./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product37.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_419a695f-e263-4795-9402-a2dcc2b222f3/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_419a695f-e263-4795-9402-a2dcc2b222f3/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_419a695f-e263-4795-9402-a2dcc2b222f3/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_419a695f-e263-4795-9402-a2dcc2b222f3/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product37.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_419a695f-e263-4795-9402-a2dcc2b222f3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_419a695f-e263-4795-9402-a2dcc2b222f3/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 e155c6ff67a88d7a4e2430bd4435eb1c3cafcd71 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 03:14:38,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:14:38,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:14:38,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:14:38,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:14:38,718 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:14:38,720 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:14:38,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:14:38,741 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:14:38,742 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:14:38,744 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:14:38,746 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:14:38,746 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:14:38,748 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:14:38,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:14:38,759 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:14:38,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:14:38,763 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:14:38,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:14:38,769 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:14:38,772 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:14:38,774 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:14:38,775 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:14:38,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:14:38,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:14:38,782 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:14:38,782 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:14:38,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:14:38,785 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:14:38,786 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:14:38,787 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:14:38,788 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:14:38,790 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:14:38,791 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:14:38,792 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:14:38,793 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:14:38,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:14:38,794 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:14:38,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:14:38,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:14:38,797 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:14:38,798 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_419a695f-e263-4795-9402-a2dcc2b222f3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:14:38,829 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:14:38,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:14:38,831 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:14:38,832 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:14:38,832 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:14:38,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:14:38,833 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:14:38,833 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:14:38,833 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:14:38,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:14:38,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:14:38,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:14:38,834 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:14:38,834 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:14:38,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:14:38,835 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:14:38,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:14:38,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:14:38,836 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:14:38,836 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:14:38,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:14:38,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:14:38,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:14:38,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:14:38,838 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:14:38,838 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:14:38,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:14:38,839 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:14:38,839 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:14:38,839 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_419a695f-e263-4795-9402-a2dcc2b222f3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_419a695f-e263-4795-9402-a2dcc2b222f3/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e155c6ff67a88d7a4e2430bd4435eb1c3cafcd71 [2020-11-28 03:14:39,191 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:14:39,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:14:39,232 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:14:39,234 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:14:39,240 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:14:39,242 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_419a695f-e263-4795-9402-a2dcc2b222f3/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec4_product37.cil.c [2020-11-28 03:14:39,330 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_419a695f-e263-4795-9402-a2dcc2b222f3/bin/uautomizer/data/803b0613c/e9085b630d0c45bd9c9e241384d4195e/FLAGbf4713d0e [2020-11-28 03:14:40,130 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:14:40,131 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_419a695f-e263-4795-9402-a2dcc2b222f3/sv-benchmarks/c/product-lines/minepump_spec4_product37.cil.c [2020-11-28 03:14:40,152 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_419a695f-e263-4795-9402-a2dcc2b222f3/bin/uautomizer/data/803b0613c/e9085b630d0c45bd9c9e241384d4195e/FLAGbf4713d0e [2020-11-28 03:14:40,388 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_419a695f-e263-4795-9402-a2dcc2b222f3/bin/uautomizer/data/803b0613c/e9085b630d0c45bd9c9e241384d4195e [2020-11-28 03:14:40,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:14:40,393 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:14:40,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:14:40,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:14:40,411 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:14:40,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:14:40" (1/1) ... [2020-11-28 03:14:40,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fd75c5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:40, skipping insertion in model container [2020-11-28 03:14:40,415 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:14:40" (1/1) ... [2020-11-28 03:14:40,425 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:14:40,501 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:14:40,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:14:40,921 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:14:41,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:14:41,067 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:14:41,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:41 WrapperNode [2020-11-28 03:14:41,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:14:41,070 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:14:41,070 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:14:41,070 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:14:41,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:41" (1/1) ... [2020-11-28 03:14:41,100 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:41" (1/1) ... [2020-11-28 03:14:41,162 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:14:41,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:14:41,165 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:14:41,166 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:14:41,177 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:41" (1/1) ... [2020-11-28 03:14:41,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:41" (1/1) ... [2020-11-28 03:14:41,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:41" (1/1) ... [2020-11-28 03:14:41,203 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:41" (1/1) ... [2020-11-28 03:14:41,230 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:41" (1/1) ... [2020-11-28 03:14:41,240 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:41" (1/1) ... [2020-11-28 03:14:41,243 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:41" (1/1) ... [2020-11-28 03:14:41,249 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:14:41,250 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:14:41,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:14:41,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:14:41,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_419a695f-e263-4795-9402-a2dcc2b222f3/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 03:14:41,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:14:41,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:14:41,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:14:41,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:14:42,753 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:14:42,753 INFO L298 CfgBuilder]: Removed 162 assume(true) statements. [2020-11-28 03:14:42,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:14:42 BoogieIcfgContainer [2020-11-28 03:14:42,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:14:42,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:14:42,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:14:42,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:14:42,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:14:40" (1/3) ... [2020-11-28 03:14:42,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ecb0a5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:14:42, skipping insertion in model container [2020-11-28 03:14:42,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:41" (2/3) ... [2020-11-28 03:14:42,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ecb0a5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:14:42, skipping insertion in model container [2020-11-28 03:14:42,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:14:42" (3/3) ... [2020-11-28 03:14:42,766 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product37.cil.c [2020-11-28 03:14:42,787 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:14:42,793 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-28 03:14:42,805 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-28 03:14:42,831 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:14:42,831 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:14:42,832 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:14:42,832 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:14:42,832 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:14:42,832 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:14:42,832 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:14:42,832 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:14:42,853 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states. [2020-11-28 03:14:42,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 03:14:42,860 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:42,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:42,861 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:42,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:42,869 INFO L82 PathProgramCache]: Analyzing trace with hash -450260872, now seen corresponding path program 1 times [2020-11-28 03:14:42,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:42,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728012405] [2020-11-28 03:14:42,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:43,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:43,238 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 03:14:43,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728012405] [2020-11-28 03:14:43,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:43,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:14:43,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500924765] [2020-11-28 03:14:43,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:14:43,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:43,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:14:43,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:14:43,268 INFO L87 Difference]: Start difference. First operand 114 states. Second operand 2 states. [2020-11-28 03:14:43,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:43,319 INFO L93 Difference]: Finished difference Result 219 states and 332 transitions. [2020-11-28 03:14:43,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:14:43,321 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-11-28 03:14:43,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:43,339 INFO L225 Difference]: With dead ends: 219 [2020-11-28 03:14:43,339 INFO L226 Difference]: Without dead ends: 107 [2020-11-28 03:14:43,344 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 03:14:43,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-11-28 03:14:43,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-11-28 03:14:43,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-11-28 03:14:43,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 156 transitions. [2020-11-28 03:14:43,449 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 156 transitions. Word has length 16 [2020-11-28 03:14:43,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:43,450 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 156 transitions. [2020-11-28 03:14:43,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:14:43,452 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 156 transitions. [2020-11-28 03:14:43,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 03:14:43,454 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:43,455 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 03:14:43,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:14:43,456 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:43,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:43,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1497017769, now seen corresponding path program 1 times [2020-11-28 03:14:43,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:43,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651938642] [2020-11-28 03:14:43,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:43,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:43,630 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 03:14:43,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651938642] [2020-11-28 03:14:43,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:43,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:43,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860798423] [2020-11-28 03:14:43,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:43,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:43,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:43,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:43,635 INFO L87 Difference]: Start difference. First operand 107 states and 156 transitions. Second operand 3 states. [2020-11-28 03:14:43,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:43,653 INFO L93 Difference]: Finished difference Result 107 states and 156 transitions. [2020-11-28 03:14:43,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:43,661 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-28 03:14:43,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:43,662 INFO L225 Difference]: With dead ends: 107 [2020-11-28 03:14:43,662 INFO L226 Difference]: Without dead ends: 45 [2020-11-28 03:14:43,664 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 03:14:43,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-28 03:14:43,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-11-28 03:14:43,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-28 03:14:43,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 65 transitions. [2020-11-28 03:14:43,681 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 65 transitions. Word has length 17 [2020-11-28 03:14:43,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:43,682 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 65 transitions. [2020-11-28 03:14:43,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:43,682 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 65 transitions. [2020-11-28 03:14:43,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 03:14:43,685 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:43,686 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 03:14:43,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:14:43,687 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:43,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:43,690 INFO L82 PathProgramCache]: Analyzing trace with hash -720159228, now seen corresponding path program 1 times [2020-11-28 03:14:43,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:43,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317667950] [2020-11-28 03:14:43,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:43,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:43,923 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 03:14:43,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317667950] [2020-11-28 03:14:43,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:43,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:14:43,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577835247] [2020-11-28 03:14:43,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:14:43,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:43,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:14:43,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:14:43,927 INFO L87 Difference]: Start difference. First operand 45 states and 65 transitions. Second operand 6 states. [2020-11-28 03:14:44,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:44,162 INFO L93 Difference]: Finished difference Result 84 states and 124 transitions. [2020-11-28 03:14:44,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:14:44,165 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-11-28 03:14:44,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:44,166 INFO L225 Difference]: With dead ends: 84 [2020-11-28 03:14:44,167 INFO L226 Difference]: Without dead ends: 45 [2020-11-28 03:14:44,168 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 03:14:44,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-28 03:14:44,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-11-28 03:14:44,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-28 03:14:44,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 64 transitions. [2020-11-28 03:14:44,183 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 64 transitions. Word has length 22 [2020-11-28 03:14:44,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:44,184 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 64 transitions. [2020-11-28 03:14:44,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:14:44,185 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 64 transitions. [2020-11-28 03:14:44,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 03:14:44,187 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:44,188 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] [2020-11-28 03:14:44,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:14:44,189 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:44,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:44,190 INFO L82 PathProgramCache]: Analyzing trace with hash 2091202829, now seen corresponding path program 1 times [2020-11-28 03:14:44,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:44,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640045215] [2020-11-28 03:14:44,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:44,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:44,299 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 03:14:44,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640045215] [2020-11-28 03:14:44,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:44,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:14:44,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091754256] [2020-11-28 03:14:44,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:44,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:44,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:44,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:44,302 INFO L87 Difference]: Start difference. First operand 45 states and 64 transitions. Second operand 3 states. [2020-11-28 03:14:44,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:44,355 INFO L93 Difference]: Finished difference Result 105 states and 152 transitions. [2020-11-28 03:14:44,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:44,356 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-28 03:14:44,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:44,357 INFO L225 Difference]: With dead ends: 105 [2020-11-28 03:14:44,357 INFO L226 Difference]: Without dead ends: 66 [2020-11-28 03:14:44,358 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 03:14:44,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-28 03:14:44,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-11-28 03:14:44,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-11-28 03:14:44,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 90 transitions. [2020-11-28 03:14:44,371 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 90 transitions. Word has length 24 [2020-11-28 03:14:44,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:44,371 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 90 transitions. [2020-11-28 03:14:44,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:44,374 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 90 transitions. [2020-11-28 03:14:44,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 03:14:44,376 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:44,376 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] [2020-11-28 03:14:44,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:14:44,377 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:44,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:44,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1013899842, now seen corresponding path program 1 times [2020-11-28 03:14:44,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:44,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563338917] [2020-11-28 03:14:44,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:44,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:44,516 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 03:14:44,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563338917] [2020-11-28 03:14:44,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:44,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:14:44,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66835826] [2020-11-28 03:14:44,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:14:44,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:44,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:14:44,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:14:44,519 INFO L87 Difference]: Start difference. First operand 64 states and 90 transitions. Second operand 5 states. [2020-11-28 03:14:44,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:44,644 INFO L93 Difference]: Finished difference Result 171 states and 239 transitions. [2020-11-28 03:14:44,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:14:44,645 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-11-28 03:14:44,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:44,646 INFO L225 Difference]: With dead ends: 171 [2020-11-28 03:14:44,647 INFO L226 Difference]: Without dead ends: 113 [2020-11-28 03:14:44,647 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 03:14:44,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-11-28 03:14:44,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 70. [2020-11-28 03:14:44,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-11-28 03:14:44,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 96 transitions. [2020-11-28 03:14:44,659 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 96 transitions. Word has length 30 [2020-11-28 03:14:44,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:44,660 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 96 transitions. [2020-11-28 03:14:44,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:14:44,660 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 96 transitions. [2020-11-28 03:14:44,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 03:14:44,662 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:44,662 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] [2020-11-28 03:14:44,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:14:44,662 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:44,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:44,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1648611201, now seen corresponding path program 1 times [2020-11-28 03:14:44,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:44,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012878193] [2020-11-28 03:14:44,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:44,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:44,747 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 03:14:44,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012878193] [2020-11-28 03:14:44,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:44,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:14:44,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414268441] [2020-11-28 03:14:44,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:14:44,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:44,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:14:44,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:14:44,750 INFO L87 Difference]: Start difference. First operand 70 states and 96 transitions. Second operand 5 states. [2020-11-28 03:14:44,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:44,907 INFO L93 Difference]: Finished difference Result 247 states and 346 transitions. [2020-11-28 03:14:44,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:14:44,908 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-11-28 03:14:44,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:44,910 INFO L225 Difference]: With dead ends: 247 [2020-11-28 03:14:44,910 INFO L226 Difference]: Without dead ends: 183 [2020-11-28 03:14:44,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:14:44,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-11-28 03:14:44,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 113. [2020-11-28 03:14:44,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-11-28 03:14:44,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 152 transitions. [2020-11-28 03:14:44,933 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 152 transitions. Word has length 30 [2020-11-28 03:14:44,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:44,934 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 152 transitions. [2020-11-28 03:14:44,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:14:44,934 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 152 transitions. [2020-11-28 03:14:44,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-28 03:14:44,936 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:44,936 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 03:14:44,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 03:14:44,936 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:44,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:44,937 INFO L82 PathProgramCache]: Analyzing trace with hash -359204993, now seen corresponding path program 1 times [2020-11-28 03:14:44,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:44,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105050718] [2020-11-28 03:14:44,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:44,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:45,029 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 03:14:45,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105050718] [2020-11-28 03:14:45,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:45,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:14:45,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117732863] [2020-11-28 03:14:45,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:14:45,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:45,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:14:45,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:14:45,032 INFO L87 Difference]: Start difference. First operand 113 states and 152 transitions. Second operand 4 states. [2020-11-28 03:14:45,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:45,161 INFO L93 Difference]: Finished difference Result 234 states and 321 transitions. [2020-11-28 03:14:45,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:14:45,162 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-11-28 03:14:45,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:45,164 INFO L225 Difference]: With dead ends: 234 [2020-11-28 03:14:45,164 INFO L226 Difference]: Without dead ends: 170 [2020-11-28 03:14:45,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:14:45,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-11-28 03:14:45,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 167. [2020-11-28 03:14:45,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-11-28 03:14:45,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 225 transitions. [2020-11-28 03:14:45,205 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 225 transitions. Word has length 31 [2020-11-28 03:14:45,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:45,206 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 225 transitions. [2020-11-28 03:14:45,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:14:45,206 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 225 transitions. [2020-11-28 03:14:45,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-28 03:14:45,213 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:45,213 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 03:14:45,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 03:14:45,214 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:45,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:45,214 INFO L82 PathProgramCache]: Analyzing trace with hash -101039555, now seen corresponding path program 1 times [2020-11-28 03:14:45,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:45,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561308110] [2020-11-28 03:14:45,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:45,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:45,325 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 03:14:45,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561308110] [2020-11-28 03:14:45,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:45,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:14:45,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717149412] [2020-11-28 03:14:45,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:14:45,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:45,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:14:45,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:14:45,328 INFO L87 Difference]: Start difference. First operand 167 states and 225 transitions. Second operand 4 states. [2020-11-28 03:14:45,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:45,420 INFO L93 Difference]: Finished difference Result 394 states and 542 transitions. [2020-11-28 03:14:45,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:14:45,421 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-11-28 03:14:45,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:45,423 INFO L225 Difference]: With dead ends: 394 [2020-11-28 03:14:45,424 INFO L226 Difference]: Without dead ends: 275 [2020-11-28 03:14:45,425 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 03:14:45,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-11-28 03:14:45,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 161. [2020-11-28 03:14:45,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-11-28 03:14:45,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 217 transitions. [2020-11-28 03:14:45,464 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 217 transitions. Word has length 31 [2020-11-28 03:14:45,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:45,465 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 217 transitions. [2020-11-28 03:14:45,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:14:45,465 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 217 transitions. [2020-11-28 03:14:45,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-28 03:14:45,468 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:45,469 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 03:14:45,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 03:14:45,469 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:45,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:45,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1138389688, now seen corresponding path program 1 times [2020-11-28 03:14:45,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:45,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581785343] [2020-11-28 03:14:45,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:45,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:45,563 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 03:14:45,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581785343] [2020-11-28 03:14:45,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:45,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:14:45,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883697874] [2020-11-28 03:14:45,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:14:45,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:45,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:14:45,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:14:45,565 INFO L87 Difference]: Start difference. First operand 161 states and 217 transitions. Second operand 5 states. [2020-11-28 03:14:45,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:45,786 INFO L93 Difference]: Finished difference Result 347 states and 473 transitions. [2020-11-28 03:14:45,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:14:45,786 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-11-28 03:14:45,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:45,788 INFO L225 Difference]: With dead ends: 347 [2020-11-28 03:14:45,789 INFO L226 Difference]: Without dead ends: 234 [2020-11-28 03:14:45,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:14:45,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-11-28 03:14:45,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 157. [2020-11-28 03:14:45,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-11-28 03:14:45,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 209 transitions. [2020-11-28 03:14:45,807 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 209 transitions. Word has length 31 [2020-11-28 03:14:45,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:45,807 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 209 transitions. [2020-11-28 03:14:45,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:14:45,808 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 209 transitions. [2020-11-28 03:14:45,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-28 03:14:45,809 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:45,810 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:45,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 03:14:45,810 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:45,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:45,811 INFO L82 PathProgramCache]: Analyzing trace with hash -2032974090, now seen corresponding path program 1 times [2020-11-28 03:14:45,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:45,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924108235] [2020-11-28 03:14:45,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:45,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:45,941 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 03:14:45,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924108235] [2020-11-28 03:14:45,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:45,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:14:45,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873034242] [2020-11-28 03:14:45,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:14:45,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:45,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:14:45,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:14:45,945 INFO L87 Difference]: Start difference. First operand 157 states and 209 transitions. Second operand 6 states. [2020-11-28 03:14:46,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:46,064 INFO L93 Difference]: Finished difference Result 331 states and 442 transitions. [2020-11-28 03:14:46,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:14:46,068 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2020-11-28 03:14:46,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:46,070 INFO L225 Difference]: With dead ends: 331 [2020-11-28 03:14:46,070 INFO L226 Difference]: Without dead ends: 180 [2020-11-28 03:14:46,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:14:46,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-11-28 03:14:46,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 133. [2020-11-28 03:14:46,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-11-28 03:14:46,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 173 transitions. [2020-11-28 03:14:46,110 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 173 transitions. Word has length 48 [2020-11-28 03:14:46,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:46,111 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 173 transitions. [2020-11-28 03:14:46,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:14:46,111 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 173 transitions. [2020-11-28 03:14:46,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-28 03:14:46,112 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:46,112 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:46,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 03:14:46,113 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:46,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:46,113 INFO L82 PathProgramCache]: Analyzing trace with hash -978255182, now seen corresponding path program 1 times [2020-11-28 03:14:46,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:46,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385032395] [2020-11-28 03:14:46,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:46,220 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-28 03:14:46,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385032395] [2020-11-28 03:14:46,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:46,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:14:46,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433924339] [2020-11-28 03:14:46,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:14:46,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:46,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:14:46,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:14:46,223 INFO L87 Difference]: Start difference. First operand 133 states and 173 transitions. Second operand 6 states. [2020-11-28 03:14:46,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:46,465 INFO L93 Difference]: Finished difference Result 675 states and 895 transitions. [2020-11-28 03:14:46,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 03:14:46,466 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-11-28 03:14:46,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:46,471 INFO L225 Difference]: With dead ends: 675 [2020-11-28 03:14:46,471 INFO L226 Difference]: Without dead ends: 548 [2020-11-28 03:14:46,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-11-28 03:14:46,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2020-11-28 03:14:46,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 258. [2020-11-28 03:14:46,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-11-28 03:14:46,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 333 transitions. [2020-11-28 03:14:46,511 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 333 transitions. Word has length 49 [2020-11-28 03:14:46,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:46,512 INFO L481 AbstractCegarLoop]: Abstraction has 258 states and 333 transitions. [2020-11-28 03:14:46,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:14:46,513 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 333 transitions. [2020-11-28 03:14:46,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-28 03:14:46,514 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:46,514 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:46,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-28 03:14:46,515 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:46,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:46,515 INFO L82 PathProgramCache]: Analyzing trace with hash 216776629, now seen corresponding path program 1 times [2020-11-28 03:14:46,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:46,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658687223] [2020-11-28 03:14:46,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:46,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:46,636 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:14:46,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658687223] [2020-11-28 03:14:46,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65702696] [2020-11-28 03:14:46,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_419a695f-e263-4795-9402-a2dcc2b222f3/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:14:46,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:46,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:14:46,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:14:46,988 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:14:46,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:14:46,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-11-28 03:14:46,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893245119] [2020-11-28 03:14:46,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:14:46,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:46,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:14:46,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:14:46,993 INFO L87 Difference]: Start difference. First operand 258 states and 333 transitions. Second operand 6 states. [2020-11-28 03:14:47,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:47,588 INFO L93 Difference]: Finished difference Result 786 states and 1030 transitions. [2020-11-28 03:14:47,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:14:47,589 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-11-28 03:14:47,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:47,593 INFO L225 Difference]: With dead ends: 786 [2020-11-28 03:14:47,594 INFO L226 Difference]: Without dead ends: 582 [2020-11-28 03:14:47,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:14:47,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2020-11-28 03:14:47,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 362. [2020-11-28 03:14:47,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2020-11-28 03:14:47,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 470 transitions. [2020-11-28 03:14:47,648 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 470 transitions. Word has length 50 [2020-11-28 03:14:47,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:47,649 INFO L481 AbstractCegarLoop]: Abstraction has 362 states and 470 transitions. [2020-11-28 03:14:47,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:14:47,649 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 470 transitions. [2020-11-28 03:14:47,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-11-28 03:14:47,650 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:47,651 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:14:47,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-28 03:14:47,868 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:14:47,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:47,868 INFO L82 PathProgramCache]: Analyzing trace with hash -691023976, now seen corresponding path program 2 times [2020-11-28 03:14:47,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:47,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933966792] [2020-11-28 03:14:47,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:47,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:47,996 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:48,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:48,074 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:48,179 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:14:48,179 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:14:48,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-28 03:14:48,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:14:48 BoogieIcfgContainer [2020-11-28 03:14:48,427 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:14:48,428 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:14:48,428 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:14:48,428 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:14:48,429 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:14:42" (3/4) ... [2020-11-28 03:14:48,432 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:14:48,668 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_419a695f-e263-4795-9402-a2dcc2b222f3/bin/uautomizer/witness.graphml [2020-11-28 03:14:48,669 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:14:48,671 INFO L168 Benchmark]: Toolchain (without parser) took 8276.20 ms. Allocated memory was 115.3 MB in the beginning and 195.0 MB in the end (delta: 79.7 MB). Free memory was 85.5 MB in the beginning and 108.3 MB in the end (delta: -22.8 MB). Peak memory consumption was 56.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:48,672 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 79.7 MB. Free memory was 40.4 MB in the beginning and 40.3 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:14:48,672 INFO L168 Benchmark]: CACSL2BoogieTranslator took 663.40 ms. Allocated memory is still 115.3 MB. Free memory was 85.1 MB in the beginning and 80.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:48,673 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.54 ms. Allocated memory is still 115.3 MB. Free memory was 80.9 MB in the beginning and 77.2 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:48,673 INFO L168 Benchmark]: Boogie Preprocessor took 86.15 ms. Allocated memory is still 115.3 MB. Free memory was 77.2 MB in the beginning and 74.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:48,675 INFO L168 Benchmark]: RCFGBuilder took 1505.74 ms. Allocated memory is still 115.3 MB. Free memory was 74.6 MB in the beginning and 53.5 MB in the end (delta: 21.1 MB). Peak memory consumption was 28.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:48,676 INFO L168 Benchmark]: TraceAbstraction took 5669.75 ms. Allocated memory was 115.3 MB in the beginning and 195.0 MB in the end (delta: 79.7 MB). Free memory was 53.4 MB in the beginning and 135.6 MB in the end (delta: -82.2 MB). Peak memory consumption was 62.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:48,676 INFO L168 Benchmark]: Witness Printer took 240.92 ms. Allocated memory is still 195.0 MB. Free memory was 135.6 MB in the beginning and 108.3 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:48,679 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 79.7 MB. Free memory was 40.4 MB in the beginning and 40.3 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 663.40 ms. Allocated memory is still 115.3 MB. Free memory was 85.1 MB in the beginning and 80.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 92.54 ms. Allocated memory is still 115.3 MB. Free memory was 80.9 MB in the beginning and 77.2 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 86.15 ms. Allocated memory is still 115.3 MB. Free memory was 77.2 MB in the beginning and 74.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1505.74 ms. Allocated memory is still 115.3 MB. Free memory was 74.6 MB in the beginning and 53.5 MB in the end (delta: 21.1 MB). Peak memory consumption was 28.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5669.75 ms. Allocated memory was 115.3 MB in the beginning and 195.0 MB in the end (delta: 79.7 MB). Free memory was 53.4 MB in the beginning and 135.6 MB in the end (delta: -82.2 MB). Peak memory consumption was 62.5 MB. Max. memory is 16.1 GB. * Witness Printer took 240.92 ms. Allocated memory is still 195.0 MB. Free memory was 135.6 MB in the beginning and 108.3 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 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: [L157] int pumpRunning = 0; [L158] int systemActive = 1; [L336] int cleanupTimeShifts = 4; [L442] int waterLevel = 1; [L443] int methaneLevelCritical = 0; [L705] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L409] int retValue_acc ; [L410] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L416] tmp = valid_product() [L418] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L85] int splverifierCounter ; [L86] int tmp ; [L87] int tmp___0 ; [L88] int tmp___1 ; [L89] int tmp___2 ; [L92] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L94] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L96] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L102] tmp = __VERIFIER_nondet_int() [L104] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L460] COND TRUE waterLevel < 2 [L461] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L112] tmp___0 = __VERIFIER_nondet_int() [L114] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L122] tmp___2 = __VERIFIER_nondet_int() [L124] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L165] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L172] COND TRUE \read(systemActive) [L220] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L223] COND FALSE !(\read(pumpRunning)) [L194] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L197] COND TRUE ! pumpRunning [L317] int retValue_acc ; [L318] int tmp ; [L319] int tmp___0 ; [L522] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L525] COND FALSE !(waterLevel < 2) [L529] retValue_acc = 0 [L530] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L323] tmp = isHighWaterSensorDry() [L325] COND FALSE !(\read(tmp)) [L328] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L330] retValue_acc = tmp___0 [L331] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L199] tmp = isHighWaterLevel() [L201] COND TRUE \read(tmp) [L248] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L903] int tmp ; [L904] int tmp___0 ; [L513] int retValue_acc ; [L516] retValue_acc = waterLevel [L517] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L908] tmp = getWaterLevel() [L910] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L94] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L96] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L102] tmp = __VERIFIER_nondet_int() [L104] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L112] tmp___0 = __VERIFIER_nondet_int() [L114] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L122] tmp___2 = __VERIFIER_nondet_int() [L124] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L165] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L448] COND TRUE waterLevel > 0 [L449] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L172] COND TRUE \read(systemActive) [L220] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L223] COND TRUE \read(pumpRunning) [L261] int retValue_acc ; [L481] int retValue_acc ; [L484] retValue_acc = methaneLevelCritical [L485] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L265] retValue_acc = isMethaneLevelCritical() [L267] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L225] tmp = isMethaneAlarm() [L227] COND FALSE !(\read(tmp)) [L194] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L197] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L903] int tmp ; [L904] int tmp___0 ; [L513] int retValue_acc ; [L516] retValue_acc = waterLevel [L517] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L908] tmp = getWaterLevel() [L910] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L94] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L96] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L102] tmp = __VERIFIER_nondet_int() [L104] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L112] tmp___0 = __VERIFIER_nondet_int() [L114] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L122] tmp___2 = __VERIFIER_nondet_int() [L124] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L165] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L448] COND TRUE waterLevel > 0 [L449] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L172] COND TRUE \read(systemActive) [L220] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L223] COND TRUE \read(pumpRunning) [L261] int retValue_acc ; [L481] int retValue_acc ; [L484] retValue_acc = methaneLevelCritical [L485] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L265] retValue_acc = isMethaneLevelCritical() [L267] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L225] tmp = isMethaneAlarm() [L227] COND FALSE !(\read(tmp)) [L194] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L197] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L903] int tmp ; [L904] int tmp___0 ; [L513] int retValue_acc ; [L516] retValue_acc = waterLevel [L517] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L908] tmp = getWaterLevel() [L910] COND TRUE tmp == 0 [L272] int retValue_acc ; [L275] retValue_acc = pumpRunning [L276] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L912] tmp___0 = isPumpRunning() [L914] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L3] __assert_fail("0", "minepump_spec4_product37.cil.c", 3, "reach_error") VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 114 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.3s, OverallIterations: 13, TraceHistogramMax: 3, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1166 SDtfs, 1704 SDslu, 1731 SDs, 0 SdLazy, 272 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=12, 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, 12 MinimizatonAttempts, 866 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 498 NumberOfCodeBlocks, 498 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 416 ConstructedInterpolants, 0 QuantifiedInterpolants, 30071 SizeOfPredicates, 4 NumberOfNonLiveVariables, 416 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 13 InterpolantComputations, 11 PerfectInterpolantSequences, 50/56 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...