/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 [2020-07-20 11:21:43,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 11:21:43,838 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 11:21:43,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 11:21:43,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 11:21:43,858 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 11:21:43,860 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 11:21:43,870 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 11:21:43,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 11:21:43,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 11:21:43,880 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 11:21:43,882 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 11:21:43,882 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 11:21:43,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 11:21:43,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 11:21:43,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 11:21:43,889 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 11:21:43,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 11:21:43,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 11:21:43,896 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 11:21:43,900 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 11:21:43,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 11:21:43,904 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 11:21:43,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 11:21:43,907 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 11:21:43,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 11:21:43,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 11:21:43,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 11:21:43,916 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 11:21:43,931 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 11:21:43,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 11:21:43,932 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 11:21:43,932 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 11:21:43,933 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 11:21:43,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 11:21:43,933 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 11:21:43,933 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 11:21:43,933 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 11:21:43,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 11:21:43,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 11:21:43,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 11:21:43,934 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 11:21:43,934 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 11:21:43,934 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 11:21:43,935 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 11:21:43,935 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 11:21:43,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 11:21:43,935 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 11:21:43,936 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 11:21:43,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 11:21:43,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:21:43,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 11:21:43,936 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 11:21:43,937 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 11:21:43,937 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 11:21:43,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:21:43,937 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 11:21:43,937 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 11:21:43,938 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 11:21:44,235 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 11:21:44,250 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 11:21:44,254 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 11:21:44,255 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 11:21:44,257 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 11:21:44,259 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_1a.cil.c [2020-07-20 11:21:44,341 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1ad1e7f0/4bc0e76f35bb460786b0097bf126b305/FLAGcc4eb6b68 [2020-07-20 11:21:44,851 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 11:21:44,851 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ssh-simplified/s3_srvr_1a.cil.c [2020-07-20 11:21:44,859 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1ad1e7f0/4bc0e76f35bb460786b0097bf126b305/FLAGcc4eb6b68 [2020-07-20 11:21:45,154 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1ad1e7f0/4bc0e76f35bb460786b0097bf126b305 [2020-07-20 11:21:45,164 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 11:21:45,167 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 11:21:45,168 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 11:21:45,168 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 11:21:45,172 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 11:21:45,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:21:45" (1/1) ... [2020-07-20 11:21:45,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69b17544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:21:45, skipping insertion in model container [2020-07-20 11:21:45,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:21:45" (1/1) ... [2020-07-20 11:21:45,188 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 11:21:45,219 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 11:21:45,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:21:45,413 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 11:21:45,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:21:45,546 INFO L208 MainTranslator]: Completed translation [2020-07-20 11:21:45,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:21:45 WrapperNode [2020-07-20 11:21:45,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 11:21:45,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 11:21:45,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 11:21:45,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 11:21:45,562 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:21:45" (1/1) ... [2020-07-20 11:21:45,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:21:45" (1/1) ... [2020-07-20 11:21:45,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:21:45" (1/1) ... [2020-07-20 11:21:45,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:21:45" (1/1) ... [2020-07-20 11:21:45,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:21:45" (1/1) ... [2020-07-20 11:21:45,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:21:45" (1/1) ... [2020-07-20 11:21:45,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:21:45" (1/1) ... [2020-07-20 11:21:45,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 11:21:45,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 11:21:45,584 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 11:21:45,585 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 11:21:45,585 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:21:45" (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 11:21:45,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 11:21:45,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 11:21:45,655 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 11:21:45,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 11:21:45,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-20 11:21:45,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 11:21:45,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-07-20 11:21:45,656 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 11:21:45,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 11:21:45,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 11:21:45,955 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 11:21:45,955 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 11:21:45,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:21:45 BoogieIcfgContainer [2020-07-20 11:21:45,962 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 11:21:45,964 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 11:21:45,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 11:21:45,968 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 11:21:45,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:21:45" (1/3) ... [2020-07-20 11:21:45,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e956f6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:21:45, skipping insertion in model container [2020-07-20 11:21:45,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:21:45" (2/3) ... [2020-07-20 11:21:45,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e956f6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:21:45, skipping insertion in model container [2020-07-20 11:21:45,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:21:45" (3/3) ... [2020-07-20 11:21:45,973 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_1a.cil.c [2020-07-20 11:21:45,987 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 11:21:45,998 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 11:21:46,017 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 11:21:46,059 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 11:21:46,060 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 11:21:46,060 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 11:21:46,060 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 11:21:46,060 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 11:21:46,060 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 11:21:46,061 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 11:21:46,061 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 11:21:46,101 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-07-20 11:21:46,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-07-20 11:21:46,109 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:21:46,111 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:21:46,111 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:21:46,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:21:46,120 INFO L82 PathProgramCache]: Analyzing trace with hash 2008919768, now seen corresponding path program 1 times [2020-07-20 11:21:46,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:21:46,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593124043] [2020-07-20 11:21:46,131 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 11:21:46,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:21:46,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 11:21:46,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:21:46,247 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 11:21:46,248 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:21:46,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593124043] [2020-07-20 11:21:46,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:21:46,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:21:46,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862351894] [2020-07-20 11:21:46,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:21:46,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:21:46,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:21:46,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:21:46,276 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 3 states. [2020-07-20 11:21:46,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:21:46,420 INFO L93 Difference]: Finished difference Result 136 states and 224 transitions. [2020-07-20 11:21:46,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:21:46,422 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-07-20 11:21:46,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:21:46,439 INFO L225 Difference]: With dead ends: 136 [2020-07-20 11:21:46,442 INFO L226 Difference]: Without dead ends: 83 [2020-07-20 11:21:46,450 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 11:21:46,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-07-20 11:21:46,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-07-20 11:21:46,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-07-20 11:21:46,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 126 transitions. [2020-07-20 11:21:46,505 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 126 transitions. Word has length 8 [2020-07-20 11:21:46,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:21:46,506 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 126 transitions. [2020-07-20 11:21:46,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:21:46,507 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 126 transitions. [2020-07-20 11:21:46,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-20 11:21:46,508 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:21:46,508 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:21:46,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:21:46,725 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:21:46,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:21:46,726 INFO L82 PathProgramCache]: Analyzing trace with hash 2066454160, now seen corresponding path program 1 times [2020-07-20 11:21:46,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:21:46,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806592006] [2020-07-20 11:21:46,728 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 11:21:46,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:21:46,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 11:21:46,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:21:46,796 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 11:21:46,797 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:21:46,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806592006] [2020-07-20 11:21:46,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:21:46,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:21:46,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264699777] [2020-07-20 11:21:46,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:21:46,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:21:46,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:21:46,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:21:46,802 INFO L87 Difference]: Start difference. First operand 83 states and 126 transitions. Second operand 3 states. [2020-07-20 11:21:46,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:21:46,884 INFO L93 Difference]: Finished difference Result 161 states and 253 transitions. [2020-07-20 11:21:46,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:21:46,885 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-07-20 11:21:46,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:21:46,888 INFO L225 Difference]: With dead ends: 161 [2020-07-20 11:21:46,888 INFO L226 Difference]: Without dead ends: 121 [2020-07-20 11:21:46,890 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 11:21:46,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-07-20 11:21:46,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2020-07-20 11:21:46,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-07-20 11:21:46,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 184 transitions. [2020-07-20 11:21:46,911 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 184 transitions. Word has length 13 [2020-07-20 11:21:46,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:21:46,911 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 184 transitions. [2020-07-20 11:21:46,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:21:46,911 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 184 transitions. [2020-07-20 11:21:46,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-20 11:21:46,913 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:21:46,913 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:21:47,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:21:47,128 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:21:47,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:21:47,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1216248382, now seen corresponding path program 1 times [2020-07-20 11:21:47,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:21:47,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832326000] [2020-07-20 11:21:47,130 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 11:21:47,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:21:47,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 11:21:47,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:21:47,187 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 11:21:47,191 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:21:47,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832326000] [2020-07-20 11:21:47,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:21:47,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:21:47,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971035641] [2020-07-20 11:21:47,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:21:47,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:21:47,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:21:47,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:21:47,193 INFO L87 Difference]: Start difference. First operand 121 states and 184 transitions. Second operand 3 states. [2020-07-20 11:21:47,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:21:47,271 INFO L93 Difference]: Finished difference Result 237 states and 369 transitions. [2020-07-20 11:21:47,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:21:47,272 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-20 11:21:47,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:21:47,274 INFO L225 Difference]: With dead ends: 237 [2020-07-20 11:21:47,274 INFO L226 Difference]: Without dead ends: 159 [2020-07-20 11:21:47,276 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 [2020-07-20 11:21:47,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-07-20 11:21:47,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2020-07-20 11:21:47,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-07-20 11:21:47,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 243 transitions. [2020-07-20 11:21:47,299 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 243 transitions. Word has length 19 [2020-07-20 11:21:47,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:21:47,300 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 243 transitions. [2020-07-20 11:21:47,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:21:47,300 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 243 transitions. [2020-07-20 11:21:47,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-20 11:21:47,302 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:21:47,302 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] [2020-07-20 11:21:47,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:21:47,518 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:21:47,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:21:47,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1623728883, now seen corresponding path program 1 times [2020-07-20 11:21:47,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:21:47,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970055493] [2020-07-20 11:21:47,520 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 [2020-07-20 11:21:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:21:47,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 11:21:47,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:21:47,581 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-20 11:21:47,582 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:21:47,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970055493] [2020-07-20 11:21:47,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:21:47,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:21:47,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808719211] [2020-07-20 11:21:47,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:21:47,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:21:47,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:21:47,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:21:47,585 INFO L87 Difference]: Start difference. First operand 159 states and 243 transitions. Second operand 3 states. [2020-07-20 11:21:47,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:21:47,730 INFO L93 Difference]: Finished difference Result 371 states and 583 transitions. [2020-07-20 11:21:47,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:21:47,731 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-07-20 11:21:47,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:21:47,733 INFO L225 Difference]: With dead ends: 371 [2020-07-20 11:21:47,734 INFO L226 Difference]: Without dead ends: 217 [2020-07-20 11:21:47,735 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 [2020-07-20 11:21:47,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-07-20 11:21:47,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 211. [2020-07-20 11:21:47,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-07-20 11:21:47,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 295 transitions. [2020-07-20 11:21:47,759 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 295 transitions. Word has length 34 [2020-07-20 11:21:47,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:21:47,760 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 295 transitions. [2020-07-20 11:21:47,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:21:47,760 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 295 transitions. [2020-07-20 11:21:47,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-07-20 11:21:47,762 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:21:47,763 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] [2020-07-20 11:21:47,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:21:47,977 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:21:47,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:21:47,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1694730092, now seen corresponding path program 1 times [2020-07-20 11:21:47,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:21:47,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562272636] [2020-07-20 11:21:47,979 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 11:21:48,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:21:48,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 11:21:48,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:21:48,032 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-20 11:21:48,032 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:21:48,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562272636] [2020-07-20 11:21:48,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:21:48,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:21:48,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453362872] [2020-07-20 11:21:48,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:21:48,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:21:48,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:21:48,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:21:48,035 INFO L87 Difference]: Start difference. First operand 211 states and 295 transitions. Second operand 3 states. [2020-07-20 11:21:48,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:21:48,094 INFO L93 Difference]: Finished difference Result 419 states and 592 transitions. [2020-07-20 11:21:48,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:21:48,095 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-07-20 11:21:48,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:21:48,097 INFO L225 Difference]: With dead ends: 419 [2020-07-20 11:21:48,097 INFO L226 Difference]: Without dead ends: 264 [2020-07-20 11:21:48,099 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 [2020-07-20 11:21:48,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-07-20 11:21:48,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 262. [2020-07-20 11:21:48,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-07-20 11:21:48,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 369 transitions. [2020-07-20 11:21:48,120 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 369 transitions. Word has length 48 [2020-07-20 11:21:48,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:21:48,120 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 369 transitions. [2020-07-20 11:21:48,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:21:48,121 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 369 transitions. [2020-07-20 11:21:48,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-20 11:21:48,123 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:21:48,124 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] [2020-07-20 11:21:48,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:21:48,338 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:21:48,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:21:48,339 INFO L82 PathProgramCache]: Analyzing trace with hash 365198397, now seen corresponding path program 1 times [2020-07-20 11:21:48,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:21:48,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771355888] [2020-07-20 11:21:48,340 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 11:21:48,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:21:48,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 11:21:48,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:21:48,395 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-07-20 11:21:48,396 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:21:48,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771355888] [2020-07-20 11:21:48,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:21:48,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:21:48,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980489468] [2020-07-20 11:21:48,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:21:48,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:21:48,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:21:48,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:21:48,400 INFO L87 Difference]: Start difference. First operand 262 states and 369 transitions. Second operand 3 states. [2020-07-20 11:21:48,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:21:48,519 INFO L93 Difference]: Finished difference Result 527 states and 756 transitions. [2020-07-20 11:21:48,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:21:48,520 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-07-20 11:21:48,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:21:48,526 INFO L225 Difference]: With dead ends: 527 [2020-07-20 11:21:48,526 INFO L226 Difference]: Without dead ends: 192 [2020-07-20 11:21:48,528 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 [2020-07-20 11:21:48,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-07-20 11:21:48,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 189. [2020-07-20 11:21:48,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-07-20 11:21:48,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 248 transitions. [2020-07-20 11:21:48,564 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 248 transitions. Word has length 51 [2020-07-20 11:21:48,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:21:48,564 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 248 transitions. [2020-07-20 11:21:48,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:21:48,564 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 248 transitions. [2020-07-20 11:21:48,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-20 11:21:48,568 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:21:48,568 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] [2020-07-20 11:21:48,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:21:48,782 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:21:48,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:21:48,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1939547864, now seen corresponding path program 1 times [2020-07-20 11:21:48,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:21:48,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623859458] [2020-07-20 11:21:48,784 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 11:21:48,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:21:48,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 11:21:48,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:21:48,861 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-07-20 11:21:48,862 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:21:48,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [623859458] [2020-07-20 11:21:48,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:21:48,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:21:48,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490190252] [2020-07-20 11:21:48,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:21:48,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:21:48,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:21:48,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:21:48,871 INFO L87 Difference]: Start difference. First operand 189 states and 248 transitions. Second operand 3 states. [2020-07-20 11:21:48,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:21:48,920 INFO L93 Difference]: Finished difference Result 225 states and 289 transitions. [2020-07-20 11:21:48,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:21:48,921 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-07-20 11:21:48,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:21:48,925 INFO L225 Difference]: With dead ends: 225 [2020-07-20 11:21:48,925 INFO L226 Difference]: Without dead ends: 223 [2020-07-20 11:21:48,926 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 [2020-07-20 11:21:48,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-07-20 11:21:48,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2020-07-20 11:21:48,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-07-20 11:21:48,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 287 transitions. [2020-07-20 11:21:48,941 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 287 transitions. Word has length 79 [2020-07-20 11:21:48,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:21:48,941 INFO L479 AbstractCegarLoop]: Abstraction has 223 states and 287 transitions. [2020-07-20 11:21:48,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:21:48,942 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 287 transitions. [2020-07-20 11:21:48,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-07-20 11:21:48,949 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:21:48,950 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] [2020-07-20 11:21:49,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:21:49,165 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:21:49,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:21:49,166 INFO L82 PathProgramCache]: Analyzing trace with hash 2067785068, now seen corresponding path program 1 times [2020-07-20 11:21:49,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:21:49,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973332518] [2020-07-20 11:21:49,167 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 [2020-07-20 11:21:49,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:21:49,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 11:21:49,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:21:49,250 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-07-20 11:21:49,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:21:49,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973332518] [2020-07-20 11:21:49,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:21:49,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:21:49,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866998120] [2020-07-20 11:21:49,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:21:49,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:21:49,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:21:49,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:21:49,255 INFO L87 Difference]: Start difference. First operand 223 states and 287 transitions. Second operand 3 states. [2020-07-20 11:21:49,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:21:49,369 INFO L93 Difference]: Finished difference Result 365 states and 446 transitions. [2020-07-20 11:21:49,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:21:49,369 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2020-07-20 11:21:49,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:21:49,371 INFO L225 Difference]: With dead ends: 365 [2020-07-20 11:21:49,371 INFO L226 Difference]: Without dead ends: 223 [2020-07-20 11:21:49,372 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 [2020-07-20 11:21:49,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-07-20 11:21:49,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2020-07-20 11:21:49,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-07-20 11:21:49,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 283 transitions. [2020-07-20 11:21:49,389 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 283 transitions. Word has length 95 [2020-07-20 11:21:49,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:21:49,390 INFO L479 AbstractCegarLoop]: Abstraction has 223 states and 283 transitions. [2020-07-20 11:21:49,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:21:49,391 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 283 transitions. [2020-07-20 11:21:49,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-07-20 11:21:49,393 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:21:49,393 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] [2020-07-20 11:21:49,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:21:49,599 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:21:49,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:21:49,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1478800868, now seen corresponding path program 1 times [2020-07-20 11:21:49,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:21:49,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844275475] [2020-07-20 11:21:49,602 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 [2020-07-20 11:21:49,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:21:49,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 11:21:49,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:21:49,681 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2020-07-20 11:21:49,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:21:49,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844275475] [2020-07-20 11:21:49,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:21:49,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:21:49,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447167012] [2020-07-20 11:21:49,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:21:49,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:21:49,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:21:49,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:21:49,683 INFO L87 Difference]: Start difference. First operand 223 states and 283 transitions. Second operand 3 states. [2020-07-20 11:21:49,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:21:49,754 INFO L93 Difference]: Finished difference Result 413 states and 490 transitions. [2020-07-20 11:21:49,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:21:49,754 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 125 [2020-07-20 11:21:49,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:21:49,756 INFO L225 Difference]: With dead ends: 413 [2020-07-20 11:21:49,756 INFO L226 Difference]: Without dead ends: 271 [2020-07-20 11:21:49,757 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 [2020-07-20 11:21:49,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-07-20 11:21:49,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2020-07-20 11:21:49,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-07-20 11:21:49,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 331 transitions. [2020-07-20 11:21:49,770 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 331 transitions. Word has length 125 [2020-07-20 11:21:49,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:21:49,770 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 331 transitions. [2020-07-20 11:21:49,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:21:49,771 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 331 transitions. [2020-07-20 11:21:49,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-07-20 11:21:49,773 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:21:49,773 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] [2020-07-20 11:21:49,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:21:49,986 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:21:49,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:21:49,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1095214938, now seen corresponding path program 1 times [2020-07-20 11:21:49,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:21:49,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895167687] [2020-07-20 11:21:49,988 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 [2020-07-20 11:21:50,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:21:50,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 11:21:50,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:21:50,079 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 256 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2020-07-20 11:21:50,080 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:21:50,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895167687] [2020-07-20 11:21:50,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:21:50,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:21:50,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163301007] [2020-07-20 11:21:50,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:21:50,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:21:50,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:21:50,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:21:50,082 INFO L87 Difference]: Start difference. First operand 271 states and 331 transitions. Second operand 3 states. [2020-07-20 11:21:50,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:21:50,103 INFO L93 Difference]: Finished difference Result 414 states and 479 transitions. [2020-07-20 11:21:50,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:21:50,104 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 139 [2020-07-20 11:21:50,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:21:50,104 INFO L225 Difference]: With dead ends: 414 [2020-07-20 11:21:50,104 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 11:21:50,106 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 [2020-07-20 11:21:50,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 11:21:50,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 11:21:50,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 11:21:50,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 11:21:50,107 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 139 [2020-07-20 11:21:50,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:21:50,107 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 11:21:50,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:21:50,107 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 11:21:50,107 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 11:21:50,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:21:50,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 11:21:50,908 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 11:21:50,908 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:21:50,909 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:21:50,910 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 11:21:50,910 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 11:21:50,910 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 11:21:50,910 INFO L268 CegarLoopResult]: For program point L60(lines 60 189) no Hoare annotation was computed. [2020-07-20 11:21:50,910 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 8 217) no Hoare annotation was computed. [2020-07-20 11:21:50,910 INFO L268 CegarLoopResult]: For program point L151-1(lines 74 183) no Hoare annotation was computed. [2020-07-20 11:21:50,910 INFO L268 CegarLoopResult]: For program point L52(lines 52 193) no Hoare annotation was computed. [2020-07-20 11:21:50,910 INFO L268 CegarLoopResult]: For program point L85-1(lines 74 183) no Hoare annotation was computed. [2020-07-20 11:21:50,911 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)))) [2020-07-20 11:21:50,911 INFO L268 CegarLoopResult]: For program point L44(lines 44 197) no Hoare annotation was computed. [2020-07-20 11:21:50,911 INFO L268 CegarLoopResult]: For program point L135(lines 135 139) no Hoare annotation was computed. [2020-07-20 11:21:50,911 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))) [2020-07-20 11:21:50,911 INFO L268 CegarLoopResult]: For program point L36(lines 36 201) no Hoare annotation was computed. [2020-07-20 11:21:50,911 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))) [2020-07-20 11:21:50,912 INFO L264 CegarLoopResult]: At program point L53(lines 52 193) the Hoare annotation is: (and (<= main_~s__state~0 8640) (<= main_~blastFlag~0 2)) [2020-07-20 11:21:50,912 INFO L264 CegarLoopResult]: At program point L45(lines 44 197) the Hoare annotation is: (and (<= main_~s__state~0 8640) (<= main_~blastFlag~0 2)) [2020-07-20 11:21:50,912 INFO L268 CegarLoopResult]: For program point L78-1(lines 78 80) no Hoare annotation was computed. [2020-07-20 11:21:50,912 INFO L268 CegarLoopResult]: For program point L169-1(lines 74 183) no Hoare annotation was computed. [2020-07-20 11:21:50,912 INFO L264 CegarLoopResult]: At program point L37(lines 36 201) the Hoare annotation is: (and (<= main_~s__state~0 8640) (<= main_~blastFlag~0 2)) [2020-07-20 11:21:50,912 INFO L268 CegarLoopResult]: For program point L29(lines 29 204) no Hoare annotation was computed. [2020-07-20 11:21:50,914 INFO L264 CegarLoopResult]: At program point L120(lines 113 122) the Hoare annotation is: (and (<= main_~s__state~0 8640) (<= main_~blastFlag~0 2)) [2020-07-20 11:21:50,914 INFO L264 CegarLoopResult]: At program point L112(lines 105 123) the Hoare annotation is: (and (<= main_~s__state~0 8640) (<= main_~blastFlag~0 2)) [2020-07-20 11:21:50,914 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 8 217) no Hoare annotation was computed. [2020-07-20 11:21:50,915 INFO L268 CegarLoopResult]: For program point L162-1(lines 162 164) no Hoare annotation was computed. [2020-07-20 11:21:50,915 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 215) no Hoare annotation was computed. [2020-07-20 11:21:50,915 INFO L264 CegarLoopResult]: At program point L30(lines 29 204) the Hoare annotation is: (and (<= main_~s__state~0 8640) (<= main_~blastFlag~0 2)) [2020-07-20 11:21:50,915 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 8 217) the Hoare annotation is: true [2020-07-20 11:21:50,915 INFO L268 CegarLoopResult]: For program point L105(lines 105 123) no Hoare annotation was computed. [2020-07-20 11:21:50,915 INFO L268 CegarLoopResult]: For program point L72(lines 72 183) no Hoare annotation was computed. [2020-07-20 11:21:50,915 INFO L268 CegarLoopResult]: For program point L64(lines 64 187) no Hoare annotation was computed. [2020-07-20 11:21:50,916 INFO L268 CegarLoopResult]: For program point L56(lines 56 191) no Hoare annotation was computed. [2020-07-20 11:21:50,916 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-07-20 11:21:50,916 INFO L271 CegarLoopResult]: At program point L213(lines 8 217) the Hoare annotation is: true [2020-07-20 11:21:50,916 INFO L268 CegarLoopResult]: For program point L114(lines 114 118) no Hoare annotation was computed. [2020-07-20 11:21:50,916 INFO L268 CegarLoopResult]: For program point L48(lines 48 195) no Hoare annotation was computed. [2020-07-20 11:21:50,916 INFO L268 CegarLoopResult]: For program point L172(lines 172 174) no Hoare annotation was computed. [2020-07-20 11:21:50,917 INFO L268 CegarLoopResult]: For program point L106(lines 106 110) no Hoare annotation was computed. [2020-07-20 11:21:50,917 INFO L264 CegarLoopResult]: At program point L73(lines 72 183) the Hoare annotation is: (and (<= 8672 main_~s__state~0) (<= main_~blastFlag~0 3)) [2020-07-20 11:21:50,917 INFO L268 CegarLoopResult]: For program point L40(lines 40 199) no Hoare annotation was computed. [2020-07-20 11:21:50,918 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))) [2020-07-20 11:21:50,919 INFO L268 CegarLoopResult]: For program point L32(lines 32 203) no Hoare annotation was computed. [2020-07-20 11:21:50,919 INFO L264 CegarLoopResult]: At program point L57(lines 56 191) the Hoare annotation is: (and (<= main_~s__state~0 8640) (<= main_~blastFlag~0 2)) [2020-07-20 11:21:50,920 INFO L264 CegarLoopResult]: At program point L49(lines 48 195) the Hoare annotation is: (and (<= main_~s__state~0 8640) (<= main_~blastFlag~0 2)) [2020-07-20 11:21:50,920 INFO L264 CegarLoopResult]: At program point L173(lines 8 217) the Hoare annotation is: false [2020-07-20 11:21:50,920 INFO L264 CegarLoopResult]: At program point L41(lines 40 199) the Hoare annotation is: (and (<= main_~s__state~0 8640) (<= main_~blastFlag~0 2)) [2020-07-20 11:21:50,920 INFO L264 CegarLoopResult]: At program point L33(lines 32 203) the Hoare annotation is: (and (<= main_~s__state~0 8640) (<= main_~blastFlag~0 2)) [2020-07-20 11:21:50,920 INFO L268 CegarLoopResult]: For program point L68(lines 68 185) no Hoare annotation was computed. [2020-07-20 11:21:50,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:21:50 BoogieIcfgContainer [2020-07-20 11:21:50,967 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 11:21:50,971 INFO L168 Benchmark]: Toolchain (without parser) took 5804.25 ms. Allocated memory was 136.8 MB in the beginning and 249.6 MB in the end (delta: 112.7 MB). Free memory was 100.3 MB in the beginning and 194.6 MB in the end (delta: -94.3 MB). Peak memory consumption was 121.3 MB. Max. memory is 7.1 GB. [2020-07-20 11:21:50,972 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 136.8 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 11:21:50,974 INFO L168 Benchmark]: CACSL2BoogieTranslator took 381.53 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 99.9 MB in the beginning and 179.9 MB in the end (delta: -80.0 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-07-20 11:21:50,975 INFO L168 Benchmark]: Boogie Preprocessor took 34.09 ms. Allocated memory is still 200.8 MB. Free memory was 179.9 MB in the beginning and 178.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2020-07-20 11:21:50,976 INFO L168 Benchmark]: RCFGBuilder took 378.36 ms. Allocated memory is still 200.8 MB. Free memory was 178.2 MB in the beginning and 158.6 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2020-07-20 11:21:50,979 INFO L168 Benchmark]: TraceAbstraction took 5003.33 ms. Allocated memory was 200.8 MB in the beginning and 249.6 MB in the end (delta: 48.8 MB). Free memory was 157.9 MB in the beginning and 194.6 MB in the end (delta: -36.7 MB). Peak memory consumption was 114.9 MB. Max. memory is 7.1 GB. [2020-07-20 11:21:50,989 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 136.8 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 381.53 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 99.9 MB in the beginning and 179.9 MB in the end (delta: -80.0 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 34.09 ms. Allocated memory is still 200.8 MB. Free memory was 179.9 MB in the beginning and 178.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 378.36 ms. Allocated memory is still 200.8 MB. Free memory was 178.2 MB in the beginning and 158.6 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5003.33 ms. Allocated memory was 200.8 MB in the beginning and 249.6 MB in the end (delta: 48.8 MB). Free memory was 157.9 MB in the beginning and 194.6 MB in the end (delta: -36.7 MB). Peak memory consumption was 114.9 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: 4.2s, OverallIterations: 10, TraceHistogramMax: 10, AutomataDifference: 0.9s, 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, 0.2s HoareSimplificationTime, 21 FomulaSimplificationsInter, 209 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s 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...