./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 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_1.5.800.v20200727-1323.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_spec4_product39.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 944b52f1c750b2b149a29532cc6e317483d681a8 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-25 23:07:29,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 23:07:29,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 23:07:29,614 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 23:07:29,615 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 23:07:29,617 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 23:07:29,618 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 23:07:29,621 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 23:07:29,623 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 23:07:29,624 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 23:07:29,625 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 23:07:29,627 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 23:07:29,628 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 23:07:29,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 23:07:29,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 23:07:29,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 23:07:29,633 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 23:07:29,634 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 23:07:29,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 23:07:29,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 23:07:29,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 23:07:29,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 23:07:29,643 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 23:07:29,644 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 23:07:29,653 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 23:07:29,653 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 23:07:29,654 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 23:07:29,655 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 23:07:29,657 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 23:07:29,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 23:07:29,658 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 23:07:29,659 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 23:07:29,660 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 23:07:29,661 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 23:07:29,662 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 23:07:29,663 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 23:07:29,663 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 23:07:29,664 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 23:07:29,664 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 23:07:29,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 23:07:29,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 23:07:29,676 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 23:07:29,702 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 23:07:29,703 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 23:07:29,704 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 23:07:29,704 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 23:07:29,704 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 23:07:29,705 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 23:07:29,705 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 23:07:29,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 23:07:29,706 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 23:07:29,706 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 23:07:29,706 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 23:07:29,706 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 23:07:29,706 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 23:07:29,707 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 23:07:29,707 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 23:07:29,707 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 23:07:29,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 23:07:29,708 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 23:07:29,708 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 23:07:29,708 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 23:07:29,708 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 23:07:29,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 23:07:29,709 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 23:07:29,709 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 23:07:29,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 23:07:29,710 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 23:07:29,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 23:07:29,710 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 23:07:29,710 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 23:07:29,711 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 944b52f1c750b2b149a29532cc6e317483d681a8 [2020-10-25 23:07:30,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 23:07:30,115 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 23:07:30,120 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 23:07:30,122 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 23:07:30,124 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 23:07:30,125 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c [2020-10-25 23:07:30,215 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c70e8e07/4a35da390406476fb26c81303f070640/FLAG0a22a4c58 [2020-10-25 23:07:30,962 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 23:07:30,963 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c [2020-10-25 23:07:30,985 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c70e8e07/4a35da390406476fb26c81303f070640/FLAG0a22a4c58 [2020-10-25 23:07:31,232 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c70e8e07/4a35da390406476fb26c81303f070640 [2020-10-25 23:07:31,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 23:07:31,243 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 23:07:31,249 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 23:07:31,250 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 23:07:31,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 23:07:31,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 11:07:31" (1/1) ... [2020-10-25 23:07:31,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38bc7a2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:07:31, skipping insertion in model container [2020-10-25 23:07:31,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 11:07:31" (1/1) ... [2020-10-25 23:07:31,267 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 23:07:31,351 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 23:07:31,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 23:07:31,666 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 23:07:31,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 23:07:31,784 INFO L208 MainTranslator]: Completed translation [2020-10-25 23:07:31,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:07:31 WrapperNode [2020-10-25 23:07:31,785 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 23:07:31,786 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 23:07:31,787 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 23:07:31,787 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 23:07:31,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:07:31" (1/1) ... [2020-10-25 23:07:31,814 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:07:31" (1/1) ... [2020-10-25 23:07:31,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 23:07:31,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 23:07:31,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 23:07:31,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 23:07:31,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:07:31" (1/1) ... [2020-10-25 23:07:31,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:07:31" (1/1) ... [2020-10-25 23:07:31,875 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:07:31" (1/1) ... [2020-10-25 23:07:31,875 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:07:31" (1/1) ... [2020-10-25 23:07:31,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:07:31" (1/1) ... [2020-10-25 23:07:31,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:07:31" (1/1) ... [2020-10-25 23:07:31,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:07:31" (1/1) ... [2020-10-25 23:07:31,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 23:07:31,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 23:07:31,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 23:07:31,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 23:07:31,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:07:31" (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 [2020-10-25 23:07:32,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 23:07:32,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 23:07:32,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 23:07:32,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 23:07:32,954 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 23:07:32,955 INFO L298 CfgBuilder]: Removed 166 assume(true) statements. [2020-10-25 23:07:32,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 11:07:32 BoogieIcfgContainer [2020-10-25 23:07:32,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 23:07:32,958 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 23:07:32,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 23:07:32,962 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 23:07:32,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 11:07:31" (1/3) ... [2020-10-25 23:07:32,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@172a2f5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 11:07:32, skipping insertion in model container [2020-10-25 23:07:32,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:07:31" (2/3) ... [2020-10-25 23:07:32,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@172a2f5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 11:07:32, skipping insertion in model container [2020-10-25 23:07:32,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 11:07:32" (3/3) ... [2020-10-25 23:07:32,966 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product39.cil.c [2020-10-25 23:07:32,978 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 23:07:32,983 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-25 23:07:32,996 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-25 23:07:33,030 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 23:07:33,030 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 23:07:33,031 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 23:07:33,031 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 23:07:33,031 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 23:07:33,031 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 23:07:33,032 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 23:07:33,032 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 23:07:33,050 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states. [2020-10-25 23:07:33,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-25 23:07:33,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:07:33,057 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 23:07:33,058 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:07:33,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:07:33,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1368208383, now seen corresponding path program 1 times [2020-10-25 23:07:33,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:07:33,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478693137] [2020-10-25 23:07:33,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:07:33,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:07:33,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:07:33,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478693137] [2020-10-25 23:07:33,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:07:33,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 23:07:33,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009928865] [2020-10-25 23:07:33,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 23:07:33,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:07:33,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 23:07:33,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 23:07:33,432 INFO L87 Difference]: Start difference. First operand 116 states. Second operand 2 states. [2020-10-25 23:07:33,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:07:33,496 INFO L93 Difference]: Finished difference Result 223 states and 338 transitions. [2020-10-25 23:07:33,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 23:07:33,499 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-10-25 23:07:33,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:07:33,515 INFO L225 Difference]: With dead ends: 223 [2020-10-25 23:07:33,516 INFO L226 Difference]: Without dead ends: 109 [2020-10-25 23:07:33,520 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 [2020-10-25 23:07:33,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-25 23:07:33,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-10-25 23:07:33,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-25 23:07:33,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 159 transitions. [2020-10-25 23:07:33,570 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 159 transitions. Word has length 16 [2020-10-25 23:07:33,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:07:33,570 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 159 transitions. [2020-10-25 23:07:33,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 23:07:33,571 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 159 transitions. [2020-10-25 23:07:33,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-25 23:07:33,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:07:33,572 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 23:07:33,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 23:07:33,573 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:07:33,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:07:33,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1880002016, now seen corresponding path program 1 times [2020-10-25 23:07:33,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:07:33,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705778876] [2020-10-25 23:07:33,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:07:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:07:33,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:07:33,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705778876] [2020-10-25 23:07:33,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:07:33,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 23:07:33,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029832808] [2020-10-25 23:07:33,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 23:07:33,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:07:33,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 23:07:33,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 23:07:33,682 INFO L87 Difference]: Start difference. First operand 109 states and 159 transitions. Second operand 3 states. [2020-10-25 23:07:33,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:07:33,695 INFO L93 Difference]: Finished difference Result 109 states and 159 transitions. [2020-10-25 23:07:33,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 23:07:33,696 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-25 23:07:33,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:07:33,697 INFO L225 Difference]: With dead ends: 109 [2020-10-25 23:07:33,697 INFO L226 Difference]: Without dead ends: 47 [2020-10-25 23:07:33,699 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 [2020-10-25 23:07:33,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-25 23:07:33,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-25 23:07:33,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-25 23:07:33,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 68 transitions. [2020-10-25 23:07:33,705 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 68 transitions. Word has length 17 [2020-10-25 23:07:33,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:07:33,706 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 68 transitions. [2020-10-25 23:07:33,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 23:07:33,706 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 68 transitions. [2020-10-25 23:07:33,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-25 23:07:33,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:07:33,708 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] [2020-10-25 23:07:33,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 23:07:33,708 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:07:33,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:07:33,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1744081540, now seen corresponding path program 1 times [2020-10-25 23:07:33,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:07:33,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208482770] [2020-10-25 23:07:33,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:07:33,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:07:33,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:07:33,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208482770] [2020-10-25 23:07:33,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:07:33,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-25 23:07:33,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122331349] [2020-10-25 23:07:33,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-25 23:07:33,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:07:33,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-25 23:07:33,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-25 23:07:33,827 INFO L87 Difference]: Start difference. First operand 47 states and 68 transitions. Second operand 6 states. [2020-10-25 23:07:34,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:07:34,013 INFO L93 Difference]: Finished difference Result 152 states and 226 transitions. [2020-10-25 23:07:34,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-25 23:07:34,014 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-25 23:07:34,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:07:34,016 INFO L225 Difference]: With dead ends: 152 [2020-10-25 23:07:34,016 INFO L226 Difference]: Without dead ends: 111 [2020-10-25 23:07:34,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-25 23:07:34,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-25 23:07:34,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 66. [2020-10-25 23:07:34,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-25 23:07:34,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 97 transitions. [2020-10-25 23:07:34,029 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 97 transitions. Word has length 22 [2020-10-25 23:07:34,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:07:34,029 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 97 transitions. [2020-10-25 23:07:34,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-25 23:07:34,029 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 97 transitions. [2020-10-25 23:07:34,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-25 23:07:34,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:07:34,031 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 23:07:34,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-25 23:07:34,031 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:07:34,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:07:34,032 INFO L82 PathProgramCache]: Analyzing trace with hash -595366227, now seen corresponding path program 1 times [2020-10-25 23:07:34,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:07:34,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938043691] [2020-10-25 23:07:34,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:07:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:07:34,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:07:34,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938043691] [2020-10-25 23:07:34,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:07:34,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 23:07:34,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208258696] [2020-10-25 23:07:34,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 23:07:34,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:07:34,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 23:07:34,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 23:07:34,097 INFO L87 Difference]: Start difference. First operand 66 states and 97 transitions. Second operand 3 states. [2020-10-25 23:07:34,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:07:34,143 INFO L93 Difference]: Finished difference Result 147 states and 218 transitions. [2020-10-25 23:07:34,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 23:07:34,144 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-25 23:07:34,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:07:34,145 INFO L225 Difference]: With dead ends: 147 [2020-10-25 23:07:34,145 INFO L226 Difference]: Without dead ends: 87 [2020-10-25 23:07:34,146 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 [2020-10-25 23:07:34,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-25 23:07:34,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2020-10-25 23:07:34,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-25 23:07:34,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 121 transitions. [2020-10-25 23:07:34,158 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 121 transitions. Word has length 24 [2020-10-25 23:07:34,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:07:34,159 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 121 transitions. [2020-10-25 23:07:34,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 23:07:34,159 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 121 transitions. [2020-10-25 23:07:34,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-25 23:07:34,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:07:34,160 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] [2020-10-25 23:07:34,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-25 23:07:34,161 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:07:34,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:07:34,161 INFO L82 PathProgramCache]: Analyzing trace with hash 566175321, now seen corresponding path program 1 times [2020-10-25 23:07:34,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:07:34,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476323034] [2020-10-25 23:07:34,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:07:34,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:07:34,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:07:34,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476323034] [2020-10-25 23:07:34,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:07:34,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 23:07:34,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474735994] [2020-10-25 23:07:34,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 23:07:34,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:07:34,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 23:07:34,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 23:07:34,320 INFO L87 Difference]: Start difference. First operand 85 states and 121 transitions. Second operand 5 states. [2020-10-25 23:07:34,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:07:34,444 INFO L93 Difference]: Finished difference Result 301 states and 436 transitions. [2020-10-25 23:07:34,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-25 23:07:34,447 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-25 23:07:34,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:07:34,449 INFO L225 Difference]: With dead ends: 301 [2020-10-25 23:07:34,449 INFO L226 Difference]: Without dead ends: 222 [2020-10-25 23:07:34,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-25 23:07:34,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-25 23:07:34,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 144. [2020-10-25 23:07:34,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-25 23:07:34,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 200 transitions. [2020-10-25 23:07:34,477 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 200 transitions. Word has length 25 [2020-10-25 23:07:34,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:07:34,477 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 200 transitions. [2020-10-25 23:07:34,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 23:07:34,478 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 200 transitions. [2020-10-25 23:07:34,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-25 23:07:34,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:07:34,479 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] [2020-10-25 23:07:34,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-25 23:07:34,479 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:07:34,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:07:34,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1393133669, now seen corresponding path program 1 times [2020-10-25 23:07:34,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:07:34,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034724689] [2020-10-25 23:07:34,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:07:34,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:07:34,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:07:34,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034724689] [2020-10-25 23:07:34,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:07:34,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 23:07:34,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637834969] [2020-10-25 23:07:34,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 23:07:34,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:07:34,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 23:07:34,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 23:07:34,543 INFO L87 Difference]: Start difference. First operand 144 states and 200 transitions. Second operand 5 states. [2020-10-25 23:07:34,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:07:34,672 INFO L93 Difference]: Finished difference Result 297 states and 421 transitions. [2020-10-25 23:07:34,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-25 23:07:34,672 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-10-25 23:07:34,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:07:34,674 INFO L225 Difference]: With dead ends: 297 [2020-10-25 23:07:34,674 INFO L226 Difference]: Without dead ends: 295 [2020-10-25 23:07:34,675 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 [2020-10-25 23:07:34,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-10-25 23:07:34,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 144. [2020-10-25 23:07:34,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-25 23:07:34,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 198 transitions. [2020-10-25 23:07:34,694 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 198 transitions. Word has length 26 [2020-10-25 23:07:34,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:07:34,694 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 198 transitions. [2020-10-25 23:07:34,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 23:07:34,694 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 198 transitions. [2020-10-25 23:07:34,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-25 23:07:34,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:07:34,696 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] [2020-10-25 23:07:34,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-25 23:07:34,696 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:07:34,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:07:34,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1756729668, now seen corresponding path program 1 times [2020-10-25 23:07:34,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:07:34,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467149602] [2020-10-25 23:07:34,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:07:34,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:07:34,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:07:34,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467149602] [2020-10-25 23:07:34,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:07:34,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 23:07:34,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188222363] [2020-10-25 23:07:34,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 23:07:34,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:07:34,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 23:07:34,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-25 23:07:34,749 INFO L87 Difference]: Start difference. First operand 144 states and 198 transitions. Second operand 4 states. [2020-10-25 23:07:34,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:07:34,941 INFO L93 Difference]: Finished difference Result 295 states and 413 transitions. [2020-10-25 23:07:34,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 23:07:34,942 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-25 23:07:34,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:07:34,943 INFO L225 Difference]: With dead ends: 295 [2020-10-25 23:07:34,943 INFO L226 Difference]: Without dead ends: 216 [2020-10-25 23:07:34,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-25 23:07:34,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-25 23:07:34,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 213. [2020-10-25 23:07:34,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-10-25 23:07:34,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 293 transitions. [2020-10-25 23:07:34,963 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 293 transitions. Word has length 31 [2020-10-25 23:07:34,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:07:34,964 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 293 transitions. [2020-10-25 23:07:34,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 23:07:34,964 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 293 transitions. [2020-10-25 23:07:34,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-25 23:07:34,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:07:34,966 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] [2020-10-25 23:07:34,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-25 23:07:34,967 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:07:34,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:07:34,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1498564230, now seen corresponding path program 1 times [2020-10-25 23:07:34,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:07:34,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658502307] [2020-10-25 23:07:34,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:07:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:07:35,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:07:35,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658502307] [2020-10-25 23:07:35,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:07:35,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 23:07:35,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535133507] [2020-10-25 23:07:35,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 23:07:35,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:07:35,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 23:07:35,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-25 23:07:35,018 INFO L87 Difference]: Start difference. First operand 213 states and 293 transitions. Second operand 4 states. [2020-10-25 23:07:35,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:07:35,088 INFO L93 Difference]: Finished difference Result 635 states and 886 transitions. [2020-10-25 23:07:35,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-25 23:07:35,089 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-25 23:07:35,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:07:35,092 INFO L225 Difference]: With dead ends: 635 [2020-10-25 23:07:35,093 INFO L226 Difference]: Without dead ends: 486 [2020-10-25 23:07:35,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-25 23:07:35,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2020-10-25 23:07:35,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 213. [2020-10-25 23:07:35,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-10-25 23:07:35,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 291 transitions. [2020-10-25 23:07:35,125 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 291 transitions. Word has length 31 [2020-10-25 23:07:35,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:07:35,126 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 291 transitions. [2020-10-25 23:07:35,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 23:07:35,126 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 291 transitions. [2020-10-25 23:07:35,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-25 23:07:35,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:07:35,128 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] [2020-10-25 23:07:35,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-25 23:07:35,128 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:07:35,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:07:35,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1891591240, now seen corresponding path program 1 times [2020-10-25 23:07:35,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:07:35,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990030840] [2020-10-25 23:07:35,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:07:35,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:07:35,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:07:35,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990030840] [2020-10-25 23:07:35,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:07:35,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-25 23:07:35,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300073762] [2020-10-25 23:07:35,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 23:07:35,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:07:35,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 23:07:35,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 23:07:35,186 INFO L87 Difference]: Start difference. First operand 213 states and 291 transitions. Second operand 5 states. [2020-10-25 23:07:35,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:07:35,343 INFO L93 Difference]: Finished difference Result 460 states and 638 transitions. [2020-10-25 23:07:35,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-25 23:07:35,344 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-10-25 23:07:35,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:07:35,347 INFO L225 Difference]: With dead ends: 460 [2020-10-25 23:07:35,347 INFO L226 Difference]: Without dead ends: 311 [2020-10-25 23:07:35,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-25 23:07:35,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-10-25 23:07:35,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 239. [2020-10-25 23:07:35,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-10-25 23:07:35,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 329 transitions. [2020-10-25 23:07:35,379 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 329 transitions. Word has length 31 [2020-10-25 23:07:35,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:07:35,380 INFO L481 AbstractCegarLoop]: Abstraction has 239 states and 329 transitions. [2020-10-25 23:07:35,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 23:07:35,380 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 329 transitions. [2020-10-25 23:07:35,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-25 23:07:35,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:07:35,383 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 23:07:35,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-25 23:07:35,384 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:07:35,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:07:35,384 INFO L82 PathProgramCache]: Analyzing trace with hash 728455000, now seen corresponding path program 1 times [2020-10-25 23:07:35,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:07:35,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994636592] [2020-10-25 23:07:35,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:07:35,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:07:35,448 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-25 23:07:35,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994636592] [2020-10-25 23:07:35,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:07:35,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-25 23:07:35,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092349722] [2020-10-25 23:07:35,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 23:07:35,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:07:35,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 23:07:35,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 23:07:35,451 INFO L87 Difference]: Start difference. First operand 239 states and 329 transitions. Second operand 5 states. [2020-10-25 23:07:35,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:07:35,549 INFO L93 Difference]: Finished difference Result 733 states and 1010 transitions. [2020-10-25 23:07:35,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-25 23:07:35,549 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-10-25 23:07:35,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:07:35,553 INFO L225 Difference]: With dead ends: 733 [2020-10-25 23:07:35,553 INFO L226 Difference]: Without dead ends: 500 [2020-10-25 23:07:35,554 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 [2020-10-25 23:07:35,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-10-25 23:07:35,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 248. [2020-10-25 23:07:35,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-10-25 23:07:35,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 338 transitions. [2020-10-25 23:07:35,585 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 338 transitions. Word has length 49 [2020-10-25 23:07:35,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:07:35,585 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 338 transitions. [2020-10-25 23:07:35,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 23:07:35,586 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 338 transitions. [2020-10-25 23:07:35,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-25 23:07:35,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:07:35,587 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 23:07:35,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-25 23:07:35,588 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:07:35,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:07:35,588 INFO L82 PathProgramCache]: Analyzing trace with hash 2114658394, now seen corresponding path program 1 times [2020-10-25 23:07:35,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:07:35,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487999484] [2020-10-25 23:07:35,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:07:35,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:07:35,655 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-25 23:07:35,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487999484] [2020-10-25 23:07:35,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:07:35,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-25 23:07:35,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732160335] [2020-10-25 23:07:35,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-25 23:07:35,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:07:35,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-25 23:07:35,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-25 23:07:35,658 INFO L87 Difference]: Start difference. First operand 248 states and 338 transitions. Second operand 6 states. [2020-10-25 23:07:35,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:07:35,753 INFO L93 Difference]: Finished difference Result 584 states and 796 transitions. [2020-10-25 23:07:35,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-25 23:07:35,753 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-10-25 23:07:35,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:07:35,756 INFO L225 Difference]: With dead ends: 584 [2020-10-25 23:07:35,756 INFO L226 Difference]: Without dead ends: 342 [2020-10-25 23:07:35,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-25 23:07:35,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-10-25 23:07:35,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 216. [2020-10-25 23:07:35,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-25 23:07:35,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 288 transitions. [2020-10-25 23:07:35,785 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 288 transitions. Word has length 49 [2020-10-25 23:07:35,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:07:35,785 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 288 transitions. [2020-10-25 23:07:35,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-25 23:07:35,785 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 288 transitions. [2020-10-25 23:07:35,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-25 23:07:35,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:07:35,786 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 23:07:35,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-25 23:07:35,787 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:07:35,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:07:35,788 INFO L82 PathProgramCache]: Analyzing trace with hash 451206174, now seen corresponding path program 1 times [2020-10-25 23:07:35,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:07:35,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401193015] [2020-10-25 23:07:35,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:07:35,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:07:35,870 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:07:35,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401193015] [2020-10-25 23:07:35,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118342188] [2020-10-25 23:07:35,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 23:07:36,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:07:36,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-25 23:07:36,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 23:07:36,087 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:07:36,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 23:07:36,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-10-25 23:07:36,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866710925] [2020-10-25 23:07:36,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-25 23:07:36,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:07:36,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-25 23:07:36,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-25 23:07:36,090 INFO L87 Difference]: Start difference. First operand 216 states and 288 transitions. Second operand 6 states. [2020-10-25 23:07:36,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:07:36,396 INFO L93 Difference]: Finished difference Result 608 states and 825 transitions. [2020-10-25 23:07:36,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-25 23:07:36,397 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-10-25 23:07:36,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:07:36,401 INFO L225 Difference]: With dead ends: 608 [2020-10-25 23:07:36,401 INFO L226 Difference]: Without dead ends: 446 [2020-10-25 23:07:36,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-10-25 23:07:36,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2020-10-25 23:07:36,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 262. [2020-10-25 23:07:36,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-25 23:07:36,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 349 transitions. [2020-10-25 23:07:36,442 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 349 transitions. Word has length 50 [2020-10-25 23:07:36,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:07:36,443 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 349 transitions. [2020-10-25 23:07:36,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-25 23:07:36,444 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 349 transitions. [2020-10-25 23:07:36,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-25 23:07:36,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:07:36,446 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 23:07:36,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-10-25 23:07:36,661 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:07:36,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:07:36,662 INFO L82 PathProgramCache]: Analyzing trace with hash -992737800, now seen corresponding path program 2 times [2020-10-25 23:07:36,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:07:36,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852629236] [2020-10-25 23:07:36,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:07:36,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 23:07:36,745 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 23:07:36,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 23:07:36,816 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 23:07:36,879 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 23:07:36,879 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 23:07:36,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-25 23:07:37,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 11:07:37 BoogieIcfgContainer [2020-10-25 23:07:37,051 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 23:07:37,051 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 23:07:37,052 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 23:07:37,052 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 23:07:37,052 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 11:07:32" (3/4) ... [2020-10-25 23:07:37,055 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 23:07:37,244 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 23:07:37,245 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 23:07:37,248 INFO L168 Benchmark]: Toolchain (without parser) took 6009.55 ms. Allocated memory was 41.9 MB in the beginning and 111.1 MB in the end (delta: 69.2 MB). Free memory was 19.2 MB in the beginning and 73.1 MB in the end (delta: -53.9 MB). Peak memory consumption was 64.9 MB. Max. memory is 16.1 GB. [2020-10-25 23:07:37,249 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 41.9 MB. Free memory was 22.7 MB in the beginning and 22.7 MB in the end (delta: 33.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 23:07:37,252 INFO L168 Benchmark]: CACSL2BoogieTranslator took 536.08 ms. Allocated memory was 41.9 MB in the beginning and 52.4 MB in the end (delta: 10.5 MB). Free memory was 18.5 MB in the beginning and 28.5 MB in the end (delta: -9.9 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. [2020-10-25 23:07:37,253 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.58 ms. Allocated memory is still 52.4 MB. Free memory was 28.5 MB in the beginning and 24.9 MB in the end (delta: 3.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 23:07:37,253 INFO L168 Benchmark]: Boogie Preprocessor took 66.88 ms. Allocated memory is still 52.4 MB. Free memory was 24.9 MB in the beginning and 35.6 MB in the end (delta: -10.6 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-10-25 23:07:37,254 INFO L168 Benchmark]: RCFGBuilder took 1026.47 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 35.6 MB in the beginning and 29.0 MB in the end (delta: 6.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.1 GB. [2020-10-25 23:07:37,254 INFO L168 Benchmark]: TraceAbstraction took 4092.44 ms. Allocated memory was 62.9 MB in the beginning and 111.1 MB in the end (delta: 48.2 MB). Free memory was 28.6 MB in the beginning and 46.6 MB in the end (delta: -17.9 MB). Peak memory consumption was 30.0 MB. Max. memory is 16.1 GB. [2020-10-25 23:07:37,257 INFO L168 Benchmark]: Witness Printer took 194.46 ms. Allocated memory is still 111.1 MB. Free memory was 46.6 MB in the beginning and 73.1 MB in the end (delta: -26.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-10-25 23:07:37,260 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 41.9 MB. Free memory was 22.7 MB in the beginning and 22.7 MB in the end (delta: 33.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 536.08 ms. Allocated memory was 41.9 MB in the beginning and 52.4 MB in the end (delta: 10.5 MB). Free memory was 18.5 MB in the beginning and 28.5 MB in the end (delta: -9.9 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 72.58 ms. Allocated memory is still 52.4 MB. Free memory was 28.5 MB in the beginning and 24.9 MB in the end (delta: 3.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 66.88 ms. Allocated memory is still 52.4 MB. Free memory was 24.9 MB in the beginning and 35.6 MB in the end (delta: -10.6 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1026.47 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 35.6 MB in the beginning and 29.0 MB in the end (delta: 6.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4092.44 ms. Allocated memory was 62.9 MB in the beginning and 111.1 MB in the end (delta: 48.2 MB). Free memory was 28.6 MB in the beginning and 46.6 MB in the end (delta: -17.9 MB). Peak memory consumption was 30.0 MB. Max. memory is 16.1 GB. * Witness Printer took 194.46 ms. Allocated memory is still 111.1 MB. Free memory was 46.6 MB in the beginning and 73.1 MB in the end (delta: -26.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L249] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L526] int pumpRunning = 0; [L527] int systemActive = 1; [L730] int waterLevel = 1; [L731] int methaneLevelCritical = 0; [L824] int cleanupTimeShifts = 4; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L897] int retValue_acc ; [L898] 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] [L904] tmp = valid_product() [L906] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L452] int splverifierCounter ; [L453] int tmp ; [L454] int tmp___0 ; [L455] int tmp___1 ; [L456] int tmp___2 ; [L459] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L461] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L463] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L469] tmp = __VERIFIER_nondet_int() [L471] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L748] COND TRUE waterLevel < 2 [L749] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L479] tmp___0 = __VERIFIER_nondet_int() [L481] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L489] tmp___2 = __VERIFIER_nondet_int() [L491] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L534] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L541] COND TRUE \read(systemActive) [L589] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L592] COND FALSE !(\read(pumpRunning)) [L563] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L566] COND TRUE ! pumpRunning [L686] int retValue_acc ; [L687] int tmp ; [L688] int tmp___0 ; [L810] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L813] COND FALSE !(waterLevel < 2) [L817] retValue_acc = 0 [L818] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L692] tmp = isHighWaterSensorDry() [L694] COND FALSE !(\read(tmp)) [L697] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L699] retValue_acc = tmp___0 [L700] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L568] tmp = isHighWaterLevel() [L570] COND TRUE \read(tmp) [L617] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L921] int tmp ; [L922] int tmp___0 ; [L801] int retValue_acc ; [L804] retValue_acc = waterLevel [L805] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L926] tmp = getWaterLevel() [L928] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L461] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L463] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L469] tmp = __VERIFIER_nondet_int() [L471] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L479] tmp___0 = __VERIFIER_nondet_int() [L481] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L489] tmp___2 = __VERIFIER_nondet_int() [L491] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L534] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L736] COND TRUE waterLevel > 0 [L737] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L541] COND TRUE \read(systemActive) [L589] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L592] COND TRUE \read(pumpRunning) [L630] int retValue_acc ; [L769] int retValue_acc ; [L772] retValue_acc = methaneLevelCritical [L773] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L634] retValue_acc = isMethaneLevelCritical() [L636] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L594] tmp = isMethaneAlarm() [L596] COND FALSE !(\read(tmp)) [L563] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L566] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L921] int tmp ; [L922] int tmp___0 ; [L801] int retValue_acc ; [L804] retValue_acc = waterLevel [L805] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L926] tmp = getWaterLevel() [L928] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L461] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L463] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L469] tmp = __VERIFIER_nondet_int() [L471] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L479] tmp___0 = __VERIFIER_nondet_int() [L481] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L489] tmp___2 = __VERIFIER_nondet_int() [L491] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L534] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L736] COND TRUE waterLevel > 0 [L737] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L541] COND TRUE \read(systemActive) [L589] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L592] COND TRUE \read(pumpRunning) [L630] int retValue_acc ; [L769] int retValue_acc ; [L772] retValue_acc = methaneLevelCritical [L773] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L634] retValue_acc = isMethaneLevelCritical() [L636] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L594] tmp = isMethaneAlarm() [L596] COND FALSE !(\read(tmp)) [L563] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L566] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L921] int tmp ; [L922] int tmp___0 ; [L801] int retValue_acc ; [L804] retValue_acc = waterLevel [L805] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L926] tmp = getWaterLevel() [L928] COND TRUE tmp == 0 [L641] int retValue_acc ; [L644] retValue_acc = pumpRunning [L645] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L930] tmp___0 = isPumpRunning() [L932] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L3] __assert_fail("0", "minepump_spec4_product39.cil.c", 3, "reach_error") VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 116 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.8s, OverallIterations: 13, TraceHistogramMax: 3, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1314 SDtfs, 1698 SDslu, 2060 SDs, 0 SdLazy, 309 SolverSat, 70 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 132 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=262occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 1186 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 490 NumberOfCodeBlocks, 490 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 408 ConstructedInterpolants, 0 QuantifiedInterpolants, 26477 SizeOfPredicates, 4 NumberOfNonLiveVariables, 416 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 13 InterpolantComputations, 11 PerfectInterpolantSequences, 50/56 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...