/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 SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -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 19:52:13,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 19:52:13,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 19:52:13,861 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-21 19:52:13,900 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 19:52:13,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 19:52:13,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 19:52:13,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 19:52:13,920 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 19:52:13,924 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 19:52:13,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 19:52:13,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 19:52:13,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 19:52:13,953 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 19:52:13,956 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 19:52:13,958 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 19:52:13,962 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 19:52:13,994 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 19:52:14,040 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 19:52:14,041 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 19:52:14,043 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 19:52:14,044 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 19:52:14,044 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 19:52:14,045 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 19:52:14,045 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 19:52:14,045 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 19:52:14,046 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 19:52:14,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 19:52:14,046 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 19:52:14,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 19:52:14,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 19:52:14,047 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 19:52:14,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 19:52:14,047 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 19:52:14,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 19:52:14,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 19:52:14,048 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 19:52:14,048 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 19:52:14,048 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 19:52:14,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 19:52:14,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 19:52:14,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 19:52:14,049 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 19:52:14,049 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 19:52:14,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:52:14,050 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 19:52:14,050 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 19:52:14,050 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 -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 19:52:14,532 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 19:52:14,555 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 19:52:14,561 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 19:52:14,565 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 19:52:14,566 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 19:52:14,568 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_1a.cil.c [2020-07-21 19:52:14,723 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44bd6f7c9/6d459b6eb6a3413b993a9cdfdad73eff/FLAG4c988d35b [2020-07-21 19:52:15,570 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 19:52:15,572 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ssh-simplified/s3_srvr_1a.cil.c [2020-07-21 19:52:15,598 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44bd6f7c9/6d459b6eb6a3413b993a9cdfdad73eff/FLAG4c988d35b [2020-07-21 19:52:15,863 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44bd6f7c9/6d459b6eb6a3413b993a9cdfdad73eff [2020-07-21 19:52:15,887 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 19:52:15,891 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 19:52:15,893 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 19:52:15,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 19:52:15,900 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 19:52:15,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:52:15" (1/1) ... [2020-07-21 19:52:15,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c56470e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:52:15, skipping insertion in model container [2020-07-21 19:52:15,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:52:15" (1/1) ... [2020-07-21 19:52:15,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 19:52:15,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 19:52:16,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 19:52:16,266 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 19:52:16,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 19:52:16,475 INFO L208 MainTranslator]: Completed translation [2020-07-21 19:52:16,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:52:16 WrapperNode [2020-07-21 19:52:16,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 19:52:16,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 19:52:16,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 19:52:16,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 19:52:16,506 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:52:16" (1/1) ... [2020-07-21 19:52:16,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:52:16" (1/1) ... [2020-07-21 19:52:16,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:52:16" (1/1) ... [2020-07-21 19:52:16,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:52:16" (1/1) ... [2020-07-21 19:52:16,531 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:52:16" (1/1) ... [2020-07-21 19:52:16,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:52:16" (1/1) ... [2020-07-21 19:52:16,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:52:16" (1/1) ... [2020-07-21 19:52:16,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 19:52:16,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 19:52:16,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 19:52:16,555 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 19:52:16,557 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:52:16" (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 19:52:16,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 19:52:16,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 19:52:16,666 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 19:52:16,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 19:52:16,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-21 19:52:16,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 19:52:16,668 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-07-21 19:52:16,668 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 19:52:16,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 19:52:16,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 19:52:17,198 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 19:52:17,199 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 19:52:17,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:52:17 BoogieIcfgContainer [2020-07-21 19:52:17,208 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 19:52:17,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 19:52:17,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 19:52:17,221 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 19:52:17,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 07:52:15" (1/3) ... [2020-07-21 19:52:17,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae7fa5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:52:17, skipping insertion in model container [2020-07-21 19:52:17,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:52:16" (2/3) ... [2020-07-21 19:52:17,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae7fa5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:52:17, skipping insertion in model container [2020-07-21 19:52:17,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:52:17" (3/3) ... [2020-07-21 19:52:17,229 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_1a.cil.c [2020-07-21 19:52:17,249 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 19:52:17,265 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 19:52:17,290 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 19:52:17,334 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 19:52:17,335 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 19:52:17,335 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 19:52:17,335 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 19:52:17,336 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 19:52:17,336 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 19:52:17,336 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 19:52:17,336 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 19:52:17,367 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-07-21 19:52:17,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-07-21 19:52:17,377 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:52:17,379 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:52:17,380 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:52:17,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:52:17,389 INFO L82 PathProgramCache]: Analyzing trace with hash 2008919768, now seen corresponding path program 1 times [2020-07-21 19:52:17,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:52:17,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494545818] [2020-07-21 19:52:17,404 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) 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 19:52:17,516 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 19:52:17,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:52:17,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 19:52:17,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:52:17,607 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 19:52:17,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 19:52:17,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494545818] [2020-07-21 19:52:17,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 19:52:17,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 19:52:17,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507651945] [2020-07-21 19:52:17,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 19:52:17,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:52:17,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 19:52:17,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 19:52:17,645 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 3 states. [2020-07-21 19:52:17,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:52:17,880 INFO L93 Difference]: Finished difference Result 136 states and 224 transitions. [2020-07-21 19:52:17,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 19:52:17,884 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-07-21 19:52:17,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:52:17,907 INFO L225 Difference]: With dead ends: 136 [2020-07-21 19:52:17,908 INFO L226 Difference]: Without dead ends: 83 [2020-07-21 19:52:17,915 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 19:52:17,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-07-21 19:52:18,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-07-21 19:52:18,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-07-21 19:52:18,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 126 transitions. [2020-07-21 19:52:18,013 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 126 transitions. Word has length 8 [2020-07-21 19:52:18,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:52:18,014 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 126 transitions. [2020-07-21 19:52:18,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 19:52:18,015 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 126 transitions. [2020-07-21 19:52:18,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-21 19:52:18,016 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:52:18,017 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:52:18,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:52:18,233 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:52:18,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:52:18,234 INFO L82 PathProgramCache]: Analyzing trace with hash 2066454160, now seen corresponding path program 1 times [2020-07-21 19:52:18,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:52:18,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742424666] [2020-07-21 19:52:18,236 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) 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 19:52:18,305 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 19:52:18,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:52:18,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 19:52:18,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:52:18,342 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 19:52:18,344 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 19:52:18,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742424666] [2020-07-21 19:52:18,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 19:52:18,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 19:52:18,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2536647] [2020-07-21 19:52:18,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 19:52:18,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:52:18,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 19:52:18,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 19:52:18,364 INFO L87 Difference]: Start difference. First operand 83 states and 126 transitions. Second operand 3 states. [2020-07-21 19:52:18,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:52:18,526 INFO L93 Difference]: Finished difference Result 161 states and 253 transitions. [2020-07-21 19:52:18,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 19:52:18,528 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-07-21 19:52:18,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:52:18,532 INFO L225 Difference]: With dead ends: 161 [2020-07-21 19:52:18,532 INFO L226 Difference]: Without dead ends: 121 [2020-07-21 19:52:18,535 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 19:52:18,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-07-21 19:52:18,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2020-07-21 19:52:18,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-07-21 19:52:18,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 184 transitions. [2020-07-21 19:52:18,563 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 184 transitions. Word has length 13 [2020-07-21 19:52:18,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:52:18,563 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 184 transitions. [2020-07-21 19:52:18,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 19:52:18,564 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 184 transitions. [2020-07-21 19:52:18,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-21 19:52:18,566 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:52:18,566 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:52:18,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:52:18,782 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:52:18,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:52:18,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1216248382, now seen corresponding path program 1 times [2020-07-21 19:52:18,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:52:18,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625737383] [2020-07-21 19:52:18,786 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) 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 19:52:18,863 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 19:52:18,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:52:18,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 19:52:18,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:52:18,883 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 19:52:18,884 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 19:52:18,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1625737383] [2020-07-21 19:52:18,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 19:52:18,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 19:52:18,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828927287] [2020-07-21 19:52:18,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 19:52:18,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:52:18,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 19:52:18,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 19:52:18,888 INFO L87 Difference]: Start difference. First operand 121 states and 184 transitions. Second operand 3 states. [2020-07-21 19:52:19,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:52:19,024 INFO L93 Difference]: Finished difference Result 237 states and 369 transitions. [2020-07-21 19:52:19,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 19:52:19,026 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-21 19:52:19,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:52:19,030 INFO L225 Difference]: With dead ends: 237 [2020-07-21 19:52:19,030 INFO L226 Difference]: Without dead ends: 159 [2020-07-21 19:52:19,033 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 19:52:19,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-07-21 19:52:19,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2020-07-21 19:52:19,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-07-21 19:52:19,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 243 transitions. [2020-07-21 19:52:19,069 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 243 transitions. Word has length 19 [2020-07-21 19:52:19,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:52:19,070 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 243 transitions. [2020-07-21 19:52:19,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 19:52:19,071 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 243 transitions. [2020-07-21 19:52:19,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-21 19:52:19,073 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:52:19,074 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 19:52:19,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:52:19,289 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:52:19,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:52:19,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1623728883, now seen corresponding path program 1 times [2020-07-21 19:52:19,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:52:19,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568366345] [2020-07-21 19:52:19,291 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) 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 19:52:19,366 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:52:19,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:52:19,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 19:52:19,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:52:19,394 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 19:52:19,395 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 19:52:19,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568366345] [2020-07-21 19:52:19,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 19:52:19,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 19:52:19,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379235237] [2020-07-21 19:52:19,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 19:52:19,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:52:19,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 19:52:19,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 19:52:19,399 INFO L87 Difference]: Start difference. First operand 159 states and 243 transitions. Second operand 3 states. [2020-07-21 19:52:19,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:52:19,702 INFO L93 Difference]: Finished difference Result 371 states and 583 transitions. [2020-07-21 19:52:19,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 19:52:19,704 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-07-21 19:52:19,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:52:19,707 INFO L225 Difference]: With dead ends: 371 [2020-07-21 19:52:19,707 INFO L226 Difference]: Without dead ends: 217 [2020-07-21 19:52:19,710 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 19:52:19,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-07-21 19:52:19,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 211. [2020-07-21 19:52:19,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-07-21 19:52:19,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 295 transitions. [2020-07-21 19:52:19,740 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 295 transitions. Word has length 34 [2020-07-21 19:52:19,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:52:19,743 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 295 transitions. [2020-07-21 19:52:19,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 19:52:19,743 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 295 transitions. [2020-07-21 19:52:19,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-07-21 19:52:19,751 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:52:19,752 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 19:52:19,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:52:19,958 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:52:19,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:52:19,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1694730092, now seen corresponding path program 1 times [2020-07-21 19:52:19,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:52:19,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [18243714] [2020-07-21 19:52:19,961 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) 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 19:52:20,040 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:52:20,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:52:20,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 19:52:20,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:52:20,090 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 19:52:20,090 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 19:52:20,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [18243714] [2020-07-21 19:52:20,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 19:52:20,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 19:52:20,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011968785] [2020-07-21 19:52:20,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 19:52:20,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:52:20,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 19:52:20,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 19:52:20,097 INFO L87 Difference]: Start difference. First operand 211 states and 295 transitions. Second operand 3 states. [2020-07-21 19:52:20,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:52:20,236 INFO L93 Difference]: Finished difference Result 419 states and 592 transitions. [2020-07-21 19:52:20,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 19:52:20,237 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-07-21 19:52:20,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:52:20,241 INFO L225 Difference]: With dead ends: 419 [2020-07-21 19:52:20,241 INFO L226 Difference]: Without dead ends: 264 [2020-07-21 19:52:20,243 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 19:52:20,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-07-21 19:52:20,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 262. [2020-07-21 19:52:20,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-07-21 19:52:20,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 369 transitions. [2020-07-21 19:52:20,275 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 369 transitions. Word has length 48 [2020-07-21 19:52:20,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:52:20,276 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 369 transitions. [2020-07-21 19:52:20,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 19:52:20,277 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 369 transitions. [2020-07-21 19:52:20,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-21 19:52:20,280 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:52:20,281 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 19:52:20,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:52:20,497 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:52:20,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:52:20,498 INFO L82 PathProgramCache]: Analyzing trace with hash 365198397, now seen corresponding path program 1 times [2020-07-21 19:52:20,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:52:20,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990865108] [2020-07-21 19:52:20,500 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) 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 19:52:20,540 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 19:52:20,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:52:20,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 19:52:20,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:52:20,571 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 19:52:20,571 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 19:52:20,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990865108] [2020-07-21 19:52:20,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 19:52:20,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 19:52:20,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506824377] [2020-07-21 19:52:20,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 19:52:20,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:52:20,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 19:52:20,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 19:52:20,576 INFO L87 Difference]: Start difference. First operand 262 states and 369 transitions. Second operand 3 states. [2020-07-21 19:52:20,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:52:20,792 INFO L93 Difference]: Finished difference Result 527 states and 756 transitions. [2020-07-21 19:52:20,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 19:52:20,809 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-07-21 19:52:20,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:52:20,815 INFO L225 Difference]: With dead ends: 527 [2020-07-21 19:52:20,816 INFO L226 Difference]: Without dead ends: 192 [2020-07-21 19:52:20,821 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 19:52:20,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-07-21 19:52:20,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 189. [2020-07-21 19:52:20,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-07-21 19:52:20,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 248 transitions. [2020-07-21 19:52:20,898 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 248 transitions. Word has length 51 [2020-07-21 19:52:20,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:52:20,903 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 248 transitions. [2020-07-21 19:52:20,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 19:52:20,904 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 248 transitions. [2020-07-21 19:52:20,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-21 19:52:20,908 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:52:20,908 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 19:52:21,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:52:21,126 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:52:21,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:52:21,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1939547864, now seen corresponding path program 1 times [2020-07-21 19:52:21,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:52:21,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609048737] [2020-07-21 19:52:21,129 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) 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 19:52:21,215 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 19:52:21,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:52:21,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 19:52:21,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:52:21,275 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-07-21 19:52:21,276 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 19:52:21,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609048737] [2020-07-21 19:52:21,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 19:52:21,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 19:52:21,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416917856] [2020-07-21 19:52:21,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 19:52:21,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:52:21,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 19:52:21,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 19:52:21,281 INFO L87 Difference]: Start difference. First operand 189 states and 248 transitions. Second operand 3 states. [2020-07-21 19:52:21,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:52:21,312 INFO L93 Difference]: Finished difference Result 310 states and 379 transitions. [2020-07-21 19:52:21,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 19:52:21,313 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-07-21 19:52:21,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:52:21,315 INFO L225 Difference]: With dead ends: 310 [2020-07-21 19:52:21,315 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 19:52:21,317 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 19:52:21,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 19:52:21,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 19:52:21,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 19:52:21,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 19:52:21,320 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 79 [2020-07-21 19:52:21,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:52:21,320 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 19:52:21,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 19:52:21,321 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 19:52:21,321 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 19:52:21,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:52:21,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 19:52:22,060 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-21 19:52:22,061 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 19:52:22,061 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 19:52:22,062 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 19:52:22,062 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 19:52:22,062 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 19:52:22,062 INFO L268 CegarLoopResult]: For program point L60(lines 60 189) no Hoare annotation was computed. [2020-07-21 19:52:22,063 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 8 217) no Hoare annotation was computed. [2020-07-21 19:52:22,063 INFO L268 CegarLoopResult]: For program point L151-1(lines 74 183) no Hoare annotation was computed. [2020-07-21 19:52:22,063 INFO L268 CegarLoopResult]: For program point L52(lines 52 193) no Hoare annotation was computed. [2020-07-21 19:52:22,063 INFO L268 CegarLoopResult]: For program point L85-1(lines 74 183) no Hoare annotation was computed. [2020-07-21 19:52:22,064 INFO L264 CegarLoopResult]: At program point L176(lines 22 211) the Hoare annotation is: (let ((.cse0 (<= main_~blastFlag~0 3))) (or (and (not (= 0 main_~s__hit~0)) .cse0 (<= 8640 main_~s__state~0)) (and (<= 8672 main_~s__state~0) .cse0) (<= main_~blastFlag~0 2))) [2020-07-21 19:52:22,064 INFO L268 CegarLoopResult]: For program point L44(lines 44 197) no Hoare annotation was computed. [2020-07-21 19:52:22,064 INFO L268 CegarLoopResult]: For program point L135(lines 135 139) no Hoare annotation was computed. [2020-07-21 19:52:22,064 INFO L264 CegarLoopResult]: At program point L69(lines 68 185) the Hoare annotation is: (let ((.cse0 (<= 8640 main_~s__state~0))) (or (and (<= main_~blastFlag~0 2) .cse0) (and (not (= 0 main_~s__hit~0)) (<= main_~blastFlag~0 3) .cse0))) [2020-07-21 19:52:22,065 INFO L268 CegarLoopResult]: For program point L36(lines 36 201) no Hoare annotation was computed. [2020-07-21 19:52:22,067 INFO L264 CegarLoopResult]: At program point L61(lines 60 189) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-07-21 19:52:22,068 INFO L264 CegarLoopResult]: At program point L53(lines 52 193) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-07-21 19:52:22,068 INFO L264 CegarLoopResult]: At program point L45(lines 44 197) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-07-21 19:52:22,068 INFO L268 CegarLoopResult]: For program point L78-1(lines 78 80) no Hoare annotation was computed. [2020-07-21 19:52:22,068 INFO L268 CegarLoopResult]: For program point L169-1(lines 74 183) no Hoare annotation was computed. [2020-07-21 19:52:22,068 INFO L264 CegarLoopResult]: At program point L37(lines 36 201) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-07-21 19:52:22,068 INFO L268 CegarLoopResult]: For program point L29(lines 29 204) no Hoare annotation was computed. [2020-07-21 19:52:22,069 INFO L264 CegarLoopResult]: At program point L120(lines 113 122) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-07-21 19:52:22,069 INFO L264 CegarLoopResult]: At program point L112(lines 105 123) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-07-21 19:52:22,069 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 8 217) no Hoare annotation was computed. [2020-07-21 19:52:22,069 INFO L268 CegarLoopResult]: For program point L162-1(lines 162 164) no Hoare annotation was computed. [2020-07-21 19:52:22,069 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 215) no Hoare annotation was computed. [2020-07-21 19:52:22,070 INFO L264 CegarLoopResult]: At program point L30(lines 29 204) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-07-21 19:52:22,070 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 8 217) the Hoare annotation is: true [2020-07-21 19:52:22,070 INFO L268 CegarLoopResult]: For program point L105(lines 105 123) no Hoare annotation was computed. [2020-07-21 19:52:22,070 INFO L268 CegarLoopResult]: For program point L72(lines 72 183) no Hoare annotation was computed. [2020-07-21 19:52:22,070 INFO L268 CegarLoopResult]: For program point L64(lines 64 187) no Hoare annotation was computed. [2020-07-21 19:52:22,070 INFO L268 CegarLoopResult]: For program point L56(lines 56 191) no Hoare annotation was computed. [2020-07-21 19:52:22,071 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-07-21 19:52:22,071 INFO L271 CegarLoopResult]: At program point L213(lines 8 217) the Hoare annotation is: true [2020-07-21 19:52:22,071 INFO L268 CegarLoopResult]: For program point L114(lines 114 118) no Hoare annotation was computed. [2020-07-21 19:52:22,071 INFO L268 CegarLoopResult]: For program point L48(lines 48 195) no Hoare annotation was computed. [2020-07-21 19:52:22,071 INFO L268 CegarLoopResult]: For program point L172(lines 172 174) no Hoare annotation was computed. [2020-07-21 19:52:22,072 INFO L268 CegarLoopResult]: For program point L106(lines 106 110) no Hoare annotation was computed. [2020-07-21 19:52:22,072 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 19:52:22,072 INFO L268 CegarLoopResult]: For program point L40(lines 40 199) no Hoare annotation was computed. [2020-07-21 19:52:22,073 INFO L264 CegarLoopResult]: At program point L65(lines 64 187) the Hoare annotation is: (let ((.cse0 (<= 8640 main_~s__state~0))) (or (and (<= main_~blastFlag~0 2) .cse0) (and (not (= 0 main_~s__hit~0)) (<= main_~blastFlag~0 3) .cse0))) [2020-07-21 19:52:22,073 INFO L268 CegarLoopResult]: For program point L32(lines 32 203) no Hoare annotation was computed. [2020-07-21 19:52:22,073 INFO L264 CegarLoopResult]: At program point L57(lines 56 191) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-07-21 19:52:22,074 INFO L264 CegarLoopResult]: At program point L49(lines 48 195) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-07-21 19:52:22,074 INFO L264 CegarLoopResult]: At program point L173(lines 8 217) the Hoare annotation is: false [2020-07-21 19:52:22,074 INFO L264 CegarLoopResult]: At program point L41(lines 40 199) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-07-21 19:52:22,074 INFO L264 CegarLoopResult]: At program point L33(lines 32 203) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-07-21 19:52:22,075 INFO L268 CegarLoopResult]: For program point L68(lines 68 185) no Hoare annotation was computed. [2020-07-21 19:52:22,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 07:52:22 BoogieIcfgContainer [2020-07-21 19:52:22,109 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 19:52:22,113 INFO L168 Benchmark]: Toolchain (without parser) took 6223.32 ms. Allocated memory was 143.1 MB in the beginning and 230.7 MB in the end (delta: 87.6 MB). Free memory was 99.1 MB in the beginning and 79.3 MB in the end (delta: 19.8 MB). Peak memory consumption was 107.3 MB. Max. memory is 7.1 GB. [2020-07-21 19:52:22,114 INFO L168 Benchmark]: CDTParser took 0.85 ms. Allocated memory is still 143.1 MB. Free memory is still 117.7 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 19:52:22,115 INFO L168 Benchmark]: CACSL2BoogieTranslator took 589.39 ms. Allocated memory was 143.1 MB in the beginning and 202.4 MB in the end (delta: 59.2 MB). Free memory was 98.7 MB in the beginning and 180.8 MB in the end (delta: -82.2 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-07-21 19:52:22,116 INFO L168 Benchmark]: Boogie Preprocessor took 69.86 ms. Allocated memory is still 202.4 MB. Free memory was 180.8 MB in the beginning and 179.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-21 19:52:22,117 INFO L168 Benchmark]: RCFGBuilder took 654.28 ms. Allocated memory is still 202.4 MB. Free memory was 179.4 MB in the beginning and 160.0 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. [2020-07-21 19:52:22,118 INFO L168 Benchmark]: TraceAbstraction took 4897.45 ms. Allocated memory was 202.4 MB in the beginning and 230.7 MB in the end (delta: 28.3 MB). Free memory was 159.0 MB in the beginning and 79.3 MB in the end (delta: 79.6 MB). Peak memory consumption was 108.0 MB. Max. memory is 7.1 GB. [2020-07-21 19:52:22,122 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.85 ms. Allocated memory is still 143.1 MB. Free memory is still 117.7 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 589.39 ms. Allocated memory was 143.1 MB in the beginning and 202.4 MB in the end (delta: 59.2 MB). Free memory was 98.7 MB in the beginning and 180.8 MB in the end (delta: -82.2 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 69.86 ms. Allocated memory is still 202.4 MB. Free memory was 180.8 MB in the beginning and 179.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 654.28 ms. Allocated memory is still 202.4 MB. Free memory was 179.4 MB in the beginning and 160.0 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4897.45 ms. Allocated memory was 202.4 MB in the beginning and 230.7 MB in the end (delta: 28.3 MB). Free memory was 159.0 MB in the beginning and 79.3 MB in the end (delta: 79.6 MB). Peak memory consumption was 108.0 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: blastFlag <= 2 - InvariantResult [Line: 64]: Loop Invariant Derived loop invariant: (blastFlag <= 2 && 8640 <= s__state) || ((!(0 == s__hit) && blastFlag <= 3) && 8640 <= s__state) - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 113]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 68]: Loop Invariant Derived loop invariant: (blastFlag <= 2 && 8640 <= s__state) || ((!(0 == s__hit) && blastFlag <= 3) && 8640 <= s__state) - InvariantResult [Line: 105]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (((!(0 == s__hit) && blastFlag <= 3) && 8640 <= s__state) || (8672 <= s__state && blastFlag <= 3)) || blastFlag <= 2 - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 60]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: 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: 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: 7, TraceHistogramMax: 6, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 457 SDtfs, 250 SDslu, 321 SDs, 0 SdLazy, 196 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 245 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=262occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 21 LocationsWithAnnotation, 21 PreInvPairs, 86 NumberOfFragments, 106 HoareAnnotationTreeSize, 21 FomulaSimplifications, 585 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 21 FomulaSimplificationsInter, 60 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 252 NumberOfCodeBlocks, 169 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 245 ConstructedInterpolants, 0 QuantifiedInterpolants, 25301 SizeOfPredicates, 6 NumberOfNonLiveVariables, 414 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 202/202 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...