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/reducercommutativity/sep.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:22:23,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:22:23,738 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:22:23,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:22:23,758 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:22:23,760 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:22:23,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:22:23,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:22:23,776 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:22:23,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:22:23,781 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:22:23,783 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:22:23,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:22:23,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:22:23,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:22:23,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:22:23,791 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:22:23,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:22:23,793 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:22:23,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:22:23,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:22:23,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:22:23,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:22:23,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:22:23,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:22:23,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:22:23,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:22:23,818 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:22:23,819 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 [2019-10-15 01:22:23,835 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:22:23,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:22:23,837 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:22:23,837 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:22:23,837 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:22:23,838 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:22:23,838 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:22:23,838 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:22:23,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:22:23,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:22:23,839 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:22:23,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:22:23,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:22:23,839 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:22:23,839 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:22:23,840 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:22:23,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:22:23,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:22:23,840 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:22:23,840 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:22:23,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:22:23,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:22:23,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:22:23,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:22:23,841 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:22:23,842 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:22:23,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:22:23,842 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:22:23,842 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 [2019-10-15 01:22:24,145 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:22:24,162 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:22:24,165 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:22:24,167 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:22:24,168 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:22:24,168 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sep.i [2019-10-15 01:22:24,250 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/658647824/c9983ec60ed3429cb3d9cd0c6f405f17/FLAG5e6a6bd0c [2019-10-15 01:22:24,740 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:22:24,741 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/sep.i [2019-10-15 01:22:24,748 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/658647824/c9983ec60ed3429cb3d9cd0c6f405f17/FLAG5e6a6bd0c [2019-10-15 01:22:25,103 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/658647824/c9983ec60ed3429cb3d9cd0c6f405f17 [2019-10-15 01:22:25,114 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:22:25,115 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:22:25,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:22:25,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:22:25,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:22:25,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:22:25" (1/1) ... [2019-10-15 01:22:25,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71163d5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:22:25, skipping insertion in model container [2019-10-15 01:22:25,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:22:25" (1/1) ... [2019-10-15 01:22:25,134 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:22:25,156 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:22:25,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:22:25,385 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:22:25,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:22:25,426 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:22:25,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:22:25 WrapperNode [2019-10-15 01:22:25,427 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:22:25,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:22:25,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:22:25,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:22:25,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:22:25" (1/1) ... [2019-10-15 01:22:25,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:22:25" (1/1) ... [2019-10-15 01:22:25,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:22:25" (1/1) ... [2019-10-15 01:22:25,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:22:25" (1/1) ... [2019-10-15 01:22:25,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:22:25" (1/1) ... [2019-10-15 01:22:25,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:22:25" (1/1) ... [2019-10-15 01:22:25,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:22:25" (1/1) ... [2019-10-15 01:22:25,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:22:25,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:22:25,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:22:25,558 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:22:25,559 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:22:25" (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 [2019-10-15 01:22:25,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:22:25,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:22:25,612 INFO L138 BoogieDeclarations]: Found implementation of procedure sep [2019-10-15 01:22:25,612 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:22:25,613 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:22:25,613 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:22:25,613 INFO L130 BoogieDeclarations]: Found specification of procedure sep [2019-10-15 01:22:25,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:22:25,618 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:22:25,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:22:25,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:22:25,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:22:25,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:22:25,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:22:25,937 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:22:25,937 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-15 01:22:25,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:22:25 BoogieIcfgContainer [2019-10-15 01:22:25,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:22:25,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:22:25,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:22:25,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:22:25,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:22:25" (1/3) ... [2019-10-15 01:22:25,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@460b5deb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:22:25, skipping insertion in model container [2019-10-15 01:22:25,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:22:25" (2/3) ... [2019-10-15 01:22:25,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@460b5deb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:22:25, skipping insertion in model container [2019-10-15 01:22:25,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:22:25" (3/3) ... [2019-10-15 01:22:25,948 INFO L109 eAbstractionObserver]: Analyzing ICFG sep.i [2019-10-15 01:22:25,955 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:22:25,962 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:22:25,974 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:22:26,000 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:22:26,001 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:22:26,001 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:22:26,001 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:22:26,001 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:22:26,001 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:22:26,001 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:22:26,001 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:22:26,019 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-10-15 01:22:26,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-15 01:22:26,025 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:22:26,026 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:22:26,028 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:22:26,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:22:26,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1691531413, now seen corresponding path program 1 times [2019-10-15 01:22:26,041 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:22:26,041 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915123019] [2019-10-15 01:22:26,042 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:22:26,042 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:22:26,042 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:22:26,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:22:26,321 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-15 01:22:26,322 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915123019] [2019-10-15 01:22:26,323 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696320272] [2019-10-15 01:22:26,323 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 [2019-10-15 01:22:26,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:22:26,406 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:22:26,414 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:22:26,463 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-15 01:22:26,463 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:22:26,549 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-15 01:22:26,550 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:22:26,550 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 8 [2019-10-15 01:22:26,550 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788425162] [2019-10-15 01:22:26,556 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:22:26,558 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:22:26,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:22:26,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:22:26,576 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 4 states. [2019-10-15 01:22:26,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:22:26,681 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2019-10-15 01:22:26,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:22:26,683 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2019-10-15 01:22:26,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:22:26,693 INFO L225 Difference]: With dead ends: 64 [2019-10-15 01:22:26,693 INFO L226 Difference]: Without dead ends: 29 [2019-10-15 01:22:26,698 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 59 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:22:26,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-15 01:22:26,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2019-10-15 01:22:26,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-10-15 01:22:26,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2019-10-15 01:22:26,749 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 32 [2019-10-15 01:22:26,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:22:26,749 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2019-10-15 01:22:26,749 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:22:26,750 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2019-10-15 01:22:26,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-10-15 01:22:26,757 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:22:26,758 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:22:26,962 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:22:26,962 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:22:26,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:22:26,963 INFO L82 PathProgramCache]: Analyzing trace with hash -2111009974, now seen corresponding path program 1 times [2019-10-15 01:22:26,964 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:22:26,964 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114001413] [2019-10-15 01:22:26,964 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:22:26,965 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:22:26,965 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:22:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:22:27,124 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:22:27,124 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114001413] [2019-10-15 01:22:27,125 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:22:27,125 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:22:27,125 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362702925] [2019-10-15 01:22:27,126 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:22:27,127 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:22:27,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:22:27,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:22:27,128 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 4 states. [2019-10-15 01:22:27,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:22:27,182 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2019-10-15 01:22:27,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:22:27,183 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2019-10-15 01:22:27,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:22:27,185 INFO L225 Difference]: With dead ends: 43 [2019-10-15 01:22:27,185 INFO L226 Difference]: Without dead ends: 29 [2019-10-15 01:22:27,187 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:22:27,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-15 01:22:27,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2019-10-15 01:22:27,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-15 01:22:27,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2019-10-15 01:22:27,194 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 41 [2019-10-15 01:22:27,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:22:27,197 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2019-10-15 01:22:27,197 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:22:27,197 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2019-10-15 01:22:27,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-15 01:22:27,199 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:22:27,199 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:22:27,199 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:22:27,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:22:27,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1738733132, now seen corresponding path program 1 times [2019-10-15 01:22:27,200 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:22:27,201 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462718378] [2019-10-15 01:22:27,201 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:22:27,201 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:22:27,201 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:22:27,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:22:27,340 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-15 01:22:27,341 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462718378] [2019-10-15 01:22:27,341 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213243008] [2019-10-15 01:22:27,341 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 [2019-10-15 01:22:27,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:22:27,433 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:22:27,436 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:22:27,472 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:22:27,472 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:22:27,570 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-15 01:22:27,571 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1927839893] [2019-10-15 01:22:27,578 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 44 [2019-10-15 01:22:27,626 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-15 01:22:27,626 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-15 01:22:27,714 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-15 01:22:27,716 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Performed 21 root evaluator evaluations with a maximum evaluation depth of 2. Performed 21 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Never found a fixpoint. Largest state had 30 variables. [2019-10-15 01:22:27,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:22:27,719 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-15 01:22:27,765 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 96.67% of their original sizes. [2019-10-15 01:22:27,765 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-15 01:22:27,777 INFO L553 sIntCurrentIteration]: We unified 42 AI predicates to 42 [2019-10-15 01:22:27,778 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-15 01:22:27,778 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-15 01:22:27,779 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 5, 6] total 11 [2019-10-15 01:22:27,779 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145212560] [2019-10-15 01:22:27,780 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:22:27,781 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-15 01:22:27,781 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-15 01:22:27,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:22:27,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:22:27,782 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 3 states. [2019-10-15 01:22:27,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:22:27,786 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2019-10-15 01:22:27,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:22:27,786 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2019-10-15 01:22:27,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:22:27,787 INFO L225 Difference]: With dead ends: 28 [2019-10-15 01:22:27,787 INFO L226 Difference]: Without dead ends: 0 [2019-10-15 01:22:27,790 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:22:27,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-15 01:22:27,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-15 01:22:27,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-15 01:22:27,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-15 01:22:27,791 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2019-10-15 01:22:27,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:22:27,792 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-15 01:22:27,792 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:22:27,792 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-15 01:22:27,795 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-15 01:22:27,998 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:22:28,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-15 01:22:28,073 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-15 01:22:28,073 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-15 01:22:28,073 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:22:28,073 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:22:28,073 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~N~0 2147483647) (<= 0 (+ ~N~0 2147483648))) [2019-10-15 01:22:28,074 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-15 01:22:28,074 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-15 01:22:28,074 INFO L439 ceAbstractionStarter]: At program point L33(line 33) the Hoare annotation is: (or (not (<= |old(~N~0)| 2147483647)) (not (<= 0 (+ |old(~N~0)| 2147483648)))) [2019-10-15 01:22:28,074 INFO L443 ceAbstractionStarter]: For program point L35-2(lines 35 37) no Hoare annotation was computed. [2019-10-15 01:22:28,074 INFO L443 ceAbstractionStarter]: For program point L33-1(line 33) no Hoare annotation was computed. [2019-10-15 01:22:28,074 INFO L439 ceAbstractionStarter]: At program point L35-3(lines 35 37) the Hoare annotation is: (or (not (<= |old(~N~0)| 2147483647)) (not (<= 0 (+ |old(~N~0)| 2147483648)))) [2019-10-15 01:22:28,074 INFO L443 ceAbstractionStarter]: For program point L35-4(lines 35 37) no Hoare annotation was computed. [2019-10-15 01:22:28,075 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 20 46) no Hoare annotation was computed. [2019-10-15 01:22:28,075 INFO L443 ceAbstractionStarter]: For program point L23(lines 23 44) no Hoare annotation was computed. [2019-10-15 01:22:28,075 INFO L443 ceAbstractionStarter]: For program point L23-2(lines 23 44) no Hoare annotation was computed. [2019-10-15 01:22:28,075 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 20 46) no Hoare annotation was computed. [2019-10-15 01:22:28,075 INFO L443 ceAbstractionStarter]: For program point L42(line 42) no Hoare annotation was computed. [2019-10-15 01:22:28,075 INFO L439 ceAbstractionStarter]: At program point L30(line 30) the Hoare annotation is: (or (not (<= |old(~N~0)| 2147483647)) (not (<= 0 (+ |old(~N~0)| 2147483648)))) [2019-10-15 01:22:28,075 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 20 46) the Hoare annotation is: (or (not (<= |old(~N~0)| 2147483647)) (not (<= 0 (+ |old(~N~0)| 2147483648))) (and (<= ~N~0 2147483647) (<= 0 (+ ~N~0 2147483648)))) [2019-10-15 01:22:28,076 INFO L443 ceAbstractionStarter]: For program point L30-1(line 30) no Hoare annotation was computed. [2019-10-15 01:22:28,076 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 42) no Hoare annotation was computed. [2019-10-15 01:22:28,076 INFO L443 ceAbstractionStarter]: For program point L41(lines 41 43) no Hoare annotation was computed. [2019-10-15 01:22:28,076 INFO L439 ceAbstractionStarter]: At program point L39(line 39) the Hoare annotation is: (or (not (<= |old(~N~0)| 2147483647)) (not (<= 0 (+ |old(~N~0)| 2147483648)))) [2019-10-15 01:22:28,076 INFO L443 ceAbstractionStarter]: For program point L41-2(lines 41 43) no Hoare annotation was computed. [2019-10-15 01:22:28,076 INFO L443 ceAbstractionStarter]: For program point L39-1(line 39) no Hoare annotation was computed. [2019-10-15 01:22:28,077 INFO L443 ceAbstractionStarter]: For program point sepFINAL(lines 6 17) no Hoare annotation was computed. [2019-10-15 01:22:28,077 INFO L446 ceAbstractionStarter]: At program point sepENTRY(lines 6 17) the Hoare annotation is: true [2019-10-15 01:22:28,077 INFO L443 ceAbstractionStarter]: For program point L11(lines 11 14) no Hoare annotation was computed. [2019-10-15 01:22:28,077 INFO L443 ceAbstractionStarter]: For program point sepEXIT(lines 6 17) no Hoare annotation was computed. [2019-10-15 01:22:28,077 INFO L443 ceAbstractionStarter]: For program point L9-2(lines 9 15) no Hoare annotation was computed. [2019-10-15 01:22:28,077 INFO L446 ceAbstractionStarter]: At program point L9-3(lines 9 15) the Hoare annotation is: true [2019-10-15 01:22:28,077 INFO L443 ceAbstractionStarter]: For program point L9-4(lines 9 15) no Hoare annotation was computed. [2019-10-15 01:22:28,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 01:22:28 BoogieIcfgContainer [2019-10-15 01:22:28,094 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-15 01:22:28,099 INFO L168 Benchmark]: Toolchain (without parser) took 2980.45 ms. Allocated memory was 135.3 MB in the beginning and 226.0 MB in the end (delta: 90.7 MB). Free memory was 98.6 MB in the beginning and 145.1 MB in the end (delta: -46.4 MB). Peak memory consumption was 44.3 MB. Max. memory is 7.1 GB. [2019-10-15 01:22:28,104 INFO L168 Benchmark]: CDTParser took 1.15 ms. Allocated memory is still 135.3 MB. Free memory was 117.2 MB in the beginning and 117.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-15 01:22:28,106 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.71 ms. Allocated memory is still 135.3 MB. Free memory was 98.4 MB in the beginning and 88.2 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2019-10-15 01:22:28,107 INFO L168 Benchmark]: Boogie Preprocessor took 129.50 ms. Allocated memory was 135.3 MB in the beginning and 198.7 MB in the end (delta: 63.4 MB). Free memory was 88.2 MB in the beginning and 176.2 MB in the end (delta: -88.0 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2019-10-15 01:22:28,116 INFO L168 Benchmark]: RCFGBuilder took 381.46 ms. Allocated memory is still 198.7 MB. Free memory was 176.2 MB in the beginning and 160.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. [2019-10-15 01:22:28,117 INFO L168 Benchmark]: TraceAbstraction took 2153.86 ms. Allocated memory was 198.7 MB in the beginning and 226.0 MB in the end (delta: 27.3 MB). Free memory was 159.4 MB in the beginning and 145.1 MB in the end (delta: 14.3 MB). Peak memory consumption was 41.6 MB. Max. memory is 7.1 GB. [2019-10-15 01:22:28,126 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.15 ms. Allocated memory is still 135.3 MB. Free memory was 117.2 MB in the beginning and 117.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 309.71 ms. Allocated memory is still 135.3 MB. Free memory was 98.4 MB in the beginning and 88.2 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.50 ms. Allocated memory was 135.3 MB in the beginning and 198.7 MB in the end (delta: 63.4 MB). Free memory was 88.2 MB in the beginning and 176.2 MB in the end (delta: -88.0 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 381.46 ms. Allocated memory is still 198.7 MB. Free memory was 176.2 MB in the beginning and 160.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2153.86 ms. Allocated memory was 198.7 MB in the beginning and 226.0 MB in the end (delta: 27.3 MB). Free memory was 159.4 MB in the beginning and 145.1 MB in the end (delta: 14.3 MB). Peak memory consumption was 41.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 42]: 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: 35]: Loop Invariant Derived loop invariant: !(\old(N) <= 2147483647) || !(0 <= \old(N) + 2147483648) - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 32 locations, 1 error locations. Result: SAFE, OverallTime: 2.0s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 65 SDtfs, 56 SDslu, 46 SDs, 0 SdLazy, 47 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 114 GetRequests, 102 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 20 PreInvPairs, 20 NumberOfFragments, 77 HoareAnnotationTreeSize, 20 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 191 NumberOfCodeBlocks, 191 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 259 ConstructedInterpolants, 0 QuantifiedInterpolants, 14833 SizeOfPredicates, 4 NumberOfNonLiveVariables, 297 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 125/180 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 141, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9722222222222223, AVG_VARS_REMOVED_DURING_WEAKENING: 1.2857142857142858, AVG_WEAKENED_CONJUNCTS: 0.38095238095238093, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...