./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/drift_tenth.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ee8e70e7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/drift_tenth.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/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 15f6de5d900b1c6bf3c8f60c8cfdb35df3f7d854 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/drift_tenth.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/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 15f6de5d900b1c6bf3c8f60c8cfdb35df3f7d854 ........................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") --- Real Ultimate output --- This is Ultimate 0.2.0-ee8e70e [2020-10-24 14:18:33,880 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 14:18:33,885 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 14:18:33,925 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 14:18:33,925 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 14:18:33,927 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 14:18:33,929 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 14:18:33,931 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 14:18:33,933 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 14:18:33,934 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 14:18:33,935 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 14:18:33,937 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 14:18:33,938 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 14:18:33,939 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 14:18:33,940 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 14:18:33,942 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 14:18:33,943 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 14:18:33,953 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 14:18:33,958 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 14:18:33,965 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 14:18:33,970 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 14:18:33,972 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 14:18:33,973 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 14:18:33,974 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 14:18:33,982 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 14:18:33,983 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 14:18:33,983 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 14:18:33,984 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 14:18:33,984 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 14:18:33,989 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 14:18:33,989 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 14:18:33,990 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 14:18:33,991 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 14:18:33,992 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 14:18:33,997 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 14:18:33,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 14:18:33,998 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 14:18:33,999 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 14:18:33,999 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 14:18:34,000 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 14:18:34,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 14:18:34,003 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 14:18:34,053 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 14:18:34,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 14:18:34,055 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 14:18:34,056 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 14:18:34,056 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 14:18:34,057 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 14:18:34,057 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 14:18:34,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 14:18:34,057 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 14:18:34,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 14:18:34,058 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 14:18:34,058 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 14:18:34,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 14:18:34,059 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 14:18:34,059 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 14:18:34,059 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 14:18:34,059 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 14:18:34,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 14:18:34,060 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 14:18:34,060 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 14:18:34,060 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 14:18:34,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 14:18:34,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 14:18:34,061 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 14:18:34,061 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 14:18:34,061 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 14:18:34,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 14:18:34,061 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 14:18:34,062 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 14:18:34,062 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 15f6de5d900b1c6bf3c8f60c8cfdb35df3f7d854 [2020-10-24 14:18:34,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 14:18:34,490 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 14:18:34,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 14:18:34,495 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 14:18:34,497 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 14:18:34,498 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/drift_tenth.c [2020-10-24 14:18:34,569 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/361e3927a/09c7fa42521a440dbc70da5eb71599d0/FLAG410d23ce8 [2020-10-24 14:18:35,074 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 14:18:35,075 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/float-benchs/drift_tenth.c [2020-10-24 14:18:35,083 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/361e3927a/09c7fa42521a440dbc70da5eb71599d0/FLAG410d23ce8 [2020-10-24 14:18:35,459 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/361e3927a/09c7fa42521a440dbc70da5eb71599d0 [2020-10-24 14:18:35,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 14:18:35,471 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 14:18:35,476 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 14:18:35,476 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 14:18:35,480 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 14:18:35,481 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:18:35" (1/1) ... [2020-10-24 14:18:35,489 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50bb1bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:35, skipping insertion in model container [2020-10-24 14:18:35,490 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:18:35" (1/1) ... [2020-10-24 14:18:35,499 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 14:18:35,516 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 14:18:35,736 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 14:18:35,746 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 14:18:35,764 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 14:18:35,781 INFO L217 MainTranslator]: Completed translation [2020-10-24 14:18:35,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:35 WrapperNode [2020-10-24 14:18:35,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 14:18:35,784 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 14:18:35,784 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 14:18:35,784 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 14:18:35,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:35" (1/1) ... [2020-10-24 14:18:35,801 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:35" (1/1) ... [2020-10-24 14:18:35,821 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 14:18:35,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 14:18:35,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 14:18:35,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 14:18:35,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:35" (1/1) ... [2020-10-24 14:18:35,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:35" (1/1) ... [2020-10-24 14:18:35,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:35" (1/1) ... [2020-10-24 14:18:35,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:35" (1/1) ... [2020-10-24 14:18:35,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:35" (1/1) ... [2020-10-24 14:18:35,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:35" (1/1) ... [2020-10-24 14:18:35,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:35" (1/1) ... [2020-10-24 14:18:35,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 14:18:35,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 14:18:35,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 14:18:35,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 14:18:35,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 14:18:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 14:18:35,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 14:18:35,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 14:18:35,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 14:18:36,397 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 14:18:36,397 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-24 14:18:36,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:18:36 BoogieIcfgContainer [2020-10-24 14:18:36,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 14:18:36,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 14:18:36,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 14:18:36,408 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 14:18:36,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:18:35" (1/3) ... [2020-10-24 14:18:36,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59faaef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:18:36, skipping insertion in model container [2020-10-24 14:18:36,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:35" (2/3) ... [2020-10-24 14:18:36,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59faaef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:18:36, skipping insertion in model container [2020-10-24 14:18:36,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:18:36" (3/3) ... [2020-10-24 14:18:36,413 INFO L111 eAbstractionObserver]: Analyzing ICFG drift_tenth.c [2020-10-24 14:18:36,428 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 14:18:36,436 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 14:18:36,451 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 14:18:36,501 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 14:18:36,501 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 14:18:36,502 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 14:18:36,502 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 14:18:36,502 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 14:18:36,502 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 14:18:36,502 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 14:18:36,503 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 14:18:36,520 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-10-24 14:18:36,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-24 14:18:36,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:18:36,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-24 14:18:36,527 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 14:18:36,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:18:36,534 INFO L82 PathProgramCache]: Analyzing trace with hash 889605037, now seen corresponding path program 1 times [2020-10-24 14:18:36,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 14:18:36,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477869200] [2020-10-24 14:18:36,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 14:18:36,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:18:36,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:18:36,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477869200] [2020-10-24 14:18:36,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 14:18:36,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-24 14:18:36,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079171212] [2020-10-24 14:18:36,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-24 14:18:36,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 14:18:36,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-24 14:18:36,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 14:18:36,793 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 3 states. [2020-10-24 14:18:36,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:18:36,827 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2020-10-24 14:18:36,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 14:18:36,830 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-24 14:18:36,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:18:36,838 INFO L225 Difference]: With dead ends: 23 [2020-10-24 14:18:36,839 INFO L226 Difference]: Without dead ends: 10 [2020-10-24 14:18:36,842 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 [2020-10-24 14:18:36,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-10-24 14:18:36,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2020-10-24 14:18:36,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-24 14:18:36,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-10-24 14:18:36,880 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2020-10-24 14:18:36,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:18:36,881 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-10-24 14:18:36,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-24 14:18:36,881 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-10-24 14:18:36,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-24 14:18:36,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:18:36,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 14:18:36,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 14:18:36,883 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 14:18:36,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:18:36,884 INFO L82 PathProgramCache]: Analyzing trace with hash 265180975, now seen corresponding path program 1 times [2020-10-24 14:18:36,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 14:18:36,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709945270] [2020-10-24 14:18:36,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 14:18:36,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:18:36,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:18:36,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709945270] [2020-10-24 14:18:36,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173578109] [2020-10-24 14:18:36,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 14:18:37,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:18:37,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-24 14:18:37,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:18:37,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:18:37,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-24 14:18:37,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-10-24 14:18:37,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403266638] [2020-10-24 14:18:37,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-24 14:18:37,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 14:18:37,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-24 14:18:37,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-24 14:18:37,068 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2020-10-24 14:18:37,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:18:37,121 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-10-24 14:18:37,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 14:18:37,122 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-24 14:18:37,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:18:37,123 INFO L225 Difference]: With dead ends: 16 [2020-10-24 14:18:37,123 INFO L226 Difference]: Without dead ends: 12 [2020-10-24 14:18:37,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-24 14:18:37,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-10-24 14:18:37,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2020-10-24 14:18:37,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-24 14:18:37,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-10-24 14:18:37,129 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2020-10-24 14:18:37,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:18:37,130 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-10-24 14:18:37,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-24 14:18:37,131 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-10-24 14:18:37,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-24 14:18:37,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:18:37,134 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2020-10-24 14:18:37,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-24 14:18:37,347 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 14:18:37,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:18:37,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1489078833, now seen corresponding path program 2 times [2020-10-24 14:18:37,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 14:18:37,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494400076] [2020-10-24 14:18:37,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 14:18:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:18:37,455 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:18:37,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494400076] [2020-10-24 14:18:37,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990967073] [2020-10-24 14:18:37,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-24 14:18:37,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-24 14:18:37,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-24 14:18:37,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-24 14:18:37,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:18:37,570 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:18:37,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-24 14:18:37,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-24 14:18:37,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337648083] [2020-10-24 14:18:37,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 14:18:37,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 14:18:37,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 14:18:37,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-24 14:18:37,577 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2020-10-24 14:18:37,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:18:37,615 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-10-24 14:18:37,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-24 14:18:37,616 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-24 14:18:37,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:18:37,617 INFO L225 Difference]: With dead ends: 18 [2020-10-24 14:18:37,617 INFO L226 Difference]: Without dead ends: 14 [2020-10-24 14:18:37,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-24 14:18:37,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-24 14:18:37,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2020-10-24 14:18:37,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-24 14:18:37,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-10-24 14:18:37,624 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2020-10-24 14:18:37,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:18:37,625 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-10-24 14:18:37,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 14:18:37,625 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-10-24 14:18:37,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-24 14:18:37,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:18:37,626 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1] [2020-10-24 14:18:37,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-24 14:18:37,839 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 14:18:37,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:18:37,841 INFO L82 PathProgramCache]: Analyzing trace with hash 833881267, now seen corresponding path program 3 times [2020-10-24 14:18:37,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 14:18:37,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049656931] [2020-10-24 14:18:37,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 14:18:37,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:18:37,902 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:18:37,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049656931] [2020-10-24 14:18:37,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153920008] [2020-10-24 14:18:37,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-24 14:18:37,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-24 14:18:37,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-24 14:18:37,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-24 14:18:37,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:18:37,983 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:18:37,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-24 14:18:37,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-10-24 14:18:37,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745032994] [2020-10-24 14:18:37,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 14:18:37,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 14:18:37,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 14:18:37,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-24 14:18:37,986 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 7 states. [2020-10-24 14:18:38,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:18:38,014 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-10-24 14:18:38,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 14:18:38,015 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-10-24 14:18:38,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:18:38,015 INFO L225 Difference]: With dead ends: 20 [2020-10-24 14:18:38,015 INFO L226 Difference]: Without dead ends: 16 [2020-10-24 14:18:38,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-24 14:18:38,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-24 14:18:38,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2020-10-24 14:18:38,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-24 14:18:38,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-10-24 14:18:38,020 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2020-10-24 14:18:38,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:18:38,020 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-10-24 14:18:38,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 14:18:38,020 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-10-24 14:18:38,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-24 14:18:38,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:18:38,021 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1] [2020-10-24 14:18:38,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-24 14:18:38,232 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 14:18:38,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:18:38,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1745754443, now seen corresponding path program 4 times [2020-10-24 14:18:38,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 14:18:38,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191240775] [2020-10-24 14:18:38,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 14:18:38,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:18:38,334 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:18:38,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191240775] [2020-10-24 14:18:38,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858742274] [2020-10-24 14:18:38,338 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-24 14:18:38,386 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-24 14:18:38,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-24 14:18:38,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-24 14:18:38,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:18:38,423 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:18:38,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-24 14:18:38,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-10-24 14:18:38,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301097065] [2020-10-24 14:18:38,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 14:18:38,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 14:18:38,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 14:18:38,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-24 14:18:38,426 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 8 states. [2020-10-24 14:18:38,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:18:38,460 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2020-10-24 14:18:38,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-24 14:18:38,461 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-10-24 14:18:38,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:18:38,461 INFO L225 Difference]: With dead ends: 22 [2020-10-24 14:18:38,461 INFO L226 Difference]: Without dead ends: 18 [2020-10-24 14:18:38,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-24 14:18:38,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-24 14:18:38,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-10-24 14:18:38,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-24 14:18:38,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-10-24 14:18:38,466 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2020-10-24 14:18:38,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:18:38,467 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-10-24 14:18:38,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 14:18:38,467 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-10-24 14:18:38,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-24 14:18:38,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:18:38,468 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1] [2020-10-24 14:18:38,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-24 14:18:38,680 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 14:18:38,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:18:38,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1715425335, now seen corresponding path program 5 times [2020-10-24 14:18:38,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 14:18:38,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315437400] [2020-10-24 14:18:38,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 14:18:38,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:18:38,757 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:18:38,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315437400] [2020-10-24 14:18:38,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782458242] [2020-10-24 14:18:38,758 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-24 14:18:38,809 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-10-24 14:18:38,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-24 14:18:38,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-24 14:18:38,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:18:38,843 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:18:38,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-24 14:18:38,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-10-24 14:18:38,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924824936] [2020-10-24 14:18:38,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-24 14:18:38,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 14:18:38,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-24 14:18:38,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-24 14:18:38,846 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 9 states. [2020-10-24 14:18:38,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:18:38,884 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-10-24 14:18:38,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-24 14:18:38,885 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2020-10-24 14:18:38,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:18:38,885 INFO L225 Difference]: With dead ends: 24 [2020-10-24 14:18:38,886 INFO L226 Difference]: Without dead ends: 20 [2020-10-24 14:18:38,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-24 14:18:38,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-24 14:18:38,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-10-24 14:18:38,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-24 14:18:38,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-10-24 14:18:38,894 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2020-10-24 14:18:38,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:18:38,895 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-10-24 14:18:38,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-24 14:18:38,895 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-10-24 14:18:38,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-24 14:18:38,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:18:38,896 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1] [2020-10-24 14:18:39,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-10-24 14:18:39,106 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 14:18:39,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:18:39,107 INFO L82 PathProgramCache]: Analyzing trace with hash -690462407, now seen corresponding path program 6 times [2020-10-24 14:18:39,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 14:18:39,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667407236] [2020-10-24 14:18:39,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 14:18:39,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:18:39,208 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:18:39,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667407236] [2020-10-24 14:18:39,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148081033] [2020-10-24 14:18:39,208 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-24 14:18:39,290 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-10-24 14:18:39,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-24 14:18:39,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-24 14:18:39,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:18:39,374 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:18:39,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-24 14:18:39,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-10-24 14:18:39,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824977990] [2020-10-24 14:18:39,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 14:18:39,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 14:18:39,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 14:18:39,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-24 14:18:39,379 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 10 states. [2020-10-24 14:18:39,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:18:39,417 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-10-24 14:18:39,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-24 14:18:39,418 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-10-24 14:18:39,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:18:39,418 INFO L225 Difference]: With dead ends: 26 [2020-10-24 14:18:39,419 INFO L226 Difference]: Without dead ends: 22 [2020-10-24 14:18:39,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-24 14:18:39,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-24 14:18:39,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2020-10-24 14:18:39,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-24 14:18:39,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-10-24 14:18:39,423 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2020-10-24 14:18:39,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:18:39,424 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-10-24 14:18:39,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 14:18:39,424 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-10-24 14:18:39,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-24 14:18:39,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:18:39,425 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1] [2020-10-24 14:18:39,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-24 14:18:39,627 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 14:18:39,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:18:39,628 INFO L82 PathProgramCache]: Analyzing trace with hash -2056177221, now seen corresponding path program 7 times [2020-10-24 14:18:39,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 14:18:39,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450339314] [2020-10-24 14:18:39,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 14:18:39,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:18:39,780 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:18:39,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450339314] [2020-10-24 14:18:39,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083445055] [2020-10-24 14:18:39,780 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-24 14:18:39,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:18:39,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-24 14:18:39,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:18:39,870 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:18:39,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-24 14:18:39,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-10-24 14:18:39,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319700568] [2020-10-24 14:18:39,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-24 14:18:39,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 14:18:39,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-24 14:18:39,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-10-24 14:18:39,873 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 11 states. [2020-10-24 14:18:39,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:18:39,914 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-10-24 14:18:39,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-24 14:18:39,915 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2020-10-24 14:18:39,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:18:39,915 INFO L225 Difference]: With dead ends: 28 [2020-10-24 14:18:39,916 INFO L226 Difference]: Without dead ends: 24 [2020-10-24 14:18:39,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-10-24 14:18:39,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-24 14:18:39,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2020-10-24 14:18:39,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-24 14:18:39,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-10-24 14:18:39,921 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2020-10-24 14:18:39,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:18:39,921 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-10-24 14:18:39,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-24 14:18:39,921 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-10-24 14:18:39,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-24 14:18:39,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:18:39,922 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1] [2020-10-24 14:18:40,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-24 14:18:40,134 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 14:18:40,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:18:40,135 INFO L82 PathProgramCache]: Analyzing trace with hash -248120899, now seen corresponding path program 8 times [2020-10-24 14:18:40,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 14:18:40,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106366331] [2020-10-24 14:18:40,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 14:18:40,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:18:40,248 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:18:40,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106366331] [2020-10-24 14:18:40,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159464362] [2020-10-24 14:18:40,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-24 14:18:40,301 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-24 14:18:40,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-24 14:18:40,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-24 14:18:40,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:18:40,331 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:18:40,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-24 14:18:40,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-10-24 14:18:40,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622592863] [2020-10-24 14:18:40,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-24 14:18:40,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 14:18:40,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-24 14:18:40,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-10-24 14:18:40,333 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 12 states. [2020-10-24 14:18:40,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:18:40,370 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2020-10-24 14:18:40,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-24 14:18:40,371 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2020-10-24 14:18:40,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:18:40,372 INFO L225 Difference]: With dead ends: 30 [2020-10-24 14:18:40,372 INFO L226 Difference]: Without dead ends: 26 [2020-10-24 14:18:40,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-10-24 14:18:40,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-24 14:18:40,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-10-24 14:18:40,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-24 14:18:40,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2020-10-24 14:18:40,376 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2020-10-24 14:18:40,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:18:40,377 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2020-10-24 14:18:40,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-24 14:18:40,377 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2020-10-24 14:18:40,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-24 14:18:40,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:18:40,378 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1] [2020-10-24 14:18:40,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-10-24 14:18:40,587 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 14:18:40,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:18:40,588 INFO L82 PathProgramCache]: Analyzing trace with hash 2127216959, now seen corresponding path program 9 times [2020-10-24 14:18:40,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 14:18:40,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177048672] [2020-10-24 14:18:40,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 14:18:40,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:18:40,747 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:18:40,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177048672] [2020-10-24 14:18:40,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736715046] [2020-10-24 14:18:40,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-24 14:18:40,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-10-24 14:18:40,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-24 14:18:40,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-24 14:18:40,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:18:40,831 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:18:40,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-24 14:18:40,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-10-24 14:18:40,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966963434] [2020-10-24 14:18:40,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-24 14:18:40,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 14:18:40,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-24 14:18:40,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-10-24 14:18:40,834 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 13 states. [2020-10-24 14:18:40,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:18:40,884 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-10-24 14:18:40,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-24 14:18:40,885 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2020-10-24 14:18:40,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:18:40,886 INFO L225 Difference]: With dead ends: 31 [2020-10-24 14:18:40,886 INFO L226 Difference]: Without dead ends: 27 [2020-10-24 14:18:40,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-10-24 14:18:40,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-24 14:18:40,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-24 14:18:40,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-24 14:18:40,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-10-24 14:18:40,892 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2020-10-24 14:18:40,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:18:40,892 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-10-24 14:18:40,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-24 14:18:40,892 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-10-24 14:18:40,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-24 14:18:40,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:18:40,893 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1] [2020-10-24 14:18:41,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-24 14:18:41,103 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 14:18:41,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:18:41,104 INFO L82 PathProgramCache]: Analyzing trace with hash -95702975, now seen corresponding path program 10 times [2020-10-24 14:18:41,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 14:18:41,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198141501] [2020-10-24 14:18:41,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 14:18:41,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 14:18:41,118 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 14:18:41,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 14:18:41,130 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 14:18:41,155 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 14:18:41,156 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 14:18:41,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-24 14:18:41,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:18:41 BoogieIcfgContainer [2020-10-24 14:18:41,192 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 14:18:41,193 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 14:18:41,193 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 14:18:41,193 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 14:18:41,193 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:18:36" (3/4) ... [2020-10-24 14:18:41,197 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 14:18:41,197 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 14:18:41,199 INFO L168 Benchmark]: Toolchain (without parser) took 5731.94 ms. Allocated memory was 44.0 MB in the beginning and 67.1 MB in the end (delta: 23.1 MB). Free memory was 21.3 MB in the beginning and 46.7 MB in the end (delta: -25.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 14:18:41,199 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 44.0 MB. Free memory is still 29.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 14:18:41,200 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.84 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 20.7 MB in the beginning and 32.4 MB in the end (delta: -11.7 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. [2020-10-24 14:18:41,201 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.33 ms. Allocated memory is still 54.5 MB. Free memory was 32.4 MB in the beginning and 31.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 14:18:41,201 INFO L168 Benchmark]: Boogie Preprocessor took 24.01 ms. Allocated memory is still 54.5 MB. Free memory was 31.0 MB in the beginning and 30.0 MB in the end (delta: 996.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 14:18:41,204 INFO L168 Benchmark]: RCFGBuilder took 552.45 ms. Allocated memory is still 54.5 MB. Free memory was 29.9 MB in the beginning and 29.6 MB in the end (delta: 292.6 kB). Peak memory consumption was 2.6 MB. Max. memory is 16.1 GB. [2020-10-24 14:18:41,204 INFO L168 Benchmark]: TraceAbstraction took 4788.43 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 29.1 MB in the beginning and 47.3 MB in the end (delta: -18.2 MB). Peak memory consumption was 25.4 MB. Max. memory is 16.1 GB. [2020-10-24 14:18:41,205 INFO L168 Benchmark]: Witness Printer took 4.25 ms. Allocated memory is still 67.1 MB. Free memory was 47.3 MB in the beginning and 46.7 MB in the end (delta: 609.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 14:18:41,209 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 44.0 MB. Free memory is still 29.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 306.84 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 20.7 MB in the beginning and 32.4 MB in the end (delta: -11.7 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.33 ms. Allocated memory is still 54.5 MB. Free memory was 32.4 MB in the beginning and 31.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.01 ms. Allocated memory is still 54.5 MB. Free memory was 31.0 MB in the beginning and 30.0 MB in the end (delta: 996.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 552.45 ms. Allocated memory is still 54.5 MB. Free memory was 29.9 MB in the beginning and 29.6 MB in the end (delta: 292.6 kB). Peak memory consumption was 2.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4788.43 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 29.1 MB in the beginning and 47.3 MB in the end (delta: -18.2 MB). Peak memory consumption was 25.4 MB. Max. memory is 16.1 GB. * Witness Printer took 4.25 ms. Allocated memory is still 67.1 MB. Free memory was 47.3 MB in the beginning and 46.7 MB in the end (delta: 609.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAT_SMToperation at line 15, overapproximation of someBinaryDOUBLE_SMTComparisonOperation at line 17. Possible FailurePath: [L10] float tick = 1.f / 10.f; [L11] float time = 0.f; [L12] int i; [L14] i = 0 [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ [L14] COND TRUE i < 10 [L15] time += tick [L14] i++ [L14] COND FALSE !(i < 10) [L6] COND TRUE !(cond) [L3] __assert_fail("0", "drift_tenth.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.6s, OverallIterations: 11, TraceHistogramMax: 10, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 64 SDtfs, 55 SDslu, 208 SDs, 0 SdLazy, 184 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 210 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 9 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 320 NumberOfCodeBlocks, 319 NumberOfCodeBlocksAsserted, 45 NumberOfCheckSat, 275 ConstructedInterpolants, 0 QuantifiedInterpolants, 11465 SizeOfPredicates, 9 NumberOfNonLiveVariables, 493 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 19 InterpolantComputations, 1 PerfectInterpolantSequences, 0/570 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-ee8e70e [2020-10-24 14:18:43,672 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 14:18:43,675 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 14:18:43,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 14:18:43,724 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 14:18:43,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 14:18:43,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 14:18:43,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 14:18:43,741 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 14:18:43,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 14:18:43,749 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 14:18:43,751 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 14:18:43,751 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 14:18:43,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 14:18:43,753 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 14:18:43,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 14:18:43,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 14:18:43,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 14:18:43,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 14:18:43,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 14:18:43,761 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 14:18:43,763 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 14:18:43,764 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 14:18:43,765 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 14:18:43,768 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 14:18:43,768 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 14:18:43,768 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 14:18:43,769 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 14:18:43,770 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 14:18:43,771 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 14:18:43,771 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 14:18:43,772 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 14:18:43,773 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 14:18:43,774 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 14:18:43,775 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 14:18:43,775 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 14:18:43,776 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 14:18:43,776 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 14:18:43,777 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 14:18:43,778 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 14:18:43,778 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 14:18:43,782 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 14:18:43,819 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 14:18:43,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 14:18:43,821 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 14:18:43,821 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 14:18:43,821 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 14:18:43,822 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 14:18:43,822 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 14:18:43,822 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 14:18:43,823 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 14:18:43,823 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 14:18:43,823 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 14:18:43,823 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 14:18:43,824 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 14:18:43,824 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 14:18:43,824 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 14:18:43,825 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 14:18:43,825 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 14:18:43,825 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 14:18:43,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 14:18:43,826 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 14:18:43,826 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 14:18:43,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 14:18:43,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 14:18:43,827 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 14:18:43,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 14:18:43,827 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 14:18:43,828 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 14:18:43,828 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 14:18:43,828 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 14:18:43,828 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 14:18:43,828 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 14:18:43,829 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 15f6de5d900b1c6bf3c8f60c8cfdb35df3f7d854 [2020-10-24 14:18:44,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 14:18:44,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 14:18:44,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 14:18:44,222 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 14:18:44,223 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 14:18:44,224 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/drift_tenth.c [2020-10-24 14:18:44,305 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d709116a/a4ec40a518be4f608cff3eb8e83ed3a8/FLAGe98824d34 [2020-10-24 14:18:44,948 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 14:18:44,948 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/float-benchs/drift_tenth.c [2020-10-24 14:18:44,955 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d709116a/a4ec40a518be4f608cff3eb8e83ed3a8/FLAGe98824d34 [2020-10-24 14:18:44,976 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d709116a/a4ec40a518be4f608cff3eb8e83ed3a8 [2020-10-24 14:18:44,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 14:18:44,986 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 14:18:44,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 14:18:44,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 14:18:44,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 14:18:44,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:18:44" (1/1) ... [2020-10-24 14:18:45,004 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12d7d07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:44, skipping insertion in model container [2020-10-24 14:18:45,005 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:18:44" (1/1) ... [2020-10-24 14:18:45,013 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 14:18:45,032 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 14:18:45,241 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 14:18:45,258 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 14:18:45,276 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 14:18:45,301 INFO L217 MainTranslator]: Completed translation [2020-10-24 14:18:45,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:45 WrapperNode [2020-10-24 14:18:45,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 14:18:45,304 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 14:18:45,304 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 14:18:45,304 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 14:18:45,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:45" (1/1) ... [2020-10-24 14:18:45,324 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:45" (1/1) ... [2020-10-24 14:18:45,344 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 14:18:45,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 14:18:45,346 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 14:18:45,346 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 14:18:45,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:45" (1/1) ... [2020-10-24 14:18:45,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:45" (1/1) ... [2020-10-24 14:18:45,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:45" (1/1) ... [2020-10-24 14:18:45,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:45" (1/1) ... [2020-10-24 14:18:45,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:45" (1/1) ... [2020-10-24 14:18:45,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:45" (1/1) ... [2020-10-24 14:18:45,377 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:45" (1/1) ... [2020-10-24 14:18:45,380 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 14:18:45,381 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 14:18:45,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 14:18:45,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 14:18:45,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 14:18:45,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_DOUBLE [2020-10-24 14:18:45,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 14:18:45,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 14:18:45,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 14:18:45,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 14:18:45,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_FLOAT [2020-10-24 14:18:45,776 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 14:18:45,776 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-24 14:18:45,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:18:45 BoogieIcfgContainer [2020-10-24 14:18:45,782 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 14:18:45,784 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 14:18:45,784 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 14:18:45,795 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 14:18:45,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:18:44" (1/3) ... [2020-10-24 14:18:45,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d73737d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:18:45, skipping insertion in model container [2020-10-24 14:18:45,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:45" (2/3) ... [2020-10-24 14:18:45,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d73737d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:18:45, skipping insertion in model container [2020-10-24 14:18:45,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:18:45" (3/3) ... [2020-10-24 14:18:45,802 INFO L111 eAbstractionObserver]: Analyzing ICFG drift_tenth.c [2020-10-24 14:18:45,821 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 14:18:45,825 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 14:18:45,842 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 14:18:45,887 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 14:18:45,888 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 14:18:45,888 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 14:18:45,888 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 14:18:45,888 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 14:18:45,888 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 14:18:45,888 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 14:18:45,888 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 14:18:45,907 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-10-24 14:18:45,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-24 14:18:45,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:18:45,914 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-24 14:18:45,915 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 14:18:45,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:18:45,922 INFO L82 PathProgramCache]: Analyzing trace with hash 889605037, now seen corresponding path program 1 times [2020-10-24 14:18:45,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:18:45,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [932931402] [2020-10-24 14:18:45,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-24 14:18:46,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:18:46,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-24 14:18:46,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:18:46,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:18:46,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 14:18:46,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:18:46,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [932931402] [2020-10-24 14:18:46,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 14:18:46,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-24 14:18:46,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177790231] [2020-10-24 14:18:46,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 14:18:46,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 14:18:46,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 14:18:46,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-24 14:18:46,453 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 4 states. [2020-10-24 14:18:46,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:18:46,572 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2020-10-24 14:18:46,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 14:18:46,576 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-10-24 14:18:46,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:18:46,586 INFO L225 Difference]: With dead ends: 24 [2020-10-24 14:18:46,587 INFO L226 Difference]: Without dead ends: 11 [2020-10-24 14:18:46,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-24 14:18:46,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-10-24 14:18:46,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-24 14:18:46,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-24 14:18:46,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-10-24 14:18:46,625 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 6 [2020-10-24 14:18:46,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:18:46,626 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-10-24 14:18:46,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 14:18:46,626 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-10-24 14:18:46,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-24 14:18:46,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:18:46,627 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2020-10-24 14:18:46,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 14:18:46,843 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 14:18:46,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:18:46,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1489078833, now seen corresponding path program 1 times [2020-10-24 14:18:46,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:18:46,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1689445954] [2020-10-24 14:18:46,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-24 14:18:47,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:18:47,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-24 14:18:47,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:18:47,214 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:18:47,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 14:18:47,264 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:18:47,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1689445954] [2020-10-24 14:18:47,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-24 14:18:47,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-10-24 14:18:47,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123723064] [2020-10-24 14:18:47,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 14:18:47,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 14:18:47,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 14:18:47,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-24 14:18:47,269 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 8 states. [2020-10-24 14:18:47,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:18:47,746 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2020-10-24 14:18:47,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-24 14:18:47,749 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2020-10-24 14:18:47,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:18:47,750 INFO L225 Difference]: With dead ends: 23 [2020-10-24 14:18:47,750 INFO L226 Difference]: Without dead ends: 19 [2020-10-24 14:18:47,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-24 14:18:47,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-24 14:18:47,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-24 14:18:47,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-24 14:18:47,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-10-24 14:18:47,758 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2020-10-24 14:18:47,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:18:47,758 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-10-24 14:18:47,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 14:18:47,759 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-10-24 14:18:47,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-24 14:18:47,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:18:47,760 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1] [2020-10-24 14:18:47,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 14:18:47,961 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 14:18:47,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:18:47,963 INFO L82 PathProgramCache]: Analyzing trace with hash -690462407, now seen corresponding path program 2 times [2020-10-24 14:18:47,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:18:47,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [271587192] [2020-10-24 14:18:47,965 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-24 14:18:48,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-24 14:18:48,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-24 14:18:48,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-24 14:18:48,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:18:50,589 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification that was a NOOP. DAG size: 36 [2020-10-24 14:18:58,207 WARN L193 SmtUtils]: Spent 3.88 s on a formula simplification that was a NOOP. DAG size: 45 [2020-10-24 14:19:17,604 WARN L193 SmtUtils]: Spent 7.46 s on a formula simplification that was a NOOP. DAG size: 52 [2020-10-24 14:19:42,461 WARN L193 SmtUtils]: Spent 7.97 s on a formula simplification that was a NOOP. DAG size: 59 [2020-10-24 14:20:15,957 WARN L193 SmtUtils]: Spent 8.94 s on a formula simplification that was a NOOP. DAG size: 66 [2020-10-24 14:21:10,312 WARN L193 SmtUtils]: Spent 11.33 s on a formula simplification that was a NOOP. DAG size: 73 [2020-10-24 14:21:12,463 WARN L838 $PredicateComparison]: unable to prove that (and (= roundNearestTiesToEven c_~CRM) (exists ((|v_ULTIMATE.start_main_#t~nondet8_8| (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~nondet7_8| (_ BitVec 32)) (v_ULTIMATE.start_main_~time~0_11 (_ BitVec 32)) (v_ULTIMATE.start_main_~time~0_13 (_ BitVec 32)) (v_ULTIMATE.start_main_~time~0_12 (_ BitVec 32)) (v_ULTIMATE.start_main_~time~0_15 (_ BitVec 32)) (ULTIMATE.start_main_~tick~0 (_ BitVec 32)) (v_ULTIMATE.start_main_~time~0_14 (_ BitVec 32)) (v_ULTIMATE.start_main_~time~0_16 (_ BitVec 32))) (let ((.cse0 (fp ((_ extract 31 31) v_ULTIMATE.start_main_~time~0_12) ((_ extract 30 23) v_ULTIMATE.start_main_~time~0_12) ((_ extract 22 0) v_ULTIMATE.start_main_~time~0_12))) (.cse2 (fp ((_ extract 31 31) v_ULTIMATE.start_main_~time~0_13) ((_ extract 30 23) v_ULTIMATE.start_main_~time~0_13) ((_ extract 22 0) v_ULTIMATE.start_main_~time~0_13))) (.cse3 (fp ((_ extract 31 31) |v_ULTIMATE.start_main_#t~nondet7_8|) ((_ extract 30 23) |v_ULTIMATE.start_main_#t~nondet7_8|) ((_ extract 22 0) |v_ULTIMATE.start_main_#t~nondet7_8|))) (.cse4 (fp ((_ extract 31 31) |v_ULTIMATE.start_main_#t~nondet8_8|) ((_ extract 30 23) |v_ULTIMATE.start_main_#t~nondet8_8|) ((_ extract 22 0) |v_ULTIMATE.start_main_#t~nondet8_8|))) (.cse7 (fp ((_ extract 31 31) v_ULTIMATE.start_main_~time~0_16) ((_ extract 30 23) v_ULTIMATE.start_main_~time~0_16) ((_ extract 22 0) v_ULTIMATE.start_main_~time~0_16))) (.cse8 (fp ((_ extract 31 31) v_ULTIMATE.start_main_~time~0_15) ((_ extract 30 23) v_ULTIMATE.start_main_~time~0_15) ((_ extract 22 0) v_ULTIMATE.start_main_~time~0_15))) (.cse6 (fp ((_ extract 31 31) v_ULTIMATE.start_main_~time~0_14) ((_ extract 30 23) v_ULTIMATE.start_main_~time~0_14) ((_ extract 22 0) v_ULTIMATE.start_main_~time~0_14))) (.cse1 (fp ((_ extract 31 31) ULTIMATE.start_main_~tick~0) ((_ extract 30 23) ULTIMATE.start_main_~tick~0) ((_ extract 22 0) ULTIMATE.start_main_~tick~0))) (.cse5 (fp ((_ extract 31 31) v_ULTIMATE.start_main_~time~0_11) ((_ extract 30 23) v_ULTIMATE.start_main_~time~0_11) ((_ extract 22 0) v_ULTIMATE.start_main_~time~0_11)))) (and (= (fp.add c_~CRM .cse0 .cse1) .cse2) (= (fp.div c_~CRM .cse3 .cse4) .cse1) (= .cse0 (fp.add c_~CRM .cse5 .cse1)) (= (fp.add c_~CRM .cse2 .cse1) .cse6) (= .cse3 ((_ to_fp 8 24) c_~CRM 1.0)) (= .cse7 (fp.add c_~CRM .cse8 .cse1)) (= .cse4 ((_ to_fp 8 24) c_~CRM 10.0)) (= (fp.add c_~CRM .cse7 .cse1) (fp ((_ extract 31 31) c_ULTIMATE.start_main_~time~0) ((_ extract 30 23) c_ULTIMATE.start_main_~time~0) ((_ extract 22 0) c_ULTIMATE.start_main_~time~0))) (= .cse8 (fp.add c_~CRM .cse6 .cse1)) (= .cse5 (_ +zero 8 24)))))) is different from false [2020-10-24 14:21:12,649 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-24 14:21:20,570 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 21 times theorem prover too weak. 0 trivial. 11 not checked. [2020-10-24 14:21:20,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 14:21:36,751 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-10-24 14:21:48,647 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-10-24 14:22:08,719 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-10-24 14:22:10,794 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~time~0_17 (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~nondet13_8| (_ BitVec 64)) (v_ULTIMATE.start_main_~time~0_19 (_ BitVec 32)) (v_ULTIMATE.start_main_~time~0_18 (_ BitVec 32))) (let ((.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet13_8|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet13_8|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet13_8|))) (.cse1 (fp ((_ extract 31 31) v_ULTIMATE.start_main_~time~0_17) ((_ extract 30 23) v_ULTIMATE.start_main_~time~0_17) ((_ extract 22 0) v_ULTIMATE.start_main_~time~0_17))) (.cse4 (fp ((_ extract 31 31) v_ULTIMATE.start_main_~time~0_18) ((_ extract 30 23) v_ULTIMATE.start_main_~time~0_18) ((_ extract 22 0) v_ULTIMATE.start_main_~time~0_18))) (.cse3 (fp ((_ extract 31 31) v_ULTIMATE.start_main_~time~0_19) ((_ extract 30 23) v_ULTIMATE.start_main_~time~0_19) ((_ extract 22 0) v_ULTIMATE.start_main_~time~0_19))) (.cse2 (fp ((_ extract 31 31) c_ULTIMATE.start_main_~tick~0) ((_ extract 30 23) c_ULTIMATE.start_main_~tick~0) ((_ extract 22 0) c_ULTIMATE.start_main_~tick~0)))) (or (not (= ((_ to_fp 11 53) c_~CRM 1.0) .cse0)) (not (fp.eq ((_ to_fp 11 53) c_~CRM .cse1) .cse0)) (not (= (fp.add c_~CRM (fp ((_ extract 31 31) c_ULTIMATE.start_main_~time~0) ((_ extract 30 23) c_ULTIMATE.start_main_~time~0) ((_ extract 22 0) c_ULTIMATE.start_main_~time~0)) .cse2) .cse3)) (not (= (fp.add c_~CRM .cse4 .cse2) .cse1)) (not (= .cse4 (fp.add c_~CRM .cse3 .cse2)))))) is different from true [2020-10-24 14:22:37,457 WARN L193 SmtUtils]: Spent 940.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-10-24 14:22:39,567 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~time~0_20 (_ BitVec 32)) (v_ULTIMATE.start_main_~time~0_21 (_ BitVec 32)) (v_ULTIMATE.start_main_~time~0_17 (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~nondet13_8| (_ BitVec 64)) (v_ULTIMATE.start_main_~time~0_19 (_ BitVec 32)) (v_ULTIMATE.start_main_~time~0_18 (_ BitVec 32))) (let ((.cse0 (fp ((_ extract 31 31) v_ULTIMATE.start_main_~time~0_21) ((_ extract 30 23) v_ULTIMATE.start_main_~time~0_21) ((_ extract 22 0) v_ULTIMATE.start_main_~time~0_21))) (.cse3 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet13_8|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet13_8|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet13_8|))) (.cse2 (fp ((_ extract 31 31) v_ULTIMATE.start_main_~time~0_20) ((_ extract 30 23) v_ULTIMATE.start_main_~time~0_20) ((_ extract 22 0) v_ULTIMATE.start_main_~time~0_20))) (.cse4 (fp ((_ extract 31 31) v_ULTIMATE.start_main_~time~0_17) ((_ extract 30 23) v_ULTIMATE.start_main_~time~0_17) ((_ extract 22 0) v_ULTIMATE.start_main_~time~0_17))) (.cse6 (fp ((_ extract 31 31) v_ULTIMATE.start_main_~time~0_18) ((_ extract 30 23) v_ULTIMATE.start_main_~time~0_18) ((_ extract 22 0) v_ULTIMATE.start_main_~time~0_18))) (.cse5 (fp ((_ extract 31 31) v_ULTIMATE.start_main_~time~0_19) ((_ extract 30 23) v_ULTIMATE.start_main_~time~0_19) ((_ extract 22 0) v_ULTIMATE.start_main_~time~0_19))) (.cse1 (fp ((_ extract 31 31) c_ULTIMATE.start_main_~tick~0) ((_ extract 30 23) c_ULTIMATE.start_main_~tick~0) ((_ extract 22 0) c_ULTIMATE.start_main_~tick~0)))) (or (not (= (fp.add c_~CRM .cse0 .cse1) .cse2)) (not (= ((_ to_fp 11 53) c_~CRM 1.0) .cse3)) (not (= (fp.add c_~CRM (fp ((_ extract 31 31) c_ULTIMATE.start_main_~time~0) ((_ extract 30 23) c_ULTIMATE.start_main_~time~0) ((_ extract 22 0) c_ULTIMATE.start_main_~time~0)) .cse1) .cse0)) (not (fp.eq ((_ to_fp 11 53) c_~CRM .cse4) .cse3)) (not (= (fp.add c_~CRM .cse2 .cse1) .cse5)) (not (= (fp.add c_~CRM .cse6 .cse1) .cse4)) (not (= .cse6 (fp.add c_~CRM .cse5 .cse1)))))) is different from true [2020-10-24 14:22:41,675 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~time~0_20 (_ BitVec 32)) (v_ULTIMATE.start_main_~time~0_22 (_ BitVec 32)) (v_ULTIMATE.start_main_~time~0_21 (_ BitVec 32)) (v_ULTIMATE.start_main_~time~0_17 (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~nondet13_8| (_ BitVec 64)) (v_ULTIMATE.start_main_~time~0_19 (_ BitVec 32)) (v_ULTIMATE.start_main_~time~0_18 (_ BitVec 32))) (let ((.cse4 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet13_8|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet13_8|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet13_8|))) (.cse2 (fp ((_ extract 31 31) v_ULTIMATE.start_main_~time~0_21) ((_ extract 30 23) v_ULTIMATE.start_main_~time~0_21) ((_ extract 22 0) v_ULTIMATE.start_main_~time~0_21))) (.cse1 (fp ((_ extract 31 31) v_ULTIMATE.start_main_~time~0_22) ((_ extract 30 23) v_ULTIMATE.start_main_~time~0_22) ((_ extract 22 0) v_ULTIMATE.start_main_~time~0_22))) (.cse3 (fp ((_ extract 31 31) v_ULTIMATE.start_main_~time~0_20) ((_ extract 30 23) v_ULTIMATE.start_main_~time~0_20) ((_ extract 22 0) v_ULTIMATE.start_main_~time~0_20))) (.cse5 (fp ((_ extract 31 31) v_ULTIMATE.start_main_~time~0_17) ((_ extract 30 23) v_ULTIMATE.start_main_~time~0_17) ((_ extract 22 0) v_ULTIMATE.start_main_~time~0_17))) (.cse7 (fp ((_ extract 31 31) v_ULTIMATE.start_main_~time~0_18) ((_ extract 30 23) v_ULTIMATE.start_main_~time~0_18) ((_ extract 22 0) v_ULTIMATE.start_main_~time~0_18))) (.cse6 (fp ((_ extract 31 31) v_ULTIMATE.start_main_~time~0_19) ((_ extract 30 23) v_ULTIMATE.start_main_~time~0_19) ((_ extract 22 0) v_ULTIMATE.start_main_~time~0_19))) (.cse0 (fp ((_ extract 31 31) c_ULTIMATE.start_main_~tick~0) ((_ extract 30 23) c_ULTIMATE.start_main_~tick~0) ((_ extract 22 0) c_ULTIMATE.start_main_~tick~0)))) (or (not (= (fp.add c_~CRM (fp ((_ extract 31 31) c_ULTIMATE.start_main_~time~0) ((_ extract 30 23) c_ULTIMATE.start_main_~time~0) ((_ extract 22 0) c_ULTIMATE.start_main_~time~0)) .cse0) .cse1)) (not (= (fp.add c_~CRM .cse2 .cse0) .cse3)) (not (= ((_ to_fp 11 53) c_~CRM 1.0) .cse4)) (not (fp.eq ((_ to_fp 11 53) c_~CRM .cse5) .cse4)) (not (= .cse2 (fp.add c_~CRM .cse1 .cse0))) (not (= (fp.add c_~CRM .cse3 .cse0) .cse6)) (not (= (fp.add c_~CRM .cse7 .cse0) .cse5)) (not (= .cse7 (fp.add c_~CRM .cse6 .cse0)))))) is different from true [2020-10-24 14:22:43,834 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~nondet8_8| (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~nondet7_8| (_ BitVec 32)) (v_ULTIMATE.start_main_~time~0_20 (_ BitVec 32)) (v_ULTIMATE.start_main_~tick~0_7 (_ BitVec 32)) (v_ULTIMATE.start_main_~time~0_22 (_ BitVec 32)) (v_ULTIMATE.start_main_~time~0_21 (_ BitVec 32)) (v_ULTIMATE.start_main_~time~0_23 (_ BitVec 32)) (v_ULTIMATE.start_main_~time~0_17 (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~nondet13_8| (_ BitVec 64)) (v_ULTIMATE.start_main_~time~0_19 (_ BitVec 32)) (v_ULTIMATE.start_main_~time~0_18 (_ BitVec 32))) (let ((.cse6 (fp ((_ extract 31 31) v_ULTIMATE.start_main_~time~0_20) ((_ extract 30 23) v_ULTIMATE.start_main_~time~0_20) ((_ extract 22 0) v_ULTIMATE.start_main_~time~0_20))) (.cse5 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet13_8|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet13_8|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet13_8|))) (.cse8 (fp ((_ extract 31 31) v_ULTIMATE.start_main_~time~0_19) ((_ extract 30 23) v_ULTIMATE.start_main_~time~0_19) ((_ extract 22 0) v_ULTIMATE.start_main_~time~0_19))) (.cse0 (fp ((_ extract 31 31) v_ULTIMATE.start_main_~time~0_22) ((_ extract 30 23) v_ULTIMATE.start_main_~time~0_22) ((_ extract 22 0) v_ULTIMATE.start_main_~time~0_22))) (.cse7 (fp ((_ extract 31 31) v_ULTIMATE.start_main_~time~0_21) ((_ extract 30 23) v_ULTIMATE.start_main_~time~0_21) ((_ extract 22 0) v_ULTIMATE.start_main_~time~0_21))) (.cse1 (fp ((_ extract 31 31) v_ULTIMATE.start_main_~time~0_23) ((_ extract 30 23) v_ULTIMATE.start_main_~time~0_23) ((_ extract 22 0) v_ULTIMATE.start_main_~time~0_23))) (.cse9 (fp ((_ extract 31 31) v_ULTIMATE.start_main_~time~0_17) ((_ extract 30 23) v_ULTIMATE.start_main_~time~0_17) ((_ extract 22 0) v_ULTIMATE.start_main_~time~0_17))) (.cse10 (fp ((_ extract 31 31) v_ULTIMATE.start_main_~time~0_18) ((_ extract 30 23) v_ULTIMATE.start_main_~time~0_18) ((_ extract 22 0) v_ULTIMATE.start_main_~time~0_18))) (.cse2 (fp ((_ extract 31 31) v_ULTIMATE.start_main_~tick~0_7) ((_ extract 30 23) v_ULTIMATE.start_main_~tick~0_7) ((_ extract 22 0) v_ULTIMATE.start_main_~tick~0_7))) (.cse4 (fp ((_ extract 31 31) |v_ULTIMATE.start_main_#t~nondet7_8|) ((_ extract 30 23) |v_ULTIMATE.start_main_#t~nondet7_8|) ((_ extract 22 0) |v_ULTIMATE.start_main_#t~nondet7_8|))) (.cse3 (fp ((_ extract 31 31) |v_ULTIMATE.start_main_#t~nondet8_8|) ((_ extract 30 23) |v_ULTIMATE.start_main_#t~nondet8_8|) ((_ extract 22 0) |v_ULTIMATE.start_main_#t~nondet8_8|)))) (or (not (= .cse0 (fp.add c_~CRM .cse1 .cse2))) (not (= .cse3 ((_ to_fp 8 24) c_~CRM 10.0))) (not (= .cse4 ((_ to_fp 8 24) c_~CRM 1.0))) (not (= ((_ to_fp 11 53) c_~CRM 1.0) .cse5)) (not (= .cse6 (fp.add c_~CRM .cse7 .cse2))) (not (= (fp.add c_~CRM .cse6 .cse2) .cse8)) (not (fp.eq ((_ to_fp 11 53) c_~CRM .cse9) .cse5)) (not (= .cse10 (fp.add c_~CRM .cse8 .cse2))) (not (= (fp.add c_~CRM .cse0 .cse2) .cse7)) (not (= .cse1 (_ +zero 8 24))) (not (= .cse9 (fp.add c_~CRM .cse10 .cse2))) (not (= .cse2 (fp.div c_~CRM .cse4 .cse3)))))) is different from true [2020-10-24 14:22:43,843 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 6 times theorem prover too weak. 0 trivial. 24 not checked. [2020-10-24 14:22:43,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [271587192] [2020-10-24 14:22:43,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-24 14:22:43,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2020-10-24 14:22:43,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644685831] [2020-10-24 14:22:43,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-24 14:22:43,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 14:22:43,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-24 14:22:43,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=122, Unknown=52, NotChecked=150, Total=380 [2020-10-24 14:22:43,848 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 20 states. [2020-10-24 14:23:32,212 WARN L193 SmtUtils]: Spent 7.94 s on a formula simplification. DAG size of input: 101 DAG size of output: 36 [2020-10-24 14:24:23,631 WARN L193 SmtUtils]: Spent 16.98 s on a formula simplification. DAG size of input: 110 DAG size of output: 45 [2020-10-24 14:25:34,764 WARN L193 SmtUtils]: Spent 25.19 s on a formula simplification. DAG size of input: 109 DAG size of output: 97 [2020-10-24 14:26:52,341 WARN L193 SmtUtils]: Spent 14.68 s on a formula simplification that was a NOOP. DAG size: 96 [2020-10-24 14:28:14,261 WARN L193 SmtUtils]: Spent 23.03 s on a formula simplification. DAG size of input: 107 DAG size of output: 66 [2020-10-24 14:29:18,383 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2020-10-24 14:29:18,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-24 14:29:18,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-24 14:29:18,587 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:226) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:153) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:934) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:773) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:388) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:229) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:281) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1064) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:966) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:187) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:743) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:674) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:473) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:206) ... 45 more [2020-10-24 14:29:18,594 INFO L168 Benchmark]: Toolchain (without parser) took 633612.92 ms. Allocated memory was 41.9 MB in the beginning and 62.9 MB in the end (delta: 21.0 MB). Free memory was 26.8 MB in the beginning and 33.2 MB in the end (delta: -6.4 MB). Peak memory consumption was 13.2 MB. Max. memory is 16.1 GB. [2020-10-24 14:29:18,595 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 41.9 MB. Free memory is still 26.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 14:29:18,596 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.45 ms. Allocated memory was 41.9 MB in the beginning and 52.4 MB in the end (delta: 10.5 MB). Free memory was 26.2 MB in the beginning and 28.9 MB in the end (delta: -2.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-10-24 14:29:18,597 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.08 ms. Allocated memory is still 52.4 MB. Free memory was 28.8 MB in the beginning and 27.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 14:29:18,597 INFO L168 Benchmark]: Boogie Preprocessor took 34.98 ms. Allocated memory is still 52.4 MB. Free memory was 27.4 MB in the beginning and 36.2 MB in the end (delta: -8.9 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.1 GB. [2020-10-24 14:29:18,598 INFO L168 Benchmark]: RCFGBuilder took 400.91 ms. Allocated memory is still 52.4 MB. Free memory was 36.1 MB in the beginning and 35.8 MB in the end (delta: 215.5 kB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2020-10-24 14:29:18,599 INFO L168 Benchmark]: TraceAbstraction took 632808.67 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 35.4 MB in the beginning and 33.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. [2020-10-24 14:29:18,603 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 41.9 MB. Free memory is still 26.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 315.45 ms. Allocated memory was 41.9 MB in the beginning and 52.4 MB in the end (delta: 10.5 MB). Free memory was 26.2 MB in the beginning and 28.9 MB in the end (delta: -2.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.08 ms. Allocated memory is still 52.4 MB. Free memory was 28.8 MB in the beginning and 27.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.98 ms. Allocated memory is still 52.4 MB. Free memory was 27.4 MB in the beginning and 36.2 MB in the end (delta: -8.9 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.1 GB. * RCFGBuilder took 400.91 ms. Allocated memory is still 52.4 MB. Free memory was 36.1 MB in the beginning and 35.8 MB in the end (delta: 215.5 kB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 632808.67 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 35.4 MB in the beginning and 33.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...