49a4-8781-1f4fcb9d705f/bin/uautomizer-GMMbpWq8iD/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5494281-af25-49a4-8781-1f4fcb9d705f/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1849026681bb840017399851b7fbd7074a9bb56e2104927ac4a62c52d8de2e86 [2021-10-28 22:56:42,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 22:56:42,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 22:56:42,934 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 22:56:42,936 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 22:56:42,937 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 22:56:42,938 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5494281-af25-49a4-8781-1f4fcb9d705f/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c [2021-10-28 22:56:43,080 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5494281-af25-49a4-8781-1f4fcb9d705f/bin/uautomizer-GMMbpWq8iD/data/7b67279e7/f117e3a084c24676b2f5f530f77c723d/FLAG3f0ff3adc [2021-10-28 22:56:43,888 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 22:56:43,889 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5494281-af25-49a4-8781-1f4fcb9d705f/sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c [2021-10-28 22:56:43,908 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5494281-af25-49a4-8781-1f4fcb9d705f/bin/uautomizer-GMMbpWq8iD/data/7b67279e7/f117e3a084c24676b2f5f530f77c723d/FLAG3f0ff3adc [2021-10-28 22:56:44,142 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5494281-af25-49a4-8781-1f4fcb9d705f/bin/uautomizer-GMMbpWq8iD/data/7b67279e7/f117e3a084c24676b2f5f530f77c723d [2021-10-28 22:56:44,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 22:56:44,149 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 22:56:44,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 22:56:44,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 22:56:44,156 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 22:56:44,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:56:44" (1/1) ... [2021-10-28 22:56:44,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@214e50ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:56:44, skipping insertion in model container [2021-10-28 22:56:44,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:56:44" (1/1) ... [2021-10-28 22:56:44,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 22:56:44,246 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 22:56:44,886 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_d5494281-af25-49a4-8781-1f4fcb9d705f/sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c[17676,17689] [2021-10-28 22:56:44,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:56:44,914 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 22:56:45,078 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_d5494281-af25-49a4-8781-1f4fcb9d705f/sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c[17676,17689] [2021-10-28 22:56:45,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:56:45,123 INFO L208 MainTranslator]: Completed translation [2021-10-28 22:56:45,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:56:45 WrapperNode [2021-10-28 22:56:45,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 22:56:45,127 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 22:56:45,127 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 22:56:45,127 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 22:56:45,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:56:45" (1/1) ... [2021-10-28 22:56:45,185 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:56:45" (1/1) ... [2021-10-28 22:56:45,269 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 22:56:45,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 22:56:45,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 22:56:45,271 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 22:56:45,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:56:45" (1/1) ... [2021-10-28 22:56:45,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:56:45" (1/1) ... [2021-10-28 22:56:45,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:56:45" (1/1) ... [2021-10-28 22:56:45,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:56:45" (1/1) ... [2021-10-28 22:56:45,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:56:45" (1/1) ... [2021-10-28 22:56:45,364 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:56:45" (1/1) ... [2021-10-28 22:56:45,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:56:45" (1/1) ... [2021-10-28 22:56:45,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 22:56:45,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 22:56:45,373 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 22:56:45,373 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 22:56:45,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:56:45" (1/1) ... [2021-10-28 22:56:45,387 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:56:45,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5494281-af25-49a4-8781-1f4fcb9d705f/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:56:45,428 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5494281-af25-49a4-8781-1f4fcb9d705f/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 22:56:45,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5494281-af25-49a4-8781-1f4fcb9d705f/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 22:56:45,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 22:56:45,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 22:56:45,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 22:56:45,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 22:56:46,773 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 22:56:46,774 INFO L299 CfgBuilder]: Removed 104 assume(true) statements. [2021-10-28 22:56:46,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:56:46 BoogieIcfgContainer [2021-10-28 22:56:46,777 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 22:56:46,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 22:56:46,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 22:56:46,787 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 22:56:46,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:56:44" (1/3) ... [2021-10-28 22:56:46,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bc2ec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:56:46, skipping insertion in model container [2021-10-28 22:56:46,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:56:45" (2/3) ... [2021-10-28 22:56:46,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bc2ec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:56:46, skipping insertion in model container [2021-10-28 22:56:46,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:56:46" (3/3) ... [2021-10-28 22:56:46,792 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product36.cil.c [2021-10-28 22:56:46,802 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 22:56:46,803 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-28 22:56:46,880 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 22:56:46,890 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 22:56:46,890 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-28 22:56:46,912 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 80 states have (on average 1.5875) internal successors, (127), 83 states have internal predecessors, (127), 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 22:56:46,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 22:56:46,922 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:56:46,923 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:56:46,924 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 22:56:46,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:56:46,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1480559057, now seen corresponding path program 1 times [2021-10-28 22:56:46,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:56:46,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132886876] [2021-10-28 22:56:46,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:56:46,946 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:56:47,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:56:47,300 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 22:56:47,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:56:47,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132886876] [2021-10-28 22:56:47,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132886876] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:56:47,303 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:56:47,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 22:56:47,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836726054] [2021-10-28 22:56:47,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 22:56:47,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:56:47,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 22:56:47,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 22:56:47,334 INFO L87 Difference]: Start difference. First operand has 84 states, 80 states have (on average 1.5875) internal successors, (127), 83 states have internal predecessors, (127), 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 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:56:47,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:56:47,369 INFO L93 Difference]: Finished difference Result 161 states and 246 transitions. [2021-10-28 22:56:47,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 22:56:47,371 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-28 22:56:47,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:56:47,385 INFO L225 Difference]: With dead ends: 161 [2021-10-28 22:56:47,386 INFO L226 Difference]: Without dead ends: 80 [2021-10-28 22:56:47,390 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 22:56:47,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-28 22:56:47,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-10-28 22:56:47,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 77 states have (on average 1.4935064935064934) internal successors, (115), 79 states have internal predecessors, (115), 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 22:56:47,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 115 transitions. [2021-10-28 22:56:47,443 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 115 transitions. Word has length 18 [2021-10-28 22:56:47,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:56:47,444 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 115 transitions. [2021-10-28 22:56:47,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:56:47,445 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 115 transitions. [2021-10-28 22:56:47,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 22:56:47,447 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:56:47,447 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:56:47,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 22:56:47,448 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 22:56:47,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:56:47,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1228794243, now seen corresponding path program 1 times [2021-10-28 22:56:47,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:56:47,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624999183] [2021-10-28 22:56:47,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:56:47,451 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:56:47,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:56:47,583 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 22:56:47,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:56:47,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624999183] [2021-10-28 22:56:47,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624999183] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:56:47,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:56:47,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 22:56:47,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770430846] [2021-10-28 22:56:47,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 22:56:47,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:56:47,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 22:56:47,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 22:56:47,590 INFO L87 Difference]: Start difference. First operand 80 states and 115 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:56:47,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:56:47,604 INFO L93 Difference]: Finished difference Result 80 states and 115 transitions. [2021-10-28 22:56:47,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 22:56:47,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-28 22:56:47,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:56:47,607 INFO L225 Difference]: With dead ends: 80 [2021-10-28 22:56:47,607 INFO L226 Difference]: Without dead ends: 38 [2021-10-28 22:56:47,609 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 22:56:47,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-28 22:56:47,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-10-28 22:56:47,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.4594594594594594) internal successors, (54), 37 states have internal predecessors, (54), 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 22:56:47,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 54 transitions. [2021-10-28 22:56:47,617 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 54 transitions. Word has length 19 [2021-10-28 22:56:47,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:56:47,618 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 54 transitions. [2021-10-28 22:56:47,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:56:47,618 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 54 transitions. [2021-10-28 22:56:47,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 22:56:47,620 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:56:47,620 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 22:56:47,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 22:56:47,621 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 22:56:47,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:56:47,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1219405376, now seen corresponding path program 1 times [2021-10-28 22:56:47,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:56:47,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792866684] [2021-10-28 22:56:47,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:56:47,624 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:56:47,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:56:47,804 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 22:56:47,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:56:47,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792866684] [2021-10-28 22:56:47,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792866684] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:56:47,806 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:56:47,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 22:56:47,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198204269] [2021-10-28 22:56:47,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 22:56:47,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:56:47,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 22:56:47,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 22:56:47,809 INFO L87 Difference]: Start difference. First operand 38 states and 54 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 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 22:56:47,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:56:47,855 INFO L93 Difference]: Finished difference Result 100 states and 148 transitions. [2021-10-28 22:56:47,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 22:56:47,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 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 22:56:47,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:56:47,858 INFO L225 Difference]: With dead ends: 100 [2021-10-28 22:56:47,858 INFO L226 Difference]: Without dead ends: 69 [2021-10-28 22:56:47,859 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 22:56:47,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-10-28 22:56:47,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2021-10-28 22:56:47,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.5) internal successors, (96), 64 states have internal predecessors, (96), 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 22:56:47,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 96 transitions. [2021-10-28 22:56:47,874 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 96 transitions. Word has length 24 [2021-10-28 22:56:47,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:56:47,875 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 96 transitions. [2021-10-28 22:56:47,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 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 22:56:47,875 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 96 transitions. [2021-10-28 22:56:47,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-28 22:56:47,877 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:56:47,877 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 22:56:47,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 22:56:47,878 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 22:56:47,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:56:47,878 INFO L85 PathProgramCache]: Analyzing trace with hash 999444121, now seen corresponding path program 1 times [2021-10-28 22:56:47,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:56:47,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784824644] [2021-10-28 22:56:47,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:56:47,880 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:56:47,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:56:47,964 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 22:56:47,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:56:47,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784824644] [2021-10-28 22:56:47,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784824644] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:56:47,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:56:47,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 22:56:47,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619047256] [2021-10-28 22:56:47,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 22:56:47,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:56:47,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 22:56:47,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 22:56:47,969 INFO L87 Difference]: Start difference. First operand 65 states and 96 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 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 22:56:48,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:56:48,036 INFO L93 Difference]: Finished difference Result 166 states and 251 transitions. [2021-10-28 22:56:48,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 22:56:48,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 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 22:56:48,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:56:48,040 INFO L225 Difference]: With dead ends: 166 [2021-10-28 22:56:48,040 INFO L226 Difference]: Without dead ends: 108 [2021-10-28 22:56:48,041 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 22:56:48,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-10-28 22:56:48,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2021-10-28 22:56:48,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.4857142857142858) internal successors, (156), 105 states have internal predecessors, (156), 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 22:56:48,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 156 transitions. [2021-10-28 22:56:48,064 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 156 transitions. Word has length 25 [2021-10-28 22:56:48,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:56:48,064 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 156 transitions. [2021-10-28 22:56:48,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 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 22:56:48,065 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 156 transitions. [2021-10-28 22:56:48,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-28 22:56:48,067 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:56:48,067 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] [2021-10-28 22:56:48,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 22:56:48,068 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 22:56:48,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:56:48,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1239284745, now seen corresponding path program 1 times [2021-10-28 22:56:48,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:56:48,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839335324] [2021-10-28 22:56:48,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:56:48,070 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:56:48,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:56:48,170 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 22:56:48,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:56:48,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839335324] [2021-10-28 22:56:48,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839335324] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:56:48,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:56:48,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 22:56:48,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785578281] [2021-10-28 22:56:48,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 22:56:48,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:56:48,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 22:56:48,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:56:48,175 INFO L87 Difference]: Start difference. First operand 106 states and 156 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 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 22:56:48,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:56:48,341 INFO L93 Difference]: Finished difference Result 510 states and 765 transitions. [2021-10-28 22:56:48,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 22:56:48,342 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 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 27 [2021-10-28 22:56:48,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:56:48,348 INFO L225 Difference]: With dead ends: 510 [2021-10-28 22:56:48,349 INFO L226 Difference]: Without dead ends: 411 [2021-10-28 22:56:48,354 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 22:56:48,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2021-10-28 22:56:48,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 191. [2021-10-28 22:56:48,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 1.4526315789473685) internal successors, (276), 190 states have internal predecessors, (276), 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 22:56:48,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 276 transitions. [2021-10-28 22:56:48,428 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 276 transitions. Word has length 27 [2021-10-28 22:56:48,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:56:48,429 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 276 transitions. [2021-10-28 22:56:48,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 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 22:56:48,430 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 276 transitions. [2021-10-28 22:56:48,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-28 22:56:48,431 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:56:48,432 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] [2021-10-28 22:56:48,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 22:56:48,433 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 22:56:48,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:56:48,433 INFO L85 PathProgramCache]: Analyzing trace with hash -194860415, now seen corresponding path program 1 times [2021-10-28 22:56:48,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:56:48,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341751290] [2021-10-28 22:56:48,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:56:48,434 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:56:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:56:48,557 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 22:56:48,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:56:48,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341751290] [2021-10-28 22:56:48,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341751290] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:56:48,558 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:56:48,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 22:56:48,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070494894] [2021-10-28 22:56:48,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 22:56:48,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:56:48,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 22:56:48,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:56:48,561 INFO L87 Difference]: Start difference. First operand 191 states and 276 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:56:48,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:56:48,747 INFO L93 Difference]: Finished difference Result 709 states and 1031 transitions. [2021-10-28 22:56:48,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 22:56:48,748 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-28 22:56:48,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:56:48,761 INFO L225 Difference]: With dead ends: 709 [2021-10-28 22:56:48,762 INFO L226 Difference]: Without dead ends: 525 [2021-10-28 22:56:48,764 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 22:56:48,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2021-10-28 22:56:48,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 189. [2021-10-28 22:56:48,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 1.4361702127659575) internal successors, (270), 188 states have internal predecessors, (270), 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 22:56:48,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 270 transitions. [2021-10-28 22:56:48,815 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 270 transitions. Word has length 28 [2021-10-28 22:56:48,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:56:48,816 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 270 transitions. [2021-10-28 22:56:48,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:56:48,817 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 270 transitions. [2021-10-28 22:56:48,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-28 22:56:48,830 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:56:48,831 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 22:56:48,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 22:56:48,831 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 22:56:48,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:56:48,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1409937664, now seen corresponding path program 1 times [2021-10-28 22:56:48,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:56:48,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006511863] [2021-10-28 22:56:48,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:56:48,842 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:56:48,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:56:48,944 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 22:56:48,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:56:48,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006511863] [2021-10-28 22:56:48,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006511863] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:56:48,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:56:48,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 22:56:48,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860771070] [2021-10-28 22:56:48,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 22:56:48,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:56:48,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 22:56:48,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:56:48,948 INFO L87 Difference]: Start difference. First operand 189 states and 270 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 22:56:49,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:56:49,028 INFO L93 Difference]: Finished difference Result 515 states and 728 transitions. [2021-10-28 22:56:49,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 22:56:49,029 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 32 [2021-10-28 22:56:49,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:56:49,034 INFO L225 Difference]: With dead ends: 515 [2021-10-28 22:56:49,034 INFO L226 Difference]: Without dead ends: 333 [2021-10-28 22:56:49,036 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 22:56:49,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-10-28 22:56:49,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 201. [2021-10-28 22:56:49,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.41) internal successors, (282), 200 states have internal predecessors, (282), 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 22:56:49,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 282 transitions. [2021-10-28 22:56:49,060 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 282 transitions. Word has length 32 [2021-10-28 22:56:49,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:56:49,061 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 282 transitions. [2021-10-28 22:56:49,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 22:56:49,061 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 282 transitions. [2021-10-28 22:56:49,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-28 22:56:49,063 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:56:49,063 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 22:56:49,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 22:56:49,064 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 22:56:49,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:56:49,064 INFO L85 PathProgramCache]: Analyzing trace with hash 2111002242, now seen corresponding path program 1 times [2021-10-28 22:56:49,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:56:49,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194225908] [2021-10-28 22:56:49,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:56:49,067 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:56:49,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:56:49,216 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 22:56:49,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:56:49,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194225908] [2021-10-28 22:56:49,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194225908] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:56:49,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:56:49,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 22:56:49,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469404526] [2021-10-28 22:56:49,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 22:56:49,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:56:49,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 22:56:49,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:56:49,219 INFO L87 Difference]: Start difference. First operand 201 states and 282 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 22:56:49,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:56:49,369 INFO L93 Difference]: Finished difference Result 583 states and 802 transitions. [2021-10-28 22:56:49,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 22:56:49,370 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 32 [2021-10-28 22:56:49,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:56:49,374 INFO L225 Difference]: With dead ends: 583 [2021-10-28 22:56:49,374 INFO L226 Difference]: Without dead ends: 389 [2021-10-28 22:56:49,375 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 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 22:56:49,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-10-28 22:56:49,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 209. [2021-10-28 22:56:49,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.3942307692307692) internal successors, (290), 208 states have internal predecessors, (290), 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 22:56:49,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 290 transitions. [2021-10-28 22:56:49,405 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 290 transitions. Word has length 32 [2021-10-28 22:56:49,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:56:49,406 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 290 transitions. [2021-10-28 22:56:49,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 22:56:49,407 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 290 transitions. [2021-10-28 22:56:49,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-28 22:56:49,408 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:56:49,408 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 22:56:49,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 22:56:49,410 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 22:56:49,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:56:49,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1524196228, now seen corresponding path program 1 times [2021-10-28 22:56:49,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:56:49,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095849908] [2021-10-28 22:56:49,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:56:49,411 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:56:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:56:49,505 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 22:56:49,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:56:49,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095849908] [2021-10-28 22:56:49,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095849908] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:56:49,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:56:49,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 22:56:49,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925088057] [2021-10-28 22:56:49,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 22:56:49,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:56:49,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 22:56:49,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 22:56:49,516 INFO L87 Difference]: Start difference. First operand 209 states and 290 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 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 22:56:49,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:56:49,582 INFO L93 Difference]: Finished difference Result 511 states and 703 transitions. [2021-10-28 22:56:49,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 22:56:49,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 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 32 [2021-10-28 22:56:49,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:56:49,588 INFO L225 Difference]: With dead ends: 511 [2021-10-28 22:56:49,588 INFO L226 Difference]: Without dead ends: 309 [2021-10-28 22:56:49,590 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 22:56:49,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-10-28 22:56:49,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2021-10-28 22:56:49,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 308 states have (on average 1.3376623376623376) internal successors, (412), 308 states have internal predecessors, (412), 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 22:56:49,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 412 transitions. [2021-10-28 22:56:49,658 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 412 transitions. Word has length 32 [2021-10-28 22:56:49,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:56:49,659 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 412 transitions. [2021-10-28 22:56:49,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 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 22:56:49,660 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 412 transitions. [2021-10-28 22:56:49,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 22:56:49,663 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:56:49,664 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:56:49,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 22:56:49,665 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 22:56:49,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:56:49,665 INFO L85 PathProgramCache]: Analyzing trace with hash 61292740, now seen corresponding path program 1 times [2021-10-28 22:56:49,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:56:49,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668771515] [2021-10-28 22:56:49,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:56:49,669 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:56:49,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:56:49,780 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 22:56:49,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:56:49,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668771515] [2021-10-28 22:56:49,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668771515] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:56:49,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:56:49,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 22:56:49,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022488575] [2021-10-28 22:56:49,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 22:56:49,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:56:49,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 22:56:49,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 22:56:49,783 INFO L87 Difference]: Start difference. First operand 309 states and 412 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 22:56:49,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:56:49,855 INFO L93 Difference]: Finished difference Result 447 states and 603 transitions. [2021-10-28 22:56:49,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 22:56:49,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 33 [2021-10-28 22:56:49,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:56:49,859 INFO L225 Difference]: With dead ends: 447 [2021-10-28 22:56:49,860 INFO L226 Difference]: Without dead ends: 445 [2021-10-28 22:56:49,860 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 22:56:49,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2021-10-28 22:56:49,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 370. [2021-10-28 22:56:49,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 369 states have (on average 1.3658536585365855) internal successors, (504), 369 states have internal predecessors, (504), 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 22:56:49,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 504 transitions. [2021-10-28 22:56:49,907 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 504 transitions. Word has length 33 [2021-10-28 22:56:49,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:56:49,907 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 504 transitions. [2021-10-28 22:56:49,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 22:56:49,908 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 504 transitions. [2021-10-28 22:56:49,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-28 22:56:49,909 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:56:49,910 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:56:49,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 22:56:49,910 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 22:56:49,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:56:49,911 INFO L85 PathProgramCache]: Analyzing trace with hash 290012344, now seen corresponding path program 1 times [2021-10-28 22:56:49,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:56:49,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905275244] [2021-10-28 22:56:49,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:56:49,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:56:50,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:56:50,009 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:56:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:56:50,197 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:56:50,197 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 22:56:50,199 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:56:50,201 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:56:50,202 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:56:50,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 22:56:50,207 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:56:50,211 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 22:56:50,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 10:56:50 BoogieIcfgContainer [2021-10-28 22:56:50,465 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 22:56:50,466 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 22:56:50,466 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 22:56:50,467 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 22:56:50,472 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:56:46" (3/4) ... [2021-10-28 22:56:50,474 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 22:56:50,667 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5494281-af25-49a4-8781-1f4fcb9d705f/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 22:56:50,667 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 22:56:50,670 INFO L168 Benchmark]: Toolchain (without parser) took 6520.12 ms. Allocated memory was 96.5 MB in the beginning and 169.9 MB in the end (delta: 73.4 MB). Free memory was 64.2 MB in the beginning and 110.4 MB in the end (delta: -46.3 MB). Peak memory consumption was 26.8 MB. Max. memory is 16.1 GB. [2021-10-28 22:56:50,670 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 96.5 MB. Free memory is still 49.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:56:50,671 INFO L168 Benchmark]: CACSL2BoogieTranslator took 974.54 ms. Allocated memory was 96.5 MB in the beginning and 134.2 MB in the end (delta: 37.7 MB). Free memory was 64.0 MB in the beginning and 102.6 MB in the end (delta: -38.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 22:56:50,672 INFO L168 Benchmark]: Boogie Procedure Inliner took 142.50 ms. Allocated memory is still 134.2 MB. Free memory was 102.6 MB in the beginning and 99.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 22:56:50,672 INFO L168 Benchmark]: Boogie Preprocessor took 101.50 ms. Allocated memory is still 134.2 MB. Free memory was 99.8 MB in the beginning and 97.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 22:56:50,672 INFO L168 Benchmark]: RCFGBuilder took 1404.44 ms. Allocated memory is still 134.2 MB. Free memory was 97.7 MB in the beginning and 97.9 MB in the end (delta: -166.5 kB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. [2021-10-28 22:56:50,673 INFO L168 Benchmark]: TraceAbstraction took 3684.63 ms. Allocated memory was 134.2 MB in the beginning and 169.9 MB in the end (delta: 35.7 MB). Free memory was 97.9 MB in the beginning and 131.4 MB in the end (delta: -33.5 MB). Peak memory consumption was 89.5 MB. Max. memory is 16.1 GB. [2021-10-28 22:56:50,673 INFO L168 Benchmark]: Witness Printer took 200.99 ms. Allocated memory is still 169.9 MB. Free memory was 131.4 MB in the beginning and 110.4 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-28 22:56:50,676 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 96.5 MB. Free memory is still 49.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 974.54 ms. Allocated memory was 96.5 MB in the beginning and 134.2 MB in the end (delta: 37.7 MB). Free memory was 64.0 MB in the beginning and 102.6 MB in the end (delta: -38.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 142.50 ms. Allocated memory is still 134.2 MB. Free memory was 102.6 MB in the beginning and 99.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 101.50 ms. Allocated memory is still 134.2 MB. Free memory was 99.8 MB in the beginning and 97.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1404.44 ms. Allocated memory is still 134.2 MB. Free memory was 97.7 MB in the beginning and 97.9 MB in the end (delta: -166.5 kB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3684.63 ms. Allocated memory was 134.2 MB in the beginning and 169.9 MB in the end (delta: 35.7 MB). Free memory was 97.9 MB in the beginning and 131.4 MB in the end (delta: -33.5 MB). Peak memory consumption was 89.5 MB. Max. memory is 16.1 GB. * Witness Printer took 200.99 ms. Allocated memory is still 169.9 MB. Free memory was 131.4 MB in the beginning and 110.4 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 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: 910]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L57] int waterLevel = 1; [L58] int methaneLevelCritical = 0; [L320] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L555] int cleanupTimeShifts = 4; [L661] int pumpRunning = 0; [L662] int systemActive = 1; [L915] int methAndRunningLastTime ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L633] int retValue_acc ; [L634] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L546] int retValue_acc ; [L549] retValue_acc = 1 [L550] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L640] tmp = valid_product() [L642] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L920] methAndRunningLastTime = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L838] int splverifierCounter ; [L839] int tmp ; [L840] int tmp___0 ; [L841] int tmp___1 ; [L842] int tmp___2 ; [L845] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L847] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L849] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L855] tmp = __VERIFIER_nondet_int() [L857] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L75] COND TRUE waterLevel < 2 [L76] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L865] tmp___0 = __VERIFIER_nondet_int() [L867] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L87] COND FALSE !(\read(methaneLevelCritical)) [L90] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L875] tmp___2 = __VERIFIER_nondet_int() [L877] COND TRUE \read(tmp___2) [L832] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L669] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L676] COND TRUE \read(systemActive) [L698] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L701] COND TRUE ! pumpRunning [L795] int retValue_acc ; [L796] int tmp ; [L797] int tmp___0 ; [L137] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L140] COND FALSE !(waterLevel < 2) [L144] retValue_acc = 0 [L145] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L801] tmp = isHighWaterSensorDry() [L803] COND FALSE !(\read(tmp)) [L806] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L808] retValue_acc = tmp___0 [L809] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L703] tmp = isHighWaterLevel() [L705] COND TRUE \read(tmp) [L726] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L925] int tmp ; [L926] int tmp___0 ; [L96] int retValue_acc ; [L99] retValue_acc = methaneLevelCritical [L100] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L930] tmp = isMethaneLevelCritical() [L932] COND TRUE \read(tmp) [L750] int retValue_acc ; [L753] retValue_acc = pumpRunning [L754] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L934] tmp___0 = isPumpRunning() [L936] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L937] COND FALSE !(\read(methAndRunningLastTime)) [L942] methAndRunningLastTime = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L847] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L849] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L855] tmp = __VERIFIER_nondet_int() [L857] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L865] tmp___0 = __VERIFIER_nondet_int() [L867] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L875] tmp___2 = __VERIFIER_nondet_int() [L877] COND TRUE \read(tmp___2) [L832] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L669] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L63] COND TRUE waterLevel > 0 [L64] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L676] COND TRUE \read(systemActive) [L698] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L701] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L925] int tmp ; [L926] int tmp___0 ; [L96] int retValue_acc ; [L99] retValue_acc = methaneLevelCritical [L100] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L930] tmp = isMethaneLevelCritical() [L932] COND TRUE \read(tmp) [L750] int retValue_acc ; [L753] retValue_acc = pumpRunning [L754] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L934] tmp___0 = isPumpRunning() [L936] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L937] COND TRUE \read(methAndRunningLastTime) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L910] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] - UnprovableResult [Line: 910]: 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: 910]: 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, 84 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 3.3s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 710 SDtfs, 910 SDslu, 1063 SDs, 0 SdLazy, 124 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=370occurred in iteration=10, InterpolantAutomatonStates: 49, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 949 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 321 NumberOfCodeBlocks, 321 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 260 ConstructedInterpolants, 0 QuantifiedInterpolants, 502 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 22:56:50,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5494281-af25-49a4-8781-1f4fcb9d705f/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...