/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/terminator_02-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 23:10:53,999 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 23:10:54,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 23:10:54,046 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 23:10:54,047 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 23:10:54,058 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 23:10:54,061 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 23:10:54,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 23:10:54,066 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 23:10:54,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 23:10:54,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 23:10:54,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 23:10:54,074 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 23:10:54,077 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 23:10:54,080 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 23:10:54,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 23:10:54,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 23:10:54,085 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 23:10:54,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 23:10:54,095 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 23:10:54,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 23:10:54,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 23:10:54,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 23:10:54,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 23:10:54,107 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 23:10:54,107 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 23:10:54,107 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 23:10:54,110 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 23:10:54,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 23:10:54,113 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 23:10:54,113 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 23:10:54,114 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 23:10:54,116 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 23:10:54,117 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 23:10:54,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 23:10:54,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 23:10:54,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 23:10:54,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 23:10:54,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 23:10:54,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 23:10:54,122 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 23:10:54,123 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 23:10:54,144 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 23:10:54,144 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 23:10:54,146 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 23:10:54,146 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 23:10:54,147 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 23:10:54,147 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 23:10:54,147 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 23:10:54,147 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 23:10:54,148 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 23:10:54,148 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 23:10:54,149 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 23:10:54,149 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 23:10:54,149 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 23:10:54,150 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 23:10:54,150 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 23:10:54,150 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 23:10:54,151 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 23:10:54,151 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 23:10:54,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 23:10:54,151 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 23:10:54,152 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 23:10:54,152 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 23:10:54,152 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-09-04 23:10:54,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 23:10:54,604 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 23:10:54,610 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 23:10:54,612 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 23:10:54,613 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 23:10:54,614 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_02-2.c [2020-09-04 23:10:54,691 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5dda07583/124a114fb47142c9a33ffb09b980ed4c/FLAGf5906682a [2020-09-04 23:10:55,282 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 23:10:55,283 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/terminator_02-2.c [2020-09-04 23:10:55,290 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5dda07583/124a114fb47142c9a33ffb09b980ed4c/FLAGf5906682a [2020-09-04 23:10:55,610 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5dda07583/124a114fb47142c9a33ffb09b980ed4c [2020-09-04 23:10:55,625 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 23:10:55,627 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 23:10:55,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 23:10:55,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 23:10:55,633 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 23:10:55,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:10:55" (1/1) ... [2020-09-04 23:10:55,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13d07a3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:55, skipping insertion in model container [2020-09-04 23:10:55,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:10:55" (1/1) ... [2020-09-04 23:10:55,649 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 23:10:55,679 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 23:10:55,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:10:55,899 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 23:10:55,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:10:55,938 INFO L208 MainTranslator]: Completed translation [2020-09-04 23:10:55,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:55 WrapperNode [2020-09-04 23:10:55,938 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 23:10:55,939 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 23:10:55,939 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 23:10:55,939 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 23:10:55,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:55" (1/1) ... [2020-09-04 23:10:55,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:55" (1/1) ... [2020-09-04 23:10:55,960 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:55" (1/1) ... [2020-09-04 23:10:55,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:55" (1/1) ... [2020-09-04 23:10:55,964 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:55" (1/1) ... [2020-09-04 23:10:56,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:55" (1/1) ... [2020-09-04 23:10:56,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:55" (1/1) ... [2020-09-04 23:10:56,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 23:10:56,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 23:10:56,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 23:10:56,065 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 23:10:56,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 23:10:56,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 23:10:56,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 23:10:56,156 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 23:10:56,156 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 23:10:56,156 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 23:10:56,156 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 23:10:56,157 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 23:10:56,157 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 23:10:56,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 23:10:56,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 23:10:56,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-04 23:10:56,158 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 23:10:56,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 23:10:56,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 23:10:56,494 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 23:10:56,494 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 23:10:56,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:10:56 BoogieIcfgContainer [2020-09-04 23:10:56,511 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 23:10:56,520 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 23:10:56,520 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 23:10:56,524 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 23:10:56,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 11:10:55" (1/3) ... [2020-09-04 23:10:56,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@126f4612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:10:56, skipping insertion in model container [2020-09-04 23:10:56,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:55" (2/3) ... [2020-09-04 23:10:56,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@126f4612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:10:56, skipping insertion in model container [2020-09-04 23:10:56,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:10:56" (3/3) ... [2020-09-04 23:10:56,531 INFO L109 eAbstractionObserver]: Analyzing ICFG terminator_02-2.c [2020-09-04 23:10:56,544 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 23:10:56,554 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 23:10:56,576 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 23:10:56,604 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 23:10:56,604 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 23:10:56,605 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 23:10:56,605 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 23:10:56,605 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 23:10:56,605 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 23:10:56,606 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 23:10:56,606 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 23:10:56,624 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-09-04 23:10:56,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-04 23:10:56,637 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:10:56,638 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:10:56,639 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:10:56,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:10:56,645 INFO L82 PathProgramCache]: Analyzing trace with hash 664980376, now seen corresponding path program 1 times [2020-09-04 23:10:56,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:10:56,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295556447] [2020-09-04 23:10:56,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:10:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:56,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:10:56,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:56,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:10:56,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295556447] [2020-09-04 23:10:56,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:10:56,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-04 23:10:56,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785236437] [2020-09-04 23:10:56,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-04 23:10:56,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:10:56,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-04 23:10:56,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-04 23:10:56,847 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2020-09-04 23:10:56,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:10:56,884 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2020-09-04 23:10:56,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-04 23:10:56,886 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2020-09-04 23:10:56,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:10:56,897 INFO L225 Difference]: With dead ends: 55 [2020-09-04 23:10:56,897 INFO L226 Difference]: Without dead ends: 32 [2020-09-04 23:10:56,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-04 23:10:56,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-04 23:10:56,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-09-04 23:10:56,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-04 23:10:56,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2020-09-04 23:10:56,957 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 19 [2020-09-04 23:10:56,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:10:56,958 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2020-09-04 23:10:56,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-04 23:10:56,959 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2020-09-04 23:10:56,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-04 23:10:56,959 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:10:56,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:10:56,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 23:10:56,961 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:10:56,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:10:56,961 INFO L82 PathProgramCache]: Analyzing trace with hash 645586435, now seen corresponding path program 1 times [2020-09-04 23:10:56,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:10:56,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862185218] [2020-09-04 23:10:56,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:10:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:57,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:10:57,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:57,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:10:57,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862185218] [2020-09-04 23:10:57,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:10:57,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 23:10:57,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573110210] [2020-09-04 23:10:57,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 23:10:57,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:10:57,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 23:10:57,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 23:10:57,194 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 6 states. [2020-09-04 23:10:57,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:10:57,315 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2020-09-04 23:10:57,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 23:10:57,315 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-09-04 23:10:57,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:10:57,317 INFO L225 Difference]: With dead ends: 38 [2020-09-04 23:10:57,317 INFO L226 Difference]: Without dead ends: 33 [2020-09-04 23:10:57,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-04 23:10:57,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-04 23:10:57,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-09-04 23:10:57,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-04 23:10:57,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-09-04 23:10:57,329 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 19 [2020-09-04 23:10:57,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:10:57,330 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-09-04 23:10:57,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 23:10:57,330 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-09-04 23:10:57,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-04 23:10:57,331 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:10:57,332 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:10:57,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 23:10:57,332 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:10:57,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:10:57,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1512571145, now seen corresponding path program 1 times [2020-09-04 23:10:57,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:10:57,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212017817] [2020-09-04 23:10:57,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:10:57,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:57,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:10:57,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:57,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-04 23:10:57,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212017817] [2020-09-04 23:10:57,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:10:57,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 23:10:57,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696367813] [2020-09-04 23:10:57,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 23:10:57,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:10:57,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 23:10:57,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 23:10:57,430 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 5 states. [2020-09-04 23:10:57,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:10:57,483 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2020-09-04 23:10:57,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 23:10:57,484 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-09-04 23:10:57,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:10:57,484 INFO L225 Difference]: With dead ends: 33 [2020-09-04 23:10:57,484 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 23:10:57,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 23:10:57,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 23:10:57,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 23:10:57,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 23:10:57,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 23:10:57,487 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2020-09-04 23:10:57,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:10:57,487 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 23:10:57,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 23:10:57,487 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 23:10:57,488 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 23:10:57,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 23:10:57,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 23:10:57,646 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-04 23:10:57,646 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-09-04 23:10:57,646 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-09-04 23:10:57,647 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 23:10:57,647 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 23:10:57,647 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-09-04 23:10:57,647 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-09-04 23:10:57,648 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-04 23:10:57,648 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-09-04 23:10:57,648 INFO L268 CegarLoopResult]: For program point L5-3(lines 4 6) no Hoare annotation was computed. [2020-09-04 23:10:57,648 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-09-04 23:10:57,649 INFO L264 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (< 100 main_~z~0) [2020-09-04 23:10:57,649 INFO L264 CegarLoopResult]: At program point L31-1(line 31) the Hoare annotation is: (< 100 main_~z~0) [2020-09-04 23:10:57,649 INFO L271 CegarLoopResult]: At program point L31-2(line 31) the Hoare annotation is: true [2020-09-04 23:10:57,649 INFO L264 CegarLoopResult]: At program point L27(lines 27 32) the Hoare annotation is: (< 100 main_~z~0) [2020-09-04 23:10:57,649 INFO L271 CegarLoopResult]: At program point L27-2(lines 24 33) the Hoare annotation is: true [2020-09-04 23:10:57,650 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 16 38) the Hoare annotation is: true [2020-09-04 23:10:57,650 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (< 100 main_~z~0) [2020-09-04 23:10:57,650 INFO L271 CegarLoopResult]: At program point L23-1(line 23) the Hoare annotation is: true [2020-09-04 23:10:57,650 INFO L271 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: true [2020-09-04 23:10:57,651 INFO L271 CegarLoopResult]: At program point L19-1(line 19) the Hoare annotation is: true [2020-09-04 23:10:57,651 INFO L271 CegarLoopResult]: At program point L19-2(line 19) the Hoare annotation is: true [2020-09-04 23:10:57,651 INFO L264 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (< 100 main_~z~0) [2020-09-04 23:10:57,651 INFO L264 CegarLoopResult]: At program point L28-1(line 28) the Hoare annotation is: (< 100 main_~z~0) [2020-09-04 23:10:57,652 INFO L264 CegarLoopResult]: At program point L28-2(line 28) the Hoare annotation is: (< 100 main_~z~0) [2020-09-04 23:10:57,652 INFO L264 CegarLoopResult]: At program point L24-2(lines 24 33) the Hoare annotation is: (or (<= main_~z~0 100) (< 99 main_~x~0)) [2020-09-04 23:10:57,652 INFO L271 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: true [2020-09-04 23:10:57,653 INFO L271 CegarLoopResult]: At program point L20-1(line 20) the Hoare annotation is: true [2020-09-04 23:10:57,653 INFO L271 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: true [2020-09-04 23:10:57,653 INFO L271 CegarLoopResult]: At program point L21-1(line 21) the Hoare annotation is: true [2020-09-04 23:10:57,653 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 16 38) the Hoare annotation is: true [2020-09-04 23:10:57,654 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (< 100 main_~z~0) [2020-09-04 23:10:57,654 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 16 38) the Hoare annotation is: true [2020-09-04 23:10:57,654 INFO L264 CegarLoopResult]: At program point L30-1(line 30) the Hoare annotation is: (< 100 main_~z~0) [2020-09-04 23:10:57,654 INFO L264 CegarLoopResult]: At program point L30-2(line 30) the Hoare annotation is: (< 100 main_~z~0) [2020-09-04 23:10:57,655 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (< 100 main_~z~0) [2020-09-04 23:10:57,655 INFO L264 CegarLoopResult]: At program point L26-1(line 26) the Hoare annotation is: (< 100 main_~z~0) [2020-09-04 23:10:57,655 INFO L271 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: true [2020-09-04 23:10:57,655 INFO L271 CegarLoopResult]: At program point L22-1(line 22) the Hoare annotation is: true [2020-09-04 23:10:57,656 INFO L271 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: true [2020-09-04 23:10:57,656 INFO L271 CegarLoopResult]: At program point L18-1(line 18) the Hoare annotation is: true [2020-09-04 23:10:57,656 INFO L271 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: true [2020-09-04 23:10:57,656 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 7 12) the Hoare annotation is: true [2020-09-04 23:10:57,657 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 7 12) the Hoare annotation is: true [2020-09-04 23:10:57,657 INFO L264 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-09-04 23:10:57,657 INFO L264 CegarLoopResult]: At program point L8(lines 8 10) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-09-04 23:10:57,657 INFO L271 CegarLoopResult]: At program point L8-2(lines 7 12) the Hoare annotation is: true [2020-09-04 23:10:57,658 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-09-04 23:10:57,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 11:10:57 BoogieIcfgContainer [2020-09-04 23:10:57,673 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 23:10:57,677 INFO L168 Benchmark]: Toolchain (without parser) took 2048.96 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 104.1 MB in the beginning and 103.4 MB in the end (delta: 671.7 kB). Peak memory consumption was 64.6 MB. Max. memory is 7.1 GB. [2020-09-04 23:10:57,678 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 141.0 MB. Free memory was 122.3 MB in the beginning and 121.9 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-09-04 23:10:57,679 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.62 ms. Allocated memory is still 141.0 MB. Free memory was 104.1 MB in the beginning and 94.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-04 23:10:57,681 INFO L168 Benchmark]: Boogie Preprocessor took 125.46 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 94.3 MB in the beginning and 183.4 MB in the end (delta: -89.2 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-09-04 23:10:57,682 INFO L168 Benchmark]: RCFGBuilder took 446.37 ms. Allocated memory is still 205.0 MB. Free memory was 183.4 MB in the beginning and 168.8 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2020-09-04 23:10:57,683 INFO L168 Benchmark]: TraceAbstraction took 1153.55 ms. Allocated memory is still 205.0 MB. Free memory was 167.9 MB in the beginning and 103.4 MB in the end (delta: 64.5 MB). Peak memory consumption was 64.5 MB. Max. memory is 7.1 GB. [2020-09-04 23:10:57,687 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 141.0 MB. Free memory was 122.3 MB in the beginning and 121.9 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 310.62 ms. Allocated memory is still 141.0 MB. Free memory was 104.1 MB in the beginning and 94.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.46 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 94.3 MB in the beginning and 183.4 MB in the end (delta: -89.2 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 446.37 ms. Allocated memory is still 205.0 MB. Free memory was 183.4 MB in the beginning and 168.8 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1153.55 ms. Allocated memory is still 205.0 MB. Free memory was 167.9 MB in the beginning and 103.4 MB in the end (delta: 64.5 MB). Peak memory consumption was 64.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: 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: 24]: Loop Invariant Derived loop invariant: 1 - ProcedureContractResult [Line: 16]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 7]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 106 SDtfs, 15 SDslu, 165 SDs, 0 SdLazy, 48 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 43 LocationsWithAnnotation, 55 PreInvPairs, 67 NumberOfFragments, 84 HoareAnnotationTreeSize, 55 FomulaSimplifications, 7 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 43 FomulaSimplificationsInter, 5 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 1984 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 1/1 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...