./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/hard.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3c39aff9 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-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --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-32bit-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 32bit --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 0.1.24-3c39aff [2019-11-27 18:43:46,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 18:43:46,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 18:43:46,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 18:43:46,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 18:43:46,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 18:43:46,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 18:43:46,906 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 18:43:46,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 18:43:46,915 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 18:43:46,917 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 18:43:46,919 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 18:43:46,920 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 18:43:46,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 18:43:46,925 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 18:43:46,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 18:43:46,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 18:43:46,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 18:43:46,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 18:43:46,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 18:43:46,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 18:43:46,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 18:43:46,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 18:43:46,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 18:43:46,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 18:43:46,955 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 18:43:46,955 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 18:43:46,957 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 18:43:46,958 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 18:43:46,959 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 18:43:46,959 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 18:43:46,960 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 18:43:46,961 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 18:43:46,962 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 18:43:46,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 18:43:46,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 18:43:46,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 18:43:46,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 18:43:46,966 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 18:43:46,967 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 18:43:46,968 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 18:43:46,969 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 18:43:46,996 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 18:43:46,997 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 18:43:46,998 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 18:43:46,999 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 18:43:46,999 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 18:43:46,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 18:43:46,999 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 18:43:47,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 18:43:47,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 18:43:47,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 18:43:47,001 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 18:43:47,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 18:43:47,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 18:43:47,001 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 18:43:47,002 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 18:43:47,002 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 18:43:47,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 18:43:47,003 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 18:43:47,003 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 18:43:47,003 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 18:43:47,003 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 18:43:47,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 18:43:47,004 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 18:43:47,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 18:43:47,005 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 18:43:47,005 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 18:43:47,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 18:43:47,005 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 18:43:47,006 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0f1c45558152fd199606f2551fe8da5ad92b45c [2019-11-27 18:43:47,304 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 18:43:47,317 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 18:43:47,321 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 18:43:47,323 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 18:43:47,323 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 18:43:47,324 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/hard.c [2019-11-27 18:43:47,384 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d2cb5e9b/a7f03c54ad164ebe92a4533845a759e6/FLAGb4f5f3db8 [2019-11-27 18:43:47,838 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 18:43:47,841 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/hard.c [2019-11-27 18:43:47,849 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d2cb5e9b/a7f03c54ad164ebe92a4533845a759e6/FLAGb4f5f3db8 [2019-11-27 18:43:48,222 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d2cb5e9b/a7f03c54ad164ebe92a4533845a759e6 [2019-11-27 18:43:48,226 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 18:43:48,228 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 18:43:48,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 18:43:48,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 18:43:48,233 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 18:43:48,234 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 06:43:48" (1/1) ... [2019-11-27 18:43:48,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b9b4597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:43:48, skipping insertion in model container [2019-11-27 18:43:48,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 06:43:48" (1/1) ... [2019-11-27 18:43:48,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 18:43:48,265 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 18:43:48,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 18:43:48,462 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 18:43:48,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 18:43:48,492 INFO L208 MainTranslator]: Completed translation [2019-11-27 18:43:48,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:43:48 WrapperNode [2019-11-27 18:43:48,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 18:43:48,494 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 18:43:48,494 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 18:43:48,495 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 18:43:48,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:43:48" (1/1) ... [2019-11-27 18:43:48,508 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:43:48" (1/1) ... [2019-11-27 18:43:48,579 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 18:43:48,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 18:43:48,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 18:43:48,580 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 18:43:48,588 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:43:48" (1/1) ... [2019-11-27 18:43:48,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:43:48" (1/1) ... [2019-11-27 18:43:48,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:43:48" (1/1) ... [2019-11-27 18:43:48,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:43:48" (1/1) ... [2019-11-27 18:43:48,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:43:48" (1/1) ... [2019-11-27 18:43:48,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:43:48" (1/1) ... [2019-11-27 18:43:48,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:43:48" (1/1) ... [2019-11-27 18:43:48,602 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 18:43:48,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 18:43:48,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 18:43:48,603 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 18:43:48,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:43:48" (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 [2019-11-27 18:43:48,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 18:43:48,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 18:43:48,936 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 18:43:48,936 INFO L287 CfgBuilder]: Removed 20 assume(true) statements. [2019-11-27 18:43:48,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 06:43:48 BoogieIcfgContainer [2019-11-27 18:43:48,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 18:43:48,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 18:43:48,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 18:43:48,943 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 18:43:48,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 06:43:48" (1/3) ... [2019-11-27 18:43:48,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@540078bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 06:43:48, skipping insertion in model container [2019-11-27 18:43:48,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:43:48" (2/3) ... [2019-11-27 18:43:48,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@540078bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 06:43:48, skipping insertion in model container [2019-11-27 18:43:48,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 06:43:48" (3/3) ... [2019-11-27 18:43:48,947 INFO L109 eAbstractionObserver]: Analyzing ICFG hard.c [2019-11-27 18:43:48,959 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 18:43:48,967 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-11-27 18:43:48,989 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-11-27 18:43:49,011 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 18:43:49,012 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 18:43:49,012 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 18:43:49,012 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 18:43:49,012 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 18:43:49,012 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 18:43:49,013 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 18:43:49,013 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 18:43:49,028 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2019-11-27 18:43:49,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-27 18:43:49,033 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 18:43:49,034 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-27 18:43:49,035 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]=== [2019-11-27 18:43:49,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 18:43:49,040 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-27 18:43:49,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 18:43:49,048 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607993722] [2019-11-27 18:43:49,048 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 18:43:49,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 18:43:49,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 18:43:49,212 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607993722] [2019-11-27 18:43:49,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 18:43:49,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-27 18:43:49,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867293764] [2019-11-27 18:43:49,219 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 18:43:49,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 18:43:49,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 18:43:49,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-27 18:43:49,235 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 4 states. [2019-11-27 18:43:49,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 18:43:49,377 INFO L93 Difference]: Finished difference Result 92 states and 127 transitions. [2019-11-27 18:43:49,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-27 18:43:49,379 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-27 18:43:49,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 18:43:49,391 INFO L225 Difference]: With dead ends: 92 [2019-11-27 18:43:49,391 INFO L226 Difference]: Without dead ends: 49 [2019-11-27 18:43:49,397 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 [2019-11-27 18:43:49,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-11-27 18:43:49,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30. [2019-11-27 18:43:49,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-27 18:43:49,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2019-11-27 18:43:49,439 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 4 [2019-11-27 18:43:49,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 18:43:49,439 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2019-11-27 18:43:49,439 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 18:43:49,440 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2019-11-27 18:43:49,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-27 18:43:49,440 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 18:43:49,441 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-27 18:43:49,441 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]=== [2019-11-27 18:43:49,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 18:43:49,442 INFO L82 PathProgramCache]: Analyzing trace with hash 925925231, now seen corresponding path program 1 times [2019-11-27 18:43:49,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 18:43:49,443 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921293634] [2019-11-27 18:43:49,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 18:43:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 18:43:49,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 18:43:49,479 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921293634] [2019-11-27 18:43:49,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 18:43:49,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-27 18:43:49,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214259264] [2019-11-27 18:43:49,481 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 18:43:49,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 18:43:49,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 18:43:49,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-27 18:43:49,483 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 4 states. [2019-11-27 18:43:49,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 18:43:49,579 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2019-11-27 18:43:49,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-27 18:43:49,579 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-11-27 18:43:49,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 18:43:49,581 INFO L225 Difference]: With dead ends: 49 [2019-11-27 18:43:49,581 INFO L226 Difference]: Without dead ends: 47 [2019-11-27 18:43:49,582 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 [2019-11-27 18:43:49,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-27 18:43:49,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 28. [2019-11-27 18:43:49,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-27 18:43:49,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2019-11-27 18:43:49,591 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 6 [2019-11-27 18:43:49,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 18:43:49,592 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2019-11-27 18:43:49,592 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 18:43:49,592 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2019-11-27 18:43:49,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-27 18:43:49,593 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 18:43:49,593 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 18:43:49,594 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]=== [2019-11-27 18:43:49,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 18:43:49,594 INFO L82 PathProgramCache]: Analyzing trace with hash 756072562, now seen corresponding path program 1 times [2019-11-27 18:43:49,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 18:43:49,595 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507266309] [2019-11-27 18:43:49,595 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 18:43:49,608 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-27 18:43:49,609 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [686697861] [2019-11-27 18:43:49,609 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 [2019-11-27 18:43:49,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 18:43:49,659 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-27 18:43:49,664 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 18:43:49,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 18:43:49,710 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507266309] [2019-11-27 18:43:49,711 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-27 18:43:49,712 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686697861] [2019-11-27 18:43:49,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 18:43:49,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-27 18:43:49,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839349113] [2019-11-27 18:43:49,713 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 18:43:49,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 18:43:49,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 18:43:49,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-27 18:43:49,714 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 4 states. [2019-11-27 18:43:49,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 18:43:49,813 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2019-11-27 18:43:49,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-27 18:43:49,814 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-27 18:43:49,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 18:43:49,815 INFO L225 Difference]: With dead ends: 69 [2019-11-27 18:43:49,815 INFO L226 Difference]: Without dead ends: 47 [2019-11-27 18:43:49,816 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 [2019-11-27 18:43:49,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-27 18:43:49,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 42. [2019-11-27 18:43:49,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-27 18:43:49,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2019-11-27 18:43:49,827 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 8 [2019-11-27 18:43:49,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 18:43:49,828 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2019-11-27 18:43:49,828 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 18:43:49,828 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2019-11-27 18:43:49,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-27 18:43:49,829 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 18:43:49,829 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 18:43:50,033 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 18:43:50,034 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]=== [2019-11-27 18:43:50,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 18:43:50,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1354107943, now seen corresponding path program 1 times [2019-11-27 18:43:50,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 18:43:50,036 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801771977] [2019-11-27 18:43:50,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 18:43:50,045 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-27 18:43:50,048 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [472902985] [2019-11-27 18:43:50,048 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) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 18:43:50,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 18:43:50,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-27 18:43:50,080 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 18:43:50,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 18:43:50,109 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801771977] [2019-11-27 18:43:50,109 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-27 18:43:50,109 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472902985] [2019-11-27 18:43:50,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 18:43:50,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-27 18:43:50,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418883864] [2019-11-27 18:43:50,111 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 18:43:50,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 18:43:50,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 18:43:50,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-27 18:43:50,112 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 4 states. [2019-11-27 18:43:50,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 18:43:50,206 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2019-11-27 18:43:50,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 18:43:50,207 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-27 18:43:50,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 18:43:50,208 INFO L225 Difference]: With dead ends: 60 [2019-11-27 18:43:50,208 INFO L226 Difference]: Without dead ends: 49 [2019-11-27 18:43:50,208 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 [2019-11-27 18:43:50,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-11-27 18:43:50,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2019-11-27 18:43:50,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-27 18:43:50,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2019-11-27 18:43:50,217 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 11 [2019-11-27 18:43:50,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 18:43:50,218 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2019-11-27 18:43:50,218 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 18:43:50,218 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2019-11-27 18:43:50,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-27 18:43:50,219 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 18:43:50,219 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-11-27 18:43:50,424 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 18:43:50,425 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]=== [2019-11-27 18:43:50,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 18:43:50,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1240091547, now seen corresponding path program 1 times [2019-11-27 18:43:50,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 18:43:50,426 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160116629] [2019-11-27 18:43:50,426 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 18:43:50,441 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-27 18:43:50,441 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1792931584] [2019-11-27 18:43:50,442 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) [2019-11-27 18:43:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 18:43:50,480 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-27 18:43:50,482 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 18:43:50,513 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 18:43:50,527 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 18:43:50,528 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160116629] [2019-11-27 18:43:50,528 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-27 18:43:50,528 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792931584] [2019-11-27 18:43:50,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-27 18:43:50,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-11-27 18:43:50,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399035279] [2019-11-27 18:43:50,530 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-27 18:43:50,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 18:43:50,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-27 18:43:50,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-27 18:43:50,531 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 5 states. [2019-11-27 18:43:50,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 18:43:50,702 INFO L93 Difference]: Finished difference Result 105 states and 122 transitions. [2019-11-27 18:43:50,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-27 18:43:50,704 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-11-27 18:43:50,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 18:43:50,705 INFO L225 Difference]: With dead ends: 105 [2019-11-27 18:43:50,705 INFO L226 Difference]: Without dead ends: 68 [2019-11-27 18:43:50,706 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 [2019-11-27 18:43:50,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-11-27 18:43:50,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 63. [2019-11-27 18:43:50,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-11-27 18:43:50,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2019-11-27 18:43:50,733 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 15 [2019-11-27 18:43:50,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 18:43:50,734 INFO L462 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2019-11-27 18:43:50,734 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-27 18:43:50,735 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2019-11-27 18:43:50,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-27 18:43:50,736 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 18:43:50,736 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1] [2019-11-27 18:43:50,939 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 18:43:50,940 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]=== [2019-11-27 18:43:50,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 18:43:50,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1654747054, now seen corresponding path program 2 times [2019-11-27 18:43:50,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 18:43:50,941 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403925250] [2019-11-27 18:43:50,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 18:43:50,949 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-27 18:43:50,950 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [986793756] [2019-11-27 18:43:50,950 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 [2019-11-27 18:43:50,992 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-27 18:43:50,993 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-27 18:43:50,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-27 18:43:50,996 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 18:43:51,046 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 18:43:51,060 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 18:43:51,061 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403925250] [2019-11-27 18:43:51,061 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-27 18:43:51,061 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986793756] [2019-11-27 18:43:51,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-27 18:43:51,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-27 18:43:51,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624610468] [2019-11-27 18:43:51,063 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-27 18:43:51,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 18:43:51,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-27 18:43:51,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-27 18:43:51,064 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand 6 states. [2019-11-27 18:43:51,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 18:43:51,311 INFO L93 Difference]: Finished difference Result 139 states and 164 transitions. [2019-11-27 18:43:51,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-27 18:43:51,312 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2019-11-27 18:43:51,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 18:43:51,314 INFO L225 Difference]: With dead ends: 139 [2019-11-27 18:43:51,314 INFO L226 Difference]: Without dead ends: 102 [2019-11-27 18:43:51,315 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 [2019-11-27 18:43:51,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2019-11-27 18:43:51,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 82. [2019-11-27 18:43:51,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-11-27 18:43:51,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 93 transitions. [2019-11-27 18:43:51,329 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 93 transitions. Word has length 22 [2019-11-27 18:43:51,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 18:43:51,329 INFO L462 AbstractCegarLoop]: Abstraction has 82 states and 93 transitions. [2019-11-27 18:43:51,329 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-27 18:43:51,330 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 93 transitions. [2019-11-27 18:43:51,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-27 18:43:51,331 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 18:43:51,331 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 18:43:51,535 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 18:43:51,541 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]=== [2019-11-27 18:43:51,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 18:43:51,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1585354123, now seen corresponding path program 1 times [2019-11-27 18:43:51,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 18:43:51,542 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569686544] [2019-11-27 18:43:51,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 18:43:51,552 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-27 18:43:51,553 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1129747087] [2019-11-27 18:43:51,553 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 [2019-11-27 18:43:51,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 18:43:51,591 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 27 conjunts are in the unsatisfiable core [2019-11-27 18:43:51,594 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 18:43:51,663 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 18:43:51,677 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 18:43:51,677 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569686544] [2019-11-27 18:43:51,677 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-27 18:43:51,678 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129747087] [2019-11-27 18:43:51,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-27 18:43:51,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-27 18:43:51,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199756596] [2019-11-27 18:43:51,679 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-27 18:43:51,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 18:43:51,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-27 18:43:51,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-27 18:43:51,680 INFO L87 Difference]: Start difference. First operand 82 states and 93 transitions. Second operand 6 states. [2019-11-27 18:43:51,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 18:43:51,857 INFO L93 Difference]: Finished difference Result 99 states and 109 transitions. [2019-11-27 18:43:51,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-27 18:43:51,857 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2019-11-27 18:43:51,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 18:43:51,858 INFO L225 Difference]: With dead ends: 99 [2019-11-27 18:43:51,858 INFO L226 Difference]: Without dead ends: 97 [2019-11-27 18:43:51,859 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-27 18:43:51,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2019-11-27 18:43:51,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 90. [2019-11-27 18:43:51,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2019-11-27 18:43:51,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 101 transitions. [2019-11-27 18:43:51,872 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 101 transitions. Word has length 24 [2019-11-27 18:43:51,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 18:43:51,872 INFO L462 AbstractCegarLoop]: Abstraction has 90 states and 101 transitions. [2019-11-27 18:43:51,872 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-27 18:43:51,873 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 101 transitions. [2019-11-27 18:43:51,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-27 18:43:51,874 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 18:43:51,874 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 18:43:52,082 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 18:43:52,083 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]=== [2019-11-27 18:43:52,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 18:43:52,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1185426063, now seen corresponding path program 1 times [2019-11-27 18:43:52,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 18:43:52,085 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084930837] [2019-11-27 18:43:52,085 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 18:43:52,096 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-27 18:43:52,097 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1451605369] [2019-11-27 18:43:52,097 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 [2019-11-27 18:43:52,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 18:43:52,131 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-27 18:43:52,133 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 18:43:52,182 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-27 18:43:52,184 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084930837] [2019-11-27 18:43:52,184 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-27 18:43:52,184 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451605369] [2019-11-27 18:43:52,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-27 18:43:52,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-27 18:43:52,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566772514] [2019-11-27 18:43:52,186 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-27 18:43:52,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 18:43:52,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-27 18:43:52,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-27 18:43:52,187 INFO L87 Difference]: Start difference. First operand 90 states and 101 transitions. Second operand 6 states. [2019-11-27 18:43:52,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 18:43:52,381 INFO L93 Difference]: Finished difference Result 120 states and 130 transitions. [2019-11-27 18:43:52,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-27 18:43:52,382 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2019-11-27 18:43:52,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 18:43:52,383 INFO L225 Difference]: With dead ends: 120 [2019-11-27 18:43:52,384 INFO L226 Difference]: Without dead ends: 105 [2019-11-27 18:43:52,384 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-11-27 18:43:52,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2019-11-27 18:43:52,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 89. [2019-11-27 18:43:52,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2019-11-27 18:43:52,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 102 transitions. [2019-11-27 18:43:52,396 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 102 transitions. Word has length 29 [2019-11-27 18:43:52,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 18:43:52,397 INFO L462 AbstractCegarLoop]: Abstraction has 89 states and 102 transitions. [2019-11-27 18:43:52,397 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-27 18:43:52,397 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 102 transitions. [2019-11-27 18:43:52,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-27 18:43:52,398 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 18:43:52,398 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1] [2019-11-27 18:43:52,602 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 18:43:52,602 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]=== [2019-11-27 18:43:52,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 18:43:52,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1363992507, now seen corresponding path program 3 times [2019-11-27 18:43:52,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 18:43:52,604 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31416575] [2019-11-27 18:43:52,604 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 18:43:52,611 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-27 18:43:52,612 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [487721002] [2019-11-27 18:43:52,612 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 [2019-11-27 18:43:52,638 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-27 18:43:52,639 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-27 18:43:52,640 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-27 18:43:52,642 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 18:43:52,673 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 18:43:52,718 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 18:43:52,765 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-11-27 18:43:52,766 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31416575] [2019-11-27 18:43:52,766 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-27 18:43:52,766 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487721002] [2019-11-27 18:43:52,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-27 18:43:52,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-11-27 18:43:52,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491545353] [2019-11-27 18:43:52,768 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-27 18:43:52,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 18:43:52,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-27 18:43:52,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-27 18:43:52,769 INFO L87 Difference]: Start difference. First operand 89 states and 102 transitions. Second operand 7 states. [2019-11-27 18:43:53,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 18:43:53,105 INFO L93 Difference]: Finished difference Result 113 states and 129 transitions. [2019-11-27 18:43:53,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-27 18:43:53,107 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2019-11-27 18:43:53,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 18:43:53,112 INFO L225 Difference]: With dead ends: 113 [2019-11-27 18:43:53,112 INFO L226 Difference]: Without dead ends: 103 [2019-11-27 18:43:53,113 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 [2019-11-27 18:43:53,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2019-11-27 18:43:53,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2019-11-27 18:43:53,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2019-11-27 18:43:53,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 116 transitions. [2019-11-27 18:43:53,139 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 116 transitions. Word has length 29 [2019-11-27 18:43:53,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 18:43:53,139 INFO L462 AbstractCegarLoop]: Abstraction has 101 states and 116 transitions. [2019-11-27 18:43:53,140 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-27 18:43:53,140 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 116 transitions. [2019-11-27 18:43:53,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-27 18:43:53,148 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 18:43:53,149 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 18:43:53,352 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 18:43:53,352 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]=== [2019-11-27 18:43:53,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 18:43:53,353 INFO L82 PathProgramCache]: Analyzing trace with hash -803819852, now seen corresponding path program 2 times [2019-11-27 18:43:53,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 18:43:53,353 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580754205] [2019-11-27 18:43:53,353 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 18:43:53,360 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-27 18:43:53,360 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1274922687] [2019-11-27 18:43:53,361 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 [2019-11-27 18:43:53,395 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-27 18:43:53,395 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-27 18:43:53,396 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 31 conjunts are in the unsatisfiable core [2019-11-27 18:43:53,398 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 18:43:53,458 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 18:43:53,473 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 18:43:53,473 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580754205] [2019-11-27 18:43:53,473 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-27 18:43:53,473 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274922687] [2019-11-27 18:43:53,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-27 18:43:53,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-11-27 18:43:53,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070619267] [2019-11-27 18:43:53,474 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-27 18:43:53,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 18:43:53,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-27 18:43:53,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-27 18:43:53,475 INFO L87 Difference]: Start difference. First operand 101 states and 116 transitions. Second operand 7 states. [2019-11-27 18:43:53,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 18:43:53,719 INFO L93 Difference]: Finished difference Result 113 states and 127 transitions. [2019-11-27 18:43:53,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-27 18:43:53,719 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2019-11-27 18:43:53,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 18:43:53,720 INFO L225 Difference]: With dead ends: 113 [2019-11-27 18:43:53,720 INFO L226 Difference]: Without dead ends: 111 [2019-11-27 18:43:53,721 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 [2019-11-27 18:43:53,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2019-11-27 18:43:53,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 103. [2019-11-27 18:43:53,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2019-11-27 18:43:53,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 117 transitions. [2019-11-27 18:43:53,730 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 117 transitions. Word has length 31 [2019-11-27 18:43:53,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 18:43:53,730 INFO L462 AbstractCegarLoop]: Abstraction has 103 states and 117 transitions. [2019-11-27 18:43:53,730 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-27 18:43:53,730 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 117 transitions. [2019-11-27 18:43:53,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-27 18:43:53,731 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 18:43:53,731 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2019-11-27 18:43:53,935 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 18:43:53,936 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]=== [2019-11-27 18:43:53,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 18:43:53,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1656121185, now seen corresponding path program 3 times [2019-11-27 18:43:53,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 18:43:53,936 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971074624] [2019-11-27 18:43:53,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 18:43:53,944 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-27 18:43:53,944 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [445761728] [2019-11-27 18:43:53,944 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 [2019-11-27 18:43:54,120 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-27 18:43:54,121 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-27 18:43:54,122 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 40 conjunts are in the unsatisfiable core [2019-11-27 18:43:54,124 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 18:43:54,286 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 18:43:54,309 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 18:43:54,310 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971074624] [2019-11-27 18:43:54,310 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-27 18:43:54,310 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445761728] [2019-11-27 18:43:54,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-27 18:43:54,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2019-11-27 18:43:54,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033002162] [2019-11-27 18:43:54,311 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-27 18:43:54,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 18:43:54,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-27 18:43:54,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-27 18:43:54,312 INFO L87 Difference]: Start difference. First operand 103 states and 117 transitions. Second operand 9 states. [2019-11-27 18:43:54,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 18:43:54,725 INFO L93 Difference]: Finished difference Result 115 states and 126 transitions. [2019-11-27 18:43:54,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-27 18:43:54,726 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2019-11-27 18:43:54,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 18:43:54,727 INFO L225 Difference]: With dead ends: 115 [2019-11-27 18:43:54,727 INFO L226 Difference]: Without dead ends: 104 [2019-11-27 18:43:54,728 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 [2019-11-27 18:43:54,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2019-11-27 18:43:54,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2019-11-27 18:43:54,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2019-11-27 18:43:54,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 113 transitions. [2019-11-27 18:43:54,738 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 113 transitions. Word has length 37 [2019-11-27 18:43:54,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 18:43:54,740 INFO L462 AbstractCegarLoop]: Abstraction has 101 states and 113 transitions. [2019-11-27 18:43:54,741 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-27 18:43:54,741 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 113 transitions. [2019-11-27 18:43:54,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-27 18:43:54,745 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 18:43:54,745 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-27 18:43:54,950 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 18:43:54,950 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]=== [2019-11-27 18:43:54,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 18:43:54,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1263094175, now seen corresponding path program 1 times [2019-11-27 18:43:54,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 18:43:54,952 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279381395] [2019-11-27 18:43:54,952 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 18:43:54,960 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-27 18:43:54,960 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2111471385] [2019-11-27 18:43:54,960 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 [2019-11-27 18:43:54,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 18:43:54,995 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-27 18:43:54,997 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 18:43:55,024 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 18:43:55,025 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 18:43:55,107 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-27 18:43:55,107 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279381395] [2019-11-27 18:43:55,108 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-27 18:43:55,108 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111471385] [2019-11-27 18:43:55,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 18:43:55,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-27 18:43:55,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081774474] [2019-11-27 18:43:55,109 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-27 18:43:55,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 18:43:55,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-27 18:43:55,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-27 18:43:55,110 INFO L87 Difference]: Start difference. First operand 101 states and 113 transitions. Second operand 6 states. [2019-11-27 18:43:57,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 18:43:57,683 INFO L93 Difference]: Finished difference Result 146 states and 159 transitions. [2019-11-27 18:43:57,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-27 18:43:57,684 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2019-11-27 18:43:57,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 18:43:57,685 INFO L225 Difference]: With dead ends: 146 [2019-11-27 18:43:57,685 INFO L226 Difference]: Without dead ends: 103 [2019-11-27 18:43:57,687 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-27 18:43:57,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2019-11-27 18:43:57,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 79. [2019-11-27 18:43:57,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2019-11-27 18:43:57,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2019-11-27 18:43:57,694 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 37 [2019-11-27 18:43:57,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 18:43:57,695 INFO L462 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2019-11-27 18:43:57,695 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-27 18:43:57,695 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2019-11-27 18:43:57,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-27 18:43:57,696 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 18:43:57,696 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 18:43:57,899 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 18:43:57,900 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]=== [2019-11-27 18:43:57,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 18:43:57,900 INFO L82 PathProgramCache]: Analyzing trace with hash -2081381013, now seen corresponding path program 4 times [2019-11-27 18:43:57,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 18:43:57,900 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134256890] [2019-11-27 18:43:57,900 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 18:43:57,907 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-27 18:43:57,907 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [589207496] [2019-11-27 18:43:57,907 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 [2019-11-27 18:43:57,948 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-27 18:43:57,948 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-27 18:43:57,950 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 43 conjunts are in the unsatisfiable core [2019-11-27 18:43:57,952 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 18:43:57,985 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 18:43:58,009 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 18:43:58,044 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 18:43:59,052 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 18:43:59,052 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 18:43:59,053 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 18:43:59,053 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 18:43:59,057 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 18:43:59,058 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 18:43:59,067 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 18:43:59,068 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 18:44:17,072 WARN L192 SmtUtils]: Spent 2.35 s on a formula simplification. DAG size of input: 65 DAG size of output: 41 [2019-11-27 18:44:30,699 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 18:44:30,793 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 33 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 18:44:30,793 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134256890] [2019-11-27 18:44:30,794 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-27 18:44:30,794 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589207496] [2019-11-27 18:44:30,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-27 18:44:30,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2019-11-27 18:44:30,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023344359] [2019-11-27 18:44:30,795 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-27 18:44:30,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 18:44:30,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-27 18:44:30,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=143, Unknown=14, NotChecked=0, Total=210 [2019-11-27 18:44:30,796 INFO L87 Difference]: Start difference. First operand 79 states and 84 transitions. Second operand 15 states. [2019-11-27 18:44:37,784 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 15 [2019-11-27 18:45:18,433 WARN L192 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 22 [2019-11-27 18:46:27,537 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2019-11-27 18:46:27,738 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 18:46:27,740 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) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:100) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.managedscript.ManagedScript.pop(ManagedScript.java:130) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:660) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:264) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:279) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:161) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:714) 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.CegarLoopResult.iterate(CegarLoopResult.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.io.IOException: Stream closed at java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:433) at java.io.OutputStream.write(OutputStream.java:116) at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82) at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140) at sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:297) at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:141) at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:229) at java.io.BufferedWriter.flush(BufferedWriter.java:254) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:120) ... 31 more [2019-11-27 18:46:27,748 INFO L168 Benchmark]: Toolchain (without parser) took 159519.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 210.2 MB). Free memory was 952.3 MB in the beginning and 855.4 MB in the end (delta: 96.9 MB). Peak memory consumption was 307.1 MB. Max. memory is 11.5 GB. [2019-11-27 18:46:27,749 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 18:46:27,749 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.27 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-27 18:46:27,750 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -205.0 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-27 18:46:27,751 INFO L168 Benchmark]: Boogie Preprocessor took 22.65 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-27 18:46:27,751 INFO L168 Benchmark]: RCFGBuilder took 334.90 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: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. [2019-11-27 18:46:27,752 INFO L168 Benchmark]: TraceAbstraction took 158806.80 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 60.3 MB). Free memory was 1.1 GB in the beginning and 855.4 MB in the end (delta: 260.7 MB). Peak memory consumption was 321.0 MB. Max. memory is 11.5 GB. [2019-11-27 18:46:27,756 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 264.27 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 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 85.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -205.0 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.65 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 334.90 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: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 158806.80 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 60.3 MB). Free memory was 1.1 GB in the beginning and 855.4 MB in the end (delta: 260.7 MB). Peak memory consumption was 321.0 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) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-3c39aff [2019-11-27 18:46:29,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 18:46:29,567 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 18:46:29,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 18:46:29,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 18:46:29,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 18:46:29,589 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 18:46:29,599 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 18:46:29,604 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 18:46:29,605 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 18:46:29,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 18:46:29,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 18:46:29,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 18:46:29,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 18:46:29,612 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 18:46:29,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 18:46:29,615 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 18:46:29,617 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 18:46:29,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 18:46:29,621 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 18:46:29,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 18:46:29,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 18:46:29,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 18:46:29,626 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 18:46:29,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 18:46:29,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 18:46:29,629 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 18:46:29,629 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 18:46:29,630 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 18:46:29,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 18:46:29,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 18:46:29,632 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 18:46:29,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 18:46:29,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 18:46:29,635 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 18:46:29,635 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 18:46:29,636 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 18:46:29,636 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 18:46:29,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 18:46:29,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 18:46:29,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 18:46:29,639 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-27 18:46:29,654 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 18:46:29,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 18:46:29,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 18:46:29,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 18:46:29,656 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 18:46:29,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 18:46:29,657 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 18:46:29,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 18:46:29,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 18:46:29,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 18:46:29,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 18:46:29,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 18:46:29,658 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-27 18:46:29,659 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-27 18:46:29,659 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 18:46:29,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 18:46:29,660 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 18:46:29,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 18:46:29,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 18:46:29,660 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 18:46:29,661 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 18:46:29,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 18:46:29,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 18:46:29,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 18:46:29,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 18:46:29,662 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 18:46:29,662 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-27 18:46:29,663 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-27 18:46:29,663 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 18:46:29,663 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-27 18:46:29,664 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0f1c45558152fd199606f2551fe8da5ad92b45c [2019-11-27 18:46:29,975 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 18:46:29,989 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 18:46:29,992 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 18:46:29,994 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 18:46:29,995 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 18:46:29,995 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/hard.c [2019-11-27 18:46:30,069 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f159f59f/f1fd914d8bb24bf3bdf5cbbbdc10ea1c/FLAGbf002d471 [2019-11-27 18:46:30,523 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 18:46:30,523 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/hard.c [2019-11-27 18:46:30,530 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f159f59f/f1fd914d8bb24bf3bdf5cbbbdc10ea1c/FLAGbf002d471 [2019-11-27 18:46:30,913 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f159f59f/f1fd914d8bb24bf3bdf5cbbbdc10ea1c [2019-11-27 18:46:30,917 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 18:46:30,920 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 18:46:30,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 18:46:30,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 18:46:30,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 18:46:30,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 06:46:30" (1/1) ... [2019-11-27 18:46:30,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b9b4597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:46:30, skipping insertion in model container [2019-11-27 18:46:30,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 06:46:30" (1/1) ... [2019-11-27 18:46:30,938 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 18:46:30,957 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 18:46:31,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 18:46:31,124 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 18:46:31,145 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 18:46:31,159 INFO L208 MainTranslator]: Completed translation [2019-11-27 18:46:31,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:46:31 WrapperNode [2019-11-27 18:46:31,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 18:46:31,161 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 18:46:31,161 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 18:46:31,161 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 18:46:31,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:46:31" (1/1) ... [2019-11-27 18:46:31,177 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:46:31" (1/1) ... [2019-11-27 18:46:31,261 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 18:46:31,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 18:46:31,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 18:46:31,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 18:46:31,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:46:31" (1/1) ... [2019-11-27 18:46:31,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:46:31" (1/1) ... [2019-11-27 18:46:31,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:46:31" (1/1) ... [2019-11-27 18:46:31,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:46:31" (1/1) ... [2019-11-27 18:46:31,276 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:46:31" (1/1) ... [2019-11-27 18:46:31,283 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:46:31" (1/1) ... [2019-11-27 18:46:31,285 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:46:31" (1/1) ... [2019-11-27 18:46:31,292 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 18:46:31,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 18:46:31,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 18:46:31,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 18:46:31,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:46:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 18:46:31,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 18:46:31,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 18:46:31,732 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 18:46:31,732 INFO L287 CfgBuilder]: Removed 20 assume(true) statements. [2019-11-27 18:46:31,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 06:46:31 BoogieIcfgContainer [2019-11-27 18:46:31,734 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 18:46:31,735 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 18:46:31,735 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 18:46:31,738 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 18:46:31,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 06:46:30" (1/3) ... [2019-11-27 18:46:31,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5771e5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 06:46:31, skipping insertion in model container [2019-11-27 18:46:31,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:46:31" (2/3) ... [2019-11-27 18:46:31,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5771e5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 06:46:31, skipping insertion in model container [2019-11-27 18:46:31,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 06:46:31" (3/3) ... [2019-11-27 18:46:31,742 INFO L109 eAbstractionObserver]: Analyzing ICFG hard.c [2019-11-27 18:46:31,749 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 18:46:31,755 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-11-27 18:46:31,766 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-11-27 18:46:31,792 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 18:46:31,792 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 18:46:31,792 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 18:46:31,792 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 18:46:31,793 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 18:46:31,793 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 18:46:31,793 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 18:46:31,793 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 18:46:31,810 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2019-11-27 18:46:31,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-27 18:46:31,815 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 18:46:31,816 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-27 18:46:31,817 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]=== [2019-11-27 18:46:31,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 18:46:31,823 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-27 18:46:31,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 18:46:31,835 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1208869806] [2019-11-27 18:46:31,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-11-27 18:46:31,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 18:46:31,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-27 18:46:31,892 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 18:46:31,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 18:46:31,943 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 18:46:31,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 18:46:31,967 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1208869806] [2019-11-27 18:46:31,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 18:46:31,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-27 18:46:31,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332700588] [2019-11-27 18:46:31,975 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-27 18:46:31,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 18:46:31,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-27 18:46:31,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-27 18:46:31,989 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 5 states. [2019-11-27 18:46:32,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 18:46:32,239 INFO L93 Difference]: Finished difference Result 92 states and 127 transitions. [2019-11-27 18:46:32,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-27 18:46:32,241 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2019-11-27 18:46:32,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 18:46:32,251 INFO L225 Difference]: With dead ends: 92 [2019-11-27 18:46:32,252 INFO L226 Difference]: Without dead ends: 49 [2019-11-27 18:46:32,256 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 [2019-11-27 18:46:32,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-11-27 18:46:32,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30. [2019-11-27 18:46:32,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-27 18:46:32,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2019-11-27 18:46:32,295 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 4 [2019-11-27 18:46:32,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 18:46:32,296 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2019-11-27 18:46:32,296 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-27 18:46:32,296 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2019-11-27 18:46:32,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-27 18:46:32,297 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 18:46:32,297 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-27 18:46:32,503 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-27 18:46:32,504 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]=== [2019-11-27 18:46:32,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 18:46:32,505 INFO L82 PathProgramCache]: Analyzing trace with hash 925925231, now seen corresponding path program 1 times [2019-11-27 18:46:32,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 18:46:32,507 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1083545269] [2019-11-27 18:46:32,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-11-27 18:46:32,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 18:46:32,527 INFO L255 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-27 18:46:32,528 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 18:46:32,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 18:46:32,549 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 18:46:32,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 18:46:32,565 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1083545269] [2019-11-27 18:46:32,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 18:46:32,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-27 18:46:32,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984407303] [2019-11-27 18:46:32,568 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-27 18:46:32,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 18:46:32,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-27 18:46:32,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-27 18:46:32,569 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 5 states. [2019-11-27 18:46:32,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 18:46:32,826 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2019-11-27 18:46:32,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-27 18:46:32,826 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-11-27 18:46:32,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 18:46:32,828 INFO L225 Difference]: With dead ends: 49 [2019-11-27 18:46:32,828 INFO L226 Difference]: Without dead ends: 47 [2019-11-27 18:46:32,829 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 [2019-11-27 18:46:32,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-27 18:46:32,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 28. [2019-11-27 18:46:32,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-27 18:46:32,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2019-11-27 18:46:32,846 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 6 [2019-11-27 18:46:32,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 18:46:32,846 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2019-11-27 18:46:32,846 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-27 18:46:32,846 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2019-11-27 18:46:32,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-27 18:46:32,847 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 18:46:32,847 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 18:46:33,057 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-27 18:46:33,057 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]=== [2019-11-27 18:46:33,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 18:46:33,058 INFO L82 PathProgramCache]: Analyzing trace with hash 756072562, now seen corresponding path program 1 times [2019-11-27 18:46:33,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 18:46:33,059 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [979929683] [2019-11-27 18:46:33,060 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-11-27 18:46:33,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 18:46:33,102 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-27 18:46:33,103 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 18:46:33,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 18:46:33,141 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 18:46:33,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 18:46:33,238 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [979929683] [2019-11-27 18:46:33,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 18:46:33,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-27 18:46:33,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875032704] [2019-11-27 18:46:33,239 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-27 18:46:33,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 18:46:33,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-27 18:46:33,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-27 18:46:33,240 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 6 states. [2019-11-27 18:46:36,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 18:46:36,131 INFO L93 Difference]: Finished difference Result 93 states and 103 transitions. [2019-11-27 18:46:36,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-27 18:46:36,134 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2019-11-27 18:46:36,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 18:46:36,136 INFO L225 Difference]: With dead ends: 93 [2019-11-27 18:46:36,136 INFO L226 Difference]: Without dead ends: 71 [2019-11-27 18:46:36,137 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 [2019-11-27 18:46:36,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2019-11-27 18:46:36,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 53. [2019-11-27 18:46:36,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-11-27 18:46:36,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2019-11-27 18:46:36,153 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 8 [2019-11-27 18:46:36,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 18:46:36,154 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2019-11-27 18:46:36,154 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-27 18:46:36,154 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2019-11-27 18:46:36,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-27 18:46:36,155 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 18:46:36,155 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 18:46:36,358 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-27 18:46:36,359 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]=== [2019-11-27 18:46:36,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 18:46:36,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1354107943, now seen corresponding path program 1 times [2019-11-27 18:46:36,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 18:46:36,362 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [484807166] [2019-11-27 18:46:36,362 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-11-27 18:46:36,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 18:46:36,407 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-27 18:46:36,408 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 18:46:36,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 18:46:36,470 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 18:46:36,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 18:46:36,529 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [484807166] [2019-11-27 18:46:36,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 18:46:36,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-27 18:46:36,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897774299] [2019-11-27 18:46:36,530 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-27 18:46:36,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 18:46:36,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-27 18:46:36,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-27 18:46:36,531 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 5 states. [2019-11-27 18:46:36,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 18:46:36,780 INFO L93 Difference]: Finished difference Result 71 states and 78 transitions. [2019-11-27 18:46:36,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-27 18:46:36,783 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-11-27 18:46:36,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 18:46:36,784 INFO L225 Difference]: With dead ends: 71 [2019-11-27 18:46:36,784 INFO L226 Difference]: Without dead ends: 60 [2019-11-27 18:46:36,785 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-27 18:46:36,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-11-27 18:46:36,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2019-11-27 18:46:36,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-11-27 18:46:36,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2019-11-27 18:46:36,797 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 11 [2019-11-27 18:46:36,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 18:46:36,798 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2019-11-27 18:46:36,798 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-27 18:46:36,798 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2019-11-27 18:46:36,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-27 18:46:36,799 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 18:46:36,799 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1] [2019-11-27 18:46:36,999 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-27 18:46:37,000 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]=== [2019-11-27 18:46:37,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 18:46:37,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1654747054, now seen corresponding path program 1 times [2019-11-27 18:46:37,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 18:46:37,003 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1697940218] [2019-11-27 18:46:37,004 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-11-27 18:46:37,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 18:46:37,094 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-27 18:46:37,096 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 18:46:37,178 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 18:46:37,207 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 18:46:37,207 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 18:46:39,611 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 2 refuted. 7 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 18:46:39,612 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1697940218] [2019-11-27 18:46:39,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-27 18:46:39,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2019-11-27 18:46:39,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869927979] [2019-11-27 18:46:39,613 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-27 18:46:39,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 18:46:39,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-27 18:46:39,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=60, Unknown=1, NotChecked=0, Total=90 [2019-11-27 18:46:39,614 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 10 states. [2019-11-27 18:46:43,151 WARN L192 SmtUtils]: Spent 2.15 s on a formula simplification that was a NOOP. DAG size: 19 [2019-11-27 18:46:45,433 WARN L192 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 14 [2019-11-27 18:46:47,831 WARN L192 SmtUtils]: Spent 2.11 s on a formula simplification that was a NOOP. DAG size: 18 [2019-11-27 18:46:51,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 18:46:51,953 INFO L93 Difference]: Finished difference Result 114 states and 128 transitions. [2019-11-27 18:46:51,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-27 18:46:51,956 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2019-11-27 18:46:51,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 18:46:51,958 INFO L225 Difference]: With dead ends: 114 [2019-11-27 18:46:51,958 INFO L226 Difference]: Without dead ends: 104 [2019-11-27 18:46:51,960 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 [2019-11-27 18:46:51,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2019-11-27 18:46:51,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 64. [2019-11-27 18:46:51,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2019-11-27 18:46:51,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 71 transitions. [2019-11-27 18:46:51,981 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 71 transitions. Word has length 22 [2019-11-27 18:46:51,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 18:46:51,985 INFO L462 AbstractCegarLoop]: Abstraction has 64 states and 71 transitions. [2019-11-27 18:46:51,986 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-27 18:46:51,987 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 71 transitions. [2019-11-27 18:46:51,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-27 18:46:51,988 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 18:46:51,989 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 18:46:52,210 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-27 18:46:52,210 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]=== [2019-11-27 18:46:52,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 18:46:52,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1585354123, now seen corresponding path program 1 times [2019-11-27 18:46:52,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 18:46:52,212 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2058220477] [2019-11-27 18:46:52,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2019-11-27 18:46:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 18:46:52,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-27 18:46:52,426 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 18:46:52,993 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2019-11-27 18:46:53,472 WARN L192 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 18 [2019-11-27 18:46:53,475 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 18:46:53,770 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 18:46:53,770 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 18:46:54,933 WARN L192 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2019-11-27 18:46:56,225 WARN L192 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2019-11-27 18:46:57,996 WARN L192 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2019-11-27 18:47:00,348 WARN L192 SmtUtils]: Spent 880.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2019-11-27 18:47:00,353 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 18:47:00,353 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2058220477] [2019-11-27 18:47:00,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-27 18:47:00,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2019-11-27 18:47:00,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4771357] [2019-11-27 18:47:00,360 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-27 18:47:00,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 18:47:00,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-27 18:47:00,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2019-11-27 18:47:00,362 INFO L87 Difference]: Start difference. First operand 64 states and 71 transitions. Second operand 14 states. [2019-11-27 18:47:03,376 WARN L192 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2019-11-27 18:47:04,523 WARN L192 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2019-11-27 18:47:05,575 WARN L192 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2019-11-27 18:47:06,954 WARN L192 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2019-11-27 18:47:11,753 WARN L192 SmtUtils]: Spent 1.49 s on a formula simplification that was a NOOP. DAG size: 46 [2019-11-27 18:47:19,479 WARN L192 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 36 [2019-11-27 18:47:26,754 WARN L192 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 37 [2019-11-27 18:47:34,529 WARN L192 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 41 [2019-11-27 18:47:40,170 WARN L192 SmtUtils]: Spent 1.36 s on a formula simplification that was a NOOP. DAG size: 45 [2019-11-27 18:47:45,883 WARN L192 SmtUtils]: Spent 1.62 s on a formula simplification that was a NOOP. DAG size: 32 [2019-11-27 18:47:48,906 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2019-11-27 18:48:01,214 WARN L192 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2019-11-27 18:48:04,165 WARN L192 SmtUtils]: Spent 823.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2019-11-27 18:48:06,681 WARN L192 SmtUtils]: Spent 943.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2019-11-27 18:48:09,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 18:48:09,378 INFO L93 Difference]: Finished difference Result 136 states and 148 transitions. [2019-11-27 18:48:09,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-11-27 18:48:09,398 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 24 [2019-11-27 18:48:09,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 18:48:09,399 INFO L225 Difference]: With dead ends: 136 [2019-11-27 18:48:09,399 INFO L226 Difference]: Without dead ends: 110 [2019-11-27 18:48:09,401 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 44.0s TimeCoverageRelationStatistics Valid=253, Invalid=739, Unknown=0, NotChecked=0, Total=992 [2019-11-27 18:48:09,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2019-11-27 18:48:09,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 76. [2019-11-27 18:48:09,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-11-27 18:48:09,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2019-11-27 18:48:09,416 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 24 [2019-11-27 18:48:09,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 18:48:09,416 INFO L462 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2019-11-27 18:48:09,416 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-27 18:48:09,416 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2019-11-27 18:48:09,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-27 18:48:09,417 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 18:48:09,418 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 18:48:09,629 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-11-27 18:48:09,630 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]=== [2019-11-27 18:48:09,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 18:48:09,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1187920850, now seen corresponding path program 1 times [2019-11-27 18:48:09,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 18:48:09,632 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1404696279] [2019-11-27 18:48:09,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2019-11-27 18:48:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 18:48:09,753 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-27 18:48:09,755 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 18:48:10,629 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2019-11-27 18:48:10,635 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 18:48:11,018 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 18:48:11,018 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 18:48:13,861 WARN L192 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2019-11-27 18:48:15,882 WARN L192 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2019-11-27 18:48:15,902 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 18:48:15,903 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1404696279] [2019-11-27 18:48:15,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-27 18:48:15,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2019-11-27 18:48:15,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145920766] [2019-11-27 18:48:15,905 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-27 18:48:15,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 18:48:15,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-27 18:48:15,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2019-11-27 18:48:15,906 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand 12 states. [2019-11-27 18:48:23,633 WARN L192 SmtUtils]: Spent 535.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2019-11-27 18:48:24,737 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2019-11-27 18:48:27,743 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2019-11-27 18:48:30,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 18:48:30,687 INFO L93 Difference]: Finished difference Result 109 states and 123 transitions. [2019-11-27 18:48:30,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-27 18:48:30,688 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2019-11-27 18:48:30,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 18:48:30,689 INFO L225 Difference]: With dead ends: 109 [2019-11-27 18:48:30,689 INFO L226 Difference]: Without dead ends: 83 [2019-11-27 18:48:30,690 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2019-11-27 18:48:30,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-11-27 18:48:30,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 77. [2019-11-27 18:48:30,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2019-11-27 18:48:30,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 84 transitions. [2019-11-27 18:48:30,701 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 84 transitions. Word has length 26 [2019-11-27 18:48:30,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 18:48:30,701 INFO L462 AbstractCegarLoop]: Abstraction has 77 states and 84 transitions. [2019-11-27 18:48:30,701 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-27 18:48:30,701 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 84 transitions. [2019-11-27 18:48:30,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-27 18:48:30,702 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 18:48:30,702 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 18:48:30,913 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-11-27 18:48:30,914 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]=== [2019-11-27 18:48:30,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 18:48:30,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1185426063, now seen corresponding path program 1 times [2019-11-27 18:48:30,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 18:48:30,914 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [484201494] [2019-11-27 18:48:30,915 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2019-11-27 18:48:31,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 18:48:31,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-27 18:48:31,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 18:48:31,927 WARN L192 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2019-11-27 18:48:32,672 WARN L192 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 26 [2019-11-27 18:48:35,763 WARN L192 SmtUtils]: Spent 2.82 s on a formula simplification. DAG size of input: 37 DAG size of output: 29 [2019-11-27 18:48:35,765 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 18:48:38,889 WARN L192 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 40 DAG size of output: 23 [2019-11-27 18:48:40,179 WARN L192 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2019-11-27 18:48:40,181 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 18:48:40,336 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 18:48:40,336 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 18:48:41,037 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 18:48:41,681 WARN L192 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2019-11-27 18:48:42,310 WARN L192 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2019-11-27 18:48:42,312 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 18:48:43,429 WARN L192 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2019-11-27 18:48:45,482 WARN L192 SmtUtils]: Spent 508.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2019-11-27 18:48:48,478 WARN L192 SmtUtils]: Spent 826.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2019-11-27 18:48:51,878 WARN L192 SmtUtils]: Spent 911.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2019-11-27 18:48:59,297 WARN L192 SmtUtils]: Spent 2.78 s on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2019-11-27 18:48:59,305 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 18:48:59,306 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [484201494] [2019-11-27 18:48:59,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-27 18:48:59,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2019-11-27 18:48:59,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332714963] [2019-11-27 18:48:59,308 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-11-27 18:48:59,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 18:48:59,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-11-27 18:48:59,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2019-11-27 18:48:59,312 INFO L87 Difference]: Start difference. First operand 77 states and 84 transitions. Second operand 21 states. [2019-11-27 18:49:02,564 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2019-11-27 18:49:06,492 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2019-11-27 18:49:07,826 WARN L192 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2019-11-27 18:49:29,255 WARN L192 SmtUtils]: Spent 8.08 s on a formula simplification that was a NOOP. DAG size: 54 [2019-11-27 18:49:37,244 WARN L192 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 28 [2019-11-27 18:49:44,346 WARN L192 SmtUtils]: Spent 2.91 s on a formula simplification that was a NOOP. DAG size: 31 [2019-11-27 18:50:00,420 WARN L192 SmtUtils]: Spent 5.77 s on a formula simplification that was a NOOP. DAG size: 51 [2019-11-27 18:50:07,357 WARN L192 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2019-11-27 18:50:20,710 WARN L192 SmtUtils]: Spent 4.49 s on a formula simplification that was a NOOP. DAG size: 59 [2019-11-27 18:50:27,104 WARN L192 SmtUtils]: Spent 475.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2019-11-27 18:50:32,339 WARN L192 SmtUtils]: Spent 698.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2019-11-27 18:50:32,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 18:50:32,359 INFO L93 Difference]: Finished difference Result 84 states and 90 transitions. [2019-11-27 18:50:32,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-27 18:50:32,363 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 29 [2019-11-27 18:50:32,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 18:50:32,364 INFO L225 Difference]: With dead ends: 84 [2019-11-27 18:50:32,364 INFO L226 Difference]: Without dead ends: 69 [2019-11-27 18:50:32,365 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 88.9s TimeCoverageRelationStatistics Valid=337, Invalid=851, Unknown=2, NotChecked=0, Total=1190 [2019-11-27 18:50:32,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-11-27 18:50:32,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 64. [2019-11-27 18:50:32,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2019-11-27 18:50:32,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2019-11-27 18:50:32,374 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 29 [2019-11-27 18:50:32,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 18:50:32,375 INFO L462 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2019-11-27 18:50:32,375 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-11-27 18:50:32,375 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2019-11-27 18:50:32,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-27 18:50:32,376 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 18:50:32,376 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 18:50:32,585 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-11-27 18:50:32,585 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]=== [2019-11-27 18:50:32,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 18:50:32,585 INFO L82 PathProgramCache]: Analyzing trace with hash -803819852, now seen corresponding path program 2 times [2019-11-27 18:50:32,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 18:50:32,586 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [446220123] [2019-11-27 18:50:32,586 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2019-11-27 18:50:32,669 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-27 18:50:32,670 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2019-11-27 18:50:32,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 18:50:32,795 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-27 18:50:32,796 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 18:50:32,997 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2019-11-27 18:50:33,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 06:50:33 BoogieIcfgContainer [2019-11-27 18:50:33,020 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 18:50:33,021 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 18:50:33,021 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 18:50:33,021 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 18:50:33,022 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 06:46:31" (3/4) ... [2019-11-27 18:50:33,024 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-27 18:50:33,076 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 18:50:33,076 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 18:50:33,078 INFO L168 Benchmark]: Toolchain (without parser) took 242158.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 188.2 MB). Free memory was 957.7 MB in the beginning and 1.2 GB in the end (delta: -193.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 18:50:33,078 INFO L168 Benchmark]: CDTParser took 0.30 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. [2019-11-27 18:50:33,079 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.97 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 946.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-27 18:50:33,079 INFO L168 Benchmark]: Boogie Procedure Inliner took 100.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -185.5 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-27 18:50:33,080 INFO L168 Benchmark]: Boogie Preprocessor took 31.29 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-27 18:50:33,081 INFO L168 Benchmark]: RCFGBuilder took 440.68 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: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2019-11-27 18:50:33,081 INFO L168 Benchmark]: TraceAbstraction took 241285.86 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 52.4 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -51.5 MB). Peak memory consumption was 905.4 kB. Max. memory is 11.5 GB. [2019-11-27 18:50:33,082 INFO L168 Benchmark]: Witness Printer took 55.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 7.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 11.5 GB. [2019-11-27 18:50:33,085 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 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 238.97 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 946.9 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 100.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -185.5 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.29 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 440.68 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: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 241285.86 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 52.4 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -51.5 MB). Peak memory consumption was 905.4 kB. Max. memory is 11.5 GB. * Witness Printer took 55.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 7.2 MB). Peak memory consumption was 7.2 MB. 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: 241.2s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 192.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 167 SDtfs, 543 SDslu, 528 SDs, 0 SdLazy, 922 SolverSat, 441 SolverUnsat, 12 SolverUnknown, 0 SolverNotchecked, 79.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 310 GetRequests, 182 SyntacticMatches, 1 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 153.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred 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, 147 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 44.9s InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 244 ConstructedInterpolants, 16 QuantifiedInterpolants, 110500 SizeOfPredicates, 51 NumberOfNonLiveVariables, 265 ConjunctsInSsa, 81 ConjunctsInUnsatCore, 16 InterpolantComputations, 8 PerfectInterpolantSequences, 10/102 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...