/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test24-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 12:02:38,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 12:02:38,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 12:02:38,739 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 12:02:38,740 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 12:02:38,741 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 12:02:38,743 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 12:02:38,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 12:02:38,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 12:02:38,758 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 12:02:38,761 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 12:02:38,763 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 12:02:38,763 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 12:02:38,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 12:02:38,767 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 12:02:38,768 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 12:02:38,769 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 12:02:38,770 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 12:02:38,772 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 12:02:38,776 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 12:02:38,782 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 12:02:38,785 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 12:02:38,787 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 12:02:38,787 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 12:02:38,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 12:02:38,800 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 12:02:38,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 12:02:38,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 12:02:38,803 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 [2020-07-17 12:02:38,842 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 12:02:38,842 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 12:02:38,846 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 12:02:38,847 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 12:02:38,847 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 12:02:38,847 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 12:02:38,848 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 12:02:38,848 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 12:02:38,848 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 12:02:38,848 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 12:02:38,848 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 12:02:38,849 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 12:02:38,849 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 12:02:38,849 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 12:02:38,851 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 12:02:38,851 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 12:02:38,852 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 12:02:38,852 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 12:02:38,852 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 12:02:38,852 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 12:02:38,853 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 12:02:38,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 12:02:38,853 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 12:02:38,853 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 12:02:38,853 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 12:02:38,854 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 12:02:38,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 12:02:38,854 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 12:02:38,857 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 12:02:38,858 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 12:02:39,147 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 12:02:39,160 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 12:02:39,164 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 12:02:39,165 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 12:02:39,165 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 12:02:39,166 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test24-1.c [2020-07-17 12:02:39,229 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63d2a4995/f5caba12669e4729993d5b9c682ef72f/FLAGaa4a2bebd [2020-07-17 12:02:39,622 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 12:02:39,623 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test24-1.c [2020-07-17 12:02:39,629 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63d2a4995/f5caba12669e4729993d5b9c682ef72f/FLAGaa4a2bebd [2020-07-17 12:02:40,005 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63d2a4995/f5caba12669e4729993d5b9c682ef72f [2020-07-17 12:02:40,016 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 12:02:40,019 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 12:02:40,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 12:02:40,020 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 12:02:40,024 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 12:02:40,025 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:02:40" (1/1) ... [2020-07-17 12:02:40,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c858163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:02:40, skipping insertion in model container [2020-07-17 12:02:40,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:02:40" (1/1) ... [2020-07-17 12:02:40,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 12:02:40,053 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 12:02:40,224 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:02:40,237 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 12:02:40,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:02:40,274 INFO L208 MainTranslator]: Completed translation [2020-07-17 12:02:40,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:02:40 WrapperNode [2020-07-17 12:02:40,275 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 12:02:40,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 12:02:40,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 12:02:40,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 12:02:40,382 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:02:40" (1/1) ... [2020-07-17 12:02:40,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:02:40" (1/1) ... [2020-07-17 12:02:40,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:02:40" (1/1) ... [2020-07-17 12:02:40,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:02:40" (1/1) ... [2020-07-17 12:02:40,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:02:40" (1/1) ... [2020-07-17 12:02:40,424 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:02:40" (1/1) ... [2020-07-17 12:02:40,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:02:40" (1/1) ... [2020-07-17 12:02:40,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 12:02:40,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 12:02:40,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 12:02:40,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 12:02:40,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:02:40" (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 [2020-07-17 12:02:40,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 12:02:40,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 12:02:40,534 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-07-17 12:02:40,534 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 12:02:40,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 12:02:40,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 12:02:40,535 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-17 12:02:40,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 12:02:40,536 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 12:02:40,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 12:02:40,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 12:02:40,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 12:02:40,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 12:02:40,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 12:02:40,776 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 12:02:40,776 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-17 12:02:40,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:02:40 BoogieIcfgContainer [2020-07-17 12:02:40,781 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 12:02:40,783 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 12:02:40,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 12:02:40,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 12:02:40,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 12:02:40" (1/3) ... [2020-07-17 12:02:40,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@744d1a51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:02:40, skipping insertion in model container [2020-07-17 12:02:40,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:02:40" (2/3) ... [2020-07-17 12:02:40,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@744d1a51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:02:40, skipping insertion in model container [2020-07-17 12:02:40,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:02:40" (3/3) ... [2020-07-17 12:02:40,795 INFO L109 eAbstractionObserver]: Analyzing ICFG test24-1.c [2020-07-17 12:02:40,811 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 12:02:40,827 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 12:02:40,865 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 12:02:40,927 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 12:02:40,927 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 12:02:40,928 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 12:02:40,928 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 12:02:40,928 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 12:02:40,928 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 12:02:40,928 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 12:02:40,928 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 12:02:40,976 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-07-17 12:02:40,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-17 12:02:40,990 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:02:40,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:02:40,996 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:02:41,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:02:41,003 INFO L82 PathProgramCache]: Analyzing trace with hash 149844724, now seen corresponding path program 1 times [2020-07-17 12:02:41,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:02:41,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690336341] [2020-07-17 12:02:41,014 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:02:41,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:41,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:41,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:02:41,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690336341] [2020-07-17 12:02:41,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:02:41,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 12:02:41,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769758565] [2020-07-17 12:02:41,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 12:02:41,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:02:41,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 12:02:41,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 12:02:41,255 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2020-07-17 12:02:41,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:02:41,361 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2020-07-17 12:02:41,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 12:02:41,363 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-07-17 12:02:41,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:02:41,375 INFO L225 Difference]: With dead ends: 35 [2020-07-17 12:02:41,376 INFO L226 Difference]: Without dead ends: 17 [2020-07-17 12:02:41,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 12:02:41,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-07-17 12:02:41,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-07-17 12:02:41,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-07-17 12:02:41,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-07-17 12:02:41,421 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2020-07-17 12:02:41,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:02:41,421 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-07-17 12:02:41,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 12:02:41,421 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-07-17 12:02:41,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-17 12:02:41,422 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:02:41,422 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:02:41,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 12:02:41,423 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:02:41,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:02:41,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1249419983, now seen corresponding path program 1 times [2020-07-17 12:02:41,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:02:41,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297216262] [2020-07-17 12:02:41,425 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:02:41,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:41,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:41,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:41,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:02:41,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297216262] [2020-07-17 12:02:41,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:02:41,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 12:02:41,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985346091] [2020-07-17 12:02:41,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 12:02:41,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:02:41,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 12:02:41,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 12:02:41,585 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 5 states. [2020-07-17 12:02:41,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:02:41,661 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-07-17 12:02:41,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 12:02:41,662 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-07-17 12:02:41,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:02:41,664 INFO L225 Difference]: With dead ends: 27 [2020-07-17 12:02:41,664 INFO L226 Difference]: Without dead ends: 19 [2020-07-17 12:02:41,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-17 12:02:41,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-07-17 12:02:41,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-07-17 12:02:41,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-17 12:02:41,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-07-17 12:02:41,678 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2020-07-17 12:02:41,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:02:41,679 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-07-17 12:02:41,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 12:02:41,679 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-07-17 12:02:41,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-17 12:02:41,682 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:02:41,683 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:02:41,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 12:02:41,684 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:02:41,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:02:41,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1840889772, now seen corresponding path program 1 times [2020-07-17 12:02:41,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:02:41,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430543004] [2020-07-17 12:02:41,686 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:02:41,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:41,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:41,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:41,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:02:41,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430543004] [2020-07-17 12:02:41,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940603992] [2020-07-17 12:02:41,876 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:02:41,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:41,935 INFO L264 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-17 12:02:41,944 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:02:42,040 INFO L384 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 [2020-07-17 12:02:42,041 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-17 12:02:42,055 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-17 12:02:42,058 INFO L544 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. [2020-07-17 12:02:42,058 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:56, output treesize:52 [2020-07-17 12:02:52,308 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-17 12:02:52,312 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-17 12:02:52,313 INFO L384 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 50 treesize of output 21 [2020-07-17 12:02:52,315 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-17 12:02:52,330 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-17 12:02:52,334 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-07-17 12:02:52,336 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:59, output treesize:30 [2020-07-17 12:02:54,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:02:54,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 12:02:54,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2020-07-17 12:02:54,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720359864] [2020-07-17 12:02:54,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-17 12:02:54,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:02:54,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-17 12:02:54,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=77, Unknown=6, NotChecked=0, Total=110 [2020-07-17 12:02:54,424 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 11 states. [2020-07-17 12:02:56,514 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 31 [2020-07-17 12:02:57,520 WARN L193 SmtUtils]: Spent 982.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2020-07-17 12:02:57,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:02:57,634 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-07-17 12:02:57,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-17 12:02:57,634 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2020-07-17 12:02:57,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:02:57,635 INFO L225 Difference]: With dead ends: 29 [2020-07-17 12:02:57,636 INFO L226 Difference]: Without dead ends: 21 [2020-07-17 12:02:57,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=62, Invalid=142, Unknown=6, NotChecked=0, Total=210 [2020-07-17 12:02:57,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-17 12:02:57,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-07-17 12:02:57,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-17 12:02:57,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-07-17 12:02:57,643 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2020-07-17 12:02:57,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:02:57,643 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-07-17 12:02:57,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-17 12:02:57,643 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-07-17 12:02:57,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-17 12:02:57,644 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:02:57,644 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:02:57,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-17 12:02:57,858 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:02:57,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:02:57,859 INFO L82 PathProgramCache]: Analyzing trace with hash -488804505, now seen corresponding path program 2 times [2020-07-17 12:02:57,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:02:57,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77310501] [2020-07-17 12:02:57,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:02:57,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:57,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:57,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:57,991 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:02:57,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77310501] [2020-07-17 12:02:57,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91255048] [2020-07-17 12:02:57,992 INFO L92 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 [2020-07-17 12:02:58,039 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-17 12:02:58,040 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-17 12:02:58,041 INFO L264 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 22 conjunts are in the unsatisfiable core [2020-07-17 12:02:58,044 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:02:58,059 INFO L384 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 25 treesize of output 21 [2020-07-17 12:02:58,060 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-17 12:02:58,071 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-17 12:02:58,071 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-17 12:02:58,072 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:53, output treesize:49 [2020-07-17 12:02:58,165 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-17 12:02:58,167 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-17 12:02:58,168 INFO L384 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 48 treesize of output 21 [2020-07-17 12:02:58,169 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-17 12:02:58,178 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-17 12:02:58,179 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-17 12:02:58,180 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:57, output treesize:30 [2020-07-17 12:02:59,692 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:02:59,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 12:02:59,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 13 [2020-07-17 12:02:59,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022675766] [2020-07-17 12:02:59,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-17 12:02:59,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:02:59,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-17 12:02:59,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=116, Unknown=1, NotChecked=0, Total=156 [2020-07-17 12:02:59,695 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 13 states. [2020-07-17 12:03:00,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:03:00,032 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-07-17 12:03:00,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-17 12:03:00,032 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 20 [2020-07-17 12:03:00,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:03:00,033 INFO L225 Difference]: With dead ends: 31 [2020-07-17 12:03:00,033 INFO L226 Difference]: Without dead ends: 23 [2020-07-17 12:03:00,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=101, Invalid=240, Unknown=1, NotChecked=0, Total=342 [2020-07-17 12:03:00,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-07-17 12:03:00,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-07-17 12:03:00,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-07-17 12:03:00,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-07-17 12:03:00,040 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2020-07-17 12:03:00,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:03:00,041 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-07-17 12:03:00,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-17 12:03:00,041 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-07-17 12:03:00,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-17 12:03:00,042 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:03:00,042 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:03:00,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:03:00,254 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:03:00,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:03:00,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1647043486, now seen corresponding path program 3 times [2020-07-17 12:03:00,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:03:00,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714265621] [2020-07-17 12:03:00,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:03:00,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:03:00,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:03:00,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:03:00,585 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-17 12:03:00,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714265621] [2020-07-17 12:03:00,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299476190] [2020-07-17 12:03:00,586 INFO L92 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 [2020-07-17 12:03:00,630 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-07-17 12:03:00,630 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-17 12:03:00,631 INFO L264 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 27 conjunts are in the unsatisfiable core [2020-07-17 12:03:00,634 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:03:00,646 INFO L384 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 25 treesize of output 21 [2020-07-17 12:03:00,647 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-17 12:03:00,655 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-17 12:03:00,656 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-17 12:03:00,656 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:38, output treesize:34 [2020-07-17 12:03:02,877 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_main_~#ad1~0.base_BEFORE_CALL_1| Int) (|v_main_~#ad1~0.offset_BEFORE_CALL_1| Int) (main_~pa~0.offset Int)) (and (= 0 (mod (+ (* |v_main_~#ad1~0.offset_BEFORE_CALL_1| 7) main_~pa~0.offset) 8)) (let ((.cse0 (div (+ (* |v_main_~#ad1~0.offset_BEFORE_CALL_1| (- 1)) main_~pa~0.offset) 8))) (= .cse0 (select (select |c_#memory_int| |v_main_~#ad1~0.base_BEFORE_CALL_1|) (+ |v_main_~#ad1~0.offset_BEFORE_CALL_1| (* .cse0 8))))))) is different from true [2020-07-17 12:03:13,131 WARN L193 SmtUtils]: Spent 10.20 s on a formula simplification. DAG size of input: 38 DAG size of output: 38 [2020-07-17 12:03:13,141 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-17 12:03:13,148 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-17 12:03:13,187 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-17 12:03:13,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 12:03:13,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2020-07-17 12:03:13,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357646381] [2020-07-17 12:03:13,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-17 12:03:13,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:03:13,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-17 12:03:13,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=233, Unknown=1, NotChecked=30, Total=306 [2020-07-17 12:03:13,199 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 18 states. [2020-07-17 12:03:17,678 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 32 [2020-07-17 12:03:23,816 WARN L193 SmtUtils]: Spent 4.08 s on a formula simplification that was a NOOP. DAG size: 48 [2020-07-17 12:03:23,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:03:23,938 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-07-17 12:03:23,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-17 12:03:23,939 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 22 [2020-07-17 12:03:23,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:03:23,939 INFO L225 Difference]: With dead ends: 23 [2020-07-17 12:03:23,939 INFO L226 Difference]: Without dead ends: 0 [2020-07-17 12:03:23,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 23.1s TimeCoverageRelationStatistics Valid=91, Invalid=416, Unknown=3, NotChecked=42, Total=552 [2020-07-17 12:03:23,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-17 12:03:23,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-17 12:03:23,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-17 12:03:23,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-17 12:03:23,942 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-07-17 12:03:23,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:03:23,942 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-17 12:03:23,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-17 12:03:23,942 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 12:03:23,942 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 12:03:24,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:03:24,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-17 12:03:24,241 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-17 12:03:24,242 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-07-17 12:03:24,242 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-17 12:03:24,242 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-17 12:03:24,242 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-17 12:03:24,242 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-17 12:03:24,242 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-17 12:03:24,242 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-07-17 12:03:24,243 INFO L268 CegarLoopResult]: For program point L29-1(lines 29 31) no Hoare annotation was computed. [2020-07-17 12:03:24,243 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 38) no Hoare annotation was computed. [2020-07-17 12:03:24,243 INFO L268 CegarLoopResult]: For program point L21(lines 21 32) no Hoare annotation was computed. [2020-07-17 12:03:24,243 INFO L268 CegarLoopResult]: For program point L21-2(lines 21 32) no Hoare annotation was computed. [2020-07-17 12:03:24,243 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 38) no Hoare annotation was computed. [2020-07-17 12:03:24,243 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 36) no Hoare annotation was computed. [2020-07-17 12:03:24,243 INFO L264 CegarLoopResult]: At program point L30(lines 15 38) the Hoare annotation is: false [2020-07-17 12:03:24,244 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 14 38) the Hoare annotation is: (= |#valid| |old(#valid)|) [2020-07-17 12:03:24,244 INFO L268 CegarLoopResult]: For program point L26-1(lines 26 28) no Hoare annotation was computed. [2020-07-17 12:03:24,244 INFO L264 CegarLoopResult]: At program point L26-3(lines 26 28) the Hoare annotation is: (and (let ((.cse0 (div (+ main_~pa~0.offset (* |main_~#ad1~0.offset| (- 1))) 8))) (= (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* .cse0 8) |main_~#ad1~0.offset|)) .cse0)) (= 0 (mod (+ main_~pa~0.offset (* |main_~#ad1~0.offset| 7)) 8)) (<= main_~i~0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset)) (= 0 |main_~#ad1~0.offset|) (= main_~pa~0.base |main_~#ad1~0.base|)) [2020-07-17 12:03:24,244 INFO L264 CegarLoopResult]: At program point L26-4(lines 26 28) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |main_~#ad1~0.base|))) (and (let ((.cse1 (div (+ main_~pa~0.offset (* |main_~#ad1~0.offset| (- 1))) 8))) (= (select .cse0 (+ (* .cse1 8) |main_~#ad1~0.offset|)) .cse1)) (= 0 (mod (+ main_~pa~0.offset (* |main_~#ad1~0.offset| 7)) 8)) (<= main_~i~0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset)) (= 0 |main_~#ad1~0.offset|) (= main_~i~0 (select .cse0 (+ (* main_~i~0 8) |main_~#ad1~0.offset|))) (= main_~pa~0.base |main_~#ad1~0.base|))) [2020-07-17 12:03:24,244 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 9 12) the Hoare annotation is: true [2020-07-17 12:03:24,244 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 9 12) no Hoare annotation was computed. [2020-07-17 12:03:24,245 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 9 12) no Hoare annotation was computed. [2020-07-17 12:03:24,253 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-17 12:03:24,254 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-17 12:03:24,259 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-17 12:03:24,259 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-17 12:03:24,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 12:03:24 BoogieIcfgContainer [2020-07-17 12:03:24,262 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 12:03:24,264 INFO L168 Benchmark]: Toolchain (without parser) took 44245.95 ms. Allocated memory was 137.4 MB in the beginning and 246.9 MB in the end (delta: 109.6 MB). Free memory was 100.8 MB in the beginning and 110.3 MB in the end (delta: -9.5 MB). Peak memory consumption was 100.1 MB. Max. memory is 7.1 GB. [2020-07-17 12:03:24,265 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 137.4 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-17 12:03:24,265 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.80 ms. Allocated memory is still 137.4 MB. Free memory was 100.4 MB in the beginning and 90.2 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-07-17 12:03:24,266 INFO L168 Benchmark]: Boogie Preprocessor took 162.00 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 90.2 MB in the beginning and 179.8 MB in the end (delta: -89.7 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-07-17 12:03:24,267 INFO L168 Benchmark]: RCFGBuilder took 342.68 ms. Allocated memory is still 201.9 MB. Free memory was 179.8 MB in the beginning and 165.5 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2020-07-17 12:03:24,268 INFO L168 Benchmark]: TraceAbstraction took 43479.28 ms. Allocated memory was 201.9 MB in the beginning and 246.9 MB in the end (delta: 45.1 MB). Free memory was 164.9 MB in the beginning and 110.3 MB in the end (delta: 54.5 MB). Peak memory consumption was 99.6 MB. Max. memory is 7.1 GB. [2020-07-17 12:03:24,272 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 137.4 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 255.80 ms. Allocated memory is still 137.4 MB. Free memory was 100.4 MB in the beginning and 90.2 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 162.00 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 90.2 MB in the beginning and 179.8 MB in the end (delta: -89.7 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 342.68 ms. Allocated memory is still 201.9 MB. Free memory was 179.8 MB in the beginning and 165.5 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 43479.28 ms. Allocated memory was 201.9 MB in the beginning and 246.9 MB in the end (delta: 45.1 MB). Free memory was 164.9 MB in the beginning and 110.3 MB in the end (delta: 54.5 MB). Peak memory consumption was 99.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 36]: 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: 26]: Loop Invariant [2020-07-17 12:03:24,280 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-17 12:03:24,280 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-17 12:03:24,281 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-17 12:03:24,281 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((unknown-#memory_int-unknown[ad1][(pa + ad1 * -1) / 8 * 8 + ad1] == (pa + ad1 * -1) / 8 && 0 == (pa + ad1 * 7) % 8) && i <= unknown-#memory_int-unknown[pa][pa]) && 0 == ad1) && pa == ad1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 43.2s, OverallIterations: 5, TraceHistogramMax: 4, AutomataDifference: 14.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 64 SDtfs, 49 SDslu, 162 SDs, 0 SdLazy, 247 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 124 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 40.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 8 LocationsWithAnnotation, 12 PreInvPairs, 16 NumberOfFragments, 120 HoareAnnotationTreeSize, 12 FomulaSimplifications, 366 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 87 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 27.4s InterpolantComputationTime, 151 NumberOfCodeBlocks, 149 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 143 ConstructedInterpolants, 10 QuantifiedInterpolants, 29498 SizeOfPredicates, 24 NumberOfNonLiveVariables, 265 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 13/40 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...