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_sum1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:52:47,527 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:52:47,530 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:52:47,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:52:47,542 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:52:47,543 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:52:47,545 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:52:47,547 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:52:47,549 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:52:47,549 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:52:47,550 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:52:47,552 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:52:47,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:52:47,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:52:47,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:52:47,555 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:52:47,556 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:52:47,557 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:52:47,559 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:52:47,561 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:52:47,563 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:52:47,564 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:52:47,565 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:52:47,566 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:52:47,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:52:47,569 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:52:47,569 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:52:47,570 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:52:47,571 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:52:47,572 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:52:47,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:52:47,573 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:52:47,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:52:47,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:52:47,576 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:52:47,576 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:52:47,577 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:52:47,577 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:52:47,577 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:52:47,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:52:47,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:52:47,580 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 [2019-10-13 19:52:47,595 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:52:47,595 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:52:47,597 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:52:47,597 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:52:47,597 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:52:47,597 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:52:47,598 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:52:47,598 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:52:47,598 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:52:47,598 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:52:47,598 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:52:47,599 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:52:47,599 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:52:47,599 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:52:47,599 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:52:47,599 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:52:47,599 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:52:47,600 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:52:47,600 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:52:47,600 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:52:47,600 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:52:47,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:52:47,601 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:52:47,601 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:52:47,601 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:52:47,601 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:52:47,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:52:47,602 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:52:47,602 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 [2019-10-13 19:52:47,875 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:52:47,895 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:52:47,899 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:52:47,900 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:52:47,901 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:52:47,901 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum1.c [2019-10-13 19:52:47,980 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59fcaa64b/523c702c5ff44bbb819fbdc5a2262d1c/FLAGaa44716b5 [2019-10-13 19:52:48,452 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:52:48,454 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/zero_sum1.c [2019-10-13 19:52:48,460 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59fcaa64b/523c702c5ff44bbb819fbdc5a2262d1c/FLAGaa44716b5 [2019-10-13 19:52:48,858 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59fcaa64b/523c702c5ff44bbb819fbdc5a2262d1c [2019-10-13 19:52:48,868 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:52:48,870 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:52:48,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:52:48,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:52:48,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:52:48,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:52:48" (1/1) ... [2019-10-13 19:52:48,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c9fb768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:48, skipping insertion in model container [2019-10-13 19:52:48,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:52:48" (1/1) ... [2019-10-13 19:52:48,887 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:52:48,911 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:52:49,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:52:49,162 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:52:49,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:52:49,207 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:52:49,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:49 WrapperNode [2019-10-13 19:52:49,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:52:49,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:52:49,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:52:49,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:52:49,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:49" (1/1) ... [2019-10-13 19:52:49,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:49" (1/1) ... [2019-10-13 19:52:49,323 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:49" (1/1) ... [2019-10-13 19:52:49,323 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:49" (1/1) ... [2019-10-13 19:52:49,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:49" (1/1) ... [2019-10-13 19:52:49,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:49" (1/1) ... [2019-10-13 19:52:49,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:49" (1/1) ... [2019-10-13 19:52:49,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:52:49,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:52:49,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:52:49,348 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:52:49,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:49" (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 [2019-10-13 19:52:49,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:52:49,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:52:49,402 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 19:52:49,402 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:52:49,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:52:49,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 19:52:49,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 19:52:49,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2019-10-13 19:52:49,403 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:52:49,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:52:49,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:52:49,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:52:49,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:52:49,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:52:49,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:52:49,651 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:52:49,651 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-13 19:52:49,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:52:49 BoogieIcfgContainer [2019-10-13 19:52:49,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:52:49,654 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:52:49,654 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:52:49,657 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:52:49,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:52:48" (1/3) ... [2019-10-13 19:52:49,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f35d178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:52:49, skipping insertion in model container [2019-10-13 19:52:49,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:49" (2/3) ... [2019-10-13 19:52:49,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f35d178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:52:49, skipping insertion in model container [2019-10-13 19:52:49,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:52:49" (3/3) ... [2019-10-13 19:52:49,661 INFO L109 eAbstractionObserver]: Analyzing ICFG zero_sum1.c [2019-10-13 19:52:49,673 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:52:49,682 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:52:49,701 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:52:49,735 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:52:49,735 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:52:49,735 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:52:49,736 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:52:49,736 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:52:49,736 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:52:49,736 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:52:49,737 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:52:49,766 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-10-13 19:52:49,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-13 19:52:49,773 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:52:49,774 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:52:49,776 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:52:49,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:52:49,782 INFO L82 PathProgramCache]: Analyzing trace with hash -714575113, now seen corresponding path program 1 times [2019-10-13 19:52:49,793 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:52:49,793 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555554183] [2019-10-13 19:52:49,793 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:52:49,794 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:52:49,794 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:52:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:52:49,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:52:49,930 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555554183] [2019-10-13 19:52:49,931 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:52:49,931 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 19:52:49,931 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322428891] [2019-10-13 19:52:49,935 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:52:49,937 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:52:49,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:52:49,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:52:49,952 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-10-13 19:52:49,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:52:49,976 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2019-10-13 19:52:49,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:52:49,977 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-13 19:52:49,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:52:49,986 INFO L225 Difference]: With dead ends: 47 [2019-10-13 19:52:49,986 INFO L226 Difference]: Without dead ends: 20 [2019-10-13 19:52:49,990 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 [2019-10-13 19:52:50,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-13 19:52:50,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-10-13 19:52:50,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-13 19:52:50,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2019-10-13 19:52:50,028 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 16 [2019-10-13 19:52:50,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:52:50,029 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2019-10-13 19:52:50,029 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:52:50,029 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2019-10-13 19:52:50,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-13 19:52:50,030 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:52:50,031 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:52:50,031 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:52:50,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:52:50,032 INFO L82 PathProgramCache]: Analyzing trace with hash 504621157, now seen corresponding path program 1 times [2019-10-13 19:52:50,032 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:52:50,032 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528257303] [2019-10-13 19:52:50,033 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:52:50,033 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:52:50,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:52:50,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:52:50,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:52:50,153 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528257303] [2019-10-13 19:52:50,153 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:52:50,154 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:52:50,154 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359339332] [2019-10-13 19:52:50,156 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:52:50,156 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:52:50,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:52:50,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:52:50,157 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 5 states. [2019-10-13 19:52:50,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:52:50,220 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2019-10-13 19:52:50,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:52:50,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-10-13 19:52:50,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:52:50,222 INFO L225 Difference]: With dead ends: 28 [2019-10-13 19:52:50,222 INFO L226 Difference]: Without dead ends: 23 [2019-10-13 19:52:50,223 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 [2019-10-13 19:52:50,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-10-13 19:52:50,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-10-13 19:52:50,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-10-13 19:52:50,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2019-10-13 19:52:50,230 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 16 [2019-10-13 19:52:50,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:52:50,231 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2019-10-13 19:52:50,231 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:52:50,231 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2019-10-13 19:52:50,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-13 19:52:50,232 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:52:50,232 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:52:50,232 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:52:50,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:52:50,233 INFO L82 PathProgramCache]: Analyzing trace with hash 626778659, now seen corresponding path program 1 times [2019-10-13 19:52:50,233 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:52:50,234 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635315430] [2019-10-13 19:52:50,234 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:52:50,234 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:52:50,234 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:52:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:52:50,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:52:50,294 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635315430] [2019-10-13 19:52:50,294 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:52:50,298 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:52:50,299 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205046818] [2019-10-13 19:52:50,299 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:52:50,300 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:52:50,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:52:50,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:52:50,301 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 3 states. [2019-10-13 19:52:50,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:52:50,330 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2019-10-13 19:52:50,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:52:50,331 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-10-13 19:52:50,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:52:50,332 INFO L225 Difference]: With dead ends: 39 [2019-10-13 19:52:50,332 INFO L226 Difference]: Without dead ends: 25 [2019-10-13 19:52:50,333 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 [2019-10-13 19:52:50,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-10-13 19:52:50,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2019-10-13 19:52:50,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-10-13 19:52:50,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2019-10-13 19:52:50,339 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 18 [2019-10-13 19:52:50,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:52:50,340 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-10-13 19:52:50,340 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:52:50,340 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2019-10-13 19:52:50,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-13 19:52:50,341 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:52:50,341 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] [2019-10-13 19:52:50,342 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:52:50,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:52:50,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1697854689, now seen corresponding path program 1 times [2019-10-13 19:52:50,343 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:52:50,343 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250926004] [2019-10-13 19:52:50,344 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:52:50,344 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:52:50,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:52:50,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:52:50,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 19:52:50,405 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250926004] [2019-10-13 19:52:50,405 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:52:50,405 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:52:50,405 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067167348] [2019-10-13 19:52:50,406 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:52:50,406 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:52:50,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:52:50,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:52:50,407 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 4 states. [2019-10-13 19:52:50,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:52:50,463 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2019-10-13 19:52:50,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:52:50,464 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2019-10-13 19:52:50,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:52:50,465 INFO L225 Difference]: With dead ends: 34 [2019-10-13 19:52:50,465 INFO L226 Difference]: Without dead ends: 25 [2019-10-13 19:52:50,466 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 [2019-10-13 19:52:50,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-10-13 19:52:50,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2019-10-13 19:52:50,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-10-13 19:52:50,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2019-10-13 19:52:50,472 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 20 [2019-10-13 19:52:50,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:52:50,472 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2019-10-13 19:52:50,472 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:52:50,472 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2019-10-13 19:52:50,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-13 19:52:50,473 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:52:50,473 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] [2019-10-13 19:52:50,474 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:52:50,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:52:50,474 INFO L82 PathProgramCache]: Analyzing trace with hash 661319647, now seen corresponding path program 1 times [2019-10-13 19:52:50,474 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:52:50,475 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358241064] [2019-10-13 19:52:50,475 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:52:50,475 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:52:50,475 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:52:50,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:52:50,554 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 19:52:50,555 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358241064] [2019-10-13 19:52:50,556 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503041430] [2019-10-13 19:52:50,556 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 [2019-10-13 19:52:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:52:50,638 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 19:52:50,647 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:52:50,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 19:52:50,716 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 19:52:50,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 19:52:50,759 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1297375925] [2019-10-13 19:52:50,768 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 23 [2019-10-13 19:52:50,828 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-13 19:52:50,828 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-13 19:52:50,888 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-13 19:52:50,890 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 26 variables. [2019-10-13 19:52:50,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:52:50,893 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-13 19:52:50,958 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 96.67% of their original sizes. [2019-10-13 19:52:50,960 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-13 19:52:50,966 INFO L553 sIntCurrentIteration]: We unified 21 AI predicates to 21 [2019-10-13 19:52:50,966 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-13 19:52:50,967 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-13 19:52:50,967 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4, 4] total 8 [2019-10-13 19:52:50,968 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023206312] [2019-10-13 19:52:50,968 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:52:50,969 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-13 19:52:50,969 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-13 19:52:50,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:52:50,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:52:50,970 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 3 states. [2019-10-13 19:52:50,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:52:50,974 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2019-10-13 19:52:50,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:52:50,974 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2019-10-13 19:52:50,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:52:50,974 INFO L225 Difference]: With dead ends: 23 [2019-10-13 19:52:50,975 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 19:52:50,978 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:52:50,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 19:52:50,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 19:52:50,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 19:52:50,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 19:52:50,979 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2019-10-13 19:52:50,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:52:50,979 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 19:52:50,979 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:52:50,979 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 19:52:50,979 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 19:52:51,180 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:52:51,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 19:52:51,320 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:52:51,321 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:52:51,321 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:52:51,321 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:52:51,321 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (<= 0 (+ ~SIZE~0 32768)) (<= ~SIZE~0 32767)) [2019-10-13 19:52:51,321 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:52:51,322 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:52:51,322 INFO L443 ceAbstractionStarter]: For program point L31(line 31) no Hoare annotation was computed. [2019-10-13 19:52:51,322 INFO L443 ceAbstractionStarter]: For program point L27-2(lines 27 30) no Hoare annotation was computed. [2019-10-13 19:52:51,322 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 8 34) no Hoare annotation was computed. [2019-10-13 19:52:51,322 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))) [2019-10-13 19:52:51,322 INFO L439 ceAbstractionStarter]: At program point L27-4(lines 27 30) the Hoare annotation is: (or (= main_~sum~0 0) (not (<= 0 (+ |old(~SIZE~0)| 32768))) (not (<= |old(~SIZE~0)| 32767))) [2019-10-13 19:52:51,323 INFO L443 ceAbstractionStarter]: For program point L17-2(lines 17 20) no Hoare annotation was computed. [2019-10-13 19:52:51,323 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))) [2019-10-13 19:52:51,323 INFO L443 ceAbstractionStarter]: For program point L17-4(lines 17 20) no Hoare annotation was computed. [2019-10-13 19:52:51,323 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 8 34) no Hoare annotation was computed. [2019-10-13 19:52:51,323 INFO L443 ceAbstractionStarter]: For program point L11(lines 11 32) no Hoare annotation was computed. [2019-10-13 19:52:51,323 INFO L443 ceAbstractionStarter]: For program point L11-2(lines 11 32) no Hoare annotation was computed. [2019-10-13 19:52:51,324 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 8 34) the Hoare annotation is: (or (not (<= 0 (+ |old(~SIZE~0)| 32768))) (and (<= 0 (+ ~SIZE~0 32768)) (<= ~SIZE~0 32767)) (not (<= |old(~SIZE~0)| 32767))) [2019-10-13 19:52:51,324 INFO L443 ceAbstractionStarter]: For program point L22-2(lines 22 25) no Hoare annotation was computed. [2019-10-13 19:52:51,324 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))) [2019-10-13 19:52:51,324 INFO L443 ceAbstractionStarter]: For program point L22-4(lines 22 25) no Hoare annotation was computed. [2019-10-13 19:52:51,324 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2019-10-13 19:52:51,324 INFO L443 ceAbstractionStarter]: For program point L3-3(line 3) no Hoare annotation was computed. [2019-10-13 19:52:51,325 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 3) the Hoare annotation is: true [2019-10-13 19:52:51,325 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 3) no Hoare annotation was computed. [2019-10-13 19:52:51,325 INFO L443 ceAbstractionStarter]: For program point L3(line 3) no Hoare annotation was computed. [2019-10-13 19:52:51,325 INFO L443 ceAbstractionStarter]: For program point L3-1(line 3) no Hoare annotation was computed. [2019-10-13 19:52:51,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:52:51 BoogieIcfgContainer [2019-10-13 19:52:51,338 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 19:52:51,340 INFO L168 Benchmark]: Toolchain (without parser) took 2470.08 ms. Allocated memory was 144.7 MB in the beginning and 234.9 MB in the end (delta: 90.2 MB). Free memory was 100.7 MB in the beginning and 192.1 MB in the end (delta: -91.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-10-13 19:52:51,341 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 144.7 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 19:52:51,342 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.77 ms. Allocated memory is still 144.7 MB. Free memory was 100.5 MB in the beginning and 90.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2019-10-13 19:52:51,343 INFO L168 Benchmark]: Boogie Preprocessor took 138.37 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 90.0 MB in the beginning and 179.9 MB in the end (delta: -89.9 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-10-13 19:52:51,344 INFO L168 Benchmark]: RCFGBuilder took 305.20 ms. Allocated memory is still 202.4 MB. Free memory was 179.9 MB in the beginning and 165.4 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2019-10-13 19:52:51,345 INFO L168 Benchmark]: TraceAbstraction took 1683.95 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 164.8 MB in the beginning and 192.1 MB in the end (delta: -27.3 MB). Peak memory consumption was 5.2 MB. Max. memory is 7.1 GB. [2019-10-13 19:52:51,348 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 144.7 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 337.77 ms. Allocated memory is still 144.7 MB. Free memory was 100.5 MB in the beginning and 90.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 138.37 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 90.0 MB in the beginning and 179.9 MB in the end (delta: -89.9 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 305.20 ms. Allocated memory is still 202.4 MB. Free memory was 179.9 MB in the beginning and 165.4 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1683.95 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 164.8 MB in the beginning and 192.1 MB in the end (delta: -27.3 MB). Peak memory consumption was 5.2 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: 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, 28 locations, 1 error locations. Result: SAFE, OverallTime: 1.5s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 90 SDtfs, 23 SDslu, 71 SDs, 0 SdLazy, 45 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, 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, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 13 PreInvPairs, 14 NumberOfFragments, 79 HoareAnnotationTreeSize, 13 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 129 ConstructedInterpolants, 0 QuantifiedInterpolants, 4027 SizeOfPredicates, 3 NumberOfNonLiveVariables, 86 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 9/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 126, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9523809523809523, AVG_VARS_REMOVED_DURING_WEAKENING: 0.8571428571428571, AVG_WEAKENED_CONJUNCTS: 0.7619047619047619, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...