/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/array-crafted/mapavg5.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:25:49,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:25:49,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:25:49,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:25:49,886 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:25:49,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:25:49,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:25:49,899 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:25:49,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:25:49,902 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:25:49,903 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:25:49,905 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:25:49,906 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:25:49,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:25:49,908 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:25:49,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:25:49,910 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:25:49,910 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:25:49,912 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:25:49,914 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:25:49,915 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:25:49,916 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:25:49,917 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:25:49,918 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:25:49,920 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 22:25:49,921 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 22:25:49,921 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 22:25:49,922 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 22:25:49,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 22:25:49,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 22:25:49,923 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:25:49,924 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:25:49,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:25:49,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:25:49,927 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:25:49,927 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:25:49,927 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:25:49,928 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:25:49,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:25:49,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:25:49,929 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:25:49,930 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 22:25:49,944 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:25:49,945 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:25:49,946 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:25:49,946 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:25:49,946 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:25:49,947 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:25:49,947 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:25:49,947 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:25:49,947 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:25:49,947 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:25:49,947 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:25:49,948 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:25:49,948 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:25:49,948 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:25:49,948 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:25:49,948 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:25:49,949 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:25:49,949 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:25:49,949 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:25:49,949 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:25:49,949 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:25:49,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:25:49,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:25:49,950 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:25:49,950 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:25:49,950 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:25:49,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:25:49,951 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:25:49,951 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-06 22:25:50,242 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:25:50,255 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:25:50,259 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:25:50,261 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:25:50,261 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:25:50,262 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/mapavg5.i [2019-11-06 22:25:50,345 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36d20c393/e2d0256cb8514ee19a82f9d5fcd471fc/FLAG4fb470f85 [2019-11-06 22:25:50,771 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:25:50,771 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/mapavg5.i [2019-11-06 22:25:50,777 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36d20c393/e2d0256cb8514ee19a82f9d5fcd471fc/FLAG4fb470f85 [2019-11-06 22:25:51,145 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36d20c393/e2d0256cb8514ee19a82f9d5fcd471fc [2019-11-06 22:25:51,153 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:25:51,154 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:25:51,155 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:25:51,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:25:51,159 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:25:51,160 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:25:51" (1/1) ... [2019-11-06 22:25:51,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@134c9855 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:51, skipping insertion in model container [2019-11-06 22:25:51,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:25:51" (1/1) ... [2019-11-06 22:25:51,170 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:25:51,194 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:25:51,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:25:51,417 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:25:51,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:25:51,452 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:25:51,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:51 WrapperNode [2019-11-06 22:25:51,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:25:51,454 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:25:51,454 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:25:51,454 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:25:51,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:51" (1/1) ... [2019-11-06 22:25:51,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:51" (1/1) ... [2019-11-06 22:25:51,565 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:51" (1/1) ... [2019-11-06 22:25:51,565 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:51" (1/1) ... [2019-11-06 22:25:51,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:51" (1/1) ... [2019-11-06 22:25:51,582 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:51" (1/1) ... [2019-11-06 22:25:51,584 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:51" (1/1) ... [2019-11-06 22:25:51,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:25:51,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:25:51,587 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:25:51,588 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:25:51,592 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:51" (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 [2019-11-06 22:25:51,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:25:51,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:25:51,644 INFO L138 BoogieDeclarations]: Found implementation of procedure mapavg [2019-11-06 22:25:51,644 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:25:51,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:25:51,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:25:51,645 INFO L130 BoogieDeclarations]: Found specification of procedure mapavg [2019-11-06 22:25:51,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:25:51,645 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:25:51,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:25:51,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:25:51,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:25:51,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:25:51,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:25:51,956 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:25:51,956 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-06 22:25:51,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:25:51 BoogieIcfgContainer [2019-11-06 22:25:51,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:25:51,965 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:25:51,966 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:25:51,969 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:25:51,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:25:51" (1/3) ... [2019-11-06 22:25:51,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cbd4c1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:25:51, skipping insertion in model container [2019-11-06 22:25:51,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:51" (2/3) ... [2019-11-06 22:25:51,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cbd4c1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:25:51, skipping insertion in model container [2019-11-06 22:25:51,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:25:51" (3/3) ... [2019-11-06 22:25:51,973 INFO L109 eAbstractionObserver]: Analyzing ICFG mapavg5.i [2019-11-06 22:25:51,983 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:25:51,990 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:25:52,009 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:25:52,040 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:25:52,040 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:25:52,040 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:25:52,040 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:25:52,040 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:25:52,040 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:25:52,040 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:25:52,040 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:25:52,056 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-11-06 22:25:52,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-06 22:25:52,062 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:25:52,063 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:25:52,065 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:25:52,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:25:52,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1453772458, now seen corresponding path program 1 times [2019-11-06 22:25:52,076 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:25:52,077 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571572606] [2019-11-06 22:25:52,077 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:25:52,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:25:52,199 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571572606] [2019-11-06 22:25:52,200 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2019-11-06 22:25:52,200 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916527656] [2019-11-06 22:25:52,200 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 [2019-11-06 22:25:52,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:25:52,306 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-06 22:25:52,314 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:25:52,340 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 22:25:52,343 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:25:52,396 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 22:25:52,397 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:25:52,398 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-06 22:25:52,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438200611] [2019-11-06 22:25:52,408 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 22:25:52,410 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:25:52,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 22:25:52,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 22:25:52,431 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2019-11-06 22:25:52,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:25:52,467 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2019-11-06 22:25:52,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:25:52,469 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 33 [2019-11-06 22:25:52,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:25:52,481 INFO L225 Difference]: With dead ends: 57 [2019-11-06 22:25:52,482 INFO L226 Difference]: Without dead ends: 27 [2019-11-06 22:25:52,489 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 22:25:52,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-06 22:25:52,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-11-06 22:25:52,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-06 22:25:52,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2019-11-06 22:25:52,547 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 33 [2019-11-06 22:25:52,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:25:52,548 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2019-11-06 22:25:52,548 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 22:25:52,549 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2019-11-06 22:25:52,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-06 22:25:52,553 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:25:52,553 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:25:52,757 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:25:52,757 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:25:52,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:25:52,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1976009436, now seen corresponding path program 1 times [2019-11-06 22:25:52,758 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:25:52,759 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896041587] [2019-11-06 22:25:52,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:25:52,796 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-06 22:25:52,797 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [374956284] [2019-11-06 22:25:52,797 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 [2019-11-06 22:25:52,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:25:52,860 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 22:25:52,863 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:25:52,898 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 22:25:52,898 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:25:52,929 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 22:25:52,930 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896041587] [2019-11-06 22:25:52,930 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-06 22:25:52,931 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374956284] [2019-11-06 22:25:52,931 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:25:52,931 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-06 22:25:52,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143703200] [2019-11-06 22:25:52,933 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:25:52,933 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:25:52,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:25:52,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:25:52,934 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 4 states. [2019-11-06 22:25:52,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:25:52,998 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2019-11-06 22:25:52,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:25:52,999 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2019-11-06 22:25:53,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:25:53,001 INFO L225 Difference]: With dead ends: 48 [2019-11-06 22:25:53,001 INFO L226 Difference]: Without dead ends: 30 [2019-11-06 22:25:53,002 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:25:53,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-06 22:25:53,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-11-06 22:25:53,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-06 22:25:53,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2019-11-06 22:25:53,010 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 33 [2019-11-06 22:25:53,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:25:53,010 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2019-11-06 22:25:53,010 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:25:53,011 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2019-11-06 22:25:53,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-06 22:25:53,012 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:25:53,012 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:25:53,215 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:25:53,216 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:25:53,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:25:53,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1480690264, now seen corresponding path program 1 times [2019-11-06 22:25:53,217 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:25:53,218 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702078943] [2019-11-06 22:25:53,218 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:25:53,245 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-06 22:25:53,246 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1184424507] [2019-11-06 22:25:53,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:25:53,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:25:53,337 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 22:25:53,353 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:25:53,382 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 22:25:53,382 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:25:53,458 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-11-06 22:25:53,458 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702078943] [2019-11-06 22:25:53,458 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-06 22:25:53,459 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184424507] [2019-11-06 22:25:53,459 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 22:25:53,459 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2019-11-06 22:25:53,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462238256] [2019-11-06 22:25:53,460 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:25:53,461 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:25:53,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:25:53,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:25:53,461 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 4 states. [2019-11-06 22:25:53,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:25:53,525 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2019-11-06 22:25:53,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:25:53,526 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2019-11-06 22:25:53,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:25:53,527 INFO L225 Difference]: With dead ends: 49 [2019-11-06 22:25:53,528 INFO L226 Difference]: Without dead ends: 32 [2019-11-06 22:25:53,528 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:25:53,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-06 22:25:53,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2019-11-06 22:25:53,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-06 22:25:53,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2019-11-06 22:25:53,540 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 37 [2019-11-06 22:25:53,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:25:53,542 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2019-11-06 22:25:53,542 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:25:53,542 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2019-11-06 22:25:53,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-11-06 22:25:53,545 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:25:53,545 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:25:53,751 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:25:53,751 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:25:53,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:25:53,752 INFO L82 PathProgramCache]: Analyzing trace with hash -36652570, now seen corresponding path program 1 times [2019-11-06 22:25:53,753 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:25:53,753 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45183310] [2019-11-06 22:25:53,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:25:53,771 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-06 22:25:53,772 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [271233184] [2019-11-06 22:25:53,772 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-11-06 22:25:53,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:25:53,833 INFO L256 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 22:25:53,835 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:25:53,862 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-06 22:25:53,862 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:25:53,934 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-11-06 22:25:53,934 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45183310] [2019-11-06 22:25:53,935 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-06 22:25:53,935 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271233184] [2019-11-06 22:25:53,935 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1695639934] [2019-11-06 22:25:53,942 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 44 [2019-11-06 22:25:53,997 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-06 22:25:53,997 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-06 22:25:54,097 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-06 22:25:54,099 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Performed 21 root evaluator evaluations with a maximum evaluation depth of 2. Performed 21 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Never found a fixpoint. Largest state had 31 variables. [2019-11-06 22:25:54,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:25:54,103 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-11-06 22:25:54,186 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 96.67% of their original sizes. [2019-11-06 22:25:54,186 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-11-06 22:25:54,190 INFO L553 sIntCurrentIteration]: We unified 42 AI predicates to 42 [2019-11-06 22:25:54,190 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-11-06 22:25:54,191 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-06 22:25:54,192 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 6] total 9 [2019-11-06 22:25:54,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830167612] [2019-11-06 22:25:54,193 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:25:54,193 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:25:54,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:25:54,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:25:54,194 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 3 states. [2019-11-06 22:25:54,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:25:54,398 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:25:54,398 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: at least one of both input predicates is unknown: 993#true or 1310#(and (<= ~N~0 2147483647) (<= 0 (+ ~N~0 2147483648))) ([#1{~N~0 = [-2147483648;2147483647]; }]) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$CoverageRelation.isCovered(PredicateUnifier.java:593) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.SdHoareTripleChecker$CheckHelper.check(SdHoareTripleChecker.java:153) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.SdHoareTripleChecker.checkCall(SdHoareTripleChecker.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.EfficientHoareTripleChecker.checkCall(EfficientHoareTripleChecker.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.checkCall(CachingHoareTripleChecker.java:125) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$CallSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:403) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.callSuccessors(AbstractInterpolantAutomaton.java:257) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.callSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.callSuccessors(TotalizeNwa.java:260) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.callSuccessors(ComplementDeterministicNwa.java:131) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.callSuccessors(ProductNwa.java:252) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.callSuccessors(ProductNwa.java:244) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addCallsAndSuccessors(NestedWordAutomatonReachableStates.java:1089) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:969) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:188) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:698) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:627) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:454) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) 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) [2019-11-06 22:25:54,404 INFO L168 Benchmark]: Toolchain (without parser) took 3248.79 ms. Allocated memory was 144.2 MB in the beginning and 233.3 MB in the end (delta: 89.1 MB). Free memory was 102.1 MB in the beginning and 138.6 MB in the end (delta: -36.4 MB). Peak memory consumption was 52.7 MB. Max. memory is 7.1 GB. [2019-11-06 22:25:54,405 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-06 22:25:54,406 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.39 ms. Allocated memory is still 144.2 MB. Free memory was 101.9 MB in the beginning and 91.3 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2019-11-06 22:25:54,407 INFO L168 Benchmark]: Boogie Preprocessor took 133.38 ms. Allocated memory was 144.2 MB in the beginning and 202.4 MB in the end (delta: 58.2 MB). Free memory was 91.3 MB in the beginning and 179.9 MB in the end (delta: -88.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2019-11-06 22:25:54,408 INFO L168 Benchmark]: RCFGBuilder took 370.52 ms. Allocated memory is still 202.4 MB. Free memory was 179.9 MB in the beginning and 162.5 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. [2019-11-06 22:25:54,409 INFO L168 Benchmark]: TraceAbstraction took 2436.05 ms. Allocated memory was 202.4 MB in the beginning and 233.3 MB in the end (delta: 30.9 MB). Free memory was 162.5 MB in the beginning and 138.6 MB in the end (delta: 24.0 MB). Peak memory consumption was 54.9 MB. Max. memory is 7.1 GB. [2019-11-06 22:25:54,419 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 298.39 ms. Allocated memory is still 144.2 MB. Free memory was 101.9 MB in the beginning and 91.3 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.38 ms. Allocated memory was 144.2 MB in the beginning and 202.4 MB in the end (delta: 58.2 MB). Free memory was 91.3 MB in the beginning and 179.9 MB in the end (delta: -88.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 370.52 ms. Allocated memory is still 202.4 MB. Free memory was 179.9 MB in the beginning and 162.5 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2436.05 ms. Allocated memory was 202.4 MB in the beginning and 233.3 MB in the end (delta: 30.9 MB). Free memory was 162.5 MB in the beginning and 138.6 MB in the end (delta: 24.0 MB). Peak memory consumption was 54.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: at least one of both input predicates is unknown: 993#true or 1310#(and (<= ~N~0 2147483647) (<= 0 (+ ~N~0 2147483648))) ([#1{~N~0 = [-2147483648;2147483647]; }]) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: at least one of both input predicates is unknown: 993#true or 1310#(and (<= ~N~0 2147483647) (<= 0 (+ ~N~0 2147483648))) ([#1{~N~0 = [-2147483648;2147483647]; }]): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$CoverageRelation.isCovered(PredicateUnifier.java:593) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...