/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/terminator_03-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 22:15:39,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 22:15:39,567 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 22:15:39,584 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 22:15:39,584 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 22:15:39,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 22:15:39,587 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 22:15:39,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 22:15:39,590 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 22:15:39,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 22:15:39,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 22:15:39,593 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-11-23 22:15:39,625 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 [2019-11-23 22:15:39,644 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 22:15:39,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 22:15:39,646 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-23 22:15:39,646 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-23 22:15:39,646 INFO L138 SettingsManager]: * Use SBE=true [2019-11-23 22:15:39,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 22:15:39,647 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 22:15:39,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 22:15:39,647 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 22:15:39,647 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 22:15:39,648 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 22:15:39,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 22:15:39,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 22:15:39,649 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-23 22:15:39,650 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 22:15:39,650 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 22:15:39,650 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-23 22:15:39,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 22:15:39,650 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 22:15:39,651 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-23 22:15:39,651 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 22:15:39,651 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 22:15:39,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 22:15:39,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 22:15:39,652 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 22:15:39,652 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 22:15:39,652 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-23 22:15:39,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 22:15:39,653 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 22:15:39,653 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 22:15:39,903 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 22:15:39,914 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 22:15:39,918 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 22:15:39,919 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 22:15:39,919 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 22:15:39,920 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_03-2.i [2019-11-23 22:15:39,985 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2907e07f2/7edd09fc8f564dc6a024e05df288192d/FLAG74592d266 [2019-11-23 22:15:40,422 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 22:15:40,423 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_03-2.i [2019-11-23 22:15:40,429 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2907e07f2/7edd09fc8f564dc6a024e05df288192d/FLAG74592d266 [2019-11-23 22:15:40,801 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2907e07f2/7edd09fc8f564dc6a024e05df288192d [2019-11-23 22:15:40,809 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 22:15:40,811 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 22:15:40,812 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 22:15:40,812 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 22:15:40,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 22:15:40,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:15:40" (1/1) ... [2019-11-23 22:15:40,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7643fccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:40, skipping insertion in model container [2019-11-23 22:15:40,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:15:40" (1/1) ... [2019-11-23 22:15:40,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 22:15:40,843 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 22:15:41,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:15:41,028 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 22:15:41,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:15:41,065 INFO L208 MainTranslator]: Completed translation [2019-11-23 22:15:41,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:41 WrapperNode [2019-11-23 22:15:41,067 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 22:15:41,067 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 22:15:41,068 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 22:15:41,068 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 22:15:41,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:41" (1/1) ... [2019-11-23 22:15:41,083 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:41" (1/1) ... [2019-11-23 22:15:41,174 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 22:15:41,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 22:15:41,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 22:15:41,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 22:15:41,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:41" (1/1) ... [2019-11-23 22:15:41,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:41" (1/1) ... [2019-11-23 22:15:41,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:41" (1/1) ... [2019-11-23 22:15:41,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:41" (1/1) ... [2019-11-23 22:15:41,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:41" (1/1) ... [2019-11-23 22:15:41,192 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:41" (1/1) ... [2019-11-23 22:15:41,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:41" (1/1) ... [2019-11-23 22:15:41,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 22:15:41,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 22:15:41,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 22:15:41,195 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 22:15:41,195 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:41" (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 [2019-11-23 22:15:41,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 22:15:41,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 22:15:41,418 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 22:15:41,419 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-23 22:15:41,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:15:41 BoogieIcfgContainer [2019-11-23 22:15:41,421 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 22:15:41,422 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 22:15:41,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 22:15:41,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 22:15:41,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:15:40" (1/3) ... [2019-11-23 22:15:41,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@284fcb9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:15:41, skipping insertion in model container [2019-11-23 22:15:41,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:41" (2/3) ... [2019-11-23 22:15:41,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@284fcb9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:15:41, skipping insertion in model container [2019-11-23 22:15:41,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:15:41" (3/3) ... [2019-11-23 22:15:41,428 INFO L109 eAbstractionObserver]: Analyzing ICFG terminator_03-2.i [2019-11-23 22:15:41,437 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 22:15:41,444 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 22:15:41,456 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 22:15:41,480 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 22:15:41,480 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 22:15:41,481 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 22:15:41,481 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 22:15:41,481 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 22:15:41,481 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 22:15:41,481 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 22:15:41,482 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 22:15:41,496 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-11-23 22:15:41,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-23 22:15:41,501 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:15:41,502 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-23 22:15:41,503 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:15:41,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:15:41,509 INFO L82 PathProgramCache]: Analyzing trace with hash 922384074, now seen corresponding path program 1 times [2019-11-23 22:15:41,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:15:41,516 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973487128] [2019-11-23 22:15:41,516 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:15:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:15:41,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:15:41,679 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973487128] [2019-11-23 22:15:41,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:15:41,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 22:15:41,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050974230] [2019-11-23 22:15:41,693 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 22:15:41,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:15:41,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 22:15:41,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-23 22:15:41,719 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 4 states. [2019-11-23 22:15:41,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:15:41,801 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2019-11-23 22:15:41,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 22:15:41,803 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-11-23 22:15:41,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:15:41,813 INFO L225 Difference]: With dead ends: 29 [2019-11-23 22:15:41,813 INFO L226 Difference]: Without dead ends: 8 [2019-11-23 22:15:41,817 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:15:41,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-23 22:15:41,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-23 22:15:41,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-23 22:15:41,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-11-23 22:15:41,849 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2019-11-23 22:15:41,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:15:41,850 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-11-23 22:15:41,850 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 22:15:41,850 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-11-23 22:15:41,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-23 22:15:41,850 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:15:41,851 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:15:41,851 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:15:41,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:15:41,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1484065106, now seen corresponding path program 1 times [2019-11-23 22:15:41,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:15:41,852 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147020524] [2019-11-23 22:15:41,852 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:15:41,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:15:41,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:15:41,918 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147020524] [2019-11-23 22:15:41,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:15:41,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-23 22:15:41,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483442428] [2019-11-23 22:15:41,920 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-23 22:15:41,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:15:41,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-23 22:15:41,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:15:41,922 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 5 states. [2019-11-23 22:15:41,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:15:41,961 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2019-11-23 22:15:41,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 22:15:41,962 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-23 22:15:41,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:15:41,962 INFO L225 Difference]: With dead ends: 8 [2019-11-23 22:15:41,962 INFO L226 Difference]: Without dead ends: 0 [2019-11-23 22:15:41,963 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-23 22:15:41,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-23 22:15:41,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-23 22:15:41,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-23 22:15:41,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-23 22:15:41,966 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2019-11-23 22:15:41,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:15:41,966 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-23 22:15:41,966 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-23 22:15:41,966 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-23 22:15:41,966 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-23 22:15:41,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-23 22:15:41,989 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-23 22:15:41,990 INFO L447 ceAbstractionStarter]: At program point L21(lines 11 22) the Hoare annotation is: true [2019-11-23 22:15:41,990 INFO L444 ceAbstractionStarter]: For program point L15(lines 15 19) no Hoare annotation was computed. [2019-11-23 22:15:41,990 INFO L444 ceAbstractionStarter]: For program point L15-1(lines 15 19) no Hoare annotation was computed. [2019-11-23 22:15:41,990 INFO L444 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-23 22:15:41,990 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-23 22:15:41,990 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-23 22:15:41,991 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-23 22:15:41,991 INFO L444 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2019-11-23 22:15:41,991 INFO L440 ceAbstractionStarter]: At program point L16-2(lines 16 18) the Hoare annotation is: (< 0 ULTIMATE.start_main_~y~0) [2019-11-23 22:15:41,991 INFO L444 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-23 22:15:41,991 INFO L440 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2019-11-23 22:15:42,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:15:42 BoogieIcfgContainer [2019-11-23 22:15:42,004 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-23 22:15:42,007 INFO L168 Benchmark]: Toolchain (without parser) took 1195.60 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 104.0 MB in the beginning and 138.1 MB in the end (delta: -34.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2019-11-23 22:15:42,009 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-23 22:15:42,010 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.45 ms. Allocated memory is still 146.3 MB. Free memory was 103.8 MB in the beginning and 94.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-11-23 22:15:42,012 INFO L168 Benchmark]: Boogie Procedure Inliner took 107.15 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 94.5 MB in the beginning and 183.5 MB in the end (delta: -89.1 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2019-11-23 22:15:42,013 INFO L168 Benchmark]: Boogie Preprocessor took 16.87 ms. Allocated memory is still 203.4 MB. Free memory was 182.6 MB in the beginning and 182.0 MB in the end (delta: 653.1 kB). Peak memory consumption was 653.1 kB. Max. memory is 7.1 GB. [2019-11-23 22:15:42,014 INFO L168 Benchmark]: RCFGBuilder took 226.33 ms. Allocated memory is still 203.4 MB. Free memory was 182.0 MB in the beginning and 170.5 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2019-11-23 22:15:42,015 INFO L168 Benchmark]: TraceAbstraction took 582.85 ms. Allocated memory is still 203.4 MB. Free memory was 170.5 MB in the beginning and 138.1 MB in the end (delta: 32.4 MB). Peak memory consumption was 32.4 MB. Max. memory is 7.1 GB. [2019-11-23 22:15:42,020 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 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 255.45 ms. Allocated memory is still 146.3 MB. Free memory was 103.8 MB in the beginning and 94.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 107.15 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 94.5 MB in the beginning and 183.5 MB in the end (delta: -89.1 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 16.87 ms. Allocated memory is still 203.4 MB. Free memory was 182.6 MB in the beginning and 182.0 MB in the end (delta: 653.1 kB). Peak memory consumption was 653.1 kB. Max. memory is 7.1 GB. * RCFGBuilder took 226.33 ms. Allocated memory is still 203.4 MB. Free memory was 182.0 MB in the beginning and 170.5 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 582.85 ms. Allocated memory is still 203.4 MB. Free memory was 170.5 MB in the beginning and 138.1 MB in the end (delta: 32.4 MB). Peak memory consumption was 32.4 MB. 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: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: !(0 == cond) - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 < y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Result: SAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 16 SDslu, 23 SDs, 0 SdLazy, 17 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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, 3 LocationsWithAnnotation, 3 PreInvPairs, 8 NumberOfFragments, 8 HoareAnnotationTreeSize, 3 FomulaSimplifications, 9 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 152 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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...