/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-regression/test24-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 03:52:46,483 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 03:52:46,486 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 03:52:46,530 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 03:52:46,593 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 03:52:46,621 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 03:52:46,621 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 03:52:46,623 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 03:52:46,623 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 03:52:46,624 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 03:52:46,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 03:52:46,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 03:52:46,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 03:52:46,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 03:52:46,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 03:52:46,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 03:52:46,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 03:52:46,626 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 03:52:46,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 03:52:46,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 03:52:46,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 03:52:46,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 03:52:46,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 03:52:46,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 03:52:46,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 03:52:46,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 03:52:46,628 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 03:52:46,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 03:52:46,629 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 03:52:46,629 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 03:52:46,629 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 03:52:47,071 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 03:52:47,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 03:52:47,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 03:52:47,104 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 03:52:47,105 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 03:52:47,106 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test24-1.c [2020-12-22 03:52:47,186 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/585143e4b/30e4a0a0e4ab49afa54f35f8a6408be2/FLAG3c0cc44ed [2020-12-22 03:52:47,818 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 03:52:47,819 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test24-1.c [2020-12-22 03:52:47,827 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/585143e4b/30e4a0a0e4ab49afa54f35f8a6408be2/FLAG3c0cc44ed [2020-12-22 03:52:48,177 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/585143e4b/30e4a0a0e4ab49afa54f35f8a6408be2 [2020-12-22 03:52:48,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 03:52:48,184 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 03:52:48,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 03:52:48,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 03:52:48,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 03:52:48,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:52:48" (1/1) ... [2020-12-22 03:52:48,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bf9d6c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:52:48, skipping insertion in model container [2020-12-22 03:52:48,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:52:48" (1/1) ... [2020-12-22 03:52:48,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 03:52:48,223 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 03:52:48,391 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test24-1.c[704,717] [2020-12-22 03:52:48,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:52:48,402 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 03:52:48,424 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test24-1.c[704,717] [2020-12-22 03:52:48,425 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:52:48,440 INFO L208 MainTranslator]: Completed translation [2020-12-22 03:52:48,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:52:48 WrapperNode [2020-12-22 03:52:48,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 03:52:48,442 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 03:52:48,443 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 03:52:48,443 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 03:52:48,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:52:48" (1/1) ... [2020-12-22 03:52:48,459 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:52:48" (1/1) ... [2020-12-22 03:52:48,480 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 03:52:48,481 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 03:52:48,481 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 03:52:48,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 03:52:48,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:52:48" (1/1) ... [2020-12-22 03:52:48,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:52:48" (1/1) ... [2020-12-22 03:52:48,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:52:48" (1/1) ... [2020-12-22 03:52:48,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:52:48" (1/1) ... [2020-12-22 03:52:48,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:52:48" (1/1) ... [2020-12-22 03:52:48,503 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:52:48" (1/1) ... [2020-12-22 03:52:48,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:52:48" (1/1) ... [2020-12-22 03:52:48,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 03:52:48,508 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 03:52:48,508 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 03:52:48,508 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 03:52:48,509 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:52:48" (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 [2020-12-22 03:52:48,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 03:52:48,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 03:52:48,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 03:52:48,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 03:52:48,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 03:52:48,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 03:52:48,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 03:52:48,976 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 03:52:48,977 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-22 03:52:48,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:52:48 BoogieIcfgContainer [2020-12-22 03:52:48,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 03:52:48,987 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 03:52:48,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 03:52:48,995 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 03:52:48,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:52:48" (1/3) ... [2020-12-22 03:52:48,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26d077ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:52:48, skipping insertion in model container [2020-12-22 03:52:48,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:52:48" (2/3) ... [2020-12-22 03:52:48,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26d077ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:52:48, skipping insertion in model container [2020-12-22 03:52:48,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:52:48" (3/3) ... [2020-12-22 03:52:49,005 INFO L111 eAbstractionObserver]: Analyzing ICFG test24-1.c [2020-12-22 03:52:49,025 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 03:52:49,039 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 03:52:49,086 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 03:52:49,137 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 03:52:49,138 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 03:52:49,138 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 03:52:49,138 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 03:52:49,138 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 03:52:49,138 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 03:52:49,138 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 03:52:49,139 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 03:52:49,193 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-12-22 03:52:49,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 03:52:49,203 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:52:49,204 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:52:49,204 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:52:49,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:52:49,220 INFO L82 PathProgramCache]: Analyzing trace with hash 126985497, now seen corresponding path program 1 times [2020-12-22 03:52:49,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:52:49,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014863991] [2020-12-22 03:52:49,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:52:49,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:52:49,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:52:49,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014863991] [2020-12-22 03:52:49,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:52:49,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 03:52:49,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485187907] [2020-12-22 03:52:49,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 03:52:49,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:52:49,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 03:52:49,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:52:49,446 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-12-22 03:52:49,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:52:49,464 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2020-12-22 03:52:49,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 03:52:49,466 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-22 03:52:49,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:52:49,476 INFO L225 Difference]: With dead ends: 23 [2020-12-22 03:52:49,476 INFO L226 Difference]: Without dead ends: 10 [2020-12-22 03:52:49,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:52:49,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-12-22 03:52:49,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-12-22 03:52:49,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-12-22 03:52:49,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-12-22 03:52:49,520 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2020-12-22 03:52:49,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:52:49,520 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-12-22 03:52:49,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 03:52:49,521 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-12-22 03:52:49,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 03:52:49,521 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:52:49,521 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:52:49,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 03:52:49,522 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:52:49,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:52:49,523 INFO L82 PathProgramCache]: Analyzing trace with hash -564424753, now seen corresponding path program 1 times [2020-12-22 03:52:49,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:52:49,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044596543] [2020-12-22 03:52:49,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:52:49,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:52:49,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:52:49,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044596543] [2020-12-22 03:52:49,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:52:49,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 03:52:49,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638959397] [2020-12-22 03:52:49,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 03:52:49,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:52:49,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 03:52:49,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 03:52:49,814 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 5 states. [2020-12-22 03:52:49,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:52:49,891 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2020-12-22 03:52:49,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 03:52:49,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-12-22 03:52:49,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:52:49,892 INFO L225 Difference]: With dead ends: 17 [2020-12-22 03:52:49,893 INFO L226 Difference]: Without dead ends: 12 [2020-12-22 03:52:49,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 03:52:49,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-12-22 03:52:49,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-12-22 03:52:49,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-22 03:52:49,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-12-22 03:52:49,906 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2020-12-22 03:52:49,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:52:49,907 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-12-22 03:52:49,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 03:52:49,908 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-12-22 03:52:49,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 03:52:49,908 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:52:49,910 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:52:49,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 03:52:49,911 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:52:49,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:52:49,915 INFO L82 PathProgramCache]: Analyzing trace with hash 263489748, now seen corresponding path program 1 times [2020-12-22 03:52:49,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:52:49,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596333883] [2020-12-22 03:52:49,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:52:50,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:52:50,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:52:50,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596333883] [2020-12-22 03:52:50,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813214732] [2020-12-22 03:52:50,200 INFO L95 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 [2020-12-22 03:52:50,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:52:50,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-22 03:52:50,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 03:52:50,506 INFO L348 Elim1Store]: treesize reduction 31, result has 8.8 percent of original size [2020-12-22 03:52:50,507 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 12 [2020-12-22 03:52:50,511 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 03:52:50,515 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 03:52:50,515 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 03:52:50,516 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:43, output treesize:5 [2020-12-22 03:52:50,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:52:50,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 03:52:50,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 10 [2020-12-22 03:52:50,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535480700] [2020-12-22 03:52:50,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 03:52:50,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:52:50,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 03:52:50,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-12-22 03:52:50,541 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 10 states. [2020-12-22 03:52:50,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:52:50,745 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2020-12-22 03:52:50,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 03:52:50,746 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 11 [2020-12-22 03:52:50,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:52:50,747 INFO L225 Difference]: With dead ends: 21 [2020-12-22 03:52:50,747 INFO L226 Difference]: Without dead ends: 16 [2020-12-22 03:52:50,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-12-22 03:52:50,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-22 03:52:50,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-22 03:52:50,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-22 03:52:50,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-12-22 03:52:50,753 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 11 [2020-12-22 03:52:50,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:52:50,754 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-12-22 03:52:50,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 03:52:50,754 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-12-22 03:52:50,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 03:52:50,755 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:52:50,755 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:52:50,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-22 03:52:50,971 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:52:50,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:52:50,973 INFO L82 PathProgramCache]: Analyzing trace with hash -919715042, now seen corresponding path program 2 times [2020-12-22 03:52:50,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:52:50,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651750673] [2020-12-22 03:52:50,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:52:51,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:52:51,170 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:52:51,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651750673] [2020-12-22 03:52:51,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958471975] [2020-12-22 03:52:51,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-12-22 03:52:51,243 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 03:52:51,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 03:52:51,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 03:52:51,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 03:52:51,293 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2020-12-22 03:52:51,294 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 03:52:51,304 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 03:52:51,309 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 03:52:51,309 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:63, output treesize:53 [2020-12-22 03:52:59,633 INFO L348 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2020-12-22 03:52:59,635 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 17 [2020-12-22 03:52:59,639 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 03:52:59,646 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 03:52:59,652 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 03:52:59,652 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:60, output treesize:5 [2020-12-22 03:52:59,675 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:52:59,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 03:52:59,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2020-12-22 03:52:59,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804655827] [2020-12-22 03:52:59,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 03:52:59,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:52:59,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 03:52:59,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=123, Unknown=4, NotChecked=0, Total=182 [2020-12-22 03:52:59,681 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 14 states. [2020-12-22 03:53:00,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:53:00,384 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2020-12-22 03:53:00,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 03:53:00,385 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 15 [2020-12-22 03:53:00,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:53:00,386 INFO L225 Difference]: With dead ends: 29 [2020-12-22 03:53:00,386 INFO L226 Difference]: Without dead ends: 24 [2020-12-22 03:53:00,387 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=240, Invalid=512, Unknown=4, NotChecked=0, Total=756 [2020-12-22 03:53:00,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-22 03:53:00,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-12-22 03:53:00,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-22 03:53:00,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2020-12-22 03:53:00,393 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 15 [2020-12-22 03:53:00,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:53:00,394 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2020-12-22 03:53:00,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 03:53:00,394 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2020-12-22 03:53:00,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 03:53:00,395 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:53:00,395 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:53:00,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 03:53:00,606 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:53:00,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:53:00,607 INFO L82 PathProgramCache]: Analyzing trace with hash 607492274, now seen corresponding path program 3 times [2020-12-22 03:53:00,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:53:00,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039213828] [2020-12-22 03:53:00,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:53:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:53:00,869 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:53:00,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039213828] [2020-12-22 03:53:00,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357121921] [2020-12-22 03:53:00,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 03:53:00,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-22 03:53:00,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 03:53:00,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-22 03:53:00,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 03:53:00,961 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2020-12-22 03:53:00,963 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 03:53:00,977 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 03:53:00,979 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 03:53:00,980 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:40, output treesize:36 [2020-12-22 03:53:01,222 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 03:53:01,452 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 03:53:01,458 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 03:53:01,460 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 03:53:01,467 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 03:53:01,533 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-12-22 03:53:01,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 03:53:01,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2020-12-22 03:53:01,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116778094] [2020-12-22 03:53:01,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-22 03:53:01,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:53:01,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-22 03:53:01,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2020-12-22 03:53:01,536 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 20 states. [2020-12-22 03:53:05,761 WARN L197 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2020-12-22 03:53:09,008 WARN L197 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-12-22 03:53:09,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:53:09,816 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2020-12-22 03:53:09,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 03:53:09,816 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 23 [2020-12-22 03:53:09,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:53:09,817 INFO L225 Difference]: With dead ends: 29 [2020-12-22 03:53:09,817 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 03:53:09,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=418, Invalid=1222, Unknown=0, NotChecked=0, Total=1640 [2020-12-22 03:53:09,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 03:53:09,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 03:53:09,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 03:53:09,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 03:53:09,822 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2020-12-22 03:53:09,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:53:09,823 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 03:53:09,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-12-22 03:53:09,823 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 03:53:09,823 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 03:53:10,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 03:53:10,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-22 03:53:10,212 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-22 03:53:10,212 INFO L189 CegarLoopUtils]: For program point L31(lines 31 33) no Hoare annotation was computed. [2020-12-22 03:53:10,212 INFO L189 CegarLoopUtils]: For program point L23(lines 23 34) no Hoare annotation was computed. [2020-12-22 03:53:10,213 INFO L189 CegarLoopUtils]: For program point L23-2(lines 23 34) no Hoare annotation was computed. [2020-12-22 03:53:10,213 INFO L185 CegarLoopUtils]: At program point L13(lines 11 14) the Hoare annotation is: (and (= |ULTIMATE.start_check_#res| 1) (= |ULTIMATE.start_main_~#ad1~0.offset| 0) (exists ((aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110 Int) (aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118 Int)) (let ((.cse0 (select |#memory_int| |ULTIMATE.start_main_~#ad1~0.base|))) (let ((.cse1 (select .cse0 (div (+ (* |ULTIMATE.start_main_~#ad1~0.offset| (- 1)) (* (div (+ (* |ULTIMATE.start_main_~#ad1~0.offset| 8) (* (div (* aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110 42) 6) (- 8))) (- 8)) (- 8))) 7))) (.cse2 (* 8 aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110)) (.cse3 (* 8 aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118))) (and (= aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118 (select .cse0 (+ |ULTIMATE.start_main_~#ad1~0.offset| (* aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118 8)))) (<= .cse1 ULTIMATE.start_main_~i~0) (< ULTIMATE.start_main_~i~0 (+ .cse1 1)) (< (+ .cse2 .cse3) 8) (< 0 (+ .cse2 .cse3 1)))))) (= ULTIMATE.start_main_~pa~0.base |ULTIMATE.start_main_~#ad1~0.base|) (< ULTIMATE.start_main_~i~0 (+ (select (select |#memory_int| ULTIMATE.start_main_~pa~0.base) ULTIMATE.start_main_~pa~0.offset) 1)) (= (mod (+ |ULTIMATE.start_main_~#ad1~0.offset| (* ULTIMATE.start_main_~pa~0.offset 7)) (- 8)) 0) (let ((.cse4 (div (+ |ULTIMATE.start_main_~#ad1~0.offset| (* ULTIMATE.start_main_~pa~0.offset (- 1))) (- 8)))) (= .cse4 (select (select |#memory_int| |ULTIMATE.start_main_~#ad1~0.base|) (+ |ULTIMATE.start_main_~#ad1~0.offset| (* .cse4 8)))))) [2020-12-22 03:53:10,213 INFO L185 CegarLoopUtils]: At program point L32(lines 17 40) the Hoare annotation is: false [2020-12-22 03:53:10,213 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-22 03:53:10,214 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-22 03:53:10,214 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-22 03:53:10,214 INFO L189 CegarLoopUtils]: For program point L28-1(lines 28 30) no Hoare annotation was computed. [2020-12-22 03:53:10,214 INFO L185 CegarLoopUtils]: At program point L28-3(lines 28 30) the Hoare annotation is: (and (= |ULTIMATE.start_main_~#ad1~0.offset| 0) (= ULTIMATE.start_main_~pa~0.base |ULTIMATE.start_main_~#ad1~0.base|) (< ULTIMATE.start_main_~i~0 (+ (select (select |#memory_int| ULTIMATE.start_main_~pa~0.base) ULTIMATE.start_main_~pa~0.offset) 1)) (= (mod (+ |ULTIMATE.start_main_~#ad1~0.offset| (* ULTIMATE.start_main_~pa~0.offset 7)) (- 8)) 0) (let ((.cse0 (div (+ |ULTIMATE.start_main_~#ad1~0.offset| (* ULTIMATE.start_main_~pa~0.offset (- 1))) (- 8)))) (= .cse0 (select (select |#memory_int| |ULTIMATE.start_main_~#ad1~0.base|) (+ |ULTIMATE.start_main_~#ad1~0.offset| (* .cse0 8)))))) [2020-12-22 03:53:10,214 INFO L189 CegarLoopUtils]: For program point L28-4(lines 28 30) no Hoare annotation was computed. [2020-12-22 03:53:10,214 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 38) no Hoare annotation was computed. [2020-12-22 03:53:10,215 INFO L192 CegarLoopUtils]: At program point L39(lines 16 40) the Hoare annotation is: true [2020-12-22 03:53:10,227 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] [2020-12-22 03:53:10,228 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] [2020-12-22 03:53:10,229 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] [2020-12-22 03:53:10,229 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] [2020-12-22 03:53:10,229 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] [2020-12-22 03:53:10,229 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] [2020-12-22 03:53:10,230 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] [2020-12-22 03:53:10,230 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] [2020-12-22 03:53:10,238 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] [2020-12-22 03:53:10,239 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] [2020-12-22 03:53:10,239 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] [2020-12-22 03:53:10,239 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] [2020-12-22 03:53:10,239 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] [2020-12-22 03:53:10,240 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] [2020-12-22 03:53:10,240 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] [2020-12-22 03:53:10,240 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] [2020-12-22 03:53:10,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 03:53:10 BoogieIcfgContainer [2020-12-22 03:53:10,247 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 03:53:10,248 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 03:53:10,248 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 03:53:10,248 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 03:53:10,249 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:52:48" (3/4) ... [2020-12-22 03:53:10,253 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 03:53:10,264 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-22 03:53:10,265 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-12-22 03:53:10,265 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 03:53:10,265 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 03:53:10,295 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((\result == 1 && ad1 == 0) && (\exists aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110 : int, aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118 : int :: (((aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118 == unknown-#memory_int-unknown[ad1][ad1 + aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118 * 8] && unknown-#memory_int-unknown[ad1][(ad1 * -1 + (ad1 * 8 + aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110 * 42 / 6 * -8) / -8 * -8) / 7] <= i) && i < unknown-#memory_int-unknown[ad1][(ad1 * -1 + (ad1 * 8 + aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110 * 42 / 6 * -8) / -8 * -8) / 7] + 1) && 8 * aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110 + 8 * aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118 < 8) && 0 < 8 * aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110 + 8 * aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118 + 1)) && pa == ad1) && i < unknown-#memory_int-unknown[pa][pa] + 1) && (ad1 + pa * 7) % -8 == 0) && (ad1 + pa * -1) / -8 == unknown-#memory_int-unknown[ad1][ad1 + (ad1 + pa * -1) / -8 * 8] [2020-12-22 03:53:10,314 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/ldv-regression/test24-1.c-witness.graphml [2020-12-22 03:53:10,314 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 03:53:10,316 INFO L168 Benchmark]: Toolchain (without parser) took 22132.12 ms. Allocated memory was 160.4 MB in the beginning and 207.6 MB in the end (delta: 47.2 MB). Free memory was 136.2 MB in the beginning and 167.2 MB in the end (delta: -31.0 MB). Peak memory consumption was 16.9 MB. Max. memory is 8.0 GB. [2020-12-22 03:53:10,316 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 160.4 MB. Free memory is still 132.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:53:10,317 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.86 ms. Allocated memory is still 160.4 MB. Free memory was 136.0 MB in the beginning and 126.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 03:53:10,318 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.97 ms. Allocated memory is still 160.4 MB. Free memory was 126.3 MB in the beginning and 124.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:53:10,319 INFO L168 Benchmark]: Boogie Preprocessor took 25.89 ms. Allocated memory is still 160.4 MB. Free memory was 124.9 MB in the beginning and 123.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:53:10,319 INFO L168 Benchmark]: RCFGBuilder took 474.45 ms. Allocated memory is still 160.4 MB. Free memory was 123.7 MB in the beginning and 110.5 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-12-22 03:53:10,320 INFO L168 Benchmark]: TraceAbstraction took 21260.36 ms. Allocated memory was 160.4 MB in the beginning and 207.6 MB in the end (delta: 47.2 MB). Free memory was 110.1 MB in the beginning and 170.3 MB in the end (delta: -60.2 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:53:10,321 INFO L168 Benchmark]: Witness Printer took 66.28 ms. Allocated memory is still 207.6 MB. Free memory was 170.3 MB in the beginning and 167.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:53:10,325 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 160.4 MB. Free memory is still 132.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 254.86 ms. Allocated memory is still 160.4 MB. Free memory was 136.0 MB in the beginning and 126.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 37.97 ms. Allocated memory is still 160.4 MB. Free memory was 126.3 MB in the beginning and 124.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 25.89 ms. Allocated memory is still 160.4 MB. Free memory was 124.9 MB in the beginning and 123.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 474.45 ms. Allocated memory is still 160.4 MB. Free memory was 123.7 MB in the beginning and 110.5 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 21260.36 ms. Allocated memory was 160.4 MB in the beginning and 207.6 MB in the end (delta: 47.2 MB). Free memory was 110.1 MB in the beginning and 170.3 MB in the end (delta: -60.2 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 66.28 ms. Allocated memory is still 207.6 MB. Free memory was 170.3 MB in the beginning and 167.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 38]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant [2020-12-22 03:53:10,340 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] [2020-12-22 03:53:10,340 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] [2020-12-22 03:53:10,340 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] [2020-12-22 03:53:10,341 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] [2020-12-22 03:53:10,341 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] [2020-12-22 03:53:10,341 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] [2020-12-22 03:53:10,341 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] [2020-12-22 03:53:10,342 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] [2020-12-22 03:53:10,344 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] [2020-12-22 03:53:10,344 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] [2020-12-22 03:53:10,345 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] [2020-12-22 03:53:10,345 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] [2020-12-22 03:53:10,345 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] [2020-12-22 03:53:10,345 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] [2020-12-22 03:53:10,345 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110,QUANTIFIED] [2020-12-22 03:53:10,346 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118,QUANTIFIED] Derived loop invariant: (((((\result == 1 && ad1 == 0) && (\exists aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110 : int, aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118 : int :: (((aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118 == unknown-#memory_int-unknown[ad1][ad1 + aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118 * 8] && unknown-#memory_int-unknown[ad1][(ad1 * -1 + (ad1 * 8 + aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110 * 42 / 6 * -8) / -8 * -8) / 7] <= i) && i < unknown-#memory_int-unknown[ad1][(ad1 * -1 + (ad1 * 8 + aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110 * 42 / 6 * -8) / -8 * -8) / 7] + 1) && 8 * aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110 + 8 * aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118 < 8) && 0 < 8 * aux_div_aux_div_aux_div_aux_mod_aux_mod_aux_mod_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_170_161_91_267_110 + 8 * aux_div_aux_div_aux_div_ULTIMATE.start_main_~pa~0.offset_91_112_118 + 1)) && pa == ad1) && i < unknown-#memory_int-unknown[pa][pa] + 1) && (ad1 + pa * 7) % -8 == 0) && (ad1 + pa * -1) / -8 == unknown-#memory_int-unknown[ad1][ad1 + (ad1 + pa * -1) / -8 * 8] - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (((ad1 == 0 && pa == ad1) && i < unknown-#memory_int-unknown[pa][pa] + 1) && (ad1 + pa * 7) % -8 == 0) && (ad1 + pa * -1) / -8 == unknown-#memory_int-unknown[ad1][ad1 + (ad1 + pa * -1) / -8 * 8] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 20.9s, OverallIterations: 5, TraceHistogramMax: 8, AutomataDifference: 9.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 35 SDtfs, 81 SDslu, 52 SDs, 0 SdLazy, 203 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 17.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=4, 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 14 NumberOfFragments, 189 HoareAnnotationTreeSize, 4 FomulaSimplifications, 168 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 505 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 10.0s InterpolantComputationTime, 115 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 107 ConstructedInterpolants, 12 QuantifiedInterpolants, 29667 SizeOfPredicates, 29 NumberOfNonLiveVariables, 270 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 49/140 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...