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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/float-benchs/zonotope_3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 01:40:03,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 01:40:03,787 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 01:40:03,798 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 01:40:03,799 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 01:40:03,800 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 01:40:03,801 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 01:40:03,803 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 01:40:03,805 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 01:40:03,805 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 01:40:03,806 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 01:40:03,807 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-10 01:40:03,808 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 01:40:03,809 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 01:40:03,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 01:40:03,811 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 01:40:03,811 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 01:40:03,812 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 01:40:03,814 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 01:40:03,816 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 01:40:03,817 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 01:40:03,818 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 01:40:03,819 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 01:40:03,820 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 01:40:03,822 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-10 01:40:03,825 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 01:40:03,826 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 01:40:03,827 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 01:40:03,827 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 01:40:03,828 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 01:40:03,828 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 01:40:03,829 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 01:40:03,829 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 01:40:03,830 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 01:40:03,830 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 01:40:03,831 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 01:40:03,832 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-10 01:40:03,846 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 01:40:03,846 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 01:40:03,847 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 01:40:03,847 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 01:40:03,848 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 01:40:03,848 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 01:40:03,848 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 01:40:03,848 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 01:40:03,848 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 01:40:03,849 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 01:40:03,849 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 01:40:03,849 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 01:40:03,850 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 01:40:03,850 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 01:40:03,850 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 01:40:03,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 01:40:03,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 01:40:03,851 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 01:40:03,851 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 01:40:03,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 01:40:03,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 01:40:03,851 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 01:40:03,852 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 01:40:03,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:40:03,852 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 01:40:03,852 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 01:40:03,852 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 01:40:03,853 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 01:40:03,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 01:40:03,853 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 01:40:03,880 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 01:40:03,892 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 01:40:03,896 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 01:40:03,897 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 01:40:03,897 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 01:40:03,898 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/zonotope_3.c [2019-09-10 01:40:03,954 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af57decb9/09f3e92693414e50b5874f48dc70ddf1/FLAG98d3214a7 [2019-09-10 01:40:04,371 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 01:40:04,371 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/zonotope_3.c [2019-09-10 01:40:04,378 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af57decb9/09f3e92693414e50b5874f48dc70ddf1/FLAG98d3214a7 [2019-09-10 01:40:04,771 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af57decb9/09f3e92693414e50b5874f48dc70ddf1 [2019-09-10 01:40:04,782 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 01:40:04,783 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 01:40:04,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 01:40:04,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 01:40:04,788 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 01:40:04,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:40:04" (1/1) ... [2019-09-10 01:40:04,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@163020e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:40:04, skipping insertion in model container [2019-09-10 01:40:04,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:40:04" (1/1) ... [2019-09-10 01:40:04,801 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 01:40:04,819 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 01:40:05,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:40:05,021 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 01:40:05,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:40:05,052 INFO L192 MainTranslator]: Completed translation [2019-09-10 01:40:05,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:40:05 WrapperNode [2019-09-10 01:40:05,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 01:40:05,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 01:40:05,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 01:40:05,053 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 01:40:05,143 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:40:05" (1/1) ... [2019-09-10 01:40:05,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:40:05" (1/1) ... [2019-09-10 01:40:05,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:40:05" (1/1) ... [2019-09-10 01:40:05,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:40:05" (1/1) ... [2019-09-10 01:40:05,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:40:05" (1/1) ... [2019-09-10 01:40:05,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:40:05" (1/1) ... [2019-09-10 01:40:05,161 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:40:05" (1/1) ... [2019-09-10 01:40:05,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 01:40:05,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 01:40:05,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 01:40:05,164 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 01:40:05,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:40:05" (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 [2019-09-10 01:40:05,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 01:40:05,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 01:40:05,228 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-10 01:40:05,228 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-09-10 01:40:05,228 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2019-09-10 01:40:05,228 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 01:40:05,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 01:40:05,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2019-09-10 01:40:05,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-10 01:40:05,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-10 01:40:05,229 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-09-10 01:40:05,229 INFO L130 BoogieDeclarations]: Found specification of procedure g [2019-09-10 01:40:05,229 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 01:40:05,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 01:40:05,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 01:40:05,474 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 01:40:05,475 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-10 01:40:05,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:40:05 BoogieIcfgContainer [2019-09-10 01:40:05,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 01:40:05,483 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 01:40:05,483 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 01:40:05,495 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 01:40:05,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 01:40:04" (1/3) ... [2019-09-10 01:40:05,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4577a272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:40:05, skipping insertion in model container [2019-09-10 01:40:05,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:40:05" (2/3) ... [2019-09-10 01:40:05,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4577a272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:40:05, skipping insertion in model container [2019-09-10 01:40:05,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:40:05" (3/3) ... [2019-09-10 01:40:05,498 INFO L109 eAbstractionObserver]: Analyzing ICFG zonotope_3.c [2019-09-10 01:40:05,508 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 01:40:05,519 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 01:40:05,536 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 01:40:05,560 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 01:40:05,560 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 01:40:05,560 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 01:40:05,560 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 01:40:05,561 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 01:40:05,561 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 01:40:05,561 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 01:40:05,561 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 01:40:05,575 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2019-09-10 01:40:05,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-09-10 01:40:05,584 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:40:05,585 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:40:05,587 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:40:05,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:40:05,593 INFO L82 PathProgramCache]: Analyzing trace with hash 621359716, now seen corresponding path program 1 times [2019-09-10 01:40:05,596 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:40:05,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:40:05,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:40:05,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:40:05,639 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:40:05,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:40:05,729 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-10 01:40:05,731 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:40:05,732 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 01:40:05,732 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:40:05,736 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 01:40:05,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 01:40:05,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:40:05,749 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2019-09-10 01:40:05,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:40:05,768 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2019-09-10 01:40:05,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 01:40:05,770 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 31 [2019-09-10 01:40:05,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:40:05,784 INFO L225 Difference]: With dead ends: 42 [2019-09-10 01:40:05,784 INFO L226 Difference]: Without dead ends: 35 [2019-09-10 01:40:05,788 INFO L628 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 [2019-09-10 01:40:05,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-09-10 01:40:05,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-09-10 01:40:05,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-09-10 01:40:05,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2019-09-10 01:40:05,856 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 31 [2019-09-10 01:40:05,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:40:05,859 INFO L475 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2019-09-10 01:40:05,860 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 01:40:05,860 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2019-09-10 01:40:05,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-09-10 01:40:05,862 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:40:05,863 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:40:05,863 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:40:05,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:40:05,864 INFO L82 PathProgramCache]: Analyzing trace with hash 220551602, now seen corresponding path program 1 times [2019-09-10 01:40:05,864 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:40:05,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:40:05,869 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:40:05,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:40:05,870 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:40:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:40:06,004 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-10 01:40:06,005 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:40:06,005 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 01:40:06,005 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:40:06,007 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 01:40:06,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 01:40:06,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 01:40:06,009 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 3 states. [2019-09-10 01:40:06,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:40:06,050 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2019-09-10 01:40:06,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 01:40:06,051 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2019-09-10 01:40:06,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:40:06,052 INFO L225 Difference]: With dead ends: 45 [2019-09-10 01:40:06,052 INFO L226 Difference]: Without dead ends: 45 [2019-09-10 01:40:06,053 INFO L628 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 [2019-09-10 01:40:06,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-09-10 01:40:06,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 36. [2019-09-10 01:40:06,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-09-10 01:40:06,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2019-09-10 01:40:06,074 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 31 [2019-09-10 01:40:06,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:40:06,075 INFO L475 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2019-09-10 01:40:06,075 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 01:40:06,075 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2019-09-10 01:40:06,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-09-10 01:40:06,080 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:40:06,080 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2019-09-10 01:40:06,080 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:40:06,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:40:06,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1378567160, now seen corresponding path program 1 times [2019-09-10 01:40:06,081 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:40:06,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:40:06,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:40:06,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:40:06,086 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:40:06,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:40:06,214 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-09-10 01:40:06,214 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 01:40:06,215 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 01:40:06,216 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 54 with the following transitions: [2019-09-10 01:40:06,218 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [3], [4], [8], [10], [12], [14], [16], [22], [24], [26], [28], [30], [32], [34], [38], [42], [45], [47], [53], [54], [55], [57], [58], [59], [60], [61], [62], [63], [64], [65], [66], [67], [68], [69], [70], [71], [72], [73] [2019-09-10 01:40:06,254 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 01:40:06,254 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 01:40:06,340 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator COMPLT has no precise implementation. [2019-09-10 01:40:06,342 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator COMPGT has no precise implementation. [2019-09-10 01:40:06,605 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 01:40:06,609 INFO L272 AbstractInterpreter]: Visited 41 different actions 193 times. Merged at 10 different actions 61 times. Widened at 1 different actions 3 times. Performed 284 root evaluator evaluations with a maximum evaluation depth of 7. Performed 284 inverse root evaluator evaluations with a maximum inverse evaluation depth of 7. Found 1 fixpoints after 1 different actions. Largest state had 17 variables. [2019-09-10 01:40:06,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:40:06,617 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 01:40:06,617 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 01:40:06,618 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 01:40:06,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:40:06,632 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 01:40:06,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:40:06,683 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-10 01:40:06,691 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 01:40:06,722 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-09-10 01:40:06,723 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 01:40:06,818 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-09-10 01:40:06,822 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 01:40:06,823 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2019-09-10 01:40:06,823 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 01:40:06,824 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-10 01:40:06,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-10 01:40:06,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-09-10 01:40:06,825 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 4 states. [2019-09-10 01:40:06,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:40:06,883 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2019-09-10 01:40:06,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-10 01:40:06,884 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2019-09-10 01:40:06,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:40:06,886 INFO L225 Difference]: With dead ends: 55 [2019-09-10 01:40:06,886 INFO L226 Difference]: Without dead ends: 55 [2019-09-10 01:40:06,886 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-09-10 01:40:06,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-09-10 01:40:06,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 46. [2019-09-10 01:40:06,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-09-10 01:40:06,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2019-09-10 01:40:06,896 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 53 [2019-09-10 01:40:06,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:40:06,896 INFO L475 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2019-09-10 01:40:06,897 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-10 01:40:06,897 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2019-09-10 01:40:06,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-09-10 01:40:06,899 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:40:06,899 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:40:06,900 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:40:06,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:40:06,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1964348862, now seen corresponding path program 2 times [2019-09-10 01:40:06,900 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:40:06,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:40:06,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:40:06,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:40:06,902 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:40:06,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:40:06,989 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2019-09-10 01:40:06,989 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 01:40:06,990 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 01:40:06,990 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-09-10 01:40:06,990 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 01:40:06,991 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 01:40:06,991 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-10 01:40:07,005 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-10 01:40:07,005 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 01:40:07,040 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-09-10 01:40:07,041 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-10 01:40:07,042 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 29 conjunts are in the unsatisfiable core [2019-09-10 01:40:07,047 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 01:40:07,351 WARN L188 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2019-09-10 01:40:07,703 WARN L188 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2019-09-10 01:40:08,115 WARN L188 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2019-09-10 01:40:08,455 WARN L188 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2019-09-10 01:40:08,802 WARN L188 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2019-09-10 01:40:08,931 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 27 proven. 4 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-09-10 01:40:08,932 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 01:40:09,143 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 01:40:09,318 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 26 proven. 4 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-09-10 01:40:09,333 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 01:40:09,334 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 12, 11] total 23 [2019-09-10 01:40:09,334 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 01:40:09,337 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-10 01:40:09,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-10 01:40:09,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2019-09-10 01:40:09,339 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand 15 states. [2019-09-10 01:40:09,779 WARN L188 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2019-09-10 01:40:10,190 WARN L188 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2019-09-10 01:40:10,655 WARN L188 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2019-09-10 01:40:11,342 WARN L188 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 24 [2019-09-10 01:40:12,047 WARN L188 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 24 [2019-09-10 01:40:12,733 WARN L188 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 24 [2019-09-10 01:40:13,389 WARN L188 SmtUtils]: Spent 621.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2019-09-10 01:40:14,093 WARN L188 SmtUtils]: Spent 657.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2019-09-10 01:40:14,433 WARN L188 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2019-09-10 01:40:15,107 WARN L188 SmtUtils]: Spent 641.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 24 [2019-09-10 01:40:15,818 WARN L188 SmtUtils]: Spent 643.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 24 [2019-09-10 01:40:16,461 WARN L188 SmtUtils]: Spent 610.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2019-09-10 01:40:17,150 WARN L188 SmtUtils]: Spent 640.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2019-09-10 01:40:17,486 WARN L188 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2019-09-10 01:40:18,145 WARN L188 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 24 [2019-09-10 01:40:18,839 WARN L188 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 22 [2019-09-10 01:40:19,491 WARN L188 SmtUtils]: Spent 616.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2019-09-10 01:40:20,144 WARN L188 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2019-09-10 01:40:20,848 WARN L188 SmtUtils]: Spent 644.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2019-09-10 01:40:21,502 WARN L188 SmtUtils]: Spent 618.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 22 [2019-09-10 01:40:21,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:40:21,536 INFO L93 Difference]: Finished difference Result 63 states and 81 transitions. [2019-09-10 01:40:21,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-09-10 01:40:21,539 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 75 [2019-09-10 01:40:21,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:40:21,540 INFO L225 Difference]: With dead ends: 63 [2019-09-10 01:40:21,540 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 01:40:21,541 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=270, Invalid=1622, Unknown=0, NotChecked=0, Total=1892 [2019-09-10 01:40:21,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 01:40:21,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 01:40:21,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 01:40:21,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 01:40:21,542 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 75 [2019-09-10 01:40:21,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:40:21,543 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 01:40:21,543 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-10 01:40:21,543 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 01:40:21,544 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 01:40:21,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 01:40:21 BoogieIcfgContainer [2019-09-10 01:40:21,548 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 01:40:21,550 INFO L168 Benchmark]: Toolchain (without parser) took 16766.71 ms. Allocated memory was 136.3 MB in the beginning and 251.1 MB in the end (delta: 114.8 MB). Free memory was 92.6 MB in the beginning and 207.8 MB in the end (delta: -115.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-10 01:40:21,551 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 136.3 MB. Free memory was 110.9 MB in the beginning and 110.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 01:40:21,551 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.18 ms. Allocated memory is still 136.3 MB. Free memory was 92.4 MB in the beginning and 82.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-09-10 01:40:21,553 INFO L168 Benchmark]: Boogie Preprocessor took 110.52 ms. Allocated memory was 136.3 MB in the beginning and 200.8 MB in the end (delta: 64.5 MB). Free memory was 82.8 MB in the beginning and 177.4 MB in the end (delta: -94.6 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. [2019-09-10 01:40:21,553 INFO L168 Benchmark]: RCFGBuilder took 318.26 ms. Allocated memory is still 200.8 MB. Free memory was 177.4 MB in the beginning and 163.0 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2019-09-10 01:40:21,554 INFO L168 Benchmark]: TraceAbstraction took 16065.48 ms. Allocated memory was 200.8 MB in the beginning and 251.1 MB in the end (delta: 50.3 MB). Free memory was 163.0 MB in the beginning and 207.8 MB in the end (delta: -44.8 MB). Peak memory consumption was 5.6 MB. Max. memory is 7.1 GB. [2019-09-10 01:40:21,558 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 136.3 MB. Free memory was 110.9 MB in the beginning and 110.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 268.18 ms. Allocated memory is still 136.3 MB. Free memory was 92.4 MB in the beginning and 82.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.52 ms. Allocated memory was 136.3 MB in the beginning and 200.8 MB in the end (delta: 64.5 MB). Free memory was 82.8 MB in the beginning and 177.4 MB in the end (delta: -94.6 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 318.26 ms. Allocated memory is still 200.8 MB. Free memory was 177.4 MB in the beginning and 163.0 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16065.48 ms. Allocated memory was 200.8 MB in the beginning and 251.1 MB in the end (delta: 50.3 MB). Free memory was 163.0 MB in the beginning and 207.8 MB in the end (delta: -44.8 MB). Peak memory consumption was 5.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. SAFE Result, 15.9s OverallTime, 4 OverallIterations, 6 TraceHistogramMax, 12.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 164 SDtfs, 47 SDslu, 361 SDs, 0 SdLazy, 328 SolverSat, 76 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 290 GetRequests, 242 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 13.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.4s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 18 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 318 NumberOfCodeBlocks, 287 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 438 ConstructedInterpolants, 11 QuantifiedInterpolants, 66980 SizeOfPredicates, 9 NumberOfNonLiveVariables, 244 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 406/429 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...