/usr/bin/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 -i ../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:23:05,548 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:23:05,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:23:05,570 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:23:05,570 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:23:05,573 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:23:05,575 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:23:05,584 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:23:05,588 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:23:05,590 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:23:05,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:23:05,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:23:05,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:23:05,596 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:23:05,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:23:05,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:23:05,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:23:05,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:23:05,604 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:23:05,609 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:23:05,613 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:23:05,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:23:05,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:23:05,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:23:05,621 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 21:23:05,621 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 21:23:05,621 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 21:23:05,623 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 21:23:05,623 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 21:23:05,625 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 21:23:05,625 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 21:23:05,627 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 21:23:05,628 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 21:23:05,629 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 21:23:05,631 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 21:23:05,631 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 21:23:05,632 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 21:23:05,632 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 21:23:05,632 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:23:05,633 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:23:05,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:23:05,636 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 [2019-11-06 21:23:05,668 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:23:05,669 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:23:05,675 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:23:05,675 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:23:05,675 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:23:05,676 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:23:05,676 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:23:05,676 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:23:05,676 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:23:05,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:23:05,677 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:23:05,678 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:23:05,678 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:23:05,678 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:23:05,678 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:23:05,678 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:23:05,679 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:23:05,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:23:05,679 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:23:05,679 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:23:05,679 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:23:05,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:23:05,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:23:05,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:23:05,680 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:23:05,680 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:23:05,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:23:05,681 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:23:05,681 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:23:05,949 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:23:05,961 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:23:05,965 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:23:05,966 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:23:05,966 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:23:05,967 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2019-11-06 21:23:06,025 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/736f24584/620b1e196e1e46cc9c6d8d68b3f23e57/FLAG09578ae3e [2019-11-06 21:23:06,464 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:23:06,465 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2019-11-06 21:23:06,471 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/736f24584/620b1e196e1e46cc9c6d8d68b3f23e57/FLAG09578ae3e [2019-11-06 21:23:06,856 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/736f24584/620b1e196e1e46cc9c6d8d68b3f23e57 [2019-11-06 21:23:06,866 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:23:06,867 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:23:06,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:23:06,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:23:06,872 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:23:06,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:23:06" (1/1) ... [2019-11-06 21:23:06,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@621cb336 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:23:06, skipping insertion in model container [2019-11-06 21:23:06,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:23:06" (1/1) ... [2019-11-06 21:23:06,882 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:23:06,903 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:23:07,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:23:07,121 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:23:07,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:23:07,155 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:23:07,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:23:07 WrapperNode [2019-11-06 21:23:07,155 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:23:07,157 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:23:07,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:23:07,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:23:07,256 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:23:07" (1/1) ... [2019-11-06 21:23:07,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:23:07" (1/1) ... [2019-11-06 21:23:07,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:23:07" (1/1) ... [2019-11-06 21:23:07,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:23:07" (1/1) ... [2019-11-06 21:23:07,268 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:23:07" (1/1) ... [2019-11-06 21:23:07,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:23:07" (1/1) ... [2019-11-06 21:23:07,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:23:07" (1/1) ... [2019-11-06 21:23:07,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:23:07,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:23:07,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:23:07,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:23:07,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:23:07" (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 [2019-11-06 21:23:07,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:23:07,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:23:07,330 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:23:07,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:23:07,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 21:23:07,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-06 21:23:07,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 21:23:07,331 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:23:07,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:23:07,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:23:07,512 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:23:07,513 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-06 21:23:07,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:23:07 BoogieIcfgContainer [2019-11-06 21:23:07,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:23:07,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:23:07,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:23:07,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:23:07,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:23:06" (1/3) ... [2019-11-06 21:23:07,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ac637c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:23:07, skipping insertion in model container [2019-11-06 21:23:07,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:23:07" (2/3) ... [2019-11-06 21:23:07,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ac637c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:23:07, skipping insertion in model container [2019-11-06 21:23:07,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:23:07" (3/3) ... [2019-11-06 21:23:07,547 INFO L109 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+lhb-reducer.c [2019-11-06 21:23:07,569 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:23:07,578 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:23:07,591 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:23:07,618 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:23:07,618 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:23:07,619 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:23:07,619 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:23:07,619 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:23:07,619 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:23:07,619 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:23:07,619 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:23:07,651 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-11-06 21:23:07,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-06 21:23:07,661 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:23:07,664 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:23:07,667 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:23:07,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:23:07,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1883805102, now seen corresponding path program 1 times [2019-11-06 21:23:07,679 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:23:07,679 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555332228] [2019-11-06 21:23:07,680 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:23:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:23:07,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:23:07,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:23:07,900 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555332228] [2019-11-06 21:23:07,901 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:23:07,901 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 21:23:07,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534808948] [2019-11-06 21:23:07,908 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 21:23:07,908 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:23:07,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 21:23:07,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-06 21:23:07,920 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 6 states. [2019-11-06 21:23:08,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:23:08,109 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2019-11-06 21:23:08,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 21:23:08,111 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2019-11-06 21:23:08,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:23:08,121 INFO L225 Difference]: With dead ends: 33 [2019-11-06 21:23:08,121 INFO L226 Difference]: Without dead ends: 16 [2019-11-06 21:23:08,125 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:23:08,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-06 21:23:08,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-06 21:23:08,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-06 21:23:08,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-11-06 21:23:08,167 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2019-11-06 21:23:08,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:23:08,168 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-11-06 21:23:08,168 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 21:23:08,169 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-11-06 21:23:08,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-06 21:23:08,169 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:23:08,170 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:23:08,170 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:23:08,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:23:08,171 INFO L82 PathProgramCache]: Analyzing trace with hash -2141584271, now seen corresponding path program 1 times [2019-11-06 21:23:08,171 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:23:08,171 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587225754] [2019-11-06 21:23:08,172 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:23:08,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:23:08,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:23:08,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:23:08,283 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587225754] [2019-11-06 21:23:08,283 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179848779] [2019-11-06 21:23:08,284 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 [2019-11-06 21:23:08,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:23:08,330 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-06 21:23:08,336 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:23:08,407 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:23:08,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:23:08,435 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 21:23:08,438 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 10 [2019-11-06 21:23:08,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144091086] [2019-11-06 21:23:08,440 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 21:23:08,443 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:23:08,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 21:23:08,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:23:08,445 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 10 states. [2019-11-06 21:23:08,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:23:08,610 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-11-06 21:23:08,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-06 21:23:08,610 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2019-11-06 21:23:08,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:23:08,611 INFO L225 Difference]: With dead ends: 19 [2019-11-06 21:23:08,611 INFO L226 Difference]: Without dead ends: 0 [2019-11-06 21:23:08,612 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2019-11-06 21:23:08,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-06 21:23:08,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-06 21:23:08,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-06 21:23:08,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-06 21:23:08,615 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2019-11-06 21:23:08,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:23:08,615 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-06 21:23:08,616 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 21:23:08,616 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-06 21:23:08,616 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-06 21:23:08,817 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:23:08,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-06 21:23:08,882 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-11-06 21:23:08,882 INFO L439 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__return_main~0 |old(~__return_main~0)|) (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= ~__return_65~0 |old(~__return_65~0)|)) [2019-11-06 21:23:08,883 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-06 21:23:08,883 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-06 21:23:08,883 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-06 21:23:08,883 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-06 21:23:08,883 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-06 21:23:08,884 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 9 69) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= ~__return_65~0 |old(~__return_65~0)|)) [2019-11-06 21:23:08,884 INFO L443 ceAbstractionStarter]: For program point L27(lines 27 66) no Hoare annotation was computed. [2019-11-06 21:23:08,884 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 9 69) no Hoare annotation was computed. [2019-11-06 21:23:08,884 INFO L443 ceAbstractionStarter]: For program point L21(lines 21 67) no Hoare annotation was computed. [2019-11-06 21:23:08,884 INFO L443 ceAbstractionStarter]: For program point L52(line 52) no Hoare annotation was computed. [2019-11-06 21:23:08,885 INFO L443 ceAbstractionStarter]: For program point L50(lines 50 59) no Hoare annotation was computed. [2019-11-06 21:23:08,885 INFO L443 ceAbstractionStarter]: For program point L15(lines 15 68) no Hoare annotation was computed. [2019-11-06 21:23:08,885 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 9 69) no Hoare annotation was computed. [2019-11-06 21:23:08,885 INFO L439 ceAbstractionStarter]: At program point L41(lines 28 62) the Hoare annotation is: (or (and (<= (+ (div (+ (- main_~main__x~0) (- 2)) (- 2)) 1) main_~main__y~0) (<= (+ main_~main__x~0 2) main_~main__y~0)) (<= (+ main_~main__x~0 51) main_~main__y~0)) [2019-11-06 21:23:08,895 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 52) no Hoare annotation was computed. [2019-11-06 21:23:08,895 INFO L443 ceAbstractionStarter]: For program point L35(lines 35 61) no Hoare annotation was computed. [2019-11-06 21:23:08,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:23:08 BoogieIcfgContainer [2019-11-06 21:23:08,912 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-06 21:23:08,915 INFO L168 Benchmark]: Toolchain (without parser) took 2047.08 ms. Allocated memory was 138.4 MB in the beginning and 235.9 MB in the end (delta: 97.5 MB). Free memory was 101.7 MB in the beginning and 206.3 MB in the end (delta: -104.6 MB). Peak memory consumption was 84.0 MB. Max. memory is 7.1 GB. [2019-11-06 21:23:08,916 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-11-06 21:23:08,917 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.15 ms. Allocated memory is still 138.4 MB. Free memory was 101.5 MB in the beginning and 91.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-11-06 21:23:08,919 INFO L168 Benchmark]: Boogie Preprocessor took 119.59 ms. Allocated memory was 138.4 MB in the beginning and 203.9 MB in the end (delta: 65.5 MB). Free memory was 91.9 MB in the beginning and 182.2 MB in the end (delta: -90.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2019-11-06 21:23:08,919 INFO L168 Benchmark]: RCFGBuilder took 238.38 ms. Allocated memory is still 203.9 MB. Free memory was 182.2 MB in the beginning and 170.6 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. [2019-11-06 21:23:08,921 INFO L168 Benchmark]: TraceAbstraction took 1388.34 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 169.9 MB in the beginning and 206.3 MB in the end (delta: -36.4 MB). Peak memory consumption was 86.7 MB. Max. memory is 7.1 GB. [2019-11-06 21:23:08,925 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 288.15 ms. Allocated memory is still 138.4 MB. Free memory was 101.5 MB in the beginning and 91.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.59 ms. Allocated memory was 138.4 MB in the beginning and 203.9 MB in the end (delta: 65.5 MB). Free memory was 91.9 MB in the beginning and 182.2 MB in the end (delta: -90.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 238.38 ms. Allocated memory is still 203.9 MB. Free memory was 182.2 MB in the beginning and 170.6 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1388.34 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 169.9 MB in the beginning and 206.3 MB in the end (delta: -36.4 MB). Peak memory consumption was 86.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 52]: 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: 28]: Loop Invariant Derived loop invariant: ((-main__x + -2) / -2 + 1 <= main__y && main__x + 2 <= main__y) || main__x + 51 <= main__y - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 18 locations, 1 error locations. Result: SAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 23 SDslu, 84 SDs, 0 SdLazy, 82 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 7 NumberOfFragments, 41 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 16 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 1928 SizeOfPredicates, 4 NumberOfNonLiveVariables, 70 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...