./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec1_product55.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/minepump_spec1_product55.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 dbf7149ba5f2c2b45723d578c2ed612c4c7ff3d9 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.25-9a8b2e8 [2020-10-20 01:41:51,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 01:41:51,866 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 01:41:51,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 01:41:51,891 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 01:41:51,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 01:41:51,894 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 01:41:51,896 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 01:41:51,897 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 01:41:51,898 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 01:41:51,899 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 01:41:51,900 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 01:41:51,901 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 01:41:51,902 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 01:41:51,903 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 01:41:51,905 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 01:41:51,906 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 01:41:51,907 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 01:41:51,909 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 01:41:51,911 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 01:41:51,913 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 01:41:51,914 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 01:41:51,915 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 01:41:51,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 01:41:51,923 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 01:41:51,923 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 01:41:51,923 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 01:41:51,934 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 01:41:51,935 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 01:41:51,936 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 01:41:51,936 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 01:41:51,937 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 01:41:51,937 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 01:41:51,938 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 01:41:51,939 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 01:41:51,939 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 01:41:51,940 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 01:41:51,940 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 01:41:51,941 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 01:41:51,941 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 01:41:51,942 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 01:41:51,943 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 01:41:51,966 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 01:41:51,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 01:41:51,968 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 01:41:51,968 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 01:41:51,968 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 01:41:51,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 01:41:51,969 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 01:41:51,969 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 01:41:51,969 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 01:41:51,969 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 01:41:51,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 01:41:51,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 01:41:51,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 01:41:51,970 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 01:41:51,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 01:41:51,970 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 01:41:51,971 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 01:41:51,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 01:41:51,971 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 01:41:51,971 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 01:41:51,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 01:41:51,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:41:51,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 01:41:51,972 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 01:41:51,972 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 01:41:51,972 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 01:41:51,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 01:41:51,973 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 01:41:51,973 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 01:41:51,973 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> dbf7149ba5f2c2b45723d578c2ed612c4c7ff3d9 [2020-10-20 01:41:52,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 01:41:52,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 01:41:52,205 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 01:41:52,209 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 01:41:52,210 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 01:41:52,211 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product55.cil.c [2020-10-20 01:41:52,285 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85a21e94d/9c50869d31ec4fe0a8937e0fdcfdda02/FLAG232e4c010 [2020-10-20 01:41:52,827 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 01:41:52,827 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product55.cil.c [2020-10-20 01:41:52,843 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85a21e94d/9c50869d31ec4fe0a8937e0fdcfdda02/FLAG232e4c010 [2020-10-20 01:41:53,122 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85a21e94d/9c50869d31ec4fe0a8937e0fdcfdda02 [2020-10-20 01:41:53,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 01:41:53,133 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 01:41:53,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 01:41:53,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 01:41:53,137 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 01:41:53,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:41:53" (1/1) ... [2020-10-20 01:41:53,142 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53cc601d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:53, skipping insertion in model container [2020-10-20 01:41:53,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:41:53" (1/1) ... [2020-10-20 01:41:53,153 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 01:41:53,222 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 01:41:53,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:41:53,624 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 01:41:53,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:41:53,795 INFO L208 MainTranslator]: Completed translation [2020-10-20 01:41:53,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:53 WrapperNode [2020-10-20 01:41:53,796 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 01:41:53,796 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 01:41:53,796 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 01:41:53,796 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 01:41:53,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:53" (1/1) ... [2020-10-20 01:41:53,822 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:53" (1/1) ... [2020-10-20 01:41:53,884 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 01:41:53,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 01:41:53,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 01:41:53,885 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 01:41:53,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:53" (1/1) ... [2020-10-20 01:41:53,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:53" (1/1) ... [2020-10-20 01:41:53,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:53" (1/1) ... [2020-10-20 01:41:53,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:53" (1/1) ... [2020-10-20 01:41:53,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:53" (1/1) ... [2020-10-20 01:41:53,949 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:53" (1/1) ... [2020-10-20 01:41:53,954 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:53" (1/1) ... [2020-10-20 01:41:53,961 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 01:41:53,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 01:41:53,962 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 01:41:53,962 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 01:41:53,963 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 01:41:54,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 01:41:54,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 01:41:54,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 01:41:54,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 01:41:55,183 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 01:41:55,184 INFO L298 CfgBuilder]: Removed 286 assume(true) statements. [2020-10-20 01:41:55,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:41:55 BoogieIcfgContainer [2020-10-20 01:41:55,189 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 01:41:55,192 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 01:41:55,193 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 01:41:55,196 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 01:41:55,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 01:41:53" (1/3) ... [2020-10-20 01:41:55,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ae85c39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:41:55, skipping insertion in model container [2020-10-20 01:41:55,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:53" (2/3) ... [2020-10-20 01:41:55,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ae85c39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:41:55, skipping insertion in model container [2020-10-20 01:41:55,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:41:55" (3/3) ... [2020-10-20 01:41:55,202 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product55.cil.c [2020-10-20 01:41:55,215 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 01:41:55,224 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-20 01:41:55,252 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-20 01:41:55,289 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 01:41:55,289 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 01:41:55,289 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 01:41:55,290 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 01:41:55,291 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 01:41:55,291 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 01:41:55,292 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 01:41:55,292 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 01:41:55,322 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states. [2020-10-20 01:41:55,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 01:41:55,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:55,332 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:41:55,332 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:55,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:55,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1505234651, now seen corresponding path program 1 times [2020-10-20 01:41:55,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:55,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986441372] [2020-10-20 01:41:55,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:55,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:55,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:55,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986441372] [2020-10-20 01:41:55,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:55,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:41:55,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724823193] [2020-10-20 01:41:55,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 01:41:55,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:55,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 01:41:55,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 01:41:55,699 INFO L87 Difference]: Start difference. First operand 194 states. Second operand 2 states. [2020-10-20 01:41:55,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:55,787 INFO L93 Difference]: Finished difference Result 379 states and 578 transitions. [2020-10-20 01:41:55,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 01:41:55,789 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-10-20 01:41:55,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:55,817 INFO L225 Difference]: With dead ends: 379 [2020-10-20 01:41:55,817 INFO L226 Difference]: Without dead ends: 187 [2020-10-20 01:41:55,823 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 [2020-10-20 01:41:55,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-20 01:41:55,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2020-10-20 01:41:55,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-20 01:41:55,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 279 transitions. [2020-10-20 01:41:55,897 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 279 transitions. Word has length 16 [2020-10-20 01:41:55,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:55,898 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 279 transitions. [2020-10-20 01:41:55,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 01:41:55,898 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 279 transitions. [2020-10-20 01:41:55,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 01:41:55,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:55,899 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:41:55,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 01:41:55,900 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:55,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:55,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1742975748, now seen corresponding path program 1 times [2020-10-20 01:41:55,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:55,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944370371] [2020-10-20 01:41:55,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:55,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:56,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:56,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944370371] [2020-10-20 01:41:56,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:56,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 01:41:56,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976608215] [2020-10-20 01:41:56,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:41:56,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:56,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:41:56,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:41:56,060 INFO L87 Difference]: Start difference. First operand 187 states and 279 transitions. Second operand 3 states. [2020-10-20 01:41:56,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:56,076 INFO L93 Difference]: Finished difference Result 187 states and 279 transitions. [2020-10-20 01:41:56,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:41:56,077 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-20 01:41:56,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:56,078 INFO L225 Difference]: With dead ends: 187 [2020-10-20 01:41:56,078 INFO L226 Difference]: Without dead ends: 73 [2020-10-20 01:41:56,080 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 [2020-10-20 01:41:56,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-20 01:41:56,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-10-20 01:41:56,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-20 01:41:56,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 108 transitions. [2020-10-20 01:41:56,089 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 108 transitions. Word has length 17 [2020-10-20 01:41:56,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:56,090 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 108 transitions. [2020-10-20 01:41:56,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:41:56,090 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 108 transitions. [2020-10-20 01:41:56,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-20 01:41:56,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:56,091 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] [2020-10-20 01:41:56,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 01:41:56,092 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:56,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:56,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1082167242, now seen corresponding path program 1 times [2020-10-20 01:41:56,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:56,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123258567] [2020-10-20 01:41:56,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:56,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:56,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:56,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123258567] [2020-10-20 01:41:56,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:56,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:41:56,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268322828] [2020-10-20 01:41:56,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:41:56,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:56,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:41:56,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:41:56,182 INFO L87 Difference]: Start difference. First operand 73 states and 108 transitions. Second operand 3 states. [2020-10-20 01:41:56,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:56,220 INFO L93 Difference]: Finished difference Result 207 states and 312 transitions. [2020-10-20 01:41:56,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:41:56,224 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-20 01:41:56,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:56,226 INFO L225 Difference]: With dead ends: 207 [2020-10-20 01:41:56,226 INFO L226 Difference]: Without dead ends: 140 [2020-10-20 01:41:56,227 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 [2020-10-20 01:41:56,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-20 01:41:56,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 136. [2020-10-20 01:41:56,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-20 01:41:56,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 205 transitions. [2020-10-20 01:41:56,260 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 205 transitions. Word has length 22 [2020-10-20 01:41:56,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:56,261 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 205 transitions. [2020-10-20 01:41:56,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:41:56,262 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 205 transitions. [2020-10-20 01:41:56,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-20 01:41:56,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:56,264 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:41:56,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 01:41:56,265 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:56,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:56,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1933185311, now seen corresponding path program 1 times [2020-10-20 01:41:56,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:56,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353246150] [2020-10-20 01:41:56,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:56,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:56,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353246150] [2020-10-20 01:41:56,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:56,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:41:56,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728849280] [2020-10-20 01:41:56,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:41:56,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:56,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:41:56,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:41:56,381 INFO L87 Difference]: Start difference. First operand 136 states and 205 transitions. Second operand 3 states. [2020-10-20 01:41:56,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:56,460 INFO L93 Difference]: Finished difference Result 283 states and 430 transitions. [2020-10-20 01:41:56,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:41:56,461 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-20 01:41:56,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:56,463 INFO L225 Difference]: With dead ends: 283 [2020-10-20 01:41:56,463 INFO L226 Difference]: Without dead ends: 153 [2020-10-20 01:41:56,464 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 [2020-10-20 01:41:56,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-20 01:41:56,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 151. [2020-10-20 01:41:56,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-20 01:41:56,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 219 transitions. [2020-10-20 01:41:56,478 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 219 transitions. Word has length 25 [2020-10-20 01:41:56,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:56,479 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 219 transitions. [2020-10-20 01:41:56,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:41:56,479 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 219 transitions. [2020-10-20 01:41:56,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-20 01:41:56,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:56,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:41:56,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 01:41:56,481 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:56,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:56,482 INFO L82 PathProgramCache]: Analyzing trace with hash 2034893835, now seen corresponding path program 1 times [2020-10-20 01:41:56,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:56,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444877728] [2020-10-20 01:41:56,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:56,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:56,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:56,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444877728] [2020-10-20 01:41:56,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:56,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:41:56,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32823306] [2020-10-20 01:41:56,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:41:56,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:56,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:41:56,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:41:56,580 INFO L87 Difference]: Start difference. First operand 151 states and 219 transitions. Second operand 5 states. [2020-10-20 01:41:56,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:56,693 INFO L93 Difference]: Finished difference Result 763 states and 1120 transitions. [2020-10-20 01:41:56,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 01:41:56,694 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-20 01:41:56,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:56,698 INFO L225 Difference]: With dead ends: 763 [2020-10-20 01:41:56,698 INFO L226 Difference]: Without dead ends: 618 [2020-10-20 01:41:56,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-20 01:41:56,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-10-20 01:41:56,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 286. [2020-10-20 01:41:56,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-10-20 01:41:56,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 411 transitions. [2020-10-20 01:41:56,762 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 411 transitions. Word has length 25 [2020-10-20 01:41:56,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:56,763 INFO L481 AbstractCegarLoop]: Abstraction has 286 states and 411 transitions. [2020-10-20 01:41:56,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:41:56,763 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 411 transitions. [2020-10-20 01:41:56,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-20 01:41:56,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:56,769 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] [2020-10-20 01:41:56,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 01:41:56,770 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:56,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:56,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1831086741, now seen corresponding path program 1 times [2020-10-20 01:41:56,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:56,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991603403] [2020-10-20 01:41:56,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:56,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:56,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:56,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991603403] [2020-10-20 01:41:56,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:56,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:41:56,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654752892] [2020-10-20 01:41:56,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:41:56,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:56,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:41:56,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:41:56,876 INFO L87 Difference]: Start difference. First operand 286 states and 411 transitions. Second operand 5 states. [2020-10-20 01:41:57,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:57,081 INFO L93 Difference]: Finished difference Result 832 states and 1198 transitions. [2020-10-20 01:41:57,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 01:41:57,082 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-10-20 01:41:57,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:57,086 INFO L225 Difference]: With dead ends: 832 [2020-10-20 01:41:57,087 INFO L226 Difference]: Without dead ends: 830 [2020-10-20 01:41:57,087 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-20 01:41:57,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2020-10-20 01:41:57,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 286. [2020-10-20 01:41:57,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-10-20 01:41:57,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 409 transitions. [2020-10-20 01:41:57,110 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 409 transitions. Word has length 26 [2020-10-20 01:41:57,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:57,111 INFO L481 AbstractCegarLoop]: Abstraction has 286 states and 409 transitions. [2020-10-20 01:41:57,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:41:57,111 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 409 transitions. [2020-10-20 01:41:57,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-20 01:41:57,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:57,112 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:41:57,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 01:41:57,113 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:57,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:57,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1549689670, now seen corresponding path program 1 times [2020-10-20 01:41:57,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:57,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908740746] [2020-10-20 01:41:57,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:57,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:57,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:57,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908740746] [2020-10-20 01:41:57,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:57,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:41:57,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43249761] [2020-10-20 01:41:57,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:41:57,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:57,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:41:57,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:41:57,202 INFO L87 Difference]: Start difference. First operand 286 states and 409 transitions. Second operand 5 states. [2020-10-20 01:41:57,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:57,317 INFO L93 Difference]: Finished difference Result 766 states and 1076 transitions. [2020-10-20 01:41:57,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 01:41:57,318 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-10-20 01:41:57,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:57,321 INFO L225 Difference]: With dead ends: 766 [2020-10-20 01:41:57,321 INFO L226 Difference]: Without dead ends: 486 [2020-10-20 01:41:57,323 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 [2020-10-20 01:41:57,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2020-10-20 01:41:57,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 322. [2020-10-20 01:41:57,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2020-10-20 01:41:57,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 445 transitions. [2020-10-20 01:41:57,465 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 445 transitions. Word has length 32 [2020-10-20 01:41:57,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:57,467 INFO L481 AbstractCegarLoop]: Abstraction has 322 states and 445 transitions. [2020-10-20 01:41:57,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:41:57,468 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 445 transitions. [2020-10-20 01:41:57,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-20 01:41:57,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:57,471 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:41:57,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 01:41:57,471 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:57,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:57,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1942716680, now seen corresponding path program 1 times [2020-10-20 01:41:57,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:57,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769059912] [2020-10-20 01:41:57,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:57,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:57,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:57,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769059912] [2020-10-20 01:41:57,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:57,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:41:57,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896570837] [2020-10-20 01:41:57,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:41:57,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:57,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:41:57,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:41:57,541 INFO L87 Difference]: Start difference. First operand 322 states and 445 transitions. Second operand 5 states. [2020-10-20 01:41:57,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:57,702 INFO L93 Difference]: Finished difference Result 882 states and 1193 transitions. [2020-10-20 01:41:57,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 01:41:57,703 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-10-20 01:41:57,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:57,707 INFO L225 Difference]: With dead ends: 882 [2020-10-20 01:41:57,707 INFO L226 Difference]: Without dead ends: 566 [2020-10-20 01:41:57,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-20 01:41:57,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2020-10-20 01:41:57,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 346. [2020-10-20 01:41:57,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2020-10-20 01:41:57,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 469 transitions. [2020-10-20 01:41:57,733 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 469 transitions. Word has length 32 [2020-10-20 01:41:57,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:57,734 INFO L481 AbstractCegarLoop]: Abstraction has 346 states and 469 transitions. [2020-10-20 01:41:57,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:41:57,734 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 469 transitions. [2020-10-20 01:41:57,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-20 01:41:57,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:57,735 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:41:57,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 01:41:57,736 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:57,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:57,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1684551242, now seen corresponding path program 1 times [2020-10-20 01:41:57,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:57,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900684690] [2020-10-20 01:41:57,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:57,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:57,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:57,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900684690] [2020-10-20 01:41:57,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:57,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:41:57,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585239030] [2020-10-20 01:41:57,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:41:57,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:57,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:41:57,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:41:57,783 INFO L87 Difference]: Start difference. First operand 346 states and 469 transitions. Second operand 3 states. [2020-10-20 01:41:57,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:57,854 INFO L93 Difference]: Finished difference Result 794 states and 1070 transitions. [2020-10-20 01:41:57,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:41:57,855 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-20 01:41:57,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:57,858 INFO L225 Difference]: With dead ends: 794 [2020-10-20 01:41:57,858 INFO L226 Difference]: Without dead ends: 454 [2020-10-20 01:41:57,859 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 [2020-10-20 01:41:57,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2020-10-20 01:41:57,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 454. [2020-10-20 01:41:57,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2020-10-20 01:41:57,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 599 transitions. [2020-10-20 01:41:57,890 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 599 transitions. Word has length 32 [2020-10-20 01:41:57,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:57,890 INFO L481 AbstractCegarLoop]: Abstraction has 454 states and 599 transitions. [2020-10-20 01:41:57,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:41:57,891 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 599 transitions. [2020-10-20 01:41:57,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-20 01:41:57,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:57,892 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:41:57,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 01:41:57,893 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:57,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:57,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1539369524, now seen corresponding path program 1 times [2020-10-20 01:41:57,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:57,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978857708] [2020-10-20 01:41:57,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:57,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:41:57,959 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:41:58,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:41:58,018 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:41:58,062 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 01:41:58,063 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 01:41:58,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-20 01:41:58,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 01:41:58 BoogieIcfgContainer [2020-10-20 01:41:58,171 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 01:41:58,172 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 01:41:58,172 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 01:41:58,172 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 01:41:58,173 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:41:55" (3/4) ... [2020-10-20 01:41:58,178 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 01:41:58,274 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 01:41:58,275 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 01:41:58,278 INFO L168 Benchmark]: Toolchain (without parser) took 5149.61 ms. Allocated memory was 37.2 MB in the beginning and 84.4 MB in the end (delta: 47.2 MB). Free memory was 18.8 MB in the beginning and 35.3 MB in the end (delta: -16.5 MB). Peak memory consumption was 30.7 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:58,278 INFO L168 Benchmark]: CDTParser took 0.67 ms. Allocated memory is still 34.6 MB. Free memory was 11.7 MB in the beginning and 11.7 MB in the end (delta: 45.6 kB). Peak memory consumption was 45.6 kB. Max. memory is 14.3 GB. [2020-10-20 01:41:58,279 INFO L168 Benchmark]: CACSL2BoogieTranslator took 662.16 ms. Allocated memory was 37.2 MB in the beginning and 45.6 MB in the end (delta: 8.4 MB). Free memory was 17.9 MB in the beginning and 27.5 MB in the end (delta: -9.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:58,280 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.08 ms. Allocated memory is still 45.6 MB. Free memory was 27.3 MB in the beginning and 22.0 MB in the end (delta: 5.3 MB). Peak memory consumption was 5.3 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:58,280 INFO L168 Benchmark]: Boogie Preprocessor took 76.71 ms. Allocated memory is still 45.6 MB. Free memory was 22.0 MB in the beginning and 18.4 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:58,281 INFO L168 Benchmark]: RCFGBuilder took 1227.13 ms. Allocated memory was 45.6 MB in the beginning and 52.4 MB in the end (delta: 6.8 MB). Free memory was 18.1 MB in the beginning and 12.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:58,281 INFO L168 Benchmark]: TraceAbstraction took 2979.66 ms. Allocated memory was 52.4 MB in the beginning and 84.4 MB in the end (delta: 32.0 MB). Free memory was 12.3 MB in the beginning and 51.2 MB in the end (delta: -38.9 MB). Peak memory consumption was 27.5 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:58,282 INFO L168 Benchmark]: Witness Printer took 102.99 ms. Allocated memory is still 84.4 MB. Free memory was 51.2 MB in the beginning and 35.3 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:58,285 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67 ms. Allocated memory is still 34.6 MB. Free memory was 11.7 MB in the beginning and 11.7 MB in the end (delta: 45.6 kB). Peak memory consumption was 45.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 662.16 ms. Allocated memory was 37.2 MB in the beginning and 45.6 MB in the end (delta: 8.4 MB). Free memory was 17.9 MB in the beginning and 27.5 MB in the end (delta: -9.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 88.08 ms. Allocated memory is still 45.6 MB. Free memory was 27.3 MB in the beginning and 22.0 MB in the end (delta: 5.3 MB). Peak memory consumption was 5.3 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 76.71 ms. Allocated memory is still 45.6 MB. Free memory was 22.0 MB in the beginning and 18.4 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 14.3 GB. * RCFGBuilder took 1227.13 ms. Allocated memory was 45.6 MB in the beginning and 52.4 MB in the end (delta: 6.8 MB). Free memory was 18.1 MB in the beginning and 12.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 14.3 GB. * TraceAbstraction took 2979.66 ms. Allocated memory was 52.4 MB in the beginning and 84.4 MB in the end (delta: 32.0 MB). Free memory was 12.3 MB in the beginning and 51.2 MB in the end (delta: -38.9 MB). Peak memory consumption was 27.5 MB. Max. memory is 14.3 GB. * Witness Printer took 102.99 ms. Allocated memory is still 84.4 MB. Free memory was 51.2 MB in the beginning and 35.3 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 14.3 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: [L161] int pumpRunning = 0; [L162] int systemActive = 1; [L401] int waterLevel = 1; [L402] int methaneLevelCritical = 0; [L513] int cleanupTimeShifts = 4; [L804] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L586] int retValue_acc ; [L587] 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] [L593] tmp = valid_product() [L595] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L86] int splverifierCounter ; [L87] int tmp ; [L88] int tmp___0 ; [L89] int tmp___1 ; [L90] int tmp___2 ; [L93] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L95] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L97] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L103] tmp = __VERIFIER_nondet_int() [L105] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L419] COND TRUE waterLevel < 2 [L420] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L113] tmp___0 = __VERIFIER_nondet_int() [L115] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L431] COND FALSE !(\read(methaneLevelCritical)) [L434] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L123] tmp___2 = __VERIFIER_nondet_int() [L125] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L169] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L176] COND TRUE \read(systemActive) [L250] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L253] COND FALSE !(\read(pumpRunning)) [L224] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L227] COND FALSE !(\read(pumpRunning)) [L198] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L201] COND TRUE ! pumpRunning [L347] int retValue_acc ; [L348] int tmp ; [L349] int tmp___0 ; [L481] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L484] COND FALSE !(waterLevel < 2) [L488] retValue_acc = 0 [L489] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L353] tmp = isHighWaterSensorDry() [L355] COND FALSE !(\read(tmp)) [L358] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L360] retValue_acc = tmp___0 [L361] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L203] tmp = isHighWaterLevel() [L205] COND TRUE \read(tmp) [L278] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L610] int tmp ; [L611] int tmp___0 ; [L440] int retValue_acc ; [L443] retValue_acc = methaneLevelCritical [L444] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L615] tmp = isMethaneLevelCritical() [L617] COND TRUE \read(tmp) [L302] int retValue_acc ; [L305] retValue_acc = pumpRunning [L306] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L619] tmp___0 = isPumpRunning() [L621] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L3] __assert_fail("0", "minepump_spec1_product55.cil.c", 3, "reach_error") VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 194 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.7s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1184 SDtfs, 1444 SDslu, 1538 SDs, 0 SdLazy, 215 SolverSat, 63 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=454occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 1266 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 260 NumberOfCodeBlocks, 260 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 218 ConstructedInterpolants, 0 QuantifiedInterpolants, 11952 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...