./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/hard.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 264dba86 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench/hard.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e0f1c45558152fd199606f2551fe8da5ad92b45c ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench/hard.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e0f1c45558152fd199606f2551fe8da5ad92b45c ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-264dba8 [2019-11-21 14:09:52,857 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-21 14:09:52,859 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-21 14:09:52,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-21 14:09:52,878 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-21 14:09:52,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-21 14:09:52,882 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-21 14:09:52,892 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-21 14:09:52,897 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-21 14:09:52,900 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-21 14:09:52,901 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-21 14:09:52,903 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-21 14:09:52,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-21 14:09:52,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-21 14:09:52,908 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-21 14:09:52,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-21 14:09:52,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-21 14:09:52,914 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-21 14:09:52,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-21 14:09:52,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-21 14:09:52,923 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-21 14:09:52,924 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-21 14:09:52,927 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-21 14:09:52,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-21 14:09:52,932 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-21 14:09:52,933 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-21 14:09:52,933 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-21 14:09:52,935 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-21 14:09:52,935 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-21 14:09:52,937 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-21 14:09:52,937 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-21 14:09:52,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-21 14:09:52,939 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-21 14:09:52,939 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-21 14:09:52,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-21 14:09:52,941 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-21 14:09:52,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-21 14:09:52,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-21 14:09:52,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-21 14:09:52,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-21 14:09:52,947 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-21 14:09:52,948 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2019-11-21 14:09:52,966 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-21 14:09:52,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-21 14:09:52,967 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-21 14:09:52,968 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-21 14:09:52,968 INFO L138 SettingsManager]: * Use SBE=true [2019-11-21 14:09:52,968 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-21 14:09:52,968 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-21 14:09:52,969 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-21 14:09:52,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-21 14:09:52,969 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-21 14:09:52,969 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-21 14:09:52,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-21 14:09:52,970 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-21 14:09:52,970 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-21 14:09:52,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-21 14:09:52,971 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-21 14:09:52,971 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-21 14:09:52,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-21 14:09:52,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-21 14:09:52,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-21 14:09:52,972 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-21 14:09:52,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-21 14:09:52,973 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-21 14:09:52,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-21 14:09:52,973 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-21 14:09:52,974 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-21 14:09:52,974 INFO L138 SettingsManager]: * To the following directory=dump/ Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0f1c45558152fd199606f2551fe8da5ad92b45c [2019-11-21 14:09:53,277 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-21 14:09:53,294 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-21 14:09:53,297 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-21 14:09:53,299 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-21 14:09:53,299 INFO L275 PluginConnector]: CDTParser initialized [2019-11-21 14:09:53,300 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/hard.c [2019-11-21 14:09:53,376 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a724cb670/5bf28604cd764ced96c51d896aeeeb78/FLAG9c6dab33b [2019-11-21 14:09:53,837 INFO L306 CDTParser]: Found 1 translation units. [2019-11-21 14:09:53,838 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/hard.c [2019-11-21 14:09:53,843 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a724cb670/5bf28604cd764ced96c51d896aeeeb78/FLAG9c6dab33b [2019-11-21 14:09:54,217 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a724cb670/5bf28604cd764ced96c51d896aeeeb78 [2019-11-21 14:09:54,221 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-21 14:09:54,223 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-21 14:09:54,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-21 14:09:54,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-21 14:09:54,228 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-21 14:09:54,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 02:09:54" (1/1) ... [2019-11-21 14:09:54,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a15442b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:09:54, skipping insertion in model container [2019-11-21 14:09:54,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 02:09:54" (1/1) ... [2019-11-21 14:09:54,241 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-21 14:09:54,259 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-21 14:09:54,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 14:09:54,506 INFO L201 MainTranslator]: Completed pre-run [2019-11-21 14:09:54,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 14:09:54,553 INFO L205 MainTranslator]: Completed translation [2019-11-21 14:09:54,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:09:54 WrapperNode [2019-11-21 14:09:54,554 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-21 14:09:54,555 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-21 14:09:54,555 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-21 14:09:54,555 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-21 14:09:54,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:09:54" (1/1) ... [2019-11-21 14:09:54,571 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:09:54" (1/1) ... [2019-11-21 14:09:54,655 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-21 14:09:54,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-21 14:09:54,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-21 14:09:54,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-21 14:09:54,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:09:54" (1/1) ... [2019-11-21 14:09:54,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:09:54" (1/1) ... [2019-11-21 14:09:54,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:09:54" (1/1) ... [2019-11-21 14:09:54,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:09:54" (1/1) ... [2019-11-21 14:09:54,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:09:54" (1/1) ... [2019-11-21 14:09:54,676 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:09:54" (1/1) ... [2019-11-21 14:09:54,677 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:09:54" (1/1) ... [2019-11-21 14:09:54,679 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-21 14:09:54,680 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-21 14:09:54,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-21 14:09:54,680 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-21 14:09:54,681 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:09:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-21 14:09:54,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-21 14:09:54,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-21 14:09:54,987 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-21 14:09:54,988 INFO L284 CfgBuilder]: Removed 20 assume(true) statements. [2019-11-21 14:09:54,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 02:09:54 BoogieIcfgContainer [2019-11-21 14:09:54,989 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-21 14:09:54,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-21 14:09:54,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-21 14:09:54,994 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-21 14:09:54,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 02:09:54" (1/3) ... [2019-11-21 14:09:54,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@704f0eb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 02:09:54, skipping insertion in model container [2019-11-21 14:09:54,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:09:54" (2/3) ... [2019-11-21 14:09:54,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@704f0eb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 02:09:54, skipping insertion in model container [2019-11-21 14:09:54,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 02:09:54" (3/3) ... [2019-11-21 14:09:54,998 INFO L109 eAbstractionObserver]: Analyzing ICFG hard.c [2019-11-21 14:09:55,011 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-21 14:09:55,020 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-11-21 14:09:55,033 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-11-21 14:09:55,066 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-21 14:09:55,066 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-21 14:09:55,067 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-21 14:09:55,067 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-21 14:09:55,067 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-21 14:09:55,067 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-21 14:09:55,068 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-21 14:09:55,068 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-21 14:09:55,087 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2019-11-21 14:09:55,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-21 14:09:55,093 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 14:09:55,094 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-21 14:09:55,095 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-21 14:09:55,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 14:09:55,100 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-21 14:09:55,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-21 14:09:55,110 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268436263] [2019-11-21 14:09:55,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-21 14:09:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 14:09:55,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 14:09:55,300 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268436263] [2019-11-21 14:09:55,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-21 14:09:55,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-21 14:09:55,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623216189] [2019-11-21 14:09:55,307 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-21 14:09:55,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-21 14:09:55,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-21 14:09:55,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-21 14:09:55,320 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 4 states. [2019-11-21 14:09:55,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 14:09:55,463 INFO L93 Difference]: Finished difference Result 92 states and 127 transitions. [2019-11-21 14:09:55,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-21 14:09:55,465 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-21 14:09:55,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 14:09:55,476 INFO L225 Difference]: With dead ends: 92 [2019-11-21 14:09:55,476 INFO L226 Difference]: Without dead ends: 49 [2019-11-21 14:09:55,480 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-21 14:09:55,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-11-21 14:09:55,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30. [2019-11-21 14:09:55,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-21 14:09:55,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2019-11-21 14:09:55,526 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 4 [2019-11-21 14:09:55,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 14:09:55,527 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2019-11-21 14:09:55,527 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-21 14:09:55,527 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2019-11-21 14:09:55,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-21 14:09:55,527 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 14:09:55,527 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-21 14:09:55,528 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-21 14:09:55,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 14:09:55,528 INFO L82 PathProgramCache]: Analyzing trace with hash 925925231, now seen corresponding path program 1 times [2019-11-21 14:09:55,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-21 14:09:55,529 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148152148] [2019-11-21 14:09:55,529 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-21 14:09:55,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 14:09:55,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 14:09:55,573 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148152148] [2019-11-21 14:09:55,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-21 14:09:55,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-21 14:09:55,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988460668] [2019-11-21 14:09:55,576 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-21 14:09:55,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-21 14:09:55,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-21 14:09:55,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-21 14:09:55,577 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 4 states. [2019-11-21 14:09:55,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 14:09:55,677 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2019-11-21 14:09:55,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-21 14:09:55,677 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-11-21 14:09:55,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 14:09:55,679 INFO L225 Difference]: With dead ends: 49 [2019-11-21 14:09:55,679 INFO L226 Difference]: Without dead ends: 47 [2019-11-21 14:09:55,680 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-21 14:09:55,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-21 14:09:55,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 28. [2019-11-21 14:09:55,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-21 14:09:55,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2019-11-21 14:09:55,688 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 6 [2019-11-21 14:09:55,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 14:09:55,688 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2019-11-21 14:09:55,689 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-21 14:09:55,689 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2019-11-21 14:09:55,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-21 14:09:55,689 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 14:09:55,689 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 14:09:55,690 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-21 14:09:55,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 14:09:55,690 INFO L82 PathProgramCache]: Analyzing trace with hash 756072562, now seen corresponding path program 1 times [2019-11-21 14:09:55,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-21 14:09:55,691 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129828558] [2019-11-21 14:09:55,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-21 14:09:55,702 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-21 14:09:55,702 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1320746500] [2019-11-21 14:09:55,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-21 14:09:55,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 14:09:55,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-21 14:09:55,757 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 14:09:55,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 14:09:55,809 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129828558] [2019-11-21 14:09:55,809 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-21 14:09:55,811 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320746500] [2019-11-21 14:09:55,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-21 14:09:55,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-21 14:09:55,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265706381] [2019-11-21 14:09:55,814 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-21 14:09:55,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-21 14:09:55,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-21 14:09:55,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-21 14:09:55,815 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 4 states. [2019-11-21 14:09:55,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 14:09:55,931 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2019-11-21 14:09:55,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-21 14:09:55,932 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-21 14:09:55,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 14:09:55,933 INFO L225 Difference]: With dead ends: 69 [2019-11-21 14:09:55,933 INFO L226 Difference]: Without dead ends: 47 [2019-11-21 14:09:55,934 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-21 14:09:55,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-21 14:09:55,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 42. [2019-11-21 14:09:55,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-21 14:09:55,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2019-11-21 14:09:55,945 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 8 [2019-11-21 14:09:55,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 14:09:55,946 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2019-11-21 14:09:55,946 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-21 14:09:55,946 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2019-11-21 14:09:55,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-21 14:09:55,947 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 14:09:55,947 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 14:09:56,158 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-21 14:09:56,159 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-21 14:09:56,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 14:09:56,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1354107943, now seen corresponding path program 1 times [2019-11-21 14:09:56,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-21 14:09:56,162 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261408402] [2019-11-21 14:09:56,162 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-21 14:09:56,171 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-21 14:09:56,171 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [574574807] [2019-11-21 14:09:56,172 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-11-21 14:09:56,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-21 14:09:56,201 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-21 14:09:56,202 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 14:09:56,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 14:09:56,224 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261408402] [2019-11-21 14:09:56,225 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-21 14:09:56,226 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574574807] [2019-11-21 14:09:56,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-21 14:09:56,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-21 14:09:56,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773565580] [2019-11-21 14:09:56,227 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-21 14:09:56,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-21 14:09:56,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-21 14:09:56,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-21 14:09:56,229 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 4 states. [2019-11-21 14:09:56,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 14:09:56,326 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2019-11-21 14:09:56,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-21 14:09:56,327 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-21 14:09:56,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 14:09:56,328 INFO L225 Difference]: With dead ends: 60 [2019-11-21 14:09:56,329 INFO L226 Difference]: Without dead ends: 49 [2019-11-21 14:09:56,329 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-21 14:09:56,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-11-21 14:09:56,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2019-11-21 14:09:56,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-21 14:09:56,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2019-11-21 14:09:56,339 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 11 [2019-11-21 14:09:56,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 14:09:56,340 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2019-11-21 14:09:56,340 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-21 14:09:56,340 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2019-11-21 14:09:56,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-21 14:09:56,341 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 14:09:56,342 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-11-21 14:09:56,545 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-21 14:09:56,546 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-21 14:09:56,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 14:09:56,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1240091547, now seen corresponding path program 1 times [2019-11-21 14:09:56,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-21 14:09:56,548 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601880157] [2019-11-21 14:09:56,548 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-21 14:09:56,558 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-21 14:09:56,558 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1063870500] [2019-11-21 14:09:56,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2019-11-21 14:09:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 14:09:56,605 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-21 14:09:56,606 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 14:09:56,637 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 14:09:56,651 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 14:09:56,651 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601880157] [2019-11-21 14:09:56,651 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-21 14:09:56,652 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063870500] [2019-11-21 14:09:56,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-21 14:09:56,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-11-21 14:09:56,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358132746] [2019-11-21 14:09:56,653 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-21 14:09:56,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-21 14:09:56,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-21 14:09:56,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-21 14:09:56,654 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 5 states. [2019-11-21 14:09:56,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 14:09:56,832 INFO L93 Difference]: Finished difference Result 105 states and 122 transitions. [2019-11-21 14:09:56,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-21 14:09:56,833 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-11-21 14:09:56,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 14:09:56,834 INFO L225 Difference]: With dead ends: 105 [2019-11-21 14:09:56,834 INFO L226 Difference]: Without dead ends: 68 [2019-11-21 14:09:56,837 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-21 14:09:56,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-11-21 14:09:56,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 63. [2019-11-21 14:09:56,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-11-21 14:09:56,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2019-11-21 14:09:56,859 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 15 [2019-11-21 14:09:56,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 14:09:56,860 INFO L462 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2019-11-21 14:09:56,860 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-21 14:09:56,860 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2019-11-21 14:09:56,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-21 14:09:56,862 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 14:09:56,862 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1] [2019-11-21 14:09:57,065 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-21 14:09:57,065 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-21 14:09:57,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 14:09:57,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1654747054, now seen corresponding path program 2 times [2019-11-21 14:09:57,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-21 14:09:57,066 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109845241] [2019-11-21 14:09:57,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-21 14:09:57,077 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-21 14:09:57,077 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1952649517] [2019-11-21 14:09:57,077 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2019-11-21 14:09:57,117 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-21 14:09:57,117 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-21 14:09:57,118 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-21 14:09:57,120 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 14:09:57,172 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 14:09:57,187 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 14:09:57,189 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109845241] [2019-11-21 14:09:57,189 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-21 14:09:57,189 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952649517] [2019-11-21 14:09:57,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-21 14:09:57,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-21 14:09:57,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927397199] [2019-11-21 14:09:57,191 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-21 14:09:57,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-21 14:09:57,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-21 14:09:57,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-21 14:09:57,192 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand 6 states. [2019-11-21 14:09:57,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 14:09:57,411 INFO L93 Difference]: Finished difference Result 139 states and 164 transitions. [2019-11-21 14:09:57,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-21 14:09:57,420 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2019-11-21 14:09:57,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 14:09:57,421 INFO L225 Difference]: With dead ends: 139 [2019-11-21 14:09:57,422 INFO L226 Difference]: Without dead ends: 102 [2019-11-21 14:09:57,422 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-21 14:09:57,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2019-11-21 14:09:57,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 82. [2019-11-21 14:09:57,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-11-21 14:09:57,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 93 transitions. [2019-11-21 14:09:57,444 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 93 transitions. Word has length 22 [2019-11-21 14:09:57,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 14:09:57,444 INFO L462 AbstractCegarLoop]: Abstraction has 82 states and 93 transitions. [2019-11-21 14:09:57,444 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-21 14:09:57,445 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 93 transitions. [2019-11-21 14:09:57,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-21 14:09:57,446 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 14:09:57,446 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 14:09:57,647 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-21 14:09:57,648 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-21 14:09:57,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 14:09:57,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1585354123, now seen corresponding path program 1 times [2019-11-21 14:09:57,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-21 14:09:57,650 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26177935] [2019-11-21 14:09:57,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-21 14:09:57,659 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-21 14:09:57,659 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2049666797] [2019-11-21 14:09:57,659 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2019-11-21 14:09:57,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 14:09:57,698 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 27 conjunts are in the unsatisfiable core [2019-11-21 14:09:57,700 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 14:09:57,784 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 14:09:57,798 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 14:09:57,799 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26177935] [2019-11-21 14:09:57,799 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-21 14:09:57,799 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049666797] [2019-11-21 14:09:57,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-21 14:09:57,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-21 14:09:57,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717847496] [2019-11-21 14:09:57,801 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-21 14:09:57,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-21 14:09:57,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-21 14:09:57,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-21 14:09:57,802 INFO L87 Difference]: Start difference. First operand 82 states and 93 transitions. Second operand 6 states. [2019-11-21 14:09:57,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 14:09:57,985 INFO L93 Difference]: Finished difference Result 99 states and 109 transitions. [2019-11-21 14:09:57,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-21 14:09:57,986 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2019-11-21 14:09:57,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 14:09:57,987 INFO L225 Difference]: With dead ends: 99 [2019-11-21 14:09:57,988 INFO L226 Difference]: Without dead ends: 97 [2019-11-21 14:09:57,988 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-21 14:09:57,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2019-11-21 14:09:58,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 90. [2019-11-21 14:09:58,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2019-11-21 14:09:58,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 101 transitions. [2019-11-21 14:09:58,003 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 101 transitions. Word has length 24 [2019-11-21 14:09:58,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 14:09:58,004 INFO L462 AbstractCegarLoop]: Abstraction has 90 states and 101 transitions. [2019-11-21 14:09:58,004 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-21 14:09:58,004 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 101 transitions. [2019-11-21 14:09:58,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-21 14:09:58,005 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 14:09:58,005 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 14:09:58,209 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-21 14:09:58,210 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-21 14:09:58,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 14:09:58,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1185426063, now seen corresponding path program 1 times [2019-11-21 14:09:58,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-21 14:09:58,212 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540833539] [2019-11-21 14:09:58,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-21 14:09:58,220 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-21 14:09:58,221 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1130050959] [2019-11-21 14:09:58,221 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2019-11-21 14:09:58,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 14:09:58,261 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-21 14:09:58,263 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 14:09:58,317 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-21 14:09:58,317 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540833539] [2019-11-21 14:09:58,318 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-21 14:09:58,318 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130050959] [2019-11-21 14:09:58,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-21 14:09:58,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-21 14:09:58,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489172797] [2019-11-21 14:09:58,320 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-21 14:09:58,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-21 14:09:58,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-21 14:09:58,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-21 14:09:58,322 INFO L87 Difference]: Start difference. First operand 90 states and 101 transitions. Second operand 6 states. [2019-11-21 14:09:58,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 14:09:58,459 INFO L93 Difference]: Finished difference Result 120 states and 130 transitions. [2019-11-21 14:09:58,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-21 14:09:58,459 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2019-11-21 14:09:58,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 14:09:58,460 INFO L225 Difference]: With dead ends: 120 [2019-11-21 14:09:58,461 INFO L226 Difference]: Without dead ends: 105 [2019-11-21 14:09:58,461 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-11-21 14:09:58,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2019-11-21 14:09:58,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 89. [2019-11-21 14:09:58,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2019-11-21 14:09:58,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 102 transitions. [2019-11-21 14:09:58,485 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 102 transitions. Word has length 29 [2019-11-21 14:09:58,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 14:09:58,486 INFO L462 AbstractCegarLoop]: Abstraction has 89 states and 102 transitions. [2019-11-21 14:09:58,486 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-21 14:09:58,486 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 102 transitions. [2019-11-21 14:09:58,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-21 14:09:58,487 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 14:09:58,487 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1] [2019-11-21 14:09:58,694 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-21 14:09:58,695 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-21 14:09:58,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 14:09:58,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1363992507, now seen corresponding path program 3 times [2019-11-21 14:09:58,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-21 14:09:58,696 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890347358] [2019-11-21 14:09:58,697 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-21 14:09:58,705 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-21 14:09:58,706 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2017235792] [2019-11-21 14:09:58,706 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2019-11-21 14:09:58,739 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-21 14:09:58,739 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-21 14:09:58,740 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-21 14:09:58,742 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 14:09:58,767 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 14:09:58,805 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 14:09:58,861 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-11-21 14:09:58,861 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890347358] [2019-11-21 14:09:58,861 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-21 14:09:58,862 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017235792] [2019-11-21 14:09:58,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-21 14:09:58,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-11-21 14:09:58,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043585051] [2019-11-21 14:09:58,863 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-21 14:09:58,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-21 14:09:58,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-21 14:09:58,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-21 14:09:58,864 INFO L87 Difference]: Start difference. First operand 89 states and 102 transitions. Second operand 7 states. [2019-11-21 14:09:59,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 14:09:59,192 INFO L93 Difference]: Finished difference Result 113 states and 129 transitions. [2019-11-21 14:09:59,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-21 14:09:59,194 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2019-11-21 14:09:59,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 14:09:59,197 INFO L225 Difference]: With dead ends: 113 [2019-11-21 14:09:59,197 INFO L226 Difference]: Without dead ends: 103 [2019-11-21 14:09:59,197 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2019-11-21 14:09:59,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2019-11-21 14:09:59,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2019-11-21 14:09:59,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2019-11-21 14:09:59,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 116 transitions. [2019-11-21 14:09:59,210 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 116 transitions. Word has length 29 [2019-11-21 14:09:59,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 14:09:59,210 INFO L462 AbstractCegarLoop]: Abstraction has 101 states and 116 transitions. [2019-11-21 14:09:59,210 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-21 14:09:59,210 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 116 transitions. [2019-11-21 14:09:59,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-21 14:09:59,211 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 14:09:59,211 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 14:09:59,416 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-21 14:09:59,417 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-21 14:09:59,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 14:09:59,417 INFO L82 PathProgramCache]: Analyzing trace with hash -803819852, now seen corresponding path program 2 times [2019-11-21 14:09:59,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-21 14:09:59,419 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080717385] [2019-11-21 14:09:59,419 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-21 14:09:59,428 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-21 14:09:59,429 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [707329646] [2019-11-21 14:09:59,429 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2019-11-21 14:09:59,461 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-21 14:09:59,461 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-21 14:09:59,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 31 conjunts are in the unsatisfiable core [2019-11-21 14:09:59,464 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 14:09:59,536 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 14:09:59,552 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 14:09:59,552 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080717385] [2019-11-21 14:09:59,552 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-21 14:09:59,553 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707329646] [2019-11-21 14:09:59,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-21 14:09:59,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-11-21 14:09:59,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371968241] [2019-11-21 14:09:59,554 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-21 14:09:59,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-21 14:09:59,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-21 14:09:59,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-21 14:09:59,555 INFO L87 Difference]: Start difference. First operand 101 states and 116 transitions. Second operand 7 states. [2019-11-21 14:09:59,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 14:09:59,832 INFO L93 Difference]: Finished difference Result 113 states and 127 transitions. [2019-11-21 14:09:59,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-21 14:09:59,833 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2019-11-21 14:09:59,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 14:09:59,834 INFO L225 Difference]: With dead ends: 113 [2019-11-21 14:09:59,834 INFO L226 Difference]: Without dead ends: 111 [2019-11-21 14:09:59,834 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-21 14:09:59,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2019-11-21 14:09:59,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 103. [2019-11-21 14:09:59,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2019-11-21 14:09:59,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 117 transitions. [2019-11-21 14:09:59,845 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 117 transitions. Word has length 31 [2019-11-21 14:09:59,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 14:09:59,845 INFO L462 AbstractCegarLoop]: Abstraction has 103 states and 117 transitions. [2019-11-21 14:09:59,845 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-21 14:09:59,845 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 117 transitions. [2019-11-21 14:09:59,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-21 14:09:59,847 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 14:09:59,847 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2019-11-21 14:10:00,050 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-21 14:10:00,051 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-21 14:10:00,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 14:10:00,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1656121185, now seen corresponding path program 3 times [2019-11-21 14:10:00,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-21 14:10:00,052 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301186528] [2019-11-21 14:10:00,053 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-21 14:10:00,060 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-21 14:10:00,060 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [369671293] [2019-11-21 14:10:00,061 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2019-11-21 14:10:00,275 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-21 14:10:00,275 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-21 14:10:00,276 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 40 conjunts are in the unsatisfiable core [2019-11-21 14:10:00,278 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 14:10:00,436 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 14:10:00,457 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 14:10:00,458 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301186528] [2019-11-21 14:10:00,458 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-21 14:10:00,458 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369671293] [2019-11-21 14:10:00,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-21 14:10:00,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2019-11-21 14:10:00,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146553003] [2019-11-21 14:10:00,459 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-21 14:10:00,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-21 14:10:00,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-21 14:10:00,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-21 14:10:00,460 INFO L87 Difference]: Start difference. First operand 103 states and 117 transitions. Second operand 9 states. [2019-11-21 14:10:00,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 14:10:00,825 INFO L93 Difference]: Finished difference Result 115 states and 126 transitions. [2019-11-21 14:10:00,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-21 14:10:00,826 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2019-11-21 14:10:00,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 14:10:00,827 INFO L225 Difference]: With dead ends: 115 [2019-11-21 14:10:00,827 INFO L226 Difference]: Without dead ends: 104 [2019-11-21 14:10:00,828 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2019-11-21 14:10:00,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2019-11-21 14:10:00,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2019-11-21 14:10:00,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2019-11-21 14:10:00,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 113 transitions. [2019-11-21 14:10:00,837 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 113 transitions. Word has length 37 [2019-11-21 14:10:00,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 14:10:00,837 INFO L462 AbstractCegarLoop]: Abstraction has 101 states and 113 transitions. [2019-11-21 14:10:00,837 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-21 14:10:00,838 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 113 transitions. [2019-11-21 14:10:00,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-21 14:10:00,839 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 14:10:00,839 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-21 14:10:01,042 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-21 14:10:01,045 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-21 14:10:01,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 14:10:01,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1263094175, now seen corresponding path program 1 times [2019-11-21 14:10:01,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-21 14:10:01,046 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763821431] [2019-11-21 14:10:01,046 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-21 14:10:01,054 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-21 14:10:01,054 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [262493540] [2019-11-21 14:10:01,054 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-21 14:10:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 14:10:01,096 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-21 14:10:01,098 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 14:10:01,138 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 14:10:01,139 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 14:10:01,235 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-21 14:10:01,236 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763821431] [2019-11-21 14:10:01,236 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-21 14:10:01,236 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262493540] [2019-11-21 14:10:01,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-21 14:10:01,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-21 14:10:01,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626268881] [2019-11-21 14:10:01,238 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-21 14:10:01,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-21 14:10:01,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-21 14:10:01,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-21 14:10:01,239 INFO L87 Difference]: Start difference. First operand 101 states and 113 transitions. Second operand 6 states. [2019-11-21 14:10:09,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 14:10:09,883 INFO L93 Difference]: Finished difference Result 146 states and 159 transitions. [2019-11-21 14:10:09,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-21 14:10:09,883 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2019-11-21 14:10:09,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 14:10:09,885 INFO L225 Difference]: With dead ends: 146 [2019-11-21 14:10:09,885 INFO L226 Difference]: Without dead ends: 103 [2019-11-21 14:10:09,886 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-21 14:10:09,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2019-11-21 14:10:09,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 79. [2019-11-21 14:10:09,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2019-11-21 14:10:09,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2019-11-21 14:10:09,894 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 37 [2019-11-21 14:10:09,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 14:10:09,894 INFO L462 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2019-11-21 14:10:09,894 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-21 14:10:09,895 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2019-11-21 14:10:09,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-21 14:10:09,896 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 14:10:09,896 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 14:10:10,096 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-21 14:10:10,097 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-21 14:10:10,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 14:10:10,098 INFO L82 PathProgramCache]: Analyzing trace with hash -2081381013, now seen corresponding path program 4 times [2019-11-21 14:10:10,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-21 14:10:10,100 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417634533] [2019-11-21 14:10:10,100 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-21 14:10:10,112 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-21 14:10:10,112 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1548962160] [2019-11-21 14:10:10,112 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-21 14:10:10,162 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-21 14:10:10,162 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-21 14:10:10,164 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 43 conjunts are in the unsatisfiable core [2019-11-21 14:10:10,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 14:10:10,183 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 14:10:10,207 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 14:10:10,249 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 14:10:10,992 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 14:10:10,997 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 14:10:10,998 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 14:10:10,999 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 14:10:11,001 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 14:10:11,001 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 14:10:11,003 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 14:10:11,004 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 14:10:28,384 WARN L192 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 41 [2019-11-21 14:10:41,763 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 14:10:42,242 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 33 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 14:10:42,243 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417634533] [2019-11-21 14:10:42,243 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-21 14:10:42,243 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548962160] [2019-11-21 14:10:42,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-21 14:10:42,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2019-11-21 14:10:42,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263822992] [2019-11-21 14:10:42,245 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-21 14:10:42,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-21 14:10:42,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-21 14:10:42,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=143, Unknown=14, NotChecked=0, Total=210 [2019-11-21 14:10:42,246 INFO L87 Difference]: Start difference. First operand 79 states and 84 transitions. Second operand 15 states. [2019-11-21 14:11:24,288 WARN L192 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 41 DAG size of output: 22 [2019-11-21 14:12:17,503 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2019-11-21 14:12:17,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-21 14:12:17,704 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-21 14:12:17,706 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:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) 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.modelcheckerutils.smt.managedscript.ManagedScript.checkSat(ManagedScript.java:140) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:84) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:899) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$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:234) 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$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1066) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:968) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:188) 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:698) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:627) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:454) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$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:205) ... 44 more [2019-11-21 14:12:17,711 INFO L168 Benchmark]: Toolchain (without parser) took 143488.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 210.8 MB). Free memory was 960.4 MB in the beginning and 838.3 MB in the end (delta: 122.1 MB). Peak memory consumption was 332.9 MB. Max. memory is 11.5 GB. [2019-11-21 14:12:17,712 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-21 14:12:17,712 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.74 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-21 14:12:17,713 INFO L168 Benchmark]: Boogie Procedure Inliner took 100.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -195.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. [2019-11-21 14:12:17,714 INFO L168 Benchmark]: Boogie Preprocessor took 23.61 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-21 14:12:17,714 INFO L168 Benchmark]: RCFGBuilder took 309.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. [2019-11-21 14:12:17,715 INFO L168 Benchmark]: TraceAbstraction took 142718.62 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 61.9 MB). Free memory was 1.1 GB in the beginning and 838.3 MB in the end (delta: 280.9 MB). Peak memory consumption was 342.8 MB. Max. memory is 11.5 GB. [2019-11-21 14:12:17,719 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 330.74 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 100.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -195.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.61 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 309.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 142718.62 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 61.9 MB). Free memory was 1.1 GB in the beginning and 838.3 MB in the end (delta: 280.9 MB). Peak memory consumption was 342.8 MB. Max. memory is 11.5 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:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-264dba8 [2019-11-21 14:12:19,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-21 14:12:19,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-21 14:12:19,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-21 14:12:19,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-21 14:12:19,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-21 14:12:19,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-21 14:12:19,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-21 14:12:19,567 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-21 14:12:19,572 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-21 14:12:19,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-21 14:12:19,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-21 14:12:19,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-21 14:12:19,578 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-21 14:12:19,580 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-21 14:12:19,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-21 14:12:19,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-21 14:12:19,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-21 14:12:19,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-21 14:12:19,592 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-21 14:12:19,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-21 14:12:19,601 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-21 14:12:19,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-21 14:12:19,604 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-21 14:12:19,607 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-21 14:12:19,608 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-21 14:12:19,608 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-21 14:12:19,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-21 14:12:19,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-21 14:12:19,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-21 14:12:19,612 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-21 14:12:19,613 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-21 14:12:19,614 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-21 14:12:19,615 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-21 14:12:19,617 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-21 14:12:19,617 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-21 14:12:19,618 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-21 14:12:19,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-21 14:12:19,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-21 14:12:19,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-21 14:12:19,621 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-21 14:12:19,622 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2019-11-21 14:12:19,658 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-21 14:12:19,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-21 14:12:19,664 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-21 14:12:19,665 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-21 14:12:19,665 INFO L138 SettingsManager]: * Use SBE=true [2019-11-21 14:12:19,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-21 14:12:19,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-21 14:12:19,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-21 14:12:19,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-21 14:12:19,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-21 14:12:19,669 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-21 14:12:19,669 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-21 14:12:19,669 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-21 14:12:19,671 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-21 14:12:19,671 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-21 14:12:19,671 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-21 14:12:19,672 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-21 14:12:19,673 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-21 14:12:19,673 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-21 14:12:19,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-21 14:12:19,674 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-21 14:12:19,674 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-21 14:12:19,674 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-21 14:12:19,675 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-21 14:12:19,675 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-21 14:12:19,675 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-21 14:12:19,675 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-21 14:12:19,676 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2019-11-21 14:12:19,676 INFO L138 SettingsManager]: * To the following directory=dump/ Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0f1c45558152fd199606f2551fe8da5ad92b45c [2019-11-21 14:12:20,016 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-21 14:12:20,029 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-21 14:12:20,033 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-21 14:12:20,034 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-21 14:12:20,035 INFO L275 PluginConnector]: CDTParser initialized [2019-11-21 14:12:20,035 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/hard.c [2019-11-21 14:12:20,110 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/148a2e4d0/ea419860650b436db8f8a9e56f29ecb2/FLAG41e731777 [2019-11-21 14:12:20,542 INFO L306 CDTParser]: Found 1 translation units. [2019-11-21 14:12:20,543 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/hard.c [2019-11-21 14:12:20,550 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/148a2e4d0/ea419860650b436db8f8a9e56f29ecb2/FLAG41e731777 [2019-11-21 14:12:20,972 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/148a2e4d0/ea419860650b436db8f8a9e56f29ecb2 [2019-11-21 14:12:20,975 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-21 14:12:20,977 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-21 14:12:20,978 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-21 14:12:20,978 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-21 14:12:20,982 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-21 14:12:20,986 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 02:12:20" (1/1) ... [2019-11-21 14:12:20,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e8f1ff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:12:20, skipping insertion in model container [2019-11-21 14:12:20,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 02:12:20" (1/1) ... [2019-11-21 14:12:20,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-21 14:12:21,018 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-21 14:12:21,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 14:12:21,263 INFO L201 MainTranslator]: Completed pre-run [2019-11-21 14:12:21,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 14:12:21,318 INFO L205 MainTranslator]: Completed translation [2019-11-21 14:12:21,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:12:21 WrapperNode [2019-11-21 14:12:21,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-21 14:12:21,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-21 14:12:21,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-21 14:12:21,320 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-21 14:12:21,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:12:21" (1/1) ... [2019-11-21 14:12:21,390 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:12:21" (1/1) ... [2019-11-21 14:12:21,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-21 14:12:21,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-21 14:12:21,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-21 14:12:21,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-21 14:12:21,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:12:21" (1/1) ... [2019-11-21 14:12:21,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:12:21" (1/1) ... [2019-11-21 14:12:21,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:12:21" (1/1) ... [2019-11-21 14:12:21,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:12:21" (1/1) ... [2019-11-21 14:12:21,439 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:12:21" (1/1) ... [2019-11-21 14:12:21,444 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:12:21" (1/1) ... [2019-11-21 14:12:21,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:12:21" (1/1) ... [2019-11-21 14:12:21,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-21 14:12:21,449 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-21 14:12:21,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-21 14:12:21,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-21 14:12:21,450 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:12:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-21 14:12:21,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-21 14:12:21,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-21 14:12:21,889 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-21 14:12:21,889 INFO L284 CfgBuilder]: Removed 20 assume(true) statements. [2019-11-21 14:12:21,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 02:12:21 BoogieIcfgContainer [2019-11-21 14:12:21,892 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-21 14:12:21,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-21 14:12:21,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-21 14:12:21,896 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-21 14:12:21,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 02:12:20" (1/3) ... [2019-11-21 14:12:21,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4febbb66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 02:12:21, skipping insertion in model container [2019-11-21 14:12:21,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:12:21" (2/3) ... [2019-11-21 14:12:21,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4febbb66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 02:12:21, skipping insertion in model container [2019-11-21 14:12:21,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 02:12:21" (3/3) ... [2019-11-21 14:12:21,909 INFO L109 eAbstractionObserver]: Analyzing ICFG hard.c [2019-11-21 14:12:21,919 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-21 14:12:21,924 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-11-21 14:12:21,934 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-11-21 14:12:21,959 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-21 14:12:21,959 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-21 14:12:21,959 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-21 14:12:21,959 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-21 14:12:21,959 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-21 14:12:21,960 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-21 14:12:21,960 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-21 14:12:21,960 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-21 14:12:21,978 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2019-11-21 14:12:21,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-21 14:12:21,984 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 14:12:21,985 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-21 14:12:21,985 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-21 14:12:21,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 14:12:21,992 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-21 14:12:22,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 14:12:22,004 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1380005693] [2019-11-21 14:12:22,004 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 14:12:22,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 14:12:22,081 INFO L255 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-21 14:12:22,087 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 14:12:22,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 14:12:22,141 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 14:12:22,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 14:12:22,160 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1380005693] [2019-11-21 14:12:22,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 14:12:22,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-21 14:12:22,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993015420] [2019-11-21 14:12:22,166 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-21 14:12:22,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 14:12:22,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-21 14:12:22,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-21 14:12:22,183 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 5 states. [2019-11-21 14:12:22,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 14:12:22,467 INFO L93 Difference]: Finished difference Result 92 states and 127 transitions. [2019-11-21 14:12:22,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-21 14:12:22,469 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2019-11-21 14:12:22,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 14:12:22,479 INFO L225 Difference]: With dead ends: 92 [2019-11-21 14:12:22,479 INFO L226 Difference]: Without dead ends: 49 [2019-11-21 14:12:22,483 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-21 14:12:22,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-11-21 14:12:22,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30. [2019-11-21 14:12:22,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-21 14:12:22,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2019-11-21 14:12:22,525 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 4 [2019-11-21 14:12:22,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 14:12:22,525 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2019-11-21 14:12:22,525 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-21 14:12:22,525 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2019-11-21 14:12:22,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-21 14:12:22,526 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 14:12:22,526 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-21 14:12:22,737 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 14:12:22,737 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-21 14:12:22,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 14:12:22,738 INFO L82 PathProgramCache]: Analyzing trace with hash 925925231, now seen corresponding path program 1 times [2019-11-21 14:12:22,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 14:12:22,738 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [34871911] [2019-11-21 14:12:22,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 14:12:22,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 14:12:22,788 INFO L255 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-21 14:12:22,789 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 14:12:22,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 14:12:22,824 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 14:12:22,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 14:12:22,839 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [34871911] [2019-11-21 14:12:22,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 14:12:22,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-21 14:12:22,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450918820] [2019-11-21 14:12:22,841 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-21 14:12:22,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 14:12:22,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-21 14:12:22,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-21 14:12:22,845 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 5 states. [2019-11-21 14:12:23,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 14:12:23,060 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2019-11-21 14:12:23,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-21 14:12:23,061 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-11-21 14:12:23,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 14:12:23,062 INFO L225 Difference]: With dead ends: 49 [2019-11-21 14:12:23,062 INFO L226 Difference]: Without dead ends: 47 [2019-11-21 14:12:23,063 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-21 14:12:23,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-21 14:12:23,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 28. [2019-11-21 14:12:23,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-21 14:12:23,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2019-11-21 14:12:23,073 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 6 [2019-11-21 14:12:23,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 14:12:23,073 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2019-11-21 14:12:23,074 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-21 14:12:23,074 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2019-11-21 14:12:23,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-21 14:12:23,074 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 14:12:23,075 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 14:12:23,276 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 14:12:23,277 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-21 14:12:23,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 14:12:23,279 INFO L82 PathProgramCache]: Analyzing trace with hash 756072562, now seen corresponding path program 1 times [2019-11-21 14:12:23,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 14:12:23,280 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [672618452] [2019-11-21 14:12:23,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 14:12:23,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 14:12:23,372 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-21 14:12:23,373 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 14:12:23,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 14:12:23,398 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 14:12:23,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 14:12:23,479 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [672618452] [2019-11-21 14:12:23,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 14:12:23,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-21 14:12:23,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808869557] [2019-11-21 14:12:23,480 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-21 14:12:23,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 14:12:23,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-21 14:12:23,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-21 14:12:23,481 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 6 states. [2019-11-21 14:12:26,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 14:12:26,382 INFO L93 Difference]: Finished difference Result 85 states and 96 transitions. [2019-11-21 14:12:26,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-21 14:12:26,383 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2019-11-21 14:12:26,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 14:12:26,385 INFO L225 Difference]: With dead ends: 85 [2019-11-21 14:12:26,385 INFO L226 Difference]: Without dead ends: 63 [2019-11-21 14:12:26,386 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-11-21 14:12:26,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-11-21 14:12:26,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 54. [2019-11-21 14:12:26,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-11-21 14:12:26,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2019-11-21 14:12:26,402 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 8 [2019-11-21 14:12:26,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 14:12:26,402 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2019-11-21 14:12:26,402 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-21 14:12:26,403 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2019-11-21 14:12:26,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-21 14:12:26,403 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 14:12:26,403 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 14:12:26,606 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 14:12:26,608 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-21 14:12:26,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 14:12:26,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1354107943, now seen corresponding path program 1 times [2019-11-21 14:12:26,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 14:12:26,610 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1278471051] [2019-11-21 14:12:26,610 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 14:12:26,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 14:12:26,710 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-21 14:12:26,711 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 14:12:26,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 14:12:26,740 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 14:12:26,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 14:12:26,800 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1278471051] [2019-11-21 14:12:26,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 14:12:26,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-21 14:12:26,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290342172] [2019-11-21 14:12:26,801 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-21 14:12:26,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 14:12:26,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-21 14:12:26,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-21 14:12:26,802 INFO L87 Difference]: Start difference. First operand 54 states and 61 transitions. Second operand 5 states. [2019-11-21 14:12:27,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 14:12:27,045 INFO L93 Difference]: Finished difference Result 72 states and 80 transitions. [2019-11-21 14:12:27,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-21 14:12:27,046 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-11-21 14:12:27,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 14:12:27,048 INFO L225 Difference]: With dead ends: 72 [2019-11-21 14:12:27,048 INFO L226 Difference]: Without dead ends: 61 [2019-11-21 14:12:27,049 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-21 14:12:27,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-11-21 14:12:27,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2019-11-21 14:12:27,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-11-21 14:12:27,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2019-11-21 14:12:27,062 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 11 [2019-11-21 14:12:27,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 14:12:27,062 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2019-11-21 14:12:27,062 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-21 14:12:27,062 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2019-11-21 14:12:27,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-21 14:12:27,063 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 14:12:27,064 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1] [2019-11-21 14:12:27,269 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 14:12:27,270 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-21 14:12:27,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 14:12:27,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1654747054, now seen corresponding path program 1 times [2019-11-21 14:12:27,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 14:12:27,273 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1680801285] [2019-11-21 14:12:27,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 14:12:27,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 14:12:27,468 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-21 14:12:27,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 14:12:27,547 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 14:12:27,547 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 14:12:29,971 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 2 refuted. 7 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 14:12:29,971 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1680801285] [2019-11-21 14:12:29,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-21 14:12:29,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2019-11-21 14:12:29,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761737538] [2019-11-21 14:12:29,973 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-21 14:12:29,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 14:12:29,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-21 14:12:29,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=60, Unknown=1, NotChecked=0, Total=90 [2019-11-21 14:12:29,974 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand 10 states. [2019-11-21 14:12:33,517 WARN L192 SmtUtils]: Spent 2.12 s on a formula simplification that was a NOOP. DAG size: 19 [2019-11-21 14:12:35,843 WARN L192 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 14 [2019-11-21 14:12:38,253 WARN L192 SmtUtils]: Spent 2.11 s on a formula simplification that was a NOOP. DAG size: 18 [2019-11-21 14:12:42,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 14:12:42,098 INFO L93 Difference]: Finished difference Result 112 states and 126 transitions. [2019-11-21 14:12:42,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-21 14:12:42,099 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2019-11-21 14:12:42,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 14:12:42,101 INFO L225 Difference]: With dead ends: 112 [2019-11-21 14:12:42,101 INFO L226 Difference]: Without dead ends: 98 [2019-11-21 14:12:42,102 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=142, Invalid=277, Unknown=1, NotChecked=0, Total=420 [2019-11-21 14:12:42,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2019-11-21 14:12:42,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 46. [2019-11-21 14:12:42,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-11-21 14:12:42,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2019-11-21 14:12:42,121 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 22 [2019-11-21 14:12:42,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 14:12:42,123 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2019-11-21 14:12:42,123 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-21 14:12:42,124 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2019-11-21 14:12:42,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-21 14:12:42,130 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 14:12:42,130 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 14:12:42,335 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 14:12:42,337 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-21 14:12:42,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 14:12:42,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1585354123, now seen corresponding path program 1 times [2019-11-21 14:12:42,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 14:12:42,341 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [575919521] [2019-11-21 14:12:42,341 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 14:12:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 14:12:42,556 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-21 14:12:42,558 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 14:12:43,029 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2019-11-21 14:12:43,233 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2019-11-21 14:12:43,236 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 14:12:43,581 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 14:12:43,581 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 14:12:45,909 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2019-11-21 14:12:47,450 WARN L192 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2019-11-21 14:12:49,298 WARN L192 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2019-11-21 14:12:49,303 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 14:12:49,303 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [575919521] [2019-11-21 14:12:49,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-21 14:12:49,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2019-11-21 14:12:49,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710987] [2019-11-21 14:12:49,304 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-21 14:12:49,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 14:12:49,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-21 14:12:49,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2019-11-21 14:12:49,306 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 14 states. [2019-11-21 14:12:52,871 WARN L192 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2019-11-21 14:12:54,364 WARN L192 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2019-11-21 14:12:55,865 WARN L192 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2019-11-21 14:12:56,982 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2019-11-21 14:12:59,723 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2019-11-21 14:13:04,877 WARN L192 SmtUtils]: Spent 1.30 s on a formula simplification that was a NOOP. DAG size: 34 [2019-11-21 14:13:12,879 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2019-11-21 14:13:19,017 WARN L192 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 37 [2019-11-21 14:13:22,168 WARN L192 SmtUtils]: Spent 902.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2019-11-21 14:13:24,674 WARN L192 SmtUtils]: Spent 652.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2019-11-21 14:13:28,544 WARN L192 SmtUtils]: Spent 712.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2019-11-21 14:13:30,594 WARN L192 SmtUtils]: Spent 901.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2019-11-21 14:13:34,695 WARN L192 SmtUtils]: Spent 637.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2019-11-21 14:13:37,048 WARN L192 SmtUtils]: Spent 801.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2019-11-21 14:13:39,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 14:13:39,824 INFO L93 Difference]: Finished difference Result 155 states and 169 transitions. [2019-11-21 14:13:39,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-11-21 14:13:39,845 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 24 [2019-11-21 14:13:39,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 14:13:39,848 INFO L225 Difference]: With dead ends: 155 [2019-11-21 14:13:39,848 INFO L226 Difference]: Without dead ends: 129 [2019-11-21 14:13:39,851 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 33.5s TimeCoverageRelationStatistics Valid=250, Invalid=806, Unknown=0, NotChecked=0, Total=1056 [2019-11-21 14:13:39,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2019-11-21 14:13:39,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 65. [2019-11-21 14:13:39,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-11-21 14:13:39,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2019-11-21 14:13:39,867 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 24 [2019-11-21 14:13:39,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 14:13:39,867 INFO L462 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2019-11-21 14:13:39,868 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-21 14:13:39,868 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2019-11-21 14:13:39,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-21 14:13:39,869 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 14:13:39,869 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 14:13:40,074 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 14:13:40,075 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-21 14:13:40,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 14:13:40,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1187920850, now seen corresponding path program 1 times [2019-11-21 14:13:40,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 14:13:40,077 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [545532009] [2019-11-21 14:13:40,078 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 14:13:40,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 14:13:40,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-21 14:13:40,324 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 14:13:41,219 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2019-11-21 14:13:41,228 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 14:13:41,622 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 14:13:41,622 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 14:13:42,845 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2019-11-21 14:13:44,303 WARN L192 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2019-11-21 14:13:46,316 WARN L192 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2019-11-21 14:13:46,330 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 14:13:46,331 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [545532009] [2019-11-21 14:13:46,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-21 14:13:46,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2019-11-21 14:13:46,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345224585] [2019-11-21 14:13:46,332 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-21 14:13:46,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 14:13:46,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-21 14:13:46,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2019-11-21 14:13:46,333 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand 12 states. [2019-11-21 14:13:54,256 WARN L192 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2019-11-21 14:13:55,954 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2019-11-21 14:14:00,037 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2019-11-21 14:14:04,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 14:14:04,917 INFO L93 Difference]: Finished difference Result 110 states and 124 transitions. [2019-11-21 14:14:04,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-21 14:14:04,918 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2019-11-21 14:14:04,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 14:14:04,919 INFO L225 Difference]: With dead ends: 110 [2019-11-21 14:14:04,919 INFO L226 Difference]: Without dead ends: 84 [2019-11-21 14:14:04,921 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2019-11-21 14:14:04,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2019-11-21 14:14:04,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 66. [2019-11-21 14:14:04,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-11-21 14:14:04,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2019-11-21 14:14:04,938 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 26 [2019-11-21 14:14:04,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 14:14:04,938 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2019-11-21 14:14:04,939 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-21 14:14:04,939 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2019-11-21 14:14:04,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-21 14:14:04,940 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 14:14:04,940 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 14:14:05,144 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 14:14:05,146 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-21 14:14:05,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 14:14:05,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1185426063, now seen corresponding path program 1 times [2019-11-21 14:14:05,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 14:14:05,147 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [545770512] [2019-11-21 14:14:05,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 14:14:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 14:14:05,435 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-21 14:14:05,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 14:14:05,535 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-21 14:14:05,535 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 14:14:06,189 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-21 14:14:06,189 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [545770512] [2019-11-21 14:14:06,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-21 14:14:06,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2019-11-21 14:14:06,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799185419] [2019-11-21 14:14:06,190 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-21 14:14:06,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 14:14:06,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-21 14:14:06,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-21 14:14:06,191 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand 9 states. [2019-11-21 14:14:07,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 14:14:07,293 INFO L93 Difference]: Finished difference Result 89 states and 93 transitions. [2019-11-21 14:14:07,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-21 14:14:07,297 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2019-11-21 14:14:07,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 14:14:07,298 INFO L225 Difference]: With dead ends: 89 [2019-11-21 14:14:07,299 INFO L226 Difference]: Without dead ends: 74 [2019-11-21 14:14:07,299 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2019-11-21 14:14:07,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2019-11-21 14:14:07,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 58. [2019-11-21 14:14:07,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-11-21 14:14:07,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2019-11-21 14:14:07,317 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 29 [2019-11-21 14:14:07,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 14:14:07,318 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2019-11-21 14:14:07,318 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-21 14:14:07,318 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2019-11-21 14:14:07,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-21 14:14:07,323 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 14:14:07,323 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 14:14:07,528 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 14:14:07,529 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-21 14:14:07,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 14:14:07,530 INFO L82 PathProgramCache]: Analyzing trace with hash -803819852, now seen corresponding path program 2 times [2019-11-21 14:14:07,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 14:14:07,531 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1250925041] [2019-11-21 14:14:07,531 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 14:14:07,862 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-21 14:14:07,863 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2019-11-21 14:14:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-21 14:14:08,177 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-21 14:14:08,177 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-21 14:14:08,394 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 14:14:08,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 02:14:08 BoogieIcfgContainer [2019-11-21 14:14:08,429 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-21 14:14:08,430 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-21 14:14:08,430 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-21 14:14:08,430 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-21 14:14:08,431 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 02:12:21" (3/4) ... [2019-11-21 14:14:08,433 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-21 14:14:08,489 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-21 14:14:08,490 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-21 14:14:08,491 INFO L168 Benchmark]: Toolchain (without parser) took 107514.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.4 MB). Free memory was 961.7 MB in the beginning and 924.7 MB in the end (delta: 37.1 MB). Peak memory consumption was 207.5 MB. Max. memory is 11.5 GB. [2019-11-21 14:14:08,492 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-21 14:14:08,492 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.51 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-21 14:14:08,493 INFO L168 Benchmark]: Boogie Procedure Inliner took 104.51 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.1 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -143.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2019-11-21 14:14:08,494 INFO L168 Benchmark]: Boogie Preprocessor took 23.75 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-21 14:14:08,495 INFO L168 Benchmark]: RCFGBuilder took 443.05 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 11.5 GB. [2019-11-21 14:14:08,495 INFO L168 Benchmark]: TraceAbstraction took 106536.26 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 70.3 MB). Free memory was 1.1 GB in the beginning and 924.7 MB in the end (delta: 144.3 MB). Peak memory consumption was 214.6 MB. Max. memory is 11.5 GB. [2019-11-21 14:14:08,496 INFO L168 Benchmark]: Witness Printer took 60.13 ms. Allocated memory is still 1.2 GB. Free memory is still 924.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-21 14:14:08,500 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 341.51 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 104.51 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.1 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -143.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.75 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 443.05 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 106536.26 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 70.3 MB). Free memory was 1.1 GB in the beginning and 924.7 MB in the end (delta: 144.3 MB). Peak memory consumption was 214.6 MB. Max. memory is 11.5 GB. * Witness Printer took 60.13 ms. Allocated memory is still 1.2 GB. Free memory is still 924.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L18] int A, B; [L19] int r, d, p, q; [L20] A = __VERIFIER_nondet_int() [L21] B = __VERIFIER_nondet_int() [L24] r = A [L25] d = B [L26] p = 1 [L27] q = 0 [L29] COND TRUE 1 [L10] COND FALSE !(!(cond)) [L10] COND FALSE !(!(cond)) [L10] COND FALSE !(!(cond)) [L33] COND FALSE !(!(r >= d)) [L35] d = 2 * d [L36] p = 2 * p [L29] COND TRUE 1 [L10] COND FALSE !(!(cond)) [L10] COND FALSE !(!(cond)) [L10] COND FALSE !(!(cond)) [L33] COND FALSE !(!(r >= d)) [L35] d = 2 * d [L36] p = 2 * p [L29] COND TRUE 1 [L10] COND FALSE !(!(cond)) [L10] COND FALSE !(!(cond)) [L10] COND FALSE !(!(cond)) [L33] COND TRUE !(r >= d) [L39] COND TRUE 1 [L10] COND FALSE !(!(cond)) [L10] COND FALSE !(!(cond)) [L43] COND FALSE !(!(p != 1)) [L45] d = d / 2 [L46] p = p / 2 [L47] COND TRUE r >= d [L48] r = r - d [L49] q = q + p [L39] COND TRUE 1 [L10] COND TRUE !(cond) [L12] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 36 locations, 7 error locations. Result: UNSAFE, OverallTime: 106.4s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 86.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 188 SDtfs, 492 SDslu, 507 SDs, 0 SdLazy, 862 SolverSat, 360 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 43.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 303 GetRequests, 193 SyntacticMatches, 2 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 425 ImplicationChecksByTransitivity, 54.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 203 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 16.3s InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 244 ConstructedInterpolants, 16 QuantifiedInterpolants, 59460 SizeOfPredicates, 48 NumberOfNonLiveVariables, 265 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 16 InterpolantComputations, 8 PerfectInterpolantSequences, 24/102 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...