/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_1b.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 11:21:53,222 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 11:21:53,225 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 11:21:53,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 11:21:53,244 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 11:21:53,246 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 11:21:53,248 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 11:21:53,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 11:21:53,261 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 11:21:53,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 11:21:53,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 11:21:53,264 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 11:21:53,264 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 11:21:53,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 11:21:53,266 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 11:21:53,267 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 11:21:53,268 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 11:21:53,269 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 11:21:53,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 11:21:53,272 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 11:21:53,273 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 11:21:53,274 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 11:21:53,275 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 11:21:53,275 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 11:21:53,278 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 11:21:53,285 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 11:21:53,285 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 11:21:53,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 11:21:53,287 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 [2020-07-20 11:21:53,302 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 11:21:53,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 11:21:53,303 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 11:21:53,303 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 11:21:53,304 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 11:21:53,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 11:21:53,304 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 11:21:53,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 11:21:53,304 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 11:21:53,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 11:21:53,305 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 11:21:53,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 11:21:53,305 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 11:21:53,305 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 11:21:53,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 11:21:53,306 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 11:21:53,306 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 11:21:53,306 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 11:21:53,306 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 11:21:53,307 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 11:21:53,307 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 11:21:53,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:21:53,307 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 11:21:53,307 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 11:21:53,308 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 11:21:53,308 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 11:21:53,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:21:53,308 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 11:21:53,308 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 11:21:53,308 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-20 11:21:53,610 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 11:21:53,624 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 11:21:53,627 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 11:21:53,629 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 11:21:53,629 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 11:21:53,630 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_1b.cil.c [2020-07-20 11:21:53,716 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/379fa996a/dccce15db6da48c384a4e678f7941285/FLAGff8a15431 [2020-07-20 11:21:54,257 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 11:21:54,258 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ssh-simplified/s3_srvr_1b.cil.c [2020-07-20 11:21:54,267 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/379fa996a/dccce15db6da48c384a4e678f7941285/FLAGff8a15431 [2020-07-20 11:21:54,592 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/379fa996a/dccce15db6da48c384a4e678f7941285 [2020-07-20 11:21:54,603 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 11:21:54,606 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 11:21:54,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 11:21:54,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 11:21:54,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 11:21:54,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:21:54" (1/1) ... [2020-07-20 11:21:54,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39cfa74d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:21:54, skipping insertion in model container [2020-07-20 11:21:54,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:21:54" (1/1) ... [2020-07-20 11:21:54,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 11:21:54,645 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 11:21:54,840 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:21:54,844 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 11:21:54,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:21:54,877 INFO L208 MainTranslator]: Completed translation [2020-07-20 11:21:54,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:21:54 WrapperNode [2020-07-20 11:21:54,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 11:21:54,878 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 11:21:54,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 11:21:54,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 11:21:54,889 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:21:54" (1/1) ... [2020-07-20 11:21:54,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:21:54" (1/1) ... [2020-07-20 11:21:54,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:21:54" (1/1) ... [2020-07-20 11:21:54,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:21:54" (1/1) ... [2020-07-20 11:21:54,988 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:21:54" (1/1) ... [2020-07-20 11:21:54,994 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:21:54" (1/1) ... [2020-07-20 11:21:54,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:21:54" (1/1) ... [2020-07-20 11:21:54,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 11:21:54,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 11:21:54,997 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 11:21:54,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 11:21:54,998 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:21:54" (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 [2020-07-20 11:21:55,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 11:21:55,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 11:21:55,077 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 11:21:55,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 11:21:55,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-20 11:21:55,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 11:21:55,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-07-20 11:21:55,077 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 11:21:55,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 11:21:55,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 11:21:55,306 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 11:21:55,307 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 11:21:55,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:21:55 BoogieIcfgContainer [2020-07-20 11:21:55,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 11:21:55,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 11:21:55,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 11:21:55,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 11:21:55,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:21:54" (1/3) ... [2020-07-20 11:21:55,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dbbda79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:21:55, skipping insertion in model container [2020-07-20 11:21:55,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:21:54" (2/3) ... [2020-07-20 11:21:55,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dbbda79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:21:55, skipping insertion in model container [2020-07-20 11:21:55,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:21:55" (3/3) ... [2020-07-20 11:21:55,320 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_1b.cil.c [2020-07-20 11:21:55,331 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 11:21:55,340 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 11:21:55,357 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 11:21:55,386 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 11:21:55,387 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 11:21:55,387 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 11:21:55,387 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 11:21:55,387 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 11:21:55,388 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 11:21:55,388 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 11:21:55,388 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 11:21:55,417 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-07-20 11:21:55,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-07-20 11:21:55,425 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:21:55,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:21:55,426 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:21:55,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:21:55,436 INFO L82 PathProgramCache]: Analyzing trace with hash -2134687016, now seen corresponding path program 1 times [2020-07-20 11:21:55,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:21:55,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128287359] [2020-07-20 11:21:55,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:21:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:21:55,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 11:21:55,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:21:55,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:21:55,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:21:55,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128287359] [2020-07-20 11:21:55,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:21:55,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:21:55,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890198427] [2020-07-20 11:21:55,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:21:55,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:21:55,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:21:55,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:21:55,631 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2020-07-20 11:21:55,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:21:55,728 INFO L93 Difference]: Finished difference Result 70 states and 116 transitions. [2020-07-20 11:21:55,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:21:55,730 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-07-20 11:21:55,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:21:55,742 INFO L225 Difference]: With dead ends: 70 [2020-07-20 11:21:55,743 INFO L226 Difference]: Without dead ends: 39 [2020-07-20 11:21:55,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:21:55,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-07-20 11:21:55,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-07-20 11:21:55,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-20 11:21:55,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 55 transitions. [2020-07-20 11:21:55,794 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 55 transitions. Word has length 8 [2020-07-20 11:21:55,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:21:55,795 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 55 transitions. [2020-07-20 11:21:55,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:21:55,795 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 55 transitions. [2020-07-20 11:21:55,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-20 11:21:55,796 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:21:55,797 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:21:56,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:21:56,014 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:21:56,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:21:56,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1966827798, now seen corresponding path program 1 times [2020-07-20 11:21:56,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:21:56,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312618612] [2020-07-20 11:21:56,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:21:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:21:56,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 11:21:56,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:21:56,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:21:56,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:21:56,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312618612] [2020-07-20 11:21:56,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:21:56,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:21:56,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499706717] [2020-07-20 11:21:56,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:21:56,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:21:56,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:21:56,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:21:56,059 INFO L87 Difference]: Start difference. First operand 39 states and 55 transitions. Second operand 3 states. [2020-07-20 11:21:56,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:21:56,138 INFO L93 Difference]: Finished difference Result 73 states and 110 transitions. [2020-07-20 11:21:56,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:21:56,139 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-07-20 11:21:56,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:21:56,142 INFO L225 Difference]: With dead ends: 73 [2020-07-20 11:21:56,143 INFO L226 Difference]: Without dead ends: 55 [2020-07-20 11:21:56,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:21:56,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-07-20 11:21:56,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-07-20 11:21:56,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-07-20 11:21:56,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 78 transitions. [2020-07-20 11:21:56,157 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 78 transitions. Word has length 13 [2020-07-20 11:21:56,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:21:56,158 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 78 transitions. [2020-07-20 11:21:56,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:21:56,158 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 78 transitions. [2020-07-20 11:21:56,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-20 11:21:56,159 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:21:56,160 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:21:56,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:21:56,369 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:21:56,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:21:56,370 INFO L82 PathProgramCache]: Analyzing trace with hash 280007728, now seen corresponding path program 1 times [2020-07-20 11:21:56,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:21:56,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212193680] [2020-07-20 11:21:56,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:21:56,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:21:56,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 11:21:56,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:21:56,421 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-20 11:21:56,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:21:56,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212193680] [2020-07-20 11:21:56,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:21:56,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:21:56,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697093918] [2020-07-20 11:21:56,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:21:56,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:21:56,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:21:56,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:21:56,425 INFO L87 Difference]: Start difference. First operand 55 states and 78 transitions. Second operand 3 states. [2020-07-20 11:21:56,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:21:56,506 INFO L93 Difference]: Finished difference Result 107 states and 157 transitions. [2020-07-20 11:21:56,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:21:56,507 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-07-20 11:21:56,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:21:56,508 INFO L225 Difference]: With dead ends: 107 [2020-07-20 11:21:56,509 INFO L226 Difference]: Without dead ends: 73 [2020-07-20 11:21:56,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:21:56,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-07-20 11:21:56,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2020-07-20 11:21:56,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-07-20 11:21:56,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 103 transitions. [2020-07-20 11:21:56,523 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 103 transitions. Word has length 20 [2020-07-20 11:21:56,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:21:56,524 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 103 transitions. [2020-07-20 11:21:56,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:21:56,524 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 103 transitions. [2020-07-20 11:21:56,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-20 11:21:56,525 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:21:56,525 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:21:56,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:21:56,740 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:21:56,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:21:56,741 INFO L82 PathProgramCache]: Analyzing trace with hash 885328029, now seen corresponding path program 1 times [2020-07-20 11:21:56,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:21:56,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792689461] [2020-07-20 11:21:56,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) [2020-07-20 11:21:56,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:21:56,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 11:21:56,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:21:56,795 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-20 11:21:56,795 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:21:56,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [792689461] [2020-07-20 11:21:56,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:21:56,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:21:56,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554882609] [2020-07-20 11:21:56,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:21:56,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:21:56,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:21:56,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:21:56,798 INFO L87 Difference]: Start difference. First operand 71 states and 103 transitions. Second operand 3 states. [2020-07-20 11:21:56,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:21:56,846 INFO L93 Difference]: Finished difference Result 141 states and 205 transitions. [2020-07-20 11:21:56,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:21:56,847 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-07-20 11:21:56,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:21:56,848 INFO L225 Difference]: With dead ends: 141 [2020-07-20 11:21:56,848 INFO L226 Difference]: Without dead ends: 61 [2020-07-20 11:21:56,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:21:56,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-07-20 11:21:56,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2020-07-20 11:21:56,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-20 11:21:56,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 75 transitions. [2020-07-20 11:21:56,860 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 75 transitions. Word has length 23 [2020-07-20 11:21:56,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:21:56,861 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 75 transitions. [2020-07-20 11:21:56,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:21:56,861 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 75 transitions. [2020-07-20 11:21:56,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-20 11:21:56,862 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:21:56,863 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:21:57,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:21:57,080 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:21:57,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:21:57,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1155086362, now seen corresponding path program 1 times [2020-07-20 11:21:57,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:21:57,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256813067] [2020-07-20 11:21:57,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:21:57,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:21:57,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 11:21:57,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:21:57,143 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-07-20 11:21:57,143 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:21:57,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256813067] [2020-07-20 11:21:57,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:21:57,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:21:57,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362290366] [2020-07-20 11:21:57,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:21:57,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:21:57,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:21:57,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:21:57,146 INFO L87 Difference]: Start difference. First operand 59 states and 75 transitions. Second operand 3 states. [2020-07-20 11:21:57,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:21:57,217 INFO L93 Difference]: Finished difference Result 73 states and 93 transitions. [2020-07-20 11:21:57,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:21:57,218 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-07-20 11:21:57,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:21:57,220 INFO L225 Difference]: With dead ends: 73 [2020-07-20 11:21:57,220 INFO L226 Difference]: Without dead ends: 71 [2020-07-20 11:21:57,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:21:57,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-07-20 11:21:57,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-07-20 11:21:57,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-07-20 11:21:57,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 91 transitions. [2020-07-20 11:21:57,258 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 91 transitions. Word has length 37 [2020-07-20 11:21:57,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:21:57,259 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 91 transitions. [2020-07-20 11:21:57,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:21:57,259 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 91 transitions. [2020-07-20 11:21:57,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-20 11:21:57,261 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:21:57,261 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:21:57,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:21:57,463 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:21:57,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:21:57,463 INFO L82 PathProgramCache]: Analyzing trace with hash 970856213, now seen corresponding path program 1 times [2020-07-20 11:21:57,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:21:57,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044636179] [2020-07-20 11:21:57,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:21:57,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:21:57,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 11:21:57,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:21:57,525 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-07-20 11:21:57,525 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:21:57,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044636179] [2020-07-20 11:21:57,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:21:57,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:21:57,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879675981] [2020-07-20 11:21:57,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:21:57,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:21:57,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:21:57,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:21:57,528 INFO L87 Difference]: Start difference. First operand 71 states and 91 transitions. Second operand 3 states. [2020-07-20 11:21:57,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:21:57,579 INFO L93 Difference]: Finished difference Result 145 states and 182 transitions. [2020-07-20 11:21:57,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:21:57,580 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-07-20 11:21:57,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:21:57,581 INFO L225 Difference]: With dead ends: 145 [2020-07-20 11:21:57,581 INFO L226 Difference]: Without dead ends: 91 [2020-07-20 11:21:57,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:21:57,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-07-20 11:21:57,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-07-20 11:21:57,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-07-20 11:21:57,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 111 transitions. [2020-07-20 11:21:57,593 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 111 transitions. Word has length 46 [2020-07-20 11:21:57,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:21:57,594 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 111 transitions. [2020-07-20 11:21:57,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:21:57,594 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 111 transitions. [2020-07-20 11:21:57,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-07-20 11:21:57,596 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:21:57,596 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:21:57,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:21:57,806 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:21:57,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:21:57,807 INFO L82 PathProgramCache]: Analyzing trace with hash 73406346, now seen corresponding path program 1 times [2020-07-20 11:21:57,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:21:57,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752340605] [2020-07-20 11:21:57,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:21:57,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:21:57,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 11:21:57,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:21:57,867 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-07-20 11:21:57,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:21:57,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752340605] [2020-07-20 11:21:57,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:21:57,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:21:57,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719341259] [2020-07-20 11:21:57,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:21:57,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:21:57,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:21:57,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:21:57,874 INFO L87 Difference]: Start difference. First operand 91 states and 111 transitions. Second operand 3 states. [2020-07-20 11:21:57,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:21:57,900 INFO L93 Difference]: Finished difference Result 139 states and 164 transitions. [2020-07-20 11:21:57,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:21:57,901 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-07-20 11:21:57,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:21:57,903 INFO L225 Difference]: With dead ends: 139 [2020-07-20 11:21:57,903 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 11:21:57,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:21:57,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 11:21:57,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 11:21:57,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 11:21:57,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 11:21:57,906 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2020-07-20 11:21:57,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:21:57,909 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 11:21:57,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:21:57,909 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 11:21:57,910 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 11:21:58,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:21:58,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 11:21:58,436 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 11:21:58,437 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:21:58,437 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:21:58,437 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 11:21:58,437 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 11:21:58,437 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 11:21:58,437 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 8 140) no Hoare annotation was computed. [2020-07-20 11:21:58,438 INFO L268 CegarLoopResult]: For program point L77-1(lines 53 106) no Hoare annotation was computed. [2020-07-20 11:21:58,438 INFO L268 CegarLoopResult]: For program point L69(lines 69 73) no Hoare annotation was computed. [2020-07-20 11:21:58,438 INFO L268 CegarLoopResult]: For program point L24(lines 24 127) no Hoare annotation was computed. [2020-07-20 11:21:58,438 INFO L268 CegarLoopResult]: For program point L57-1(lines 53 106) no Hoare annotation was computed. [2020-07-20 11:21:58,438 INFO L268 CegarLoopResult]: For program point L49(lines 49 108) no Hoare annotation was computed. [2020-07-20 11:21:58,438 INFO L268 CegarLoopResult]: For program point L45(lines 45 110) no Hoare annotation was computed. [2020-07-20 11:21:58,438 INFO L271 CegarLoopResult]: At program point L136(lines 8 140) the Hoare annotation is: true [2020-07-20 11:21:58,439 INFO L264 CegarLoopResult]: At program point L99(lines 17 134) the Hoare annotation is: (or (and (not (= 0 main_~s__hit~0)) (<= main_~s__state~0 8640) (<= main_~blastFlag~0 3) (<= 8640 main_~s__state~0)) (<= main_~blastFlag~0 2)) [2020-07-20 11:21:58,439 INFO L268 CegarLoopResult]: For program point L95(lines 95 97) no Hoare annotation was computed. [2020-07-20 11:21:58,439 INFO L268 CegarLoopResult]: For program point L29(lines 29 124) no Hoare annotation was computed. [2020-07-20 11:21:58,439 INFO L264 CegarLoopResult]: At program point L25(lines 24 127) the Hoare annotation is: (and (<= main_~s__state~0 8640) (<= main_~blastFlag~0 2)) [2020-07-20 11:21:58,439 INFO L264 CegarLoopResult]: At program point L50(lines 49 108) the Hoare annotation is: (and (<= main_~blastFlag~0 2) (<= 8640 main_~s__state~0)) [2020-07-20 11:21:58,439 INFO L264 CegarLoopResult]: At program point L46(lines 45 110) the Hoare annotation is: (let ((.cse1 (<= main_~s__state~0 8640)) (.cse0 (<= 8640 main_~s__state~0))) (or (and (<= main_~blastFlag~0 0) .cse0) (and (not (= 0 main_~s__hit~0)) .cse1 (<= main_~blastFlag~0 3) .cse0) (and .cse1 (<= main_~blastFlag~0 2) .cse0))) [2020-07-20 11:21:58,439 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 8 140) no Hoare annotation was computed. [2020-07-20 11:21:58,440 INFO L264 CegarLoopResult]: At program point L96(lines 8 140) the Hoare annotation is: false [2020-07-20 11:21:58,440 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 138) no Hoare annotation was computed. [2020-07-20 11:21:58,440 INFO L264 CegarLoopResult]: At program point L30(lines 29 124) the Hoare annotation is: (and (<= main_~s__state~0 8640) (<= main_~blastFlag~0 2)) [2020-07-20 11:21:58,440 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 8 140) the Hoare annotation is: true [2020-07-20 11:21:58,440 INFO L268 CegarLoopResult]: For program point L92-1(lines 53 106) no Hoare annotation was computed. [2020-07-20 11:21:58,440 INFO L268 CegarLoopResult]: For program point L88-1(lines 53 106) no Hoare annotation was computed. [2020-07-20 11:21:58,441 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-07-20 11:21:58,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:21:58 BoogieIcfgContainer [2020-07-20 11:21:58,459 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 11:21:58,462 INFO L168 Benchmark]: Toolchain (without parser) took 3856.43 ms. Allocated memory was 143.1 MB in the beginning and 229.1 MB in the end (delta: 86.0 MB). Free memory was 101.1 MB in the beginning and 140.9 MB in the end (delta: -39.8 MB). Peak memory consumption was 46.2 MB. Max. memory is 7.1 GB. [2020-07-20 11:21:58,463 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 143.1 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 11:21:58,464 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.17 ms. Allocated memory is still 143.1 MB. Free memory was 100.7 MB in the beginning and 90.4 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-07-20 11:21:58,465 INFO L168 Benchmark]: Boogie Preprocessor took 118.46 ms. Allocated memory was 143.1 MB in the beginning and 199.8 MB in the end (delta: 56.6 MB). Free memory was 90.4 MB in the beginning and 178.3 MB in the end (delta: -87.9 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-07-20 11:21:58,466 INFO L168 Benchmark]: RCFGBuilder took 313.60 ms. Allocated memory is still 199.8 MB. Free memory was 177.6 MB in the beginning and 163.0 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2020-07-20 11:21:58,467 INFO L168 Benchmark]: TraceAbstraction took 3146.67 ms. Allocated memory was 199.8 MB in the beginning and 229.1 MB in the end (delta: 29.4 MB). Free memory was 163.0 MB in the beginning and 140.9 MB in the end (delta: 22.1 MB). Peak memory consumption was 51.5 MB. Max. memory is 7.1 GB. [2020-07-20 11:21:58,471 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 143.1 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 271.17 ms. Allocated memory is still 143.1 MB. Free memory was 100.7 MB in the beginning and 90.4 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.46 ms. Allocated memory was 143.1 MB in the beginning and 199.8 MB in the end (delta: 56.6 MB). Free memory was 90.4 MB in the beginning and 178.3 MB in the end (delta: -87.9 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 313.60 ms. Allocated memory is still 199.8 MB. Free memory was 177.6 MB in the beginning and 163.0 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3146.67 ms. Allocated memory was 199.8 MB in the beginning and 229.1 MB in the end (delta: 29.4 MB). Free memory was 163.0 MB in the beginning and 140.9 MB in the end (delta: 22.1 MB). Peak memory consumption was 51.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 138]: 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: 49]: Loop Invariant Derived loop invariant: blastFlag <= 2 && 8640 <= s__state - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((!(0 == s__hit) && s__state <= 8640) && blastFlag <= 3) && 8640 <= s__state) || blastFlag <= 2 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: s__state <= 8640 && blastFlag <= 2 - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: ((blastFlag <= 0 && 8640 <= s__state) || (((!(0 == s__hit) && s__state <= 8640) && blastFlag <= 3) && 8640 <= s__state)) || ((s__state <= 8640 && blastFlag <= 2) && 8640 <= s__state) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: s__state <= 8640 && blastFlag <= 2 - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 7, TraceHistogramMax: 6, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 197 SDtfs, 100 SDslu, 123 SDs, 0 SdLazy, 108 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 193 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 11 PreInvPairs, 32 NumberOfFragments, 77 HoareAnnotationTreeSize, 11 FomulaSimplifications, 140 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 86 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 200 NumberOfCodeBlocks, 200 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 193 ConstructedInterpolants, 0 QuantifiedInterpolants, 11239 SizeOfPredicates, 6 NumberOfNonLiveVariables, 402 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 171/171 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...