/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_1a.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 11:13:12,697 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 11:13:12,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 11:13:12,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 11:13:12,714 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 11:13:12,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 11:13:12,717 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 11:13:12,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 11:13:12,722 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 11:13:12,723 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 11:13:12,724 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 11:13:12,725 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 11:13:12,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 11:13:12,727 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 11:13:12,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 11:13:12,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 11:13:12,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 11:13:12,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 11:13:12,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 11:13:12,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 11:13:12,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 11:13:12,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 11:13:12,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 11:13:12,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 11:13:12,747 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 11:13:12,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 11:13:12,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 11:13:12,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 11:13:12,762 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 [2020-07-21 11:13:12,789 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 11:13:12,789 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 11:13:12,791 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 11:13:12,791 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 11:13:12,791 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 11:13:12,792 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 11:13:12,792 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 11:13:12,792 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 11:13:12,792 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 11:13:12,792 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 11:13:12,793 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 11:13:12,793 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 11:13:12,793 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 11:13:12,793 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 11:13:12,793 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 11:13:12,794 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 11:13:12,794 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 11:13:12,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 11:13:12,794 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 11:13:12,795 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 11:13:12,795 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 11:13:12,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 11:13:12,795 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 11:13:12,795 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 11:13:12,796 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 11:13:12,796 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 11:13:12,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:13:12,796 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 11:13:12,796 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 11:13:12,797 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 [2020-07-21 11:13:13,109 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 11:13:13,133 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 11:13:13,137 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 11:13:13,139 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 11:13:13,140 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 11:13:13,141 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_1a.cil.c [2020-07-21 11:13:13,228 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8e0c44e9/ce83a558f33f4ed0be37a1a473fae77e/FLAGd013853b4 [2020-07-21 11:13:13,811 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 11:13:13,812 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ssh-simplified/s3_srvr_1a.cil.c [2020-07-21 11:13:13,824 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8e0c44e9/ce83a558f33f4ed0be37a1a473fae77e/FLAGd013853b4 [2020-07-21 11:13:14,144 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8e0c44e9/ce83a558f33f4ed0be37a1a473fae77e [2020-07-21 11:13:14,154 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 11:13:14,157 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 11:13:14,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 11:13:14,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 11:13:14,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 11:13:14,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:13:14" (1/1) ... [2020-07-21 11:13:14,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10c6cfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:13:14, skipping insertion in model container [2020-07-21 11:13:14,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:13:14" (1/1) ... [2020-07-21 11:13:14,177 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 11:13:14,206 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 11:13:14,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:13:14,492 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 11:13:14,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:13:14,536 INFO L208 MainTranslator]: Completed translation [2020-07-21 11:13:14,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:13:14 WrapperNode [2020-07-21 11:13:14,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 11:13:14,537 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 11:13:14,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 11:13:14,538 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 11:13:14,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:13:14" (1/1) ... [2020-07-21 11:13:14,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:13:14" (1/1) ... [2020-07-21 11:13:14,641 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:13:14" (1/1) ... [2020-07-21 11:13:14,641 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:13:14" (1/1) ... [2020-07-21 11:13:14,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:13:14" (1/1) ... [2020-07-21 11:13:14,659 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:13:14" (1/1) ... [2020-07-21 11:13:14,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:13:14" (1/1) ... [2020-07-21 11:13:14,664 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 11:13:14,665 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 11:13:14,665 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 11:13:14,665 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 11:13:14,666 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:13:14" (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 [2020-07-21 11:13:14,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 11:13:14,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 11:13:14,732 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 11:13:14,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 11:13:14,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-21 11:13:14,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 11:13:14,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-07-21 11:13:14,733 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 11:13:14,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 11:13:14,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 11:13:15,042 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 11:13:15,043 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 11:13:15,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:13:15 BoogieIcfgContainer [2020-07-21 11:13:15,049 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 11:13:15,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 11:13:15,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 11:13:15,055 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 11:13:15,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:13:14" (1/3) ... [2020-07-21 11:13:15,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33ca73ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:13:15, skipping insertion in model container [2020-07-21 11:13:15,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:13:14" (2/3) ... [2020-07-21 11:13:15,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33ca73ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:13:15, skipping insertion in model container [2020-07-21 11:13:15,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:13:15" (3/3) ... [2020-07-21 11:13:15,059 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_1a.cil.c [2020-07-21 11:13:15,077 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 11:13:15,090 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 11:13:15,113 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 11:13:15,144 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 11:13:15,144 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 11:13:15,144 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 11:13:15,145 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 11:13:15,147 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 11:13:15,147 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 11:13:15,147 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 11:13:15,147 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 11:13:15,171 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-07-21 11:13:15,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-07-21 11:13:15,178 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:13:15,180 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:13:15,180 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:13:15,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:13:15,189 INFO L82 PathProgramCache]: Analyzing trace with hash 2008919768, now seen corresponding path program 1 times [2020-07-21 11:13:15,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:13:15,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545116551] [2020-07-21 11:13:15,204 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 [2020-07-21 11:13:15,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:13:15,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 11:13:15,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:13:15,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:13:15,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:13:15,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545116551] [2020-07-21 11:13:15,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:13:15,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 11:13:15,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139902333] [2020-07-21 11:13:15,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 11:13:15,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:13:15,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 11:13:15,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:13:15,382 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 3 states. [2020-07-21 11:13:15,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:13:15,538 INFO L93 Difference]: Finished difference Result 136 states and 224 transitions. [2020-07-21 11:13:15,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 11:13:15,541 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-07-21 11:13:15,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:13:15,557 INFO L225 Difference]: With dead ends: 136 [2020-07-21 11:13:15,557 INFO L226 Difference]: Without dead ends: 83 [2020-07-21 11:13:15,562 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 [2020-07-21 11:13:15,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-07-21 11:13:15,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-07-21 11:13:15,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-07-21 11:13:15,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 126 transitions. [2020-07-21 11:13:15,620 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 126 transitions. Word has length 8 [2020-07-21 11:13:15,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:13:15,621 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 126 transitions. [2020-07-21 11:13:15,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 11:13:15,621 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 126 transitions. [2020-07-21 11:13:15,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-21 11:13:15,622 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:13:15,623 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:13:15,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:13:15,838 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:13:15,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:13:15,839 INFO L82 PathProgramCache]: Analyzing trace with hash 2066454160, now seen corresponding path program 1 times [2020-07-21 11:13:15,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:13:15,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539106096] [2020-07-21 11:13:15,841 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 [2020-07-21 11:13:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:13:15,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 11:13:15,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:13:15,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:13:15,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:13:15,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539106096] [2020-07-21 11:13:15,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:13:15,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 11:13:15,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960941057] [2020-07-21 11:13:15,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 11:13:15,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:13:15,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 11:13:15,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:13:15,903 INFO L87 Difference]: Start difference. First operand 83 states and 126 transitions. Second operand 3 states. [2020-07-21 11:13:16,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:13:16,008 INFO L93 Difference]: Finished difference Result 161 states and 253 transitions. [2020-07-21 11:13:16,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 11:13:16,009 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-07-21 11:13:16,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:13:16,011 INFO L225 Difference]: With dead ends: 161 [2020-07-21 11:13:16,012 INFO L226 Difference]: Without dead ends: 121 [2020-07-21 11:13:16,013 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 [2020-07-21 11:13:16,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-07-21 11:13:16,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2020-07-21 11:13:16,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-07-21 11:13:16,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 184 transitions. [2020-07-21 11:13:16,034 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 184 transitions. Word has length 13 [2020-07-21 11:13:16,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:13:16,035 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 184 transitions. [2020-07-21 11:13:16,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 11:13:16,035 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 184 transitions. [2020-07-21 11:13:16,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-21 11:13:16,037 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:13:16,037 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:13:16,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:13:16,252 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:13:16,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:13:16,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1216248382, now seen corresponding path program 1 times [2020-07-21 11:13:16,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:13:16,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846503232] [2020-07-21 11:13:16,254 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 [2020-07-21 11:13:16,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:13:16,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 11:13:16,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:13:16,317 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-21 11:13:16,317 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:13:16,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846503232] [2020-07-21 11:13:16,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:13:16,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 11:13:16,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678346394] [2020-07-21 11:13:16,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 11:13:16,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:13:16,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 11:13:16,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:13:16,320 INFO L87 Difference]: Start difference. First operand 121 states and 184 transitions. Second operand 3 states. [2020-07-21 11:13:16,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:13:16,400 INFO L93 Difference]: Finished difference Result 237 states and 369 transitions. [2020-07-21 11:13:16,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 11:13:16,400 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-21 11:13:16,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:13:16,403 INFO L225 Difference]: With dead ends: 237 [2020-07-21 11:13:16,403 INFO L226 Difference]: Without dead ends: 159 [2020-07-21 11:13:16,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:13:16,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-07-21 11:13:16,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2020-07-21 11:13:16,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-07-21 11:13:16,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 243 transitions. [2020-07-21 11:13:16,428 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 243 transitions. Word has length 19 [2020-07-21 11:13:16,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:13:16,428 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 243 transitions. [2020-07-21 11:13:16,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 11:13:16,428 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 243 transitions. [2020-07-21 11:13:16,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-21 11:13:16,430 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:13:16,431 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 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] [2020-07-21 11:13:16,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:13:16,644 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:13:16,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:13:16,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1623728883, now seen corresponding path program 1 times [2020-07-21 11:13:16,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:13:16,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214756859] [2020-07-21 11:13:16,647 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) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:13:16,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:13:16,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 11:13:16,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:13:16,710 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-21 11:13:16,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:13:16,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214756859] [2020-07-21 11:13:16,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:13:16,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 11:13:16,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345801862] [2020-07-21 11:13:16,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 11:13:16,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:13:16,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 11:13:16,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:13:16,716 INFO L87 Difference]: Start difference. First operand 159 states and 243 transitions. Second operand 3 states. [2020-07-21 11:13:16,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:13:16,913 INFO L93 Difference]: Finished difference Result 371 states and 583 transitions. [2020-07-21 11:13:16,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 11:13:16,914 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-07-21 11:13:16,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:13:16,917 INFO L225 Difference]: With dead ends: 371 [2020-07-21 11:13:16,917 INFO L226 Difference]: Without dead ends: 217 [2020-07-21 11:13:16,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:13:16,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-07-21 11:13:16,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 211. [2020-07-21 11:13:16,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-07-21 11:13:16,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 295 transitions. [2020-07-21 11:13:16,941 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 295 transitions. Word has length 34 [2020-07-21 11:13:16,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:13:16,941 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 295 transitions. [2020-07-21 11:13:16,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 11:13:16,942 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 295 transitions. [2020-07-21 11:13:16,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-07-21 11:13:16,944 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:13:16,944 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:13:17,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:13:17,159 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:13:17,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:13:17,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1694730092, now seen corresponding path program 1 times [2020-07-21 11:13:17,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:13:17,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334517888] [2020-07-21 11:13:17,162 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 [2020-07-21 11:13:17,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:13:17,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 11:13:17,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:13:17,220 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-21 11:13:17,221 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:13:17,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334517888] [2020-07-21 11:13:17,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:13:17,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 11:13:17,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283029303] [2020-07-21 11:13:17,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 11:13:17,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:13:17,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 11:13:17,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:13:17,223 INFO L87 Difference]: Start difference. First operand 211 states and 295 transitions. Second operand 3 states. [2020-07-21 11:13:17,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:13:17,302 INFO L93 Difference]: Finished difference Result 419 states and 592 transitions. [2020-07-21 11:13:17,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 11:13:17,303 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-07-21 11:13:17,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:13:17,306 INFO L225 Difference]: With dead ends: 419 [2020-07-21 11:13:17,307 INFO L226 Difference]: Without dead ends: 264 [2020-07-21 11:13:17,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:13:17,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-07-21 11:13:17,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 262. [2020-07-21 11:13:17,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-07-21 11:13:17,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 369 transitions. [2020-07-21 11:13:17,331 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 369 transitions. Word has length 48 [2020-07-21 11:13:17,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:13:17,331 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 369 transitions. [2020-07-21 11:13:17,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 11:13:17,332 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 369 transitions. [2020-07-21 11:13:17,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-21 11:13:17,335 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:13:17,335 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:13:17,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:13:17,544 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:13:17,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:13:17,545 INFO L82 PathProgramCache]: Analyzing trace with hash 365198397, now seen corresponding path program 1 times [2020-07-21 11:13:17,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:13:17,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993124656] [2020-07-21 11:13:17,547 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 [2020-07-21 11:13:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:13:17,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 11:13:17,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:13:17,599 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-07-21 11:13:17,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:13:17,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993124656] [2020-07-21 11:13:17,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:13:17,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 11:13:17,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75472550] [2020-07-21 11:13:17,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 11:13:17,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:13:17,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 11:13:17,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:13:17,603 INFO L87 Difference]: Start difference. First operand 262 states and 369 transitions. Second operand 3 states. [2020-07-21 11:13:17,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:13:17,754 INFO L93 Difference]: Finished difference Result 527 states and 756 transitions. [2020-07-21 11:13:17,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 11:13:17,757 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-07-21 11:13:17,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:13:17,761 INFO L225 Difference]: With dead ends: 527 [2020-07-21 11:13:17,762 INFO L226 Difference]: Without dead ends: 192 [2020-07-21 11:13:17,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:13:17,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-07-21 11:13:17,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 189. [2020-07-21 11:13:17,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-07-21 11:13:17,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 248 transitions. [2020-07-21 11:13:17,806 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 248 transitions. Word has length 51 [2020-07-21 11:13:17,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:13:17,807 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 248 transitions. [2020-07-21 11:13:17,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 11:13:17,810 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 248 transitions. [2020-07-21 11:13:17,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-21 11:13:17,816 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:13:17,816 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:13:18,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:13:18,018 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:13:18,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:13:18,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1939547864, now seen corresponding path program 1 times [2020-07-21 11:13:18,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:13:18,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728216258] [2020-07-21 11:13:18,019 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 [2020-07-21 11:13:18,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:13:18,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 11:13:18,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:13:18,090 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-07-21 11:13:18,091 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:13:18,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728216258] [2020-07-21 11:13:18,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:13:18,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 11:13:18,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868583682] [2020-07-21 11:13:18,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 11:13:18,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:13:18,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 11:13:18,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:13:18,093 INFO L87 Difference]: Start difference. First operand 189 states and 248 transitions. Second operand 3 states. [2020-07-21 11:13:18,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:13:18,136 INFO L93 Difference]: Finished difference Result 225 states and 289 transitions. [2020-07-21 11:13:18,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 11:13:18,138 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-07-21 11:13:18,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:13:18,141 INFO L225 Difference]: With dead ends: 225 [2020-07-21 11:13:18,141 INFO L226 Difference]: Without dead ends: 223 [2020-07-21 11:13:18,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:13:18,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-07-21 11:13:18,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2020-07-21 11:13:18,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-07-21 11:13:18,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 287 transitions. [2020-07-21 11:13:18,158 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 287 transitions. Word has length 79 [2020-07-21 11:13:18,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:13:18,159 INFO L479 AbstractCegarLoop]: Abstraction has 223 states and 287 transitions. [2020-07-21 11:13:18,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 11:13:18,159 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 287 transitions. [2020-07-21 11:13:18,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-07-21 11:13:18,161 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:13:18,162 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:13:18,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:13:18,376 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:13:18,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:13:18,377 INFO L82 PathProgramCache]: Analyzing trace with hash 2067785068, now seen corresponding path program 1 times [2020-07-21 11:13:18,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:13:18,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488338829] [2020-07-21 11:13:18,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:13:18,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:13:18,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 11:13:18,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:13:18,496 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-07-21 11:13:18,497 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:13:18,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488338829] [2020-07-21 11:13:18,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:13:18,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 11:13:18,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551643749] [2020-07-21 11:13:18,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 11:13:18,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:13:18,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 11:13:18,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:13:18,501 INFO L87 Difference]: Start difference. First operand 223 states and 287 transitions. Second operand 3 states. [2020-07-21 11:13:18,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:13:18,591 INFO L93 Difference]: Finished difference Result 365 states and 446 transitions. [2020-07-21 11:13:18,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 11:13:18,592 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2020-07-21 11:13:18,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:13:18,594 INFO L225 Difference]: With dead ends: 365 [2020-07-21 11:13:18,594 INFO L226 Difference]: Without dead ends: 223 [2020-07-21 11:13:18,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:13:18,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-07-21 11:13:18,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2020-07-21 11:13:18,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-07-21 11:13:18,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 283 transitions. [2020-07-21 11:13:18,607 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 283 transitions. Word has length 95 [2020-07-21 11:13:18,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:13:18,608 INFO L479 AbstractCegarLoop]: Abstraction has 223 states and 283 transitions. [2020-07-21 11:13:18,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 11:13:18,608 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 283 transitions. [2020-07-21 11:13:18,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-07-21 11:13:18,611 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:13:18,611 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:13:18,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:13:18,825 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:13:18,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:13:18,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1478800868, now seen corresponding path program 1 times [2020-07-21 11:13:18,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:13:18,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238236899] [2020-07-21 11:13:18,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:13:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:13:18,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 11:13:18,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:13:18,905 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2020-07-21 11:13:18,906 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:13:18,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238236899] [2020-07-21 11:13:18,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:13:18,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 11:13:18,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554523160] [2020-07-21 11:13:18,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 11:13:18,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:13:18,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 11:13:18,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:13:18,908 INFO L87 Difference]: Start difference. First operand 223 states and 283 transitions. Second operand 3 states. [2020-07-21 11:13:19,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:13:19,008 INFO L93 Difference]: Finished difference Result 413 states and 490 transitions. [2020-07-21 11:13:19,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 11:13:19,009 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 125 [2020-07-21 11:13:19,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:13:19,011 INFO L225 Difference]: With dead ends: 413 [2020-07-21 11:13:19,011 INFO L226 Difference]: Without dead ends: 271 [2020-07-21 11:13:19,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:13:19,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-07-21 11:13:19,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2020-07-21 11:13:19,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-07-21 11:13:19,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 331 transitions. [2020-07-21 11:13:19,026 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 331 transitions. Word has length 125 [2020-07-21 11:13:19,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:13:19,026 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 331 transitions. [2020-07-21 11:13:19,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 11:13:19,027 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 331 transitions. [2020-07-21 11:13:19,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-07-21 11:13:19,029 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:13:19,029 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 8, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:13:19,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:13:19,243 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:13:19,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:13:19,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1095214938, now seen corresponding path program 1 times [2020-07-21 11:13:19,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:13:19,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395280190] [2020-07-21 11:13:19,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:13:19,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:13:19,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 11:13:19,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:13:19,326 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 256 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2020-07-21 11:13:19,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:13:19,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395280190] [2020-07-21 11:13:19,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:13:19,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 11:13:19,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430783004] [2020-07-21 11:13:19,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 11:13:19,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:13:19,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 11:13:19,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:13:19,329 INFO L87 Difference]: Start difference. First operand 271 states and 331 transitions. Second operand 3 states. [2020-07-21 11:13:19,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:13:19,367 INFO L93 Difference]: Finished difference Result 414 states and 479 transitions. [2020-07-21 11:13:19,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 11:13:19,367 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 139 [2020-07-21 11:13:19,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:13:19,368 INFO L225 Difference]: With dead ends: 414 [2020-07-21 11:13:19,368 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 11:13:19,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:13:19,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 11:13:19,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 11:13:19,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 11:13:19,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 11:13:19,370 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 139 [2020-07-21 11:13:19,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:13:19,370 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 11:13:19,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 11:13:19,371 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 11:13:19,371 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 11:13:19,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:13:19,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 11:13:20,146 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-21 11:13:20,146 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 11:13:20,146 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 11:13:20,146 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 11:13:20,146 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 11:13:20,147 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 11:13:20,147 INFO L268 CegarLoopResult]: For program point L60(lines 60 189) no Hoare annotation was computed. [2020-07-21 11:13:20,147 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 8 217) no Hoare annotation was computed. [2020-07-21 11:13:20,147 INFO L268 CegarLoopResult]: For program point L151-1(lines 74 183) no Hoare annotation was computed. [2020-07-21 11:13:20,147 INFO L268 CegarLoopResult]: For program point L52(lines 52 193) no Hoare annotation was computed. [2020-07-21 11:13:20,147 INFO L268 CegarLoopResult]: For program point L85-1(lines 74 183) no Hoare annotation was computed. [2020-07-21 11:13:20,148 INFO L264 CegarLoopResult]: At program point L176(lines 22 211) the Hoare annotation is: (let ((.cse0 (<= main_~blastFlag~0 3))) (or (<= main_~blastFlag~0 1) (and (<= 8672 main_~s__state~0) .cse0) (and (<= main_~s__state~0 8656) (<= main_~blastFlag~0 2)) (and (not (= 0 main_~s__hit~0)) (<= main_~s__state~0 8640) .cse0 (<= 8640 main_~s__state~0)))) [2020-07-21 11:13:20,148 INFO L268 CegarLoopResult]: For program point L44(lines 44 197) no Hoare annotation was computed. [2020-07-21 11:13:20,148 INFO L268 CegarLoopResult]: For program point L135(lines 135 139) no Hoare annotation was computed. [2020-07-21 11:13:20,148 INFO L264 CegarLoopResult]: At program point L69(lines 68 185) the Hoare annotation is: (let ((.cse0 (<= 8640 main_~s__state~0))) (or (and (<= main_~s__state~0 8656) (<= main_~blastFlag~0 2) .cse0) (and (<= main_~blastFlag~0 1) .cse0))) [2020-07-21 11:13:20,148 INFO L268 CegarLoopResult]: For program point L36(lines 36 201) no Hoare annotation was computed. [2020-07-21 11:13:20,148 INFO L264 CegarLoopResult]: At program point L61(lines 60 189) the Hoare annotation is: (or (<= main_~blastFlag~0 1) (and (<= main_~s__state~0 8640) (<= main_~blastFlag~0 2))) [2020-07-21 11:13:20,149 INFO L264 CegarLoopResult]: At program point L53(lines 52 193) the Hoare annotation is: (and (<= main_~s__state~0 8640) (<= main_~blastFlag~0 2)) [2020-07-21 11:13:20,149 INFO L264 CegarLoopResult]: At program point L45(lines 44 197) the Hoare annotation is: (and (<= main_~s__state~0 8640) (<= main_~blastFlag~0 2)) [2020-07-21 11:13:20,149 INFO L268 CegarLoopResult]: For program point L78-1(lines 78 80) no Hoare annotation was computed. [2020-07-21 11:13:20,149 INFO L268 CegarLoopResult]: For program point L169-1(lines 74 183) no Hoare annotation was computed. [2020-07-21 11:13:20,149 INFO L264 CegarLoopResult]: At program point L37(lines 36 201) the Hoare annotation is: (and (<= main_~s__state~0 8640) (<= main_~blastFlag~0 2)) [2020-07-21 11:13:20,149 INFO L268 CegarLoopResult]: For program point L29(lines 29 204) no Hoare annotation was computed. [2020-07-21 11:13:20,151 INFO L264 CegarLoopResult]: At program point L120(lines 113 122) the Hoare annotation is: (and (<= main_~s__state~0 8640) (<= main_~blastFlag~0 2)) [2020-07-21 11:13:20,151 INFO L264 CegarLoopResult]: At program point L112(lines 105 123) the Hoare annotation is: (and (<= main_~s__state~0 8640) (<= main_~blastFlag~0 2)) [2020-07-21 11:13:20,151 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 8 217) no Hoare annotation was computed. [2020-07-21 11:13:20,151 INFO L268 CegarLoopResult]: For program point L162-1(lines 162 164) no Hoare annotation was computed. [2020-07-21 11:13:20,151 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 215) no Hoare annotation was computed. [2020-07-21 11:13:20,152 INFO L264 CegarLoopResult]: At program point L30(lines 29 204) the Hoare annotation is: (and (<= main_~s__state~0 8640) (<= main_~blastFlag~0 2)) [2020-07-21 11:13:20,152 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 8 217) the Hoare annotation is: true [2020-07-21 11:13:20,152 INFO L268 CegarLoopResult]: For program point L105(lines 105 123) no Hoare annotation was computed. [2020-07-21 11:13:20,152 INFO L268 CegarLoopResult]: For program point L72(lines 72 183) no Hoare annotation was computed. [2020-07-21 11:13:20,152 INFO L268 CegarLoopResult]: For program point L64(lines 64 187) no Hoare annotation was computed. [2020-07-21 11:13:20,152 INFO L268 CegarLoopResult]: For program point L56(lines 56 191) no Hoare annotation was computed. [2020-07-21 11:13:20,152 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-07-21 11:13:20,153 INFO L271 CegarLoopResult]: At program point L213(lines 8 217) the Hoare annotation is: true [2020-07-21 11:13:20,153 INFO L268 CegarLoopResult]: For program point L114(lines 114 118) no Hoare annotation was computed. [2020-07-21 11:13:20,153 INFO L268 CegarLoopResult]: For program point L48(lines 48 195) no Hoare annotation was computed. [2020-07-21 11:13:20,153 INFO L268 CegarLoopResult]: For program point L172(lines 172 174) no Hoare annotation was computed. [2020-07-21 11:13:20,154 INFO L268 CegarLoopResult]: For program point L106(lines 106 110) no Hoare annotation was computed. [2020-07-21 11:13:20,154 INFO L264 CegarLoopResult]: At program point L73(lines 72 183) the Hoare annotation is: (and (<= 8672 main_~s__state~0) (<= main_~blastFlag~0 3)) [2020-07-21 11:13:20,154 INFO L268 CegarLoopResult]: For program point L40(lines 40 199) no Hoare annotation was computed. [2020-07-21 11:13:20,154 INFO L264 CegarLoopResult]: At program point L65(lines 64 187) the Hoare annotation is: (let ((.cse0 (<= main_~s__state~0 8640)) (.cse1 (<= 8640 main_~s__state~0))) (or (and (not (= 0 main_~s__hit~0)) .cse0 (<= main_~blastFlag~0 3) .cse1) (and (<= main_~blastFlag~0 1) .cse1) (and .cse0 (<= main_~blastFlag~0 2) .cse1))) [2020-07-21 11:13:20,155 INFO L268 CegarLoopResult]: For program point L32(lines 32 203) no Hoare annotation was computed. [2020-07-21 11:13:20,155 INFO L264 CegarLoopResult]: At program point L57(lines 56 191) the Hoare annotation is: (and (<= main_~s__state~0 8640) (<= main_~blastFlag~0 2)) [2020-07-21 11:13:20,155 INFO L264 CegarLoopResult]: At program point L49(lines 48 195) the Hoare annotation is: (and (<= main_~s__state~0 8640) (<= main_~blastFlag~0 2)) [2020-07-21 11:13:20,155 INFO L264 CegarLoopResult]: At program point L173(lines 8 217) the Hoare annotation is: false [2020-07-21 11:13:20,155 INFO L264 CegarLoopResult]: At program point L41(lines 40 199) the Hoare annotation is: (and (<= main_~s__state~0 8640) (<= main_~blastFlag~0 2)) [2020-07-21 11:13:20,155 INFO L264 CegarLoopResult]: At program point L33(lines 32 203) the Hoare annotation is: (and (<= main_~s__state~0 8640) (<= main_~blastFlag~0 2)) [2020-07-21 11:13:20,156 INFO L268 CegarLoopResult]: For program point L68(lines 68 185) no Hoare annotation was computed. [2020-07-21 11:13:20,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:13:20 BoogieIcfgContainer [2020-07-21 11:13:20,199 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 11:13:20,204 INFO L168 Benchmark]: Toolchain (without parser) took 6045.31 ms. Allocated memory was 138.4 MB in the beginning and 246.4 MB in the end (delta: 108.0 MB). Free memory was 103.0 MB in the beginning and 181.3 MB in the end (delta: -78.4 MB). Peak memory consumption was 114.2 MB. Max. memory is 7.1 GB. [2020-07-21 11:13:20,205 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-21 11:13:20,205 INFO L168 Benchmark]: CACSL2BoogieTranslator took 376.71 ms. Allocated memory is still 138.4 MB. Free memory was 102.5 MB in the beginning and 91.5 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-07-21 11:13:20,210 INFO L168 Benchmark]: Boogie Preprocessor took 126.55 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 91.5 MB in the beginning and 180.5 MB in the end (delta: -89.0 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-07-21 11:13:20,210 INFO L168 Benchmark]: RCFGBuilder took 384.49 ms. Allocated memory is still 202.4 MB. Free memory was 180.5 MB in the beginning and 160.3 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-07-21 11:13:20,214 INFO L168 Benchmark]: TraceAbstraction took 5148.88 ms. Allocated memory was 202.4 MB in the beginning and 246.4 MB in the end (delta: 44.0 MB). Free memory was 160.3 MB in the beginning and 181.3 MB in the end (delta: -21.1 MB). Peak memory consumption was 107.6 MB. Max. memory is 7.1 GB. [2020-07-21 11:13:20,224 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 376.71 ms. Allocated memory is still 138.4 MB. Free memory was 102.5 MB in the beginning and 91.5 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.55 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 91.5 MB in the beginning and 180.5 MB in the end (delta: -89.0 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 384.49 ms. Allocated memory is still 202.4 MB. Free memory was 180.5 MB in the beginning and 160.3 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5148.88 ms. Allocated memory was 202.4 MB in the beginning and 246.4 MB in the end (delta: 44.0 MB). Free memory was 160.3 MB in the beginning and 181.3 MB in the end (delta: -21.1 MB). Peak memory consumption was 107.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 215]: 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: 32]: Loop Invariant Derived loop invariant: s__state <= 8640 && blastFlag <= 2 - InvariantResult [Line: 64]: Loop Invariant Derived loop invariant: ((((!(0 == s__hit) && s__state <= 8640) && blastFlag <= 3) && 8640 <= s__state) || (blastFlag <= 1 && 8640 <= s__state)) || ((s__state <= 8640 && blastFlag <= 2) && 8640 <= s__state) - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: s__state <= 8640 && blastFlag <= 2 - InvariantResult [Line: 113]: Loop Invariant Derived loop invariant: s__state <= 8640 && blastFlag <= 2 - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: s__state <= 8640 && blastFlag <= 2 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: s__state <= 8640 && blastFlag <= 2 - InvariantResult [Line: 68]: Loop Invariant Derived loop invariant: ((s__state <= 8656 && blastFlag <= 2) && 8640 <= s__state) || (blastFlag <= 1 && 8640 <= s__state) - InvariantResult [Line: 105]: Loop Invariant Derived loop invariant: s__state <= 8640 && blastFlag <= 2 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((blastFlag <= 1 || (8672 <= s__state && blastFlag <= 3)) || (s__state <= 8656 && blastFlag <= 2)) || (((!(0 == s__hit) && s__state <= 8640) && blastFlag <= 3) && 8640 <= s__state) - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: s__state <= 8640 && blastFlag <= 2 - InvariantResult [Line: 60]: Loop Invariant Derived loop invariant: blastFlag <= 1 || (s__state <= 8640 && blastFlag <= 2) - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: s__state <= 8640 && blastFlag <= 2 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: s__state <= 8640 && blastFlag <= 2 - InvariantResult [Line: 72]: Loop Invariant Derived loop invariant: 8672 <= s__state && blastFlag <= 3 - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: s__state <= 8640 && blastFlag <= 2 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 50 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.4s, OverallIterations: 10, TraceHistogramMax: 10, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 609 SDtfs, 340 SDslu, 366 SDs, 0 SdLazy, 290 SolverSat, 87 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 601 GetRequests, 591 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=271occurred in iteration=9, 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, 10 MinimizatonAttempts, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 21 LocationsWithAnnotation, 21 PreInvPairs, 87 NumberOfFragments, 176 HoareAnnotationTreeSize, 21 FomulaSimplifications, 787 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 21 FomulaSimplificationsInter, 209 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 611 NumberOfCodeBlocks, 611 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 601 ConstructedInterpolants, 0 QuantifiedInterpolants, 85345 SizeOfPredicates, 9 NumberOfNonLiveVariables, 1077 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 1133/1133 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...