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/zero_sum_m3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:51:51,187 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:51:51,190 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:51:51,210 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:51:51,210 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:51:51,212 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:51:51,214 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:51:51,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:51:51,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:51:51,234 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:51:51,235 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:51:51,236 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:51:51,237 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:51:51,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:51:51,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:51:51,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:51:51,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:51:51,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:51:51,246 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:51:51,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:51:51,255 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:51:51,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:51:51,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:51:51,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:51:51,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:51:51,264 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:51:51,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:51:51,266 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:51:51,267 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:51:51,268 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:51:51,268 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:51:51,270 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:51:51,272 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:51:51,273 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:51:51,274 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:51:51,275 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:51:51,276 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:51:51,276 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:51:51,276 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:51:51,277 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:51:51,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:51:51,279 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 [2019-10-14 23:51:51,312 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:51:51,312 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:51:51,313 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:51:51,313 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:51:51,314 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:51:51,314 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:51:51,319 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:51:51,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:51:51,319 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:51:51,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:51:51,319 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:51:51,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:51:51,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:51:51,320 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:51:51,320 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:51:51,322 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:51:51,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:51:51,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:51:51,323 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:51:51,323 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:51:51,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:51:51,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:51:51,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:51:51,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:51:51,327 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:51:51,327 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:51:51,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:51:51,328 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:51:51,328 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 [2019-10-14 23:51:51,610 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:51:51,623 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:51:51,626 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:51:51,628 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:51:51,628 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:51:51,629 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum_m3.c [2019-10-14 23:51:51,702 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/884728df3/a301bbaa4f384af3908ff7fa8d06714d/FLAG296b77ad3 [2019-10-14 23:51:52,168 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:51:52,168 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/zero_sum_m3.c [2019-10-14 23:51:52,174 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/884728df3/a301bbaa4f384af3908ff7fa8d06714d/FLAG296b77ad3 [2019-10-14 23:51:52,521 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/884728df3/a301bbaa4f384af3908ff7fa8d06714d [2019-10-14 23:51:52,531 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:51:52,532 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:51:52,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:51:52,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:51:52,537 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:51:52,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:51:52" (1/1) ... [2019-10-14 23:51:52,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a5bf3ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:52, skipping insertion in model container [2019-10-14 23:51:52,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:51:52" (1/1) ... [2019-10-14 23:51:52,549 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:51:52,568 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:51:52,777 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:51:52,781 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:51:52,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:51:52,829 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:51:52,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:52 WrapperNode [2019-10-14 23:51:52,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:51:52,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:51:52,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:51:52,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:51:52,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:52" (1/1) ... [2019-10-14 23:51:52,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:52" (1/1) ... [2019-10-14 23:51:52,927 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:52" (1/1) ... [2019-10-14 23:51:52,928 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:52" (1/1) ... [2019-10-14 23:51:52,936 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:52" (1/1) ... [2019-10-14 23:51:52,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:52" (1/1) ... [2019-10-14 23:51:52,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:52" (1/1) ... [2019-10-14 23:51:52,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:51:52,948 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:51:52,948 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:51:52,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:51:52,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:52" (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 [2019-10-14 23:51:53,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:51:53,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:51:53,011 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-14 23:51:53,011 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:51:53,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:51:53,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-14 23:51:53,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-14 23:51:53,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2019-10-14 23:51:53,012 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:51:53,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:51:53,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:51:53,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:51:53,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:51:53,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:51:53,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:51:53,339 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:51:53,340 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-10-14 23:51:53,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:51:53 BoogieIcfgContainer [2019-10-14 23:51:53,343 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:51:53,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:51:53,349 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:51:53,353 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:51:53,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:51:52" (1/3) ... [2019-10-14 23:51:53,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c67b748 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:51:53, skipping insertion in model container [2019-10-14 23:51:53,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:52" (2/3) ... [2019-10-14 23:51:53,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c67b748 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:51:53, skipping insertion in model container [2019-10-14 23:51:53,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:51:53" (3/3) ... [2019-10-14 23:51:53,356 INFO L109 eAbstractionObserver]: Analyzing ICFG zero_sum_m3.c [2019-10-14 23:51:53,363 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:51:53,371 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:51:53,383 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:51:53,410 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:51:53,410 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:51:53,410 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:51:53,411 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:51:53,411 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:51:53,411 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:51:53,411 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:51:53,411 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:51:53,428 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2019-10-14 23:51:53,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-14 23:51:53,435 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:51:53,436 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:51:53,438 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:51:53,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:51:53,445 INFO L82 PathProgramCache]: Analyzing trace with hash -604531369, now seen corresponding path program 1 times [2019-10-14 23:51:53,452 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:51:53,453 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653263049] [2019-10-14 23:51:53,453 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:51:53,453 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:51:53,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:51:53,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:51:53,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:51:53,591 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653263049] [2019-10-14 23:51:53,592 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:51:53,592 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-14 23:51:53,592 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56576329] [2019-10-14 23:51:53,597 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:51:53,598 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:51:53,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:51:53,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:51:53,612 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2019-10-14 23:51:53,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:51:53,638 INFO L93 Difference]: Finished difference Result 71 states and 99 transitions. [2019-10-14 23:51:53,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:51:53,645 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2019-10-14 23:51:53,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:51:53,654 INFO L225 Difference]: With dead ends: 71 [2019-10-14 23:51:53,654 INFO L226 Difference]: Without dead ends: 32 [2019-10-14 23:51:53,658 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:51:53,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-10-14 23:51:53,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-10-14 23:51:53,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-10-14 23:51:53,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2019-10-14 23:51:53,696 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 24 [2019-10-14 23:51:53,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:51:53,696 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2019-10-14 23:51:53,697 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:51:53,697 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2019-10-14 23:51:53,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-14 23:51:53,698 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:51:53,698 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:51:53,699 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:51:53,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:51:53,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1170586821, now seen corresponding path program 1 times [2019-10-14 23:51:53,700 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:51:53,700 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161107300] [2019-10-14 23:51:53,700 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:51:53,701 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:51:53,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:51:53,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:51:53,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:51:53,843 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161107300] [2019-10-14 23:51:53,843 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:51:53,844 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:51:53,844 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662474649] [2019-10-14 23:51:53,846 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:51:53,846 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:51:53,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:51:53,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:51:53,847 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 5 states. [2019-10-14 23:51:53,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:51:53,936 INFO L93 Difference]: Finished difference Result 48 states and 59 transitions. [2019-10-14 23:51:53,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:51:53,937 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2019-10-14 23:51:53,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:51:53,938 INFO L225 Difference]: With dead ends: 48 [2019-10-14 23:51:53,939 INFO L226 Difference]: Without dead ends: 43 [2019-10-14 23:51:53,940 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:51:53,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-10-14 23:51:53,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2019-10-14 23:51:53,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-10-14 23:51:53,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2019-10-14 23:51:53,951 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 24 [2019-10-14 23:51:53,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:51:53,951 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2019-10-14 23:51:53,951 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:51:53,952 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2019-10-14 23:51:53,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-14 23:51:53,953 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:51:53,953 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:51:53,954 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:51:53,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:51:53,954 INFO L82 PathProgramCache]: Analyzing trace with hash 669656451, now seen corresponding path program 1 times [2019-10-14 23:51:53,954 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:51:53,955 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856055936] [2019-10-14 23:51:53,955 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:51:53,955 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:51:53,955 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:51:54,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:51:54,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:51:54,055 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856055936] [2019-10-14 23:51:54,055 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:51:54,055 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:51:54,056 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188681370] [2019-10-14 23:51:54,056 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:51:54,057 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:51:54,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:51:54,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:51:54,058 INFO L87 Difference]: Start difference. First operand 43 states and 54 transitions. Second operand 3 states. [2019-10-14 23:51:54,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:51:54,141 INFO L93 Difference]: Finished difference Result 79 states and 101 transitions. [2019-10-14 23:51:54,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:51:54,143 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2019-10-14 23:51:54,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:51:54,146 INFO L225 Difference]: With dead ends: 79 [2019-10-14 23:51:54,146 INFO L226 Difference]: Without dead ends: 45 [2019-10-14 23:51:54,147 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:51:54,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-10-14 23:51:54,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2019-10-14 23:51:54,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-10-14 23:51:54,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2019-10-14 23:51:54,163 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 26 [2019-10-14 23:51:54,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:51:54,164 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2019-10-14 23:51:54,164 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:51:54,164 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2019-10-14 23:51:54,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-14 23:51:54,166 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:51:54,166 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:51:54,167 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:51:54,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:51:54,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1075251265, now seen corresponding path program 1 times [2019-10-14 23:51:54,168 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:51:54,168 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192975137] [2019-10-14 23:51:54,168 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:51:54,169 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:51:54,169 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:51:54,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:51:54,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-14 23:51:54,276 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192975137] [2019-10-14 23:51:54,277 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:51:54,277 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:51:54,277 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518830474] [2019-10-14 23:51:54,278 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:51:54,279 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:51:54,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:51:54,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:51:54,280 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand 4 states. [2019-10-14 23:51:54,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:51:54,392 INFO L93 Difference]: Finished difference Result 74 states and 94 transitions. [2019-10-14 23:51:54,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:51:54,394 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2019-10-14 23:51:54,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:51:54,395 INFO L225 Difference]: With dead ends: 74 [2019-10-14 23:51:54,395 INFO L226 Difference]: Without dead ends: 45 [2019-10-14 23:51:54,396 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:51:54,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-10-14 23:51:54,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2019-10-14 23:51:54,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-10-14 23:51:54,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2019-10-14 23:51:54,404 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 28 [2019-10-14 23:51:54,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:51:54,405 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2019-10-14 23:51:54,405 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:51:54,405 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2019-10-14 23:51:54,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-14 23:51:54,406 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:51:54,406 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:51:54,407 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:51:54,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:51:54,407 INFO L82 PathProgramCache]: Analyzing trace with hash -215297609, now seen corresponding path program 1 times [2019-10-14 23:51:54,408 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:51:54,408 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312583325] [2019-10-14 23:51:54,408 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:51:54,408 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:51:54,408 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:51:54,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:51:54,473 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-14 23:51:54,474 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312583325] [2019-10-14 23:51:54,474 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243008767] [2019-10-14 23:51:54,474 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 [2019-10-14 23:51:54,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:51:54,583 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 23:51:54,593 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:51:54,648 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-14 23:51:54,649 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:51:54,678 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-14 23:51:54,679 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1000467810] [2019-10-14 23:51:54,685 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 39 [2019-10-14 23:51:54,722 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-14 23:51:54,723 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-14 23:51:54,798 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-14 23:51:54,800 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 34 variables. [2019-10-14 23:51:54,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:51:54,805 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-14 23:51:54,860 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 96.67% of their original sizes. [2019-10-14 23:51:54,861 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-14 23:51:54,865 INFO L553 sIntCurrentIteration]: We unified 37 AI predicates to 37 [2019-10-14 23:51:54,865 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-14 23:51:54,866 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-14 23:51:54,866 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4, 4] total 8 [2019-10-14 23:51:54,867 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410943184] [2019-10-14 23:51:54,867 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:51:54,868 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-14 23:51:54,868 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-14 23:51:54,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:51:54,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:51:54,869 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 3 states. [2019-10-14 23:51:54,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:51:54,873 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2019-10-14 23:51:54,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:51:54,873 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2019-10-14 23:51:54,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:51:54,874 INFO L225 Difference]: With dead ends: 39 [2019-10-14 23:51:54,874 INFO L226 Difference]: Without dead ends: 0 [2019-10-14 23:51:54,874 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:51:54,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-14 23:51:54,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-14 23:51:54,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-14 23:51:54,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-14 23:51:54,875 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2019-10-14 23:51:54,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:51:54,876 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-14 23:51:54,876 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:51:54,876 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-14 23:51:54,876 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-14 23:51:55,079 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:51:55,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-14 23:51:55,166 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:51:55,167 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:51:55,167 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:51:55,167 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:51:55,167 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (<= 0 (+ ~SIZE~0 32768)) (<= ~SIZE~0 32767)) [2019-10-14 23:51:55,167 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:51:55,168 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:51:55,168 INFO L443 ceAbstractionStarter]: For program point L27-2(lines 27 30) no Hoare annotation was computed. [2019-10-14 23:51:55,168 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 8 55) no Hoare annotation was computed. [2019-10-14 23:51:55,168 INFO L439 ceAbstractionStarter]: At program point L27-3(lines 27 30) the Hoare annotation is: (or (not (<= 0 (+ |old(~SIZE~0)| 32768))) (not (<= |old(~SIZE~0)| 32767))) [2019-10-14 23:51:55,168 INFO L443 ceAbstractionStarter]: For program point L27-4(lines 27 30) no Hoare annotation was computed. [2019-10-14 23:51:55,168 INFO L443 ceAbstractionStarter]: For program point L52(line 52) no Hoare annotation was computed. [2019-10-14 23:51:55,169 INFO L443 ceAbstractionStarter]: For program point L11(lines 11 53) no Hoare annotation was computed. [2019-10-14 23:51:55,169 INFO L443 ceAbstractionStarter]: For program point L11-2(lines 11 53) no Hoare annotation was computed. [2019-10-14 23:51:55,169 INFO L443 ceAbstractionStarter]: For program point L32-2(lines 32 35) no Hoare annotation was computed. [2019-10-14 23:51:55,169 INFO L439 ceAbstractionStarter]: At program point L32-3(lines 32 35) the Hoare annotation is: (or (not (<= 0 (+ |old(~SIZE~0)| 32768))) (not (<= |old(~SIZE~0)| 32767))) [2019-10-14 23:51:55,169 INFO L443 ceAbstractionStarter]: For program point L32-4(lines 32 35) no Hoare annotation was computed. [2019-10-14 23:51:55,169 INFO L443 ceAbstractionStarter]: For program point L37-2(lines 37 40) no Hoare annotation was computed. [2019-10-14 23:51:55,169 INFO L439 ceAbstractionStarter]: At program point L37-3(lines 37 40) the Hoare annotation is: (or (not (<= 0 (+ |old(~SIZE~0)| 32768))) (not (<= |old(~SIZE~0)| 32767))) [2019-10-14 23:51:55,170 INFO L443 ceAbstractionStarter]: For program point L37-4(lines 37 40) no Hoare annotation was computed. [2019-10-14 23:51:55,170 INFO L443 ceAbstractionStarter]: For program point L17-2(lines 17 20) no Hoare annotation was computed. [2019-10-14 23:51:55,170 INFO L439 ceAbstractionStarter]: At program point L17-3(lines 17 20) the Hoare annotation is: (or (not (<= 0 (+ |old(~SIZE~0)| 32768))) (not (<= |old(~SIZE~0)| 32767))) [2019-10-14 23:51:55,170 INFO L443 ceAbstractionStarter]: For program point L17-4(lines 17 20) no Hoare annotation was computed. [2019-10-14 23:51:55,170 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 8 55) no Hoare annotation was computed. [2019-10-14 23:51:55,170 INFO L443 ceAbstractionStarter]: For program point L42-2(lines 42 45) no Hoare annotation was computed. [2019-10-14 23:51:55,171 INFO L439 ceAbstractionStarter]: At program point L42-3(lines 42 45) the Hoare annotation is: (or (not (<= 0 (+ |old(~SIZE~0)| 32768))) (not (<= |old(~SIZE~0)| 32767))) [2019-10-14 23:51:55,171 INFO L443 ceAbstractionStarter]: For program point L42-4(lines 42 45) no Hoare annotation was computed. [2019-10-14 23:51:55,171 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 8 55) the Hoare annotation is: (or (not (<= 0 (+ |old(~SIZE~0)| 32768))) (and (<= 0 (+ ~SIZE~0 32768)) (<= ~SIZE~0 32767)) (not (<= |old(~SIZE~0)| 32767))) [2019-10-14 23:51:55,171 INFO L443 ceAbstractionStarter]: For program point L22-2(lines 22 25) no Hoare annotation was computed. [2019-10-14 23:51:55,171 INFO L439 ceAbstractionStarter]: At program point L22-3(lines 22 25) the Hoare annotation is: (or (not (<= 0 (+ |old(~SIZE~0)| 32768))) (not (<= |old(~SIZE~0)| 32767))) [2019-10-14 23:51:55,171 INFO L443 ceAbstractionStarter]: For program point L22-4(lines 22 25) no Hoare annotation was computed. [2019-10-14 23:51:55,172 INFO L443 ceAbstractionStarter]: For program point L47-2(lines 47 50) no Hoare annotation was computed. [2019-10-14 23:51:55,172 INFO L439 ceAbstractionStarter]: At program point L47-3(lines 47 50) the Hoare annotation is: (or (not (<= 0 (+ |old(~SIZE~0)| 32768))) (not (<= |old(~SIZE~0)| 32767))) [2019-10-14 23:51:55,172 INFO L439 ceAbstractionStarter]: At program point L47-4(lines 47 50) the Hoare annotation is: (or (= main_~sum~0 0) (not (<= 0 (+ |old(~SIZE~0)| 32768))) (not (<= |old(~SIZE~0)| 32767))) [2019-10-14 23:51:55,172 INFO L443 ceAbstractionStarter]: For program point L3-3(line 3) no Hoare annotation was computed. [2019-10-14 23:51:55,172 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 3) the Hoare annotation is: true [2019-10-14 23:51:55,172 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 3) no Hoare annotation was computed. [2019-10-14 23:51:55,172 INFO L443 ceAbstractionStarter]: For program point L3(line 3) no Hoare annotation was computed. [2019-10-14 23:51:55,173 INFO L443 ceAbstractionStarter]: For program point L3-1(line 3) no Hoare annotation was computed. [2019-10-14 23:51:55,173 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2019-10-14 23:51:55,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:51:55 BoogieIcfgContainer [2019-10-14 23:51:55,200 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-14 23:51:55,203 INFO L168 Benchmark]: Toolchain (without parser) took 2669.77 ms. Allocated memory was 138.4 MB in the beginning and 234.9 MB in the end (delta: 96.5 MB). Free memory was 103.3 MB in the beginning and 165.3 MB in the end (delta: -62.0 MB). Peak memory consumption was 34.5 MB. Max. memory is 7.1 GB. [2019-10-14 23:51:55,204 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-14 23:51:55,205 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.95 ms. Allocated memory is still 138.4 MB. Free memory was 103.1 MB in the beginning and 92.5 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2019-10-14 23:51:55,206 INFO L168 Benchmark]: Boogie Preprocessor took 117.50 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 92.5 MB in the beginning and 179.9 MB in the end (delta: -87.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2019-10-14 23:51:55,206 INFO L168 Benchmark]: RCFGBuilder took 395.75 ms. Allocated memory is still 201.9 MB. Free memory was 179.9 MB in the beginning and 160.9 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2019-10-14 23:51:55,207 INFO L168 Benchmark]: TraceAbstraction took 1851.38 ms. Allocated memory was 201.9 MB in the beginning and 234.9 MB in the end (delta: 33.0 MB). Free memory was 160.9 MB in the beginning and 165.3 MB in the end (delta: -4.4 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. [2019-10-14 23:51:55,211 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 295.95 ms. Allocated memory is still 138.4 MB. Free memory was 103.1 MB in the beginning and 92.5 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.50 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 92.5 MB in the beginning and 179.9 MB in the end (delta: -87.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 395.75 ms. Allocated memory is still 201.9 MB. Free memory was 179.9 MB in the beginning and 160.9 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1851.38 ms. Allocated memory was 201.9 MB in the beginning and 234.9 MB in the end (delta: 33.0 MB). Free memory was 160.9 MB in the beginning and 165.3 MB in the end (delta: -4.4 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: !(0 <= \old(SIZE) + 32768) || !(\old(SIZE) <= 32767) - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: !(0 <= \old(SIZE) + 32768) || !(\old(SIZE) <= 32767) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: !(0 <= \old(SIZE) + 32768) || !(\old(SIZE) <= 32767) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: !(0 <= \old(SIZE) + 32768) || !(\old(SIZE) <= 32767) - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: !(0 <= \old(SIZE) + 32768) || !(\old(SIZE) <= 32767) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: !(0 <= \old(SIZE) + 32768) || !(\old(SIZE) <= 32767) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: !(0 <= \old(SIZE) + 32768) || !(\old(SIZE) <= 32767) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 40 locations, 1 error locations. Result: SAFE, OverallTime: 1.7s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 138 SDtfs, 47 SDslu, 115 SDs, 0 SdLazy, 93 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 17 PreInvPairs, 18 NumberOfFragments, 123 HoareAnnotationTreeSize, 17 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 178 NumberOfCodeBlocks, 178 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 209 ConstructedInterpolants, 0 QuantifiedInterpolants, 9531 SizeOfPredicates, 3 NumberOfNonLiveVariables, 118 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 21/24 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 120, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.972972972972973, AVG_VARS_REMOVED_DURING_WEAKENING: 0.8108108108108109, AVG_WEAKENED_CONJUNCTS: 0.43243243243243246, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...