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-multidimensional/init-4-n-u.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:53:40,682 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:53:40,685 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:53:40,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:53:40,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:53:40,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:53:40,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:53:40,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:53:40,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:53:40,704 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:53:40,705 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:53:40,707 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:53:40,707 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:53:40,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:53:40,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:53:40,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:53:40,713 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:53:40,714 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:53:40,716 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:53:40,721 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:53:40,722 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:53:40,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:53:40,729 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:53:40,732 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:53:40,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 19:53:40,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:53:40,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:53:40,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:53:40,754 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 19:53:40,774 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:53:40,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:53:40,776 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:53:40,776 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:53:40,776 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:53:40,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:53:40,777 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:53:40,777 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:53:40,777 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:53:40,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:53:40,778 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:53:40,779 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:53:40,779 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:53:40,779 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:53:40,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:53:40,780 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:53:40,780 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:53:40,780 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:53:40,780 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:53:40,781 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:53:40,781 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:53:40,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:53:40,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:53:40,782 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:53:40,782 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:53:40,782 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:53:40,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:53:40,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:53:40,783 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 19:53:41,075 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:53:41,093 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:53:41,096 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:53:41,098 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:53:41,098 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:53:41,099 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-multidimensional/init-4-n-u.c [2019-10-13 19:53:41,170 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca4c07a04/32c3288264dc438f89fe7f336e288c6e/FLAG49ec12afc [2019-10-13 19:53:41,636 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:53:41,638 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/init-4-n-u.c [2019-10-13 19:53:41,646 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca4c07a04/32c3288264dc438f89fe7f336e288c6e/FLAG49ec12afc [2019-10-13 19:53:42,020 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca4c07a04/32c3288264dc438f89fe7f336e288c6e [2019-10-13 19:53:42,031 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:53:42,033 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:53:42,036 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:53:42,037 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:53:42,040 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:53:42,041 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:42" (1/1) ... [2019-10-13 19:53:42,044 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bfc0887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:42, skipping insertion in model container [2019-10-13 19:53:42,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:42" (1/1) ... [2019-10-13 19:53:42,052 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:53:42,080 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:53:42,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:53:42,257 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:53:42,283 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:53:42,386 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:53:42,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:42 WrapperNode [2019-10-13 19:53:42,387 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:53:42,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:53:42,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:53:42,388 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:53:42,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:42" (1/1) ... [2019-10-13 19:53:42,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:42" (1/1) ... [2019-10-13 19:53:42,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:42" (1/1) ... [2019-10-13 19:53:42,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:42" (1/1) ... [2019-10-13 19:53:42,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:42" (1/1) ... [2019-10-13 19:53:42,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:42" (1/1) ... [2019-10-13 19:53:42,438 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:42" (1/1) ... [2019-10-13 19:53:42,441 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:53:42,441 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:53:42,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:53:42,442 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:53:42,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:42" (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 19:53:42,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:53:42,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:53:42,500 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 19:53:42,500 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:53:42,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:53:42,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 19:53:42,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:53:42,501 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:53:42,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:53:42,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:53:42,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:53:42,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:53:42,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:53:42,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:53:42,814 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:53:42,814 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-10-13 19:53:42,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:42 BoogieIcfgContainer [2019-10-13 19:53:42,816 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:53:42,817 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:53:42,817 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:53:42,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:53:42,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:53:42" (1/3) ... [2019-10-13 19:53:42,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dbca9ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:42, skipping insertion in model container [2019-10-13 19:53:42,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:42" (2/3) ... [2019-10-13 19:53:42,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dbca9ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:42, skipping insertion in model container [2019-10-13 19:53:42,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:42" (3/3) ... [2019-10-13 19:53:42,833 INFO L109 eAbstractionObserver]: Analyzing ICFG init-4-n-u.c [2019-10-13 19:53:42,843 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:53:42,853 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:53:42,867 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:53:42,896 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:53:42,896 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:53:42,896 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:53:42,896 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:53:42,897 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:53:42,897 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:53:42,897 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:53:42,897 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:53:42,914 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2019-10-13 19:53:42,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-13 19:53:42,920 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:42,920 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:42,923 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:42,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:42,927 INFO L82 PathProgramCache]: Analyzing trace with hash -129587761, now seen corresponding path program 1 times [2019-10-13 19:53:42,935 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:42,935 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233026281] [2019-10-13 19:53:42,936 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:42,936 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:42,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:43,018 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 19:53:43,019 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [616706772] [2019-10-13 19:53:43,019 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 19:53:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:43,081 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-13 19:53:43,086 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:53:43,103 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 19:53:43,103 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 19:53:43,124 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 19:53:43,125 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233026281] [2019-10-13 19:53:43,125 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 19:53:43,125 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616706772] [2019-10-13 19:53:43,126 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:43,126 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-13 19:53:43,127 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482395605] [2019-10-13 19:53:43,131 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:53:43,132 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:43,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:53:43,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:43,150 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2019-10-13 19:53:43,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:43,177 INFO L93 Difference]: Finished difference Result 62 states and 95 transitions. [2019-10-13 19:53:43,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:53:43,180 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-13 19:53:43,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:43,188 INFO L225 Difference]: With dead ends: 62 [2019-10-13 19:53:43,189 INFO L226 Difference]: Without dead ends: 29 [2019-10-13 19:53:43,192 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 31 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 19:53:43,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-13 19:53:43,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-10-13 19:53:43,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-13 19:53:43,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2019-10-13 19:53:43,239 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 16 [2019-10-13 19:53:43,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:43,239 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2019-10-13 19:53:43,239 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:53:43,240 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2019-10-13 19:53:43,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-13 19:53:43,241 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:43,241 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:43,445 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:43,445 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:43,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:43,446 INFO L82 PathProgramCache]: Analyzing trace with hash -269441638, now seen corresponding path program 1 times [2019-10-13 19:53:43,446 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:43,447 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832253572] [2019-10-13 19:53:43,447 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:43,447 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:43,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:43,469 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 19:53:43,470 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1472841556] [2019-10-13 19:53:43,470 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:43,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:43,516 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:53:43,518 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:53:43,561 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 19:53:43,561 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 19:53:43,584 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 19:53:43,584 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832253572] [2019-10-13 19:53:43,585 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 19:53:43,585 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472841556] [2019-10-13 19:53:43,586 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:43,587 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-10-13 19:53:43,587 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600495341] [2019-10-13 19:53:43,589 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:53:43,589 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:43,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:53:43,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:53:43,590 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand 4 states. [2019-10-13 19:53:43,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:43,661 INFO L93 Difference]: Finished difference Result 53 states and 68 transitions. [2019-10-13 19:53:43,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:53:43,663 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2019-10-13 19:53:43,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:43,664 INFO L225 Difference]: With dead ends: 53 [2019-10-13 19:53:43,664 INFO L226 Difference]: Without dead ends: 37 [2019-10-13 19:53:43,667 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 29 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 19:53:43,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-10-13 19:53:43,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-10-13 19:53:43,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-13 19:53:43,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2019-10-13 19:53:43,683 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 16 [2019-10-13 19:53:43,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:43,683 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2019-10-13 19:53:43,684 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:53:43,684 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2019-10-13 19:53:43,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-13 19:53:43,686 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:43,686 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:43,890 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:43,890 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:43,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:43,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1690643674, now seen corresponding path program 1 times [2019-10-13 19:53:43,891 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:43,891 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050071771] [2019-10-13 19:53:43,892 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:43,892 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:43,892 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:43,900 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 19:53:43,901 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [128698959] [2019-10-13 19:53:43,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:43,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:43,949 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:53:43,951 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:53:43,972 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 19:53:43,973 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 19:53:44,001 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 19:53:44,002 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050071771] [2019-10-13 19:53:44,002 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 19:53:44,005 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128698959] [2019-10-13 19:53:44,005 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:44,006 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-13 19:53:44,006 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166822992] [2019-10-13 19:53:44,007 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:53:44,007 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:44,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:53:44,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:53:44,008 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand 6 states. [2019-10-13 19:53:44,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:44,135 INFO L93 Difference]: Finished difference Result 83 states and 113 transitions. [2019-10-13 19:53:44,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:53:44,135 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2019-10-13 19:53:44,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:44,138 INFO L225 Difference]: With dead ends: 83 [2019-10-13 19:53:44,139 INFO L226 Difference]: Without dead ends: 58 [2019-10-13 19:53:44,142 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:53:44,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-10-13 19:53:44,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2019-10-13 19:53:44,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-10-13 19:53:44,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2019-10-13 19:53:44,178 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 74 transitions. Word has length 22 [2019-10-13 19:53:44,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:44,179 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 74 transitions. [2019-10-13 19:53:44,179 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:53:44,179 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 74 transitions. [2019-10-13 19:53:44,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-10-13 19:53:44,181 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:44,182 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:44,386 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:44,386 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:44,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:44,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1333640026, now seen corresponding path program 1 times [2019-10-13 19:53:44,387 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:44,388 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407718568] [2019-10-13 19:53:44,403 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:44,403 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:44,403 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:44,428 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 19:53:44,429 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [17282683] [2019-10-13 19:53:44,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:44,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:44,490 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:53:44,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:53:44,514 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 19:53:44,514 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 19:53:44,542 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 19:53:44,543 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407718568] [2019-10-13 19:53:44,543 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 19:53:44,543 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17282683] [2019-10-13 19:53:44,544 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:44,544 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-13 19:53:44,544 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188472655] [2019-10-13 19:53:44,544 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:53:44,545 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:44,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:53:44,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:53:44,545 INFO L87 Difference]: Start difference. First operand 57 states and 74 transitions. Second operand 6 states. [2019-10-13 19:53:44,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:44,639 INFO L93 Difference]: Finished difference Result 132 states and 184 transitions. [2019-10-13 19:53:44,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:53:44,640 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2019-10-13 19:53:44,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:44,641 INFO L225 Difference]: With dead ends: 132 [2019-10-13 19:53:44,641 INFO L226 Difference]: Without dead ends: 86 [2019-10-13 19:53:44,642 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:53:44,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2019-10-13 19:53:44,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2019-10-13 19:53:44,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2019-10-13 19:53:44,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 110 transitions. [2019-10-13 19:53:44,658 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 110 transitions. Word has length 34 [2019-10-13 19:53:44,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:44,658 INFO L462 AbstractCegarLoop]: Abstraction has 85 states and 110 transitions. [2019-10-13 19:53:44,658 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:53:44,658 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 110 transitions. [2019-10-13 19:53:44,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-10-13 19:53:44,660 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:44,660 INFO L380 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:44,872 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:44,872 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:44,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:44,873 INFO L82 PathProgramCache]: Analyzing trace with hash -423896998, now seen corresponding path program 1 times [2019-10-13 19:53:44,874 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:44,874 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345075594] [2019-10-13 19:53:44,874 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:44,875 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:44,875 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:44,895 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 19:53:44,895 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [62568273] [2019-10-13 19:53:44,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:44,967 INFO L256 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:53:44,972 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:53:44,992 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2019-10-13 19:53:44,993 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 19:53:45,022 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2019-10-13 19:53:45,022 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345075594] [2019-10-13 19:53:45,022 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 19:53:45,022 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62568273] [2019-10-13 19:53:45,023 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:45,023 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-13 19:53:45,024 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618397387] [2019-10-13 19:53:45,025 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:53:45,026 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:45,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:53:45,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:53:45,027 INFO L87 Difference]: Start difference. First operand 85 states and 110 transitions. Second operand 6 states. [2019-10-13 19:53:45,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:45,117 INFO L93 Difference]: Finished difference Result 193 states and 270 transitions. [2019-10-13 19:53:45,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:53:45,118 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2019-10-13 19:53:45,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:45,119 INFO L225 Difference]: With dead ends: 193 [2019-10-13 19:53:45,120 INFO L226 Difference]: Without dead ends: 118 [2019-10-13 19:53:45,121 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:53:45,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2019-10-13 19:53:45,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2019-10-13 19:53:45,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2019-10-13 19:53:45,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 146 transitions. [2019-10-13 19:53:45,140 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 146 transitions. Word has length 58 [2019-10-13 19:53:45,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:45,140 INFO L462 AbstractCegarLoop]: Abstraction has 117 states and 146 transitions. [2019-10-13 19:53:45,140 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:53:45,141 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 146 transitions. [2019-10-13 19:53:45,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-10-13 19:53:45,143 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:45,143 INFO L380 BasicCegarLoop]: trace histogram [16, 8, 8, 8, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:45,348 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:45,349 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:45,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:45,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1979618906, now seen corresponding path program 1 times [2019-10-13 19:53:45,349 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:45,350 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959625976] [2019-10-13 19:53:45,350 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:45,350 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:45,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:45,362 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 19:53:45,362 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1594795401] [2019-10-13 19:53:45,362 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:45,448 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-13 19:53:45,451 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:53:45,501 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 81 proven. 3 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2019-10-13 19:53:45,501 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 19:53:45,553 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 81 proven. 3 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2019-10-13 19:53:45,554 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959625976] [2019-10-13 19:53:45,554 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 19:53:45,554 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594795401] [2019-10-13 19:53:45,555 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [150570305] [2019-10-13 19:53:45,576 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 75 [2019-10-13 19:53:45,631 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-13 19:53:45,632 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-13 19:53:45,708 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-13 19:53:45,710 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 19 root evaluator evaluations with a maximum evaluation depth of 0. Performed 19 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 25 variables. [2019-10-13 19:53:45,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:45,715 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-13 19:53:45,789 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-13 19:53:45,789 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-13 19:53:45,793 INFO L553 sIntCurrentIteration]: We unified 73 AI predicates to 73 [2019-10-13 19:53:45,793 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-13 19:53:45,794 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:53:45,794 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6, 6] total 10 [2019-10-13 19:53:45,794 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19763586] [2019-10-13 19:53:45,795 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:53:45,796 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:45,796 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-13 19:53:45,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:53:45,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:45,798 INFO L87 Difference]: Start difference. First operand 117 states and 146 transitions. Second operand 2 states. [2019-10-13 19:53:45,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:45,803 INFO L93 Difference]: Finished difference Result 117 states and 146 transitions. [2019-10-13 19:53:45,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:53:45,803 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 74 [2019-10-13 19:53:45,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:45,803 INFO L225 Difference]: With dead ends: 117 [2019-10-13 19:53:45,804 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 19:53:45,807 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 73 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 19:53:45,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 19:53:45,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 19:53:45,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 19:53:45,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 19:53:45,809 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 74 [2019-10-13 19:53:45,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:45,810 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 19:53:45,810 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:53:45,810 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 19:53:45,811 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 19:53:46,011 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:46,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 19:53:46,071 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:53:46,072 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:53:46,072 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:53:46,072 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:53:46,072 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-13 19:53:46,072 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:53:46,072 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:53:46,073 INFO L439 ceAbstractionStarter]: At program point L60(line 60) the Hoare annotation is: false [2019-10-13 19:53:46,073 INFO L443 ceAbstractionStarter]: For program point L60-1(line 60) no Hoare annotation was computed. [2019-10-13 19:53:46,073 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 11 72) no Hoare annotation was computed. [2019-10-13 19:53:46,073 INFO L439 ceAbstractionStarter]: At program point L32-2(lines 32 39) the Hoare annotation is: false [2019-10-13 19:53:46,073 INFO L443 ceAbstractionStarter]: For program point L32-3(lines 32 39) no Hoare annotation was computed. [2019-10-13 19:53:46,073 INFO L439 ceAbstractionStarter]: At program point L57-2(lines 57 64) the Hoare annotation is: false [2019-10-13 19:53:46,073 INFO L443 ceAbstractionStarter]: For program point L57-3(lines 57 64) no Hoare annotation was computed. [2019-10-13 19:53:46,074 INFO L439 ceAbstractionStarter]: At program point L29-2(lines 29 41) the Hoare annotation is: false [2019-10-13 19:53:46,074 INFO L443 ceAbstractionStarter]: For program point L29-3(lines 29 41) no Hoare annotation was computed. [2019-10-13 19:53:46,074 INFO L439 ceAbstractionStarter]: At program point L25-2(lines 25 43) the Hoare annotation is: false [2019-10-13 19:53:46,074 INFO L443 ceAbstractionStarter]: For program point L25-3(lines 25 43) no Hoare annotation was computed. [2019-10-13 19:53:46,075 INFO L439 ceAbstractionStarter]: At program point L54-2(lines 54 66) the Hoare annotation is: false [2019-10-13 19:53:46,075 INFO L443 ceAbstractionStarter]: For program point L54-3(lines 54 66) no Hoare annotation was computed. [2019-10-13 19:53:46,075 INFO L439 ceAbstractionStarter]: At program point L50-2(lines 50 68) the Hoare annotation is: false [2019-10-13 19:53:46,075 INFO L443 ceAbstractionStarter]: For program point L50-3(lines 50 68) no Hoare annotation was computed. [2019-10-13 19:53:46,075 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 11 72) no Hoare annotation was computed. [2019-10-13 19:53:46,075 INFO L439 ceAbstractionStarter]: At program point L34-2(lines 34 37) the Hoare annotation is: false [2019-10-13 19:53:46,075 INFO L443 ceAbstractionStarter]: For program point L34-3(lines 34 37) no Hoare annotation was computed. [2019-10-13 19:53:46,076 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 11 72) the Hoare annotation is: true [2019-10-13 19:53:46,079 INFO L439 ceAbstractionStarter]: At program point L59-2(lines 59 62) the Hoare annotation is: false [2019-10-13 19:53:46,079 INFO L443 ceAbstractionStarter]: For program point L59-3(lines 59 62) no Hoare annotation was computed. [2019-10-13 19:53:46,079 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-13 19:53:46,079 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-10-13 19:53:46,079 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-10-13 19:53:46,079 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-13 19:53:46,080 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-13 19:53:46,080 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-10-13 19:53:46,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:53:46 BoogieIcfgContainer [2019-10-13 19:53:46,094 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 19:53:46,105 INFO L168 Benchmark]: Toolchain (without parser) took 4063.74 ms. Allocated memory was 138.9 MB in the beginning and 244.8 MB in the end (delta: 105.9 MB). Free memory was 102.1 MB in the beginning and 210.4 MB in the end (delta: -108.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-10-13 19:53:46,108 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 19:53:46,109 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.91 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 101.9 MB in the beginning and 182.6 MB in the end (delta: -80.7 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:46,110 INFO L168 Benchmark]: Boogie Preprocessor took 53.38 ms. Allocated memory is still 203.4 MB. Free memory was 182.6 MB in the beginning and 180.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:46,112 INFO L168 Benchmark]: RCFGBuilder took 374.46 ms. Allocated memory is still 203.4 MB. Free memory was 180.3 MB in the beginning and 163.4 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:46,116 INFO L168 Benchmark]: TraceAbstraction took 3277.49 ms. Allocated memory was 203.4 MB in the beginning and 244.8 MB in the end (delta: 41.4 MB). Free memory was 163.4 MB in the beginning and 210.4 MB in the end (delta: -47.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-10-13 19:53:46,123 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 350.91 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 101.9 MB in the beginning and 182.6 MB in the end (delta: -80.7 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 53.38 ms. Allocated memory is still 203.4 MB. Free memory was 182.6 MB in the beginning and 180.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 374.46 ms. Allocated memory is still 203.4 MB. Free memory was 180.3 MB in the beginning and 163.4 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3277.49 ms. Allocated memory was 203.4 MB in the beginning and 244.8 MB in the end (delta: 41.4 MB). Free memory was 163.4 MB in the beginning and 210.4 MB in the end (delta: -47.1 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 29]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 34 locations, 1 error locations. Result: SAFE, OverallTime: 3.1s, OverallIterations: 6, TraceHistogramMax: 16, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 167 SDtfs, 173 SDslu, 183 SDs, 0 SdLazy, 70 SolverSat, 73 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 363 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=117occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 30 PreInvPairs, 30 NumberOfFragments, 14 HoareAnnotationTreeSize, 30 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 14 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 220 NumberOfCodeBlocks, 220 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 428 ConstructedInterpolants, 0 QuantifiedInterpolants, 26076 SizeOfPredicates, 10 NumberOfNonLiveVariables, 882 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 12 InterpolantComputations, 10 PerfectInterpolantSequences, 1150/1156 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 140, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9623287671232876, AVG_VARS_REMOVED_DURING_WEAKENING: 0.6575342465753424, AVG_WEAKENED_CONJUNCTS: 0.0821917808219178, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...