./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product53.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_cbb41535-6990-49e1-906d-0cafff513f9a/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_cbb41535-6990-49e1-906d-0cafff513f9a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cbb41535-6990-49e1-906d-0cafff513f9a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cbb41535-6990-49e1-906d-0cafff513f9a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product53.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_cbb41535-6990-49e1-906d-0cafff513f9a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cbb41535-6990-49e1-906d-0cafff513f9a/bin/uautomizer --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 8e12a99510f3863baa75b24484dbcccd367dbf9c ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 0.2.0-a4ecdab [2020-11-28 03:00:06,074 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:00:06,078 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:00:06,153 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:00:06,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:00:06,160 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:00:06,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:00:06,167 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:00:06,170 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:00:06,181 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:00:06,182 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:00:06,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:00:06,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:00:06,192 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:00:06,193 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:00:06,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:00:06,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:00:06,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:00:06,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:00:06,213 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:00:06,215 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:00:06,217 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:00:06,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:00:06,221 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:00:06,231 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:00:06,232 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:00:06,232 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:00:06,234 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:00:06,235 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:00:06,236 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:00:06,237 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:00:06,238 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:00:06,241 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:00:06,242 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:00:06,244 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:00:06,244 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:00:06,245 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:00:06,246 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:00:06,246 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:00:06,247 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:00:06,249 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:00:06,252 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cbb41535-6990-49e1-906d-0cafff513f9a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:00:06,294 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:00:06,294 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:00:06,297 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:00:06,297 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:00:06,297 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:00:06,297 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:00:06,298 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:00:06,298 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:00:06,298 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:00:06,298 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:00:06,299 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:00:06,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:00:06,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:00:06,300 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:00:06,300 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:00:06,301 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:00:06,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:00:06,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:00:06,301 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:00:06,301 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:00:06,302 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:00:06,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:00:06,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:00:06,302 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:00:06,303 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:00:06,303 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:00:06,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:00:06,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:00:06,303 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:00:06,304 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-vcloud-master/worker/run_dir_cbb41535-6990-49e1-906d-0cafff513f9a/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_cbb41535-6990-49e1-906d-0cafff513f9a/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e12a99510f3863baa75b24484dbcccd367dbf9c [2020-11-28 03:00:06,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:00:06,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:00:06,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:00:06,653 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:00:06,653 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:00:06,654 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cbb41535-6990-49e1-906d-0cafff513f9a/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec1_product53.cil.c [2020-11-28 03:00:06,737 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cbb41535-6990-49e1-906d-0cafff513f9a/bin/uautomizer/data/e6f559f9d/b66acebd0331421b83b790d3173c1f19/FLAGafaeec4ad [2020-11-28 03:00:07,371 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:00:07,375 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cbb41535-6990-49e1-906d-0cafff513f9a/sv-benchmarks/c/product-lines/minepump_spec1_product53.cil.c [2020-11-28 03:00:07,395 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cbb41535-6990-49e1-906d-0cafff513f9a/bin/uautomizer/data/e6f559f9d/b66acebd0331421b83b790d3173c1f19/FLAGafaeec4ad [2020-11-28 03:00:07,602 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cbb41535-6990-49e1-906d-0cafff513f9a/bin/uautomizer/data/e6f559f9d/b66acebd0331421b83b790d3173c1f19 [2020-11-28 03:00:07,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:00:07,608 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:00:07,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:00:07,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:00:07,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:00:07,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:00:07" (1/1) ... [2020-11-28 03:00:07,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a3ca32f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:07, skipping insertion in model container [2020-11-28 03:00:07,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:00:07" (1/1) ... [2020-11-28 03:00:07,630 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:00:07,698 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:00:08,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:00:08,179 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:00:08,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:00:08,344 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:00:08,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:08 WrapperNode [2020-11-28 03:00:08,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:00:08,347 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:00:08,347 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:00:08,347 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:00:08,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:08" (1/1) ... [2020-11-28 03:00:08,386 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:08" (1/1) ... [2020-11-28 03:00:08,472 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:00:08,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:00:08,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:00:08,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:00:08,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:08" (1/1) ... [2020-11-28 03:00:08,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:08" (1/1) ... [2020-11-28 03:00:08,506 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:08" (1/1) ... [2020-11-28 03:00:08,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:08" (1/1) ... [2020-11-28 03:00:08,540 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:08" (1/1) ... [2020-11-28 03:00:08,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:08" (1/1) ... [2020-11-28 03:00:08,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:08" (1/1) ... [2020-11-28 03:00:08,570 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:00:08,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:00:08,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:00:08,571 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:00:08,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cbb41535-6990-49e1-906d-0cafff513f9a/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:00:08,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:00:08,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:00:08,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:00:08,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:00:09,913 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:00:09,914 INFO L298 CfgBuilder]: Removed 282 assume(true) statements. [2020-11-28 03:00:09,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:00:09 BoogieIcfgContainer [2020-11-28 03:00:09,916 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:00:09,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:00:09,918 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:00:09,921 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:00:09,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:00:07" (1/3) ... [2020-11-28 03:00:09,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b3102 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:00:09, skipping insertion in model container [2020-11-28 03:00:09,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:08" (2/3) ... [2020-11-28 03:00:09,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b3102 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:00:09, skipping insertion in model container [2020-11-28 03:00:09,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:00:09" (3/3) ... [2020-11-28 03:00:09,925 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product53.cil.c [2020-11-28 03:00:09,936 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:00:09,941 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-28 03:00:09,953 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-28 03:00:09,978 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:00:09,978 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:00:09,979 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:00:09,979 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:00:09,979 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:00:09,979 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:00:09,979 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:00:09,979 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:00:10,005 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states. [2020-11-28 03:00:10,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 03:00:10,011 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:10,012 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:10,013 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:10,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:10,019 INFO L82 PathProgramCache]: Analyzing trace with hash -587287140, now seen corresponding path program 1 times [2020-11-28 03:00:10,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:10,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237611392] [2020-11-28 03:00:10,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:10,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:10,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:10,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237611392] [2020-11-28 03:00:10,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:10,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:00:10,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350406941] [2020-11-28 03:00:10,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:00:10,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:10,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:00:10,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:00:10,367 INFO L87 Difference]: Start difference. First operand 192 states. Second operand 2 states. [2020-11-28 03:00:10,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:10,433 INFO L93 Difference]: Finished difference Result 375 states and 572 transitions. [2020-11-28 03:00:10,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:00:10,435 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-11-28 03:00:10,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:10,454 INFO L225 Difference]: With dead ends: 375 [2020-11-28 03:00:10,454 INFO L226 Difference]: Without dead ends: 185 [2020-11-28 03:00:10,459 INFO L677 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 [2020-11-28 03:00:10,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-11-28 03:00:10,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2020-11-28 03:00:10,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-11-28 03:00:10,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 276 transitions. [2020-11-28 03:00:10,553 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 276 transitions. Word has length 16 [2020-11-28 03:00:10,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:10,553 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 276 transitions. [2020-11-28 03:00:10,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:00:10,554 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 276 transitions. [2020-11-28 03:00:10,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 03:00:10,556 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:10,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:10,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:00:10,557 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:10,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:10,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1634044037, now seen corresponding path program 1 times [2020-11-28 03:00:10,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:10,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616792173] [2020-11-28 03:00:10,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:10,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:10,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616792173] [2020-11-28 03:00:10,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:10,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:00:10,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682174353] [2020-11-28 03:00:10,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:00:10,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:10,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:00:10,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:00:10,723 INFO L87 Difference]: Start difference. First operand 185 states and 276 transitions. Second operand 3 states. [2020-11-28 03:00:10,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:10,741 INFO L93 Difference]: Finished difference Result 185 states and 276 transitions. [2020-11-28 03:00:10,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:00:10,747 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-28 03:00:10,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:10,748 INFO L225 Difference]: With dead ends: 185 [2020-11-28 03:00:10,748 INFO L226 Difference]: Without dead ends: 71 [2020-11-28 03:00:10,750 INFO L677 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 [2020-11-28 03:00:10,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-11-28 03:00:10,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-11-28 03:00:10,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-11-28 03:00:10,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 105 transitions. [2020-11-28 03:00:10,758 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 105 transitions. Word has length 17 [2020-11-28 03:00:10,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:10,758 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 105 transitions. [2020-11-28 03:00:10,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:00:10,759 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 105 transitions. [2020-11-28 03:00:10,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 03:00:10,761 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:10,762 INFO L422 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] [2020-11-28 03:00:10,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:00:10,762 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:10,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:10,763 INFO L82 PathProgramCache]: Analyzing trace with hash 748559286, now seen corresponding path program 1 times [2020-11-28 03:00:10,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:10,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622743700] [2020-11-28 03:00:10,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:10,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:10,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622743700] [2020-11-28 03:00:10,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:10,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:00:10,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665018651] [2020-11-28 03:00:10,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:00:10,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:10,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:00:10,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:00:10,913 INFO L87 Difference]: Start difference. First operand 71 states and 105 transitions. Second operand 6 states. [2020-11-28 03:00:11,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:11,144 INFO L93 Difference]: Finished difference Result 136 states and 204 transitions. [2020-11-28 03:00:11,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:00:11,145 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-11-28 03:00:11,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:11,146 INFO L225 Difference]: With dead ends: 136 [2020-11-28 03:00:11,146 INFO L226 Difference]: Without dead ends: 71 [2020-11-28 03:00:11,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:00:11,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-11-28 03:00:11,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-11-28 03:00:11,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-11-28 03:00:11,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 104 transitions. [2020-11-28 03:00:11,154 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 104 transitions. Word has length 22 [2020-11-28 03:00:11,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:11,155 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 104 transitions. [2020-11-28 03:00:11,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:00:11,155 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 104 transitions. [2020-11-28 03:00:11,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-28 03:00:11,156 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:11,157 INFO L422 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] [2020-11-28 03:00:11,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:00:11,157 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:11,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:11,158 INFO L82 PathProgramCache]: Analyzing trace with hash -682519882, now seen corresponding path program 1 times [2020-11-28 03:00:11,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:11,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813567072] [2020-11-28 03:00:11,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:11,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:11,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:11,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813567072] [2020-11-28 03:00:11,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:11,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:00:11,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044984287] [2020-11-28 03:00:11,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:00:11,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:11,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:00:11,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:00:11,212 INFO L87 Difference]: Start difference. First operand 71 states and 104 transitions. Second operand 3 states. [2020-11-28 03:00:11,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:11,255 INFO L93 Difference]: Finished difference Result 145 states and 214 transitions. [2020-11-28 03:00:11,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:00:11,255 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-11-28 03:00:11,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:11,256 INFO L225 Difference]: With dead ends: 145 [2020-11-28 03:00:11,256 INFO L226 Difference]: Without dead ends: 80 [2020-11-28 03:00:11,257 INFO L677 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 [2020-11-28 03:00:11,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-11-28 03:00:11,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2020-11-28 03:00:11,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-11-28 03:00:11,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 110 transitions. [2020-11-28 03:00:11,265 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 110 transitions. Word has length 25 [2020-11-28 03:00:11,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:11,265 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 110 transitions. [2020-11-28 03:00:11,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:00:11,265 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 110 transitions. [2020-11-28 03:00:11,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-28 03:00:11,266 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:11,266 INFO L422 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] [2020-11-28 03:00:11,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:00:11,267 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:11,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:11,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1459548505, now seen corresponding path program 1 times [2020-11-28 03:00:11,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:11,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969649166] [2020-11-28 03:00:11,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:11,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:11,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:11,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969649166] [2020-11-28 03:00:11,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:11,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:00:11,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953905740] [2020-11-28 03:00:11,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:00:11,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:11,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:00:11,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:00:11,333 INFO L87 Difference]: Start difference. First operand 78 states and 110 transitions. Second operand 5 states. [2020-11-28 03:00:11,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:11,462 INFO L93 Difference]: Finished difference Result 204 states and 285 transitions. [2020-11-28 03:00:11,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:00:11,463 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-11-28 03:00:11,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:11,464 INFO L225 Difference]: With dead ends: 204 [2020-11-28 03:00:11,464 INFO L226 Difference]: Without dead ends: 132 [2020-11-28 03:00:11,465 INFO L677 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 [2020-11-28 03:00:11,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-11-28 03:00:11,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 87. [2020-11-28 03:00:11,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-11-28 03:00:11,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 119 transitions. [2020-11-28 03:00:11,480 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 119 transitions. Word has length 31 [2020-11-28 03:00:11,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:11,481 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 119 transitions. [2020-11-28 03:00:11,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:00:11,481 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 119 transitions. [2020-11-28 03:00:11,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-28 03:00:11,482 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:11,482 INFO L422 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] [2020-11-28 03:00:11,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:00:11,483 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:11,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:11,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1202962538, now seen corresponding path program 1 times [2020-11-28 03:00:11,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:11,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842320635] [2020-11-28 03:00:11,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:11,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:11,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842320635] [2020-11-28 03:00:11,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:11,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:00:11,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821906140] [2020-11-28 03:00:11,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:00:11,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:11,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:00:11,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:00:11,596 INFO L87 Difference]: Start difference. First operand 87 states and 119 transitions. Second operand 5 states. [2020-11-28 03:00:11,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:11,723 INFO L93 Difference]: Finished difference Result 431 states and 600 transitions. [2020-11-28 03:00:11,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:00:11,723 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-11-28 03:00:11,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:11,726 INFO L225 Difference]: With dead ends: 431 [2020-11-28 03:00:11,726 INFO L226 Difference]: Without dead ends: 350 [2020-11-28 03:00:11,727 INFO L677 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 [2020-11-28 03:00:11,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2020-11-28 03:00:11,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 162. [2020-11-28 03:00:11,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-11-28 03:00:11,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 221 transitions. [2020-11-28 03:00:11,743 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 221 transitions. Word has length 31 [2020-11-28 03:00:11,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:11,743 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 221 transitions. [2020-11-28 03:00:11,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:00:11,744 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 221 transitions. [2020-11-28 03:00:11,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-28 03:00:11,749 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:11,750 INFO L422 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] [2020-11-28 03:00:11,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 03:00:11,750 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:11,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:11,750 INFO L82 PathProgramCache]: Analyzing trace with hash 552949620, now seen corresponding path program 1 times [2020-11-28 03:00:11,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:11,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510707634] [2020-11-28 03:00:11,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:11,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:11,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:11,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510707634] [2020-11-28 03:00:11,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:11,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:00:11,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721101318] [2020-11-28 03:00:11,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:00:11,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:11,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:00:11,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:00:11,823 INFO L87 Difference]: Start difference. First operand 162 states and 221 transitions. Second operand 5 states. [2020-11-28 03:00:12,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:12,023 INFO L93 Difference]: Finished difference Result 470 states and 642 transitions. [2020-11-28 03:00:12,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:00:12,024 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-11-28 03:00:12,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:12,027 INFO L225 Difference]: With dead ends: 470 [2020-11-28 03:00:12,027 INFO L226 Difference]: Without dead ends: 468 [2020-11-28 03:00:12,028 INFO L677 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 [2020-11-28 03:00:12,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2020-11-28 03:00:12,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 162. [2020-11-28 03:00:12,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-11-28 03:00:12,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 220 transitions. [2020-11-28 03:00:12,048 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 220 transitions. Word has length 32 [2020-11-28 03:00:12,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:12,049 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 220 transitions. [2020-11-28 03:00:12,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:00:12,049 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 220 transitions. [2020-11-28 03:00:12,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-28 03:00:12,053 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:12,053 INFO L422 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] [2020-11-28 03:00:12,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 03:00:12,053 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:12,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:12,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1792378863, now seen corresponding path program 1 times [2020-11-28 03:00:12,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:12,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028729609] [2020-11-28 03:00:12,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:12,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:12,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:12,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028729609] [2020-11-28 03:00:12,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:12,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:00:12,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615725061] [2020-11-28 03:00:12,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:00:12,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:12,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:00:12,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:00:12,126 INFO L87 Difference]: Start difference. First operand 162 states and 220 transitions. Second operand 4 states. [2020-11-28 03:00:12,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:12,203 INFO L93 Difference]: Finished difference Result 388 states and 522 transitions. [2020-11-28 03:00:12,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:00:12,203 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-11-28 03:00:12,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:12,205 INFO L225 Difference]: With dead ends: 388 [2020-11-28 03:00:12,205 INFO L226 Difference]: Without dead ends: 232 [2020-11-28 03:00:12,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:00:12,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-11-28 03:00:12,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 174. [2020-11-28 03:00:12,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-11-28 03:00:12,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 232 transitions. [2020-11-28 03:00:12,226 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 232 transitions. Word has length 32 [2020-11-28 03:00:12,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:12,226 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 232 transitions. [2020-11-28 03:00:12,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:00:12,226 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 232 transitions. [2020-11-28 03:00:12,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-28 03:00:12,232 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:12,232 INFO L422 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] [2020-11-28 03:00:12,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 03:00:12,233 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:12,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:12,234 INFO L82 PathProgramCache]: Analyzing trace with hash 2050544301, now seen corresponding path program 1 times [2020-11-28 03:00:12,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:12,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311474397] [2020-11-28 03:00:12,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:12,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:12,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:12,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311474397] [2020-11-28 03:00:12,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:12,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:00:12,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166143496] [2020-11-28 03:00:12,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:00:12,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:12,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:00:12,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:00:12,300 INFO L87 Difference]: Start difference. First operand 174 states and 232 transitions. Second operand 3 states. [2020-11-28 03:00:12,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:12,342 INFO L93 Difference]: Finished difference Result 394 states and 524 transitions. [2020-11-28 03:00:12,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:00:12,343 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-11-28 03:00:12,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:12,344 INFO L225 Difference]: With dead ends: 394 [2020-11-28 03:00:12,345 INFO L226 Difference]: Without dead ends: 226 [2020-11-28 03:00:12,345 INFO L677 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 [2020-11-28 03:00:12,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-11-28 03:00:12,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-11-28 03:00:12,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-11-28 03:00:12,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 294 transitions. [2020-11-28 03:00:12,367 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 294 transitions. Word has length 32 [2020-11-28 03:00:12,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:12,368 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 294 transitions. [2020-11-28 03:00:12,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:00:12,368 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 294 transitions. [2020-11-28 03:00:12,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-28 03:00:12,369 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:12,370 INFO L422 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] [2020-11-28 03:00:12,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 03:00:12,370 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:12,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:12,371 INFO L82 PathProgramCache]: Analyzing trace with hash 979497771, now seen corresponding path program 1 times [2020-11-28 03:00:12,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:12,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517180466] [2020-11-28 03:00:12,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:12,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:00:12,456 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:00:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:00:12,521 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:00:12,588 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:00:12,588 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:00:12,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 03:00:12,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:00:12 BoogieIcfgContainer [2020-11-28 03:00:12,773 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:00:12,773 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:00:12,774 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:00:12,774 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:00:12,774 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:00:09" (3/4) ... [2020-11-28 03:00:12,776 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:00:12,857 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_cbb41535-6990-49e1-906d-0cafff513f9a/bin/uautomizer/witness.graphml [2020-11-28 03:00:12,857 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:00:12,859 INFO L168 Benchmark]: Toolchain (without parser) took 5250.68 ms. Allocated memory was 92.3 MB in the beginning and 169.9 MB in the end (delta: 77.6 MB). Free memory was 64.8 MB in the beginning and 121.9 MB in the end (delta: -57.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:12,859 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 92.3 MB. Free memory was 50.2 MB in the beginning and 50.1 MB in the end (delta: 53.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:00:12,860 INFO L168 Benchmark]: CACSL2BoogieTranslator took 734.67 ms. Allocated memory is still 92.3 MB. Free memory was 64.7 MB in the beginning and 56.8 MB in the end (delta: 7.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:12,860 INFO L168 Benchmark]: Boogie Procedure Inliner took 126.29 ms. Allocated memory is still 92.3 MB. Free memory was 56.8 MB in the beginning and 51.8 MB in the end (delta: 5.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:12,861 INFO L168 Benchmark]: Boogie Preprocessor took 95.87 ms. Allocated memory is still 92.3 MB. Free memory was 51.8 MB in the beginning and 48.2 MB in the end (delta: 3.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:12,861 INFO L168 Benchmark]: RCFGBuilder took 1344.85 ms. Allocated memory was 92.3 MB in the beginning and 127.9 MB in the end (delta: 35.7 MB). Free memory was 48.2 MB in the beginning and 64.6 MB in the end (delta: -16.4 MB). Peak memory consumption was 25.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:12,862 INFO L168 Benchmark]: TraceAbstraction took 2855.52 ms. Allocated memory was 127.9 MB in the beginning and 169.9 MB in the end (delta: 41.9 MB). Free memory was 64.6 MB in the beginning and 134.4 MB in the end (delta: -69.9 MB). Peak memory consumption was 57.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:12,862 INFO L168 Benchmark]: Witness Printer took 83.81 ms. Allocated memory is still 169.9 MB. Free memory was 134.4 MB in the beginning and 121.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:12,864 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 92.3 MB. Free memory was 50.2 MB in the beginning and 50.1 MB in the end (delta: 53.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 734.67 ms. Allocated memory is still 92.3 MB. Free memory was 64.7 MB in the beginning and 56.8 MB in the end (delta: 7.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 126.29 ms. Allocated memory is still 92.3 MB. Free memory was 56.8 MB in the beginning and 51.8 MB in the end (delta: 5.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 95.87 ms. Allocated memory is still 92.3 MB. Free memory was 51.8 MB in the beginning and 48.2 MB in the end (delta: 3.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1344.85 ms. Allocated memory was 92.3 MB in the beginning and 127.9 MB in the end (delta: 35.7 MB). Free memory was 48.2 MB in the beginning and 64.6 MB in the end (delta: -16.4 MB). Peak memory consumption was 25.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2855.52 ms. Allocated memory was 127.9 MB in the beginning and 169.9 MB in the end (delta: 41.9 MB). Free memory was 64.6 MB in the beginning and 134.4 MB in the end (delta: -69.9 MB). Peak memory consumption was 57.2 MB. Max. memory is 16.1 GB. * Witness Printer took 83.81 ms. Allocated memory is still 169.9 MB. Free memory was 134.4 MB in the beginning and 121.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L249] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L446] int cleanupTimeShifts = 4; [L556] int pumpRunning = 0; [L557] int systemActive = 1; [L880] int waterLevel = 1; [L881] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L527] int retValue_acc ; [L528] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L870] int retValue_acc ; [L873] retValue_acc = 1 [L874] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L534] tmp = valid_product() [L536] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L780] int splverifierCounter ; [L781] int tmp ; [L782] int tmp___0 ; [L783] int tmp___1 ; [L784] int tmp___2 ; [L787] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L789] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L791] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L797] tmp = __VERIFIER_nondet_int() [L799] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L898] COND TRUE waterLevel < 2 [L899] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L807] tmp___0 = __VERIFIER_nondet_int() [L809] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L910] COND FALSE !(\read(methaneLevelCritical)) [L913] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L817] tmp___2 = __VERIFIER_nondet_int() [L819] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L563] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L570] COND TRUE \read(systemActive) [L644] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L647] COND FALSE !(\read(pumpRunning)) [L618] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L621] COND FALSE !(\read(pumpRunning)) [L592] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L595] COND TRUE ! pumpRunning [L741] int retValue_acc ; [L742] int tmp ; [L743] int tmp___0 ; [L960] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L963] COND FALSE !(waterLevel < 2) [L967] retValue_acc = 0 [L968] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L747] tmp = isHighWaterSensorDry() [L749] COND FALSE !(\read(tmp)) [L752] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L754] retValue_acc = tmp___0 [L755] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L597] tmp = isHighWaterLevel() [L599] COND TRUE \read(tmp) [L672] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L46] int tmp ; [L47] int tmp___0 ; [L919] int retValue_acc ; [L922] retValue_acc = methaneLevelCritical [L923] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L51] tmp = isMethaneLevelCritical() [L53] COND TRUE \read(tmp) [L696] int retValue_acc ; [L699] retValue_acc = pumpRunning [L700] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L55] tmp___0 = isPumpRunning() [L57] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L3] __assert_fail("0", "minepump_spec1_product53.cil.c", 3, "reach_error") VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 192 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.6s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1137 SDtfs, 1315 SDslu, 1237 SDs, 0 SdLazy, 199 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 599 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 271 NumberOfCodeBlocks, 271 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 229 ConstructedInterpolants, 0 QuantifiedInterpolants, 12994 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...