./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec1_product54.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_product54.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 9c69bef4f4f2450c32edaec1a26ef48007ef0e6d ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 01:41:51,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 01:41:51,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 01:41:51,676 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 01:41:51,677 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 01:41:51,678 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 01:41:51,679 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 01:41:51,681 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 01:41:51,682 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 01:41:51,683 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 01:41:51,684 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 01:41:51,685 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 01:41:51,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 01:41:51,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 01:41:51,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 01:41:51,689 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 01:41:51,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 01:41:51,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 01:41:51,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 01:41:51,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 01:41:51,696 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 01:41:51,698 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 01:41:51,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 01:41:51,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 01:41:51,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 01:41:51,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 01:41:51,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 01:41:51,714 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 01:41:51,715 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 01:41:51,716 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 01:41:51,716 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 01:41:51,717 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 01:41:51,718 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 01:41:51,718 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 01:41:51,719 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 01:41:51,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 01:41:51,720 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 01:41:51,720 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 01:41:51,720 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 01:41:51,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 01:41:51,722 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 01:41:51,723 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 01:41:51,765 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 01:41:51,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 01:41:51,768 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 01:41:51,768 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 01:41:51,768 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 01:41:51,769 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 01:41:51,769 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 01:41:51,769 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 01:41:51,769 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 01:41:51,770 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 01:41:51,771 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 01:41:51,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 01:41:51,771 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 01:41:51,772 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 01:41:51,772 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 01:41:51,772 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 01:41:51,773 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 01:41:51,773 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 01:41:51,773 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 01:41:51,773 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 01:41:51,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 01:41:51,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:41:51,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 01:41:51,775 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 01:41:51,775 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 01:41:51,775 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 01:41:51,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 01:41:51,776 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 01:41:51,776 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 01:41:51,776 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 -> 9c69bef4f4f2450c32edaec1a26ef48007ef0e6d [2020-10-20 01:41:52,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 01:41:52,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 01:41:52,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 01:41:52,092 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 01:41:52,093 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 01:41:52,094 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product54.cil.c [2020-10-20 01:41:52,155 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fa723d96/13306718cc4044b59c58cd1d0c08470c/FLAGce1065bf5 [2020-10-20 01:41:52,632 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 01:41:52,633 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product54.cil.c [2020-10-20 01:41:52,666 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fa723d96/13306718cc4044b59c58cd1d0c08470c/FLAGce1065bf5 [2020-10-20 01:41:52,978 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fa723d96/13306718cc4044b59c58cd1d0c08470c [2020-10-20 01:41:52,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 01:41:52,989 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 01:41:52,991 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 01:41:52,991 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 01:41:52,995 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 01:41:52,996 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:41:52" (1/1) ... [2020-10-20 01:41:53,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a9179bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:52, skipping insertion in model container [2020-10-20 01:41:53,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:41:52" (1/1) ... [2020-10-20 01:41:53,009 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 01:41:53,051 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 01:41:53,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:41:53,538 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 01:41:53,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:41:53,671 INFO L208 MainTranslator]: Completed translation [2020-10-20 01:41:53,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:53 WrapperNode [2020-10-20 01:41:53,673 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 01:41:53,675 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 01:41:53,675 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 01:41:53,675 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 01:41:53,683 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 01:41:53,701 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 01:41:53,756 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 01:41:53,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 01:41:53,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 01:41:53,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 01:41:53,766 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 01:41:53,766 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 01:41:53,774 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 01:41:53,774 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 01:41:53,793 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 01:41:53,805 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 01:41:53,811 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 01:41:53,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 01:41:53,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 01:41:53,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 01:41:53,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 01:41:53,822 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 01:41:53,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 01:41:53,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 01:41:53,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 01:41:53,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 01:41:55,066 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 01:41:55,067 INFO L298 CfgBuilder]: Removed 284 assume(true) statements. [2020-10-20 01:41:55,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:41:55 BoogieIcfgContainer [2020-10-20 01:41:55,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 01:41:55,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 01:41:55,071 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 01:41:55,074 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 01:41:55,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 01:41:52" (1/3) ... [2020-10-20 01:41:55,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@faced63 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 01:41:55,076 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 01:41:55,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@faced63 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 01:41:55,076 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 01:41:55,078 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product54.cil.c [2020-10-20 01:41:55,090 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 01:41:55,098 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-20 01:41:55,113 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-20 01:41:55,140 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 01:41:55,141 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 01:41:55,141 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 01:41:55,141 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 01:41:55,142 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 01:41:55,142 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 01:41:55,142 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 01:41:55,143 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 01:41:55,165 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states. [2020-10-20 01:41:55,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 01:41:55,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:55,196 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:41:55,197 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:55,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:55,204 INFO L82 PathProgramCache]: Analyzing trace with hash 265155869, now seen corresponding path program 1 times [2020-10-20 01:41:55,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:55,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310025961] [2020-10-20 01:41:55,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:55,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:55,472 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 01:41:55,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310025961] [2020-10-20 01:41:55,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:55,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:41:55,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53924441] [2020-10-20 01:41:55,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 01:41:55,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:55,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 01:41:55,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 01:41:55,498 INFO L87 Difference]: Start difference. First operand 192 states. Second operand 2 states. [2020-10-20 01:41:55,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:55,563 INFO L93 Difference]: Finished difference Result 375 states and 572 transitions. [2020-10-20 01:41:55,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 01:41:55,565 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-10-20 01:41:55,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:55,579 INFO L225 Difference]: With dead ends: 375 [2020-10-20 01:41:55,580 INFO L226 Difference]: Without dead ends: 185 [2020-10-20 01:41:55,584 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 01:41:55,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-20 01:41:55,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2020-10-20 01:41:55,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-10-20 01:41:55,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 276 transitions. [2020-10-20 01:41:55,639 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 276 transitions. Word has length 16 [2020-10-20 01:41:55,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:55,640 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 276 transitions. [2020-10-20 01:41:55,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 01:41:55,640 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 276 transitions. [2020-10-20 01:41:55,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 01:41:55,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:55,642 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 01:41:55,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 01:41:55,643 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:55,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:55,643 INFO L82 PathProgramCache]: Analyzing trace with hash -781601028, now seen corresponding path program 1 times [2020-10-20 01:41:55,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:55,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525000440] [2020-10-20 01:41:55,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:55,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:55,769 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 01:41:55,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525000440] [2020-10-20 01:41:55,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:55,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 01:41:55,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89218587] [2020-10-20 01:41:55,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:41:55,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:55,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:41:55,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:41:55,774 INFO L87 Difference]: Start difference. First operand 185 states and 276 transitions. Second operand 3 states. [2020-10-20 01:41:55,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:55,790 INFO L93 Difference]: Finished difference Result 185 states and 276 transitions. [2020-10-20 01:41:55,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:41:55,791 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-20 01:41:55,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:55,792 INFO L225 Difference]: With dead ends: 185 [2020-10-20 01:41:55,793 INFO L226 Difference]: Without dead ends: 71 [2020-10-20 01:41:55,794 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 01:41:55,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-20 01:41:55,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-10-20 01:41:55,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-20 01:41:55,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 105 transitions. [2020-10-20 01:41:55,802 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 105 transitions. Word has length 17 [2020-10-20 01:41:55,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:55,803 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 105 transitions. [2020-10-20 01:41:55,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:41:55,803 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 105 transitions. [2020-10-20 01:41:55,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-20 01:41:55,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:55,805 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 01:41:55,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 01:41:55,805 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:55,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:55,806 INFO L82 PathProgramCache]: Analyzing trace with hash -886510538, now seen corresponding path program 1 times [2020-10-20 01:41:55,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:55,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617848363] [2020-10-20 01:41:55,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:55,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:55,909 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 01:41:55,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617848363] [2020-10-20 01:41:55,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:55,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 01:41:55,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156968562] [2020-10-20 01:41:55,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:41:55,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:55,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:41:55,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:41:55,912 INFO L87 Difference]: Start difference. First operand 71 states and 105 transitions. Second operand 3 states. [2020-10-20 01:41:55,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:55,939 INFO L93 Difference]: Finished difference Result 136 states and 204 transitions. [2020-10-20 01:41:55,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:41:55,940 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-20 01:41:55,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:55,941 INFO L225 Difference]: With dead ends: 136 [2020-10-20 01:41:55,941 INFO L226 Difference]: Without dead ends: 71 [2020-10-20 01:41:55,942 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 01:41:55,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-20 01:41:55,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-10-20 01:41:55,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-20 01:41:55,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 104 transitions. [2020-10-20 01:41:55,950 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 104 transitions. Word has length 22 [2020-10-20 01:41:55,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:55,951 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 104 transitions. [2020-10-20 01:41:55,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:41:55,951 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 104 transitions. [2020-10-20 01:41:55,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-20 01:41:55,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:55,952 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 01:41:55,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 01:41:55,953 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:55,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:55,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1823541737, now seen corresponding path program 1 times [2020-10-20 01:41:55,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:55,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912351273] [2020-10-20 01:41:55,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:55,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:56,028 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 01:41:56,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912351273] [2020-10-20 01:41:56,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:56,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:41:56,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515620418] [2020-10-20 01:41:56,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:41:56,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:56,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:41:56,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:41:56,031 INFO L87 Difference]: Start difference. First operand 71 states and 104 transitions. Second operand 3 states. [2020-10-20 01:41:56,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:56,080 INFO L93 Difference]: Finished difference Result 145 states and 214 transitions. [2020-10-20 01:41:56,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:41:56,081 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-20 01:41:56,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:56,082 INFO L225 Difference]: With dead ends: 145 [2020-10-20 01:41:56,082 INFO L226 Difference]: Without dead ends: 80 [2020-10-20 01:41:56,083 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 01:41:56,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-20 01:41:56,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2020-10-20 01:41:56,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-20 01:41:56,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 110 transitions. [2020-10-20 01:41:56,093 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 110 transitions. Word has length 25 [2020-10-20 01:41:56,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:56,093 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 110 transitions. [2020-10-20 01:41:56,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:41:56,094 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 110 transitions. [2020-10-20 01:41:56,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-20 01:41:56,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:56,095 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] [2020-10-20 01:41:56,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 01:41:56,096 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:56,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:56,096 INFO L82 PathProgramCache]: Analyzing trace with hash -920121944, now seen corresponding path program 1 times [2020-10-20 01:41:56,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:56,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600521792] [2020-10-20 01:41:56,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:56,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:56,167 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 01:41:56,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600521792] [2020-10-20 01:41:56,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:56,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:41:56,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378093653] [2020-10-20 01:41:56,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:41:56,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:56,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:41:56,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:41:56,169 INFO L87 Difference]: Start difference. First operand 78 states and 110 transitions. Second operand 5 states. [2020-10-20 01:41:56,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:56,279 INFO L93 Difference]: Finished difference Result 204 states and 285 transitions. [2020-10-20 01:41:56,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 01:41:56,281 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-10-20 01:41:56,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:56,283 INFO L225 Difference]: With dead ends: 204 [2020-10-20 01:41:56,283 INFO L226 Difference]: Without dead ends: 132 [2020-10-20 01:41:56,284 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 01:41:56,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-20 01:41:56,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 87. [2020-10-20 01:41:56,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-20 01:41:56,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 119 transitions. [2020-10-20 01:41:56,295 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 119 transitions. Word has length 31 [2020-10-20 01:41:56,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:56,295 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 119 transitions. [2020-10-20 01:41:56,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:41:56,296 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 119 transitions. [2020-10-20 01:41:56,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-20 01:41:56,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:56,297 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] [2020-10-20 01:41:56,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 01:41:56,298 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:56,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:56,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1742389099, now seen corresponding path program 1 times [2020-10-20 01:41:56,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:56,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110563551] [2020-10-20 01:41:56,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:56,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:56,367 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 01:41:56,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110563551] [2020-10-20 01:41:56,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:56,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:41:56,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180395439] [2020-10-20 01:41:56,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:41:56,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:56,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:41:56,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:41:56,370 INFO L87 Difference]: Start difference. First operand 87 states and 119 transitions. Second operand 5 states. [2020-10-20 01:41:56,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:56,501 INFO L93 Difference]: Finished difference Result 431 states and 600 transitions. [2020-10-20 01:41:56,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 01:41:56,502 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-10-20 01:41:56,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:56,504 INFO L225 Difference]: With dead ends: 431 [2020-10-20 01:41:56,505 INFO L226 Difference]: Without dead ends: 350 [2020-10-20 01:41:56,506 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 01:41:56,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2020-10-20 01:41:56,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 162. [2020-10-20 01:41:56,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-20 01:41:56,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 221 transitions. [2020-10-20 01:41:56,528 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 221 transitions. Word has length 31 [2020-10-20 01:41:56,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:56,529 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 221 transitions. [2020-10-20 01:41:56,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:41:56,529 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 221 transitions. [2020-10-20 01:41:56,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-20 01:41:56,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:56,531 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 01:41:56,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 01:41:56,531 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:56,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:56,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1092376181, now seen corresponding path program 1 times [2020-10-20 01:41:56,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:56,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284996653] [2020-10-20 01:41:56,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:56,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:56,624 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 01:41:56,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284996653] [2020-10-20 01:41:56,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:56,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:41:56,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896408100] [2020-10-20 01:41:56,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:41:56,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:56,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:41:56,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:41:56,629 INFO L87 Difference]: Start difference. First operand 162 states and 221 transitions. Second operand 5 states. [2020-10-20 01:41:56,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:56,963 INFO L93 Difference]: Finished difference Result 470 states and 642 transitions. [2020-10-20 01:41:56,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 01:41:56,963 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-10-20 01:41:56,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:56,969 INFO L225 Difference]: With dead ends: 470 [2020-10-20 01:41:56,969 INFO L226 Difference]: Without dead ends: 468 [2020-10-20 01:41:56,970 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 01:41:56,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2020-10-20 01:41:57,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 162. [2020-10-20 01:41:57,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-20 01:41:57,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 220 transitions. [2020-10-20 01:41:57,005 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 220 transitions. Word has length 32 [2020-10-20 01:41:57,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:57,006 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 220 transitions. [2020-10-20 01:41:57,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:41:57,006 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 220 transitions. [2020-10-20 01:41:57,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-20 01:41:57,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:57,010 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 01:41:57,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 01:41:57,010 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:57,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:57,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1963161872, now seen corresponding path program 1 times [2020-10-20 01:41:57,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:57,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099793015] [2020-10-20 01:41:57,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:57,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:57,090 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 01:41:57,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099793015] [2020-10-20 01:41:57,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:57,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:41:57,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637664431] [2020-10-20 01:41:57,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:41:57,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:57,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:41:57,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:41:57,093 INFO L87 Difference]: Start difference. First operand 162 states and 220 transitions. Second operand 5 states. [2020-10-20 01:41:57,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:57,210 INFO L93 Difference]: Finished difference Result 428 states and 574 transitions. [2020-10-20 01:41:57,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 01:41:57,210 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-10-20 01:41:57,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:57,212 INFO L225 Difference]: With dead ends: 428 [2020-10-20 01:41:57,212 INFO L226 Difference]: Without dead ends: 272 [2020-10-20 01:41:57,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-20 01:41:57,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-10-20 01:41:57,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 174. [2020-10-20 01:41:57,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-20 01:41:57,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 232 transitions. [2020-10-20 01:41:57,233 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 232 transitions. Word has length 32 [2020-10-20 01:41:57,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:57,233 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 232 transitions. [2020-10-20 01:41:57,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:41:57,234 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 232 transitions. [2020-10-20 01:41:57,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-20 01:41:57,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:57,240 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 01:41:57,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 01:41:57,241 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:57,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:57,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1704996434, now seen corresponding path program 1 times [2020-10-20 01:41:57,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:57,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61196476] [2020-10-20 01:41:57,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:57,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:57,303 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 01:41:57,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61196476] [2020-10-20 01:41:57,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:57,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:41:57,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743816148] [2020-10-20 01:41:57,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:41:57,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:57,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:41:57,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:41:57,306 INFO L87 Difference]: Start difference. First operand 174 states and 232 transitions. Second operand 3 states. [2020-10-20 01:41:57,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:57,350 INFO L93 Difference]: Finished difference Result 394 states and 524 transitions. [2020-10-20 01:41:57,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:41:57,351 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-20 01:41:57,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:57,352 INFO L225 Difference]: With dead ends: 394 [2020-10-20 01:41:57,352 INFO L226 Difference]: Without dead ends: 226 [2020-10-20 01:41:57,353 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 01:41:57,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-20 01:41:57,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-10-20 01:41:57,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-20 01:41:57,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 294 transitions. [2020-10-20 01:41:57,373 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 294 transitions. Word has length 32 [2020-10-20 01:41:57,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:57,373 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 294 transitions. [2020-10-20 01:41:57,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:41:57,374 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 294 transitions. [2020-10-20 01:41:57,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-20 01:41:57,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:57,376 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, 1, 1, 1] [2020-10-20 01:41:57,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 01:41:57,376 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:57,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:57,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1518924332, now seen corresponding path program 1 times [2020-10-20 01:41:57,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:57,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107986191] [2020-10-20 01:41:57,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:57,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:41:57,462 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:41:57,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:41:57,515 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:41:57,591 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 01:41:57,592 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 01:41:57,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-20 01:41:57,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 01:41:57 BoogieIcfgContainer [2020-10-20 01:41:57,761 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 01:41:57,762 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 01:41:57,762 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 01:41:57,763 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 01:41:57,763 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 01:41:57,773 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 01:41:57,923 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 01:41:57,923 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 01:41:57,927 INFO L168 Benchmark]: Toolchain (without parser) took 4940.92 ms. Allocated memory was 36.7 MB in the beginning and 81.8 MB in the end (delta: 45.1 MB). Free memory was 19.1 MB in the beginning and 33.8 MB in the end (delta: -14.8 MB). Peak memory consumption was 30.3 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:57,928 INFO L168 Benchmark]: CDTParser took 0.67 ms. Allocated memory is still 33.6 MB. Free memory was 12.0 MB in the beginning and 12.0 MB in the end (delta: 47.5 kB). Peak memory consumption was 47.5 kB. Max. memory is 14.3 GB. [2020-10-20 01:41:57,928 INFO L168 Benchmark]: CACSL2BoogieTranslator took 683.11 ms. Allocated memory was 36.7 MB in the beginning and 45.6 MB in the end (delta: 8.9 MB). Free memory was 18.3 MB in the beginning and 28.1 MB in the end (delta: -9.9 MB). Peak memory consumption was 17.6 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:57,928 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.66 ms. Allocated memory is still 45.6 MB. Free memory was 28.1 MB in the beginning and 22.8 MB in the end (delta: 5.3 MB). Peak memory consumption was 5.3 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:57,929 INFO L168 Benchmark]: Boogie Preprocessor took 62.89 ms. Allocated memory is still 45.6 MB. Free memory was 22.8 MB in the beginning and 19.0 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:57,930 INFO L168 Benchmark]: RCFGBuilder took 1249.30 ms. Allocated memory was 45.6 MB in the beginning and 53.5 MB in the end (delta: 7.9 MB). Free memory was 18.7 MB in the beginning and 16.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 13.5 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:57,930 INFO L168 Benchmark]: TraceAbstraction took 2691.54 ms. Allocated memory was 53.5 MB in the beginning and 81.8 MB in the end (delta: 28.3 MB). Free memory was 15.9 MB in the beginning and 50.1 MB in the end (delta: -34.3 MB). Peak memory consumption was 27.6 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:57,930 INFO L168 Benchmark]: Witness Printer took 160.75 ms. Allocated memory is still 81.8 MB. Free memory was 50.1 MB in the beginning and 33.8 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:57,933 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 33.6 MB. Free memory was 12.0 MB in the beginning and 12.0 MB in the end (delta: 47.5 kB). Peak memory consumption was 47.5 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 683.11 ms. Allocated memory was 36.7 MB in the beginning and 45.6 MB in the end (delta: 8.9 MB). Free memory was 18.3 MB in the beginning and 28.1 MB in the end (delta: -9.9 MB). Peak memory consumption was 17.6 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 81.66 ms. Allocated memory is still 45.6 MB. Free memory was 28.1 MB in the beginning and 22.8 MB in the end (delta: 5.3 MB). Peak memory consumption was 5.3 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 62.89 ms. Allocated memory is still 45.6 MB. Free memory was 22.8 MB in the beginning and 19.0 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 14.3 GB. * RCFGBuilder took 1249.30 ms. Allocated memory was 45.6 MB in the beginning and 53.5 MB in the end (delta: 7.9 MB). Free memory was 18.7 MB in the beginning and 16.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 13.5 MB. Max. memory is 14.3 GB. * TraceAbstraction took 2691.54 ms. Allocated memory was 53.5 MB in the beginning and 81.8 MB in the end (delta: 28.3 MB). Free memory was 15.9 MB in the beginning and 50.1 MB in the end (delta: -34.3 MB). Peak memory consumption was 27.6 MB. Max. memory is 14.3 GB. * Witness Printer took 160.75 ms. Allocated memory is still 81.8 MB. Free memory was 50.1 MB in the beginning and 33.8 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.3 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: [L42] int cleanupTimeShifts = 4; [L231] int pumpRunning = 0; [L232] int systemActive = 1; [L693] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L891] int waterLevel = 1; [L892] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L123] int retValue_acc ; [L124] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L489] int retValue_acc ; [L492] retValue_acc = 1 [L493] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L148] int splverifierCounter ; [L149] int tmp ; [L150] int tmp___0 ; [L151] int tmp___1 ; [L152] int tmp___2 ; [L155] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L157] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L159] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L165] tmp = __VERIFIER_nondet_int() [L167] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L909] COND TRUE waterLevel < 2 [L910] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L175] tmp___0 = __VERIFIER_nondet_int() [L177] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L921] COND FALSE !(\read(methaneLevelCritical)) [L924] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L185] tmp___2 = __VERIFIER_nondet_int() [L187] COND TRUE \read(tmp___2) [L458] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L239] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L246] COND TRUE \read(systemActive) [L320] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L323] COND FALSE !(\read(pumpRunning)) [L294] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L297] COND FALSE !(\read(pumpRunning)) [L268] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L271] COND TRUE ! pumpRunning [L417] int retValue_acc ; [L418] int tmp ; [L419] int tmp___0 ; [L971] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L974] COND FALSE !(waterLevel < 2) [L978] retValue_acc = 0 [L979] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L423] tmp = isHighWaterSensorDry() [L425] COND FALSE !(\read(tmp)) [L428] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L430] retValue_acc = tmp___0 [L431] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L273] tmp = isHighWaterLevel() [L275] COND TRUE \read(tmp) [L348] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L499] int tmp ; [L500] int tmp___0 ; [L930] int retValue_acc ; [L933] retValue_acc = methaneLevelCritical [L934] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L504] tmp = isMethaneLevelCritical() [L506] COND TRUE \read(tmp) [L372] int retValue_acc ; [L375] retValue_acc = pumpRunning [L376] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L508] tmp___0 = isPumpRunning() [L510] 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_product54.cil.c", 3, "reach_error") VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 192 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.4s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1137 SDtfs, 1257 SDslu, 1252 SDs, 0 SdLazy, 196 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 639 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 271 NumberOfCodeBlocks, 271 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 229 ConstructedInterpolants, 0 QuantifiedInterpolants, 12403 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...