/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 BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/psyco/psyco_io_1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 23:04:24,601 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-21 23:04:24,656 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 23:04:24,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 23:04:24,663 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 23:04:24,665 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 23:04:24,668 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 23:04:24,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 23:04:24,673 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 23:04:24,679 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 23:04:24,685 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 23:04:24,689 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 23:04:24,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 23:04:24,691 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 23:04:24,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 23:04:24,707 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 23:04:24,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 23:04:24,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 23:04:24,710 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 23:04:24,745 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 23:04:24,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 23:04:24,748 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 23:04:24,753 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 23:04:24,754 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 23:04:24,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 23:04:24,754 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 23:04:24,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 23:04:24,754 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 23:04:24,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 23:04:24,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 23:04:24,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 23:04:24,755 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 23:04:24,758 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 23:04:24,758 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 23:04:24,758 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 23:04:24,758 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 23:04:24,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 23:04:24,759 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 23:04:24,761 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 23:04:24,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 23:04:24,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 23:04:24,761 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 23:04:24,761 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 23:04:24,762 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 23:04:24,762 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 23:04:24,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:24,762 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 23:04:24,766 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 23:04:24,766 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 -> BIGGEST_EQUIVALENCE_CLASS 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 -> 4 [2020-07-21 23:04:25,108 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 23:04:25,132 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 23:04:25,136 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 23:04:25,138 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 23:04:25,138 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 23:04:25,139 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_io_1.c [2020-07-21 23:04:25,220 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c11a373c8/50b30ca9760e4e84ba443c4b9bf33ba7/FLAGfd7a0c90d [2020-07-21 23:04:25,763 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 23:04:25,764 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/psyco/psyco_io_1.c [2020-07-21 23:04:25,775 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c11a373c8/50b30ca9760e4e84ba443c4b9bf33ba7/FLAGfd7a0c90d [2020-07-21 23:04:26,078 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c11a373c8/50b30ca9760e4e84ba443c4b9bf33ba7 [2020-07-21 23:04:26,091 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 23:04:26,095 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 23:04:26,096 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 23:04:26,096 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 23:04:26,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 23:04:26,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:04:26" (1/1) ... [2020-07-21 23:04:26,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17e24772 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:04:26, skipping insertion in model container [2020-07-21 23:04:26,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:04:26" (1/1) ... [2020-07-21 23:04:26,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 23:04:26,167 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 23:04:26,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 23:04:26,494 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 23:04:26,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 23:04:26,548 INFO L208 MainTranslator]: Completed translation [2020-07-21 23:04:26,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:04:26 WrapperNode [2020-07-21 23:04:26,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 23:04:26,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 23:04:26,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 23:04:26,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 23:04:26,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:04:26" (1/1) ... [2020-07-21 23:04:26,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:04:26" (1/1) ... [2020-07-21 23:04:26,687 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:04:26" (1/1) ... [2020-07-21 23:04:26,688 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:04:26" (1/1) ... [2020-07-21 23:04:26,707 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:04:26" (1/1) ... [2020-07-21 23:04:26,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:04:26" (1/1) ... [2020-07-21 23:04:26,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:04:26" (1/1) ... [2020-07-21 23:04:26,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 23:04:26,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 23:04:26,740 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 23:04:26,740 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 23:04:26,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:04:26" (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 23:04:26,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 23:04:26,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 23:04:26,813 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 23:04:26,813 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 23:04:26,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 23:04:26,815 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 23:04:26,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 23:04:26,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 23:04:27,382 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 23:04:27,383 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-21 23:04:27,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:04:27 BoogieIcfgContainer [2020-07-21 23:04:27,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 23:04:27,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 23:04:27,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 23:04:27,396 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 23:04:27,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:04:26" (1/3) ... [2020-07-21 23:04:27,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f2c0861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:04:27, skipping insertion in model container [2020-07-21 23:04:27,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:04:26" (2/3) ... [2020-07-21 23:04:27,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f2c0861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:04:27, skipping insertion in model container [2020-07-21 23:04:27,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:04:27" (3/3) ... [2020-07-21 23:04:27,401 INFO L109 eAbstractionObserver]: Analyzing ICFG psyco_io_1.c [2020-07-21 23:04:27,414 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 23:04:27,424 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 23:04:27,444 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 23:04:27,473 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 23:04:27,473 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 23:04:27,473 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 23:04:27,473 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 23:04:27,474 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 23:04:27,474 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 23:04:27,475 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 23:04:27,475 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 23:04:27,499 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-07-21 23:04:27,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-21 23:04:27,507 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:04:27,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:04:27,508 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:04:27,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:04:27,514 INFO L82 PathProgramCache]: Analyzing trace with hash -901605196, now seen corresponding path program 1 times [2020-07-21 23:04:27,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:04:27,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506734306] [2020-07-21 23:04:27,523 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 23:04:27,635 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:04:27,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:04:27,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 23:04:27,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:04:27,682 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 23:04:27,683 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:04:27,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506734306] [2020-07-21 23:04:27,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:04:27,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 23:04:27,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457021669] [2020-07-21 23:04:27,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 23:04:27,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:04:27,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 23:04:27,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 23:04:27,712 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 2 states. [2020-07-21 23:04:27,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:04:27,743 INFO L93 Difference]: Finished difference Result 136 states and 250 transitions. [2020-07-21 23:04:27,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 23:04:27,745 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-07-21 23:04:27,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:04:27,759 INFO L225 Difference]: With dead ends: 136 [2020-07-21 23:04:27,760 INFO L226 Difference]: Without dead ends: 61 [2020-07-21 23:04:27,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 23:04:27,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-07-21 23:04:27,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-07-21 23:04:27,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-07-21 23:04:27,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 91 transitions. [2020-07-21 23:04:27,813 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 91 transitions. Word has length 13 [2020-07-21 23:04:27,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:04:27,813 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 91 transitions. [2020-07-21 23:04:27,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 23:04:27,814 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 91 transitions. [2020-07-21 23:04:27,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-21 23:04:27,815 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:04:27,815 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:04:28,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:28,017 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:04:28,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:04:28,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1647463811, now seen corresponding path program 1 times [2020-07-21 23:04:28,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:04:28,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294623344] [2020-07-21 23:04:28,020 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 23:04:28,084 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:04:28,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:04:28,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 23:04:28,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:04:28,117 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 23:04:28,117 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:04:28,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294623344] [2020-07-21 23:04:28,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:04:28,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:04:28,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333398699] [2020-07-21 23:04:28,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:04:28,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:04:28,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:04:28,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:04:28,124 INFO L87 Difference]: Start difference. First operand 61 states and 91 transitions. Second operand 3 states. [2020-07-21 23:04:28,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:04:28,202 INFO L93 Difference]: Finished difference Result 119 states and 180 transitions. [2020-07-21 23:04:28,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:04:28,203 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-07-21 23:04:28,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:04:28,206 INFO L225 Difference]: With dead ends: 119 [2020-07-21 23:04:28,209 INFO L226 Difference]: Without dead ends: 64 [2020-07-21 23:04:28,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 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 23:04:28,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-07-21 23:04:28,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-07-21 23:04:28,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-07-21 23:04:28,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 94 transitions. [2020-07-21 23:04:28,233 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 94 transitions. Word has length 14 [2020-07-21 23:04:28,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:04:28,234 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 94 transitions. [2020-07-21 23:04:28,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:04:28,234 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 94 transitions. [2020-07-21 23:04:28,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-21 23:04:28,235 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:04:28,235 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:04:28,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:28,450 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:04:28,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:04:28,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1212559863, now seen corresponding path program 1 times [2020-07-21 23:04:28,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:04:28,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62584677] [2020-07-21 23:04:28,453 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 23:04:28,510 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:04:28,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:04:28,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 23:04:28,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:04:28,541 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 23:04:28,542 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:04:28,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62584677] [2020-07-21 23:04:28,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:04:28,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:04:28,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040360910] [2020-07-21 23:04:28,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:04:28,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:04:28,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:04:28,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:04:28,545 INFO L87 Difference]: Start difference. First operand 64 states and 94 transitions. Second operand 3 states. [2020-07-21 23:04:28,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:04:28,592 INFO L93 Difference]: Finished difference Result 113 states and 169 transitions. [2020-07-21 23:04:28,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:04:28,593 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-21 23:04:28,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:04:28,594 INFO L225 Difference]: With dead ends: 113 [2020-07-21 23:04:28,594 INFO L226 Difference]: Without dead ends: 56 [2020-07-21 23:04:28,595 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 23:04:28,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-07-21 23:04:28,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-07-21 23:04:28,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-07-21 23:04:28,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 80 transitions. [2020-07-21 23:04:28,604 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 80 transitions. Word has length 19 [2020-07-21 23:04:28,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:04:28,605 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 80 transitions. [2020-07-21 23:04:28,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:04:28,605 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 80 transitions. [2020-07-21 23:04:28,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-21 23:04:28,606 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:04:28,607 INFO L422 BasicCegarLoop]: trace histogram [2, 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 23:04:28,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:28,820 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:04:28,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:04:28,821 INFO L82 PathProgramCache]: Analyzing trace with hash -2054021688, now seen corresponding path program 1 times [2020-07-21 23:04:28,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:04:28,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846102768] [2020-07-21 23:04:28,822 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 23:04:28,905 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:04:28,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:04:28,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 23:04:28,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:04:28,921 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 23:04:28,921 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:04:28,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846102768] [2020-07-21 23:04:28,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:04:28,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:04:28,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957353028] [2020-07-21 23:04:28,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:04:28,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:04:28,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:04:28,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:04:28,924 INFO L87 Difference]: Start difference. First operand 56 states and 80 transitions. Second operand 3 states. [2020-07-21 23:04:28,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:04:28,996 INFO L93 Difference]: Finished difference Result 140 states and 210 transitions. [2020-07-21 23:04:28,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:04:28,996 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-07-21 23:04:28,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:04:28,998 INFO L225 Difference]: With dead ends: 140 [2020-07-21 23:04:28,998 INFO L226 Difference]: Without dead ends: 94 [2020-07-21 23:04:28,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 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 23:04:28,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-07-21 23:04:29,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 91. [2020-07-21 23:04:29,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-07-21 23:04:29,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 132 transitions. [2020-07-21 23:04:29,009 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 132 transitions. Word has length 24 [2020-07-21 23:04:29,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:04:29,010 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 132 transitions. [2020-07-21 23:04:29,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:04:29,010 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 132 transitions. [2020-07-21 23:04:29,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-21 23:04:29,011 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:04:29,011 INFO L422 BasicCegarLoop]: trace histogram [2, 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 23:04:29,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:29,226 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:04:29,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:04:29,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1279925660, now seen corresponding path program 1 times [2020-07-21 23:04:29,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:04:29,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158950862] [2020-07-21 23:04:29,227 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 23:04:29,296 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:04:29,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:04:29,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 23:04:29,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:04:29,320 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 23:04:29,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:04:29,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [158950862] [2020-07-21 23:04:29,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:04:29,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:04:29,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051859498] [2020-07-21 23:04:29,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:04:29,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:04:29,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:04:29,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:04:29,326 INFO L87 Difference]: Start difference. First operand 91 states and 132 transitions. Second operand 3 states. [2020-07-21 23:04:29,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:04:29,383 INFO L93 Difference]: Finished difference Result 180 states and 262 transitions. [2020-07-21 23:04:29,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:04:29,386 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-07-21 23:04:29,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:04:29,388 INFO L225 Difference]: With dead ends: 180 [2020-07-21 23:04:29,389 INFO L226 Difference]: Without dead ends: 101 [2020-07-21 23:04:29,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 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 23:04:29,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-07-21 23:04:29,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2020-07-21 23:04:29,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-07-21 23:04:29,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 140 transitions. [2020-07-21 23:04:29,416 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 140 transitions. Word has length 25 [2020-07-21 23:04:29,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:04:29,416 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 140 transitions. [2020-07-21 23:04:29,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:04:29,417 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 140 transitions. [2020-07-21 23:04:29,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-21 23:04:29,422 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:04:29,422 INFO L422 BasicCegarLoop]: trace histogram [3, 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 23:04:29,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:29,637 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:04:29,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:04:29,638 INFO L82 PathProgramCache]: Analyzing trace with hash -964230168, now seen corresponding path program 1 times [2020-07-21 23:04:29,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:04:29,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108220400] [2020-07-21 23:04:29,640 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 23:04:29,692 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:04:29,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:04:29,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 23:04:29,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:04:29,711 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 23:04:29,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:04:29,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108220400] [2020-07-21 23:04:29,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:04:29,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:04:29,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005957445] [2020-07-21 23:04:29,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:04:29,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:04:29,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:04:29,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:04:29,716 INFO L87 Difference]: Start difference. First operand 99 states and 140 transitions. Second operand 3 states. [2020-07-21 23:04:29,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:04:29,747 INFO L93 Difference]: Finished difference Result 164 states and 234 transitions. [2020-07-21 23:04:29,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:04:29,748 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-07-21 23:04:29,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:04:29,749 INFO L225 Difference]: With dead ends: 164 [2020-07-21 23:04:29,749 INFO L226 Difference]: Without dead ends: 77 [2020-07-21 23:04:29,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 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 23:04:29,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-07-21 23:04:29,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-07-21 23:04:29,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-07-21 23:04:29,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 105 transitions. [2020-07-21 23:04:29,758 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 105 transitions. Word has length 36 [2020-07-21 23:04:29,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:04:29,758 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 105 transitions. [2020-07-21 23:04:29,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:04:29,758 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 105 transitions. [2020-07-21 23:04:29,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-21 23:04:29,760 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:04:29,760 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 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, 1, 1, 1, 1, 1] [2020-07-21 23:04:29,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:29,962 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:04:29,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:04:29,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1856126908, now seen corresponding path program 1 times [2020-07-21 23:04:29,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:04:29,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510193479] [2020-07-21 23:04:29,964 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 23:04:30,032 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:04:30,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:04:30,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 23:04:30,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:04:30,061 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 23:04:30,061 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:04:30,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1510193479] [2020-07-21 23:04:30,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:04:30,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 23:04:30,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023804527] [2020-07-21 23:04:30,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 23:04:30,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:04:30,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 23:04:30,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 23:04:30,064 INFO L87 Difference]: Start difference. First operand 77 states and 105 transitions. Second operand 4 states. [2020-07-21 23:04:30,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:04:30,116 INFO L93 Difference]: Finished difference Result 80 states and 108 transitions. [2020-07-21 23:04:30,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 23:04:30,117 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-07-21 23:04:30,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:04:30,118 INFO L225 Difference]: With dead ends: 80 [2020-07-21 23:04:30,118 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 23:04:30,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 23:04:30,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 23:04:30,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 23:04:30,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 23:04:30,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 23:04:30,121 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2020-07-21 23:04:30,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:04:30,121 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 23:04:30,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 23:04:30,121 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 23:04:30,121 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 23:04:30,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:30,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 23:04:30,477 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 23:04:30,478 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 23:04:30,478 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 23:04:30,478 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 23:04:30,478 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 23:04:30,478 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 23:04:30,478 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 23:04:30,479 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 344) no Hoare annotation was computed. [2020-07-21 23:04:30,479 INFO L268 CegarLoopResult]: For program point L36(lines 36 47) no Hoare annotation was computed. [2020-07-21 23:04:30,479 INFO L268 CegarLoopResult]: For program point L86(lines 86 101) no Hoare annotation was computed. [2020-07-21 23:04:30,479 INFO L268 CegarLoopResult]: For program point L53(lines 53 104) no Hoare annotation was computed. [2020-07-21 23:04:30,479 INFO L268 CegarLoopResult]: For program point L202(lines 202 217) no Hoare annotation was computed. [2020-07-21 23:04:30,480 INFO L268 CegarLoopResult]: For program point L70(lines 70 85) no Hoare annotation was computed. [2020-07-21 23:04:30,480 INFO L268 CegarLoopResult]: For program point L318(lines 318 333) no Hoare annotation was computed. [2020-07-21 23:04:30,480 INFO L268 CegarLoopResult]: For program point L186(lines 186 201) no Hoare annotation was computed. [2020-07-21 23:04:30,480 INFO L268 CegarLoopResult]: For program point L54(lines 54 69) no Hoare annotation was computed. [2020-07-21 23:04:30,480 INFO L264 CegarLoopResult]: At program point L335(lines 23 339) the Hoare annotation is: (let ((.cse0 (= 0 main_~this_sink~0))) (or (and (= 0 main_~q~0) .cse0) (and .cse0 (= 2 main_~q~0)) (and (<= 3 main_~q~0) (not .cse0)))) [2020-07-21 23:04:30,481 INFO L268 CegarLoopResult]: For program point L302(lines 302 317) no Hoare annotation was computed. [2020-07-21 23:04:30,481 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 344) no Hoare annotation was computed. [2020-07-21 23:04:30,481 INFO L268 CegarLoopResult]: For program point L170(lines 170 185) no Hoare annotation was computed. [2020-07-21 23:04:30,481 INFO L268 CegarLoopResult]: For program point L286(lines 286 301) no Hoare annotation was computed. [2020-07-21 23:04:30,481 INFO L268 CegarLoopResult]: For program point L154(lines 154 169) no Hoare annotation was computed. [2020-07-21 23:04:30,482 INFO L268 CegarLoopResult]: For program point L88(lines 88 99) no Hoare annotation was computed. [2020-07-21 23:04:30,482 INFO L268 CegarLoopResult]: For program point L270(lines 270 285) no Hoare annotation was computed. [2020-07-21 23:04:30,482 INFO L268 CegarLoopResult]: For program point L204(lines 204 215) no Hoare annotation was computed. [2020-07-21 23:04:30,482 INFO L268 CegarLoopResult]: For program point L138(lines 138 153) no Hoare annotation was computed. [2020-07-21 23:04:30,482 INFO L268 CegarLoopResult]: For program point L105(lines 105 220) no Hoare annotation was computed. [2020-07-21 23:04:30,483 INFO L268 CegarLoopResult]: For program point L72(lines 72 83) no Hoare annotation was computed. [2020-07-21 23:04:30,483 INFO L268 CegarLoopResult]: For program point L320(lines 320 331) no Hoare annotation was computed. [2020-07-21 23:04:30,483 INFO L268 CegarLoopResult]: For program point L254(lines 254 269) no Hoare annotation was computed. [2020-07-21 23:04:30,483 INFO L268 CegarLoopResult]: For program point L221(lines 221 336) no Hoare annotation was computed. [2020-07-21 23:04:30,483 INFO L268 CegarLoopResult]: For program point L188(lines 188 199) no Hoare annotation was computed. [2020-07-21 23:04:30,483 INFO L268 CegarLoopResult]: For program point L122(lines 122 137) no Hoare annotation was computed. [2020-07-21 23:04:30,484 INFO L268 CegarLoopResult]: For program point L56(lines 56 67) no Hoare annotation was computed. [2020-07-21 23:04:30,484 INFO L264 CegarLoopResult]: At program point L23-2(lines 23 339) the Hoare annotation is: (let ((.cse0 (= 0 main_~this_sink~0))) (or (and (= 0 main_~q~0) .cse0) (and (<= 3 main_~q~0) (not .cse0)))) [2020-07-21 23:04:30,484 INFO L268 CegarLoopResult]: For program point L23-3(lines 23 339) no Hoare annotation was computed. [2020-07-21 23:04:30,484 INFO L268 CegarLoopResult]: For program point L304(lines 304 315) no Hoare annotation was computed. [2020-07-21 23:04:30,484 INFO L268 CegarLoopResult]: For program point L238(lines 238 253) no Hoare annotation was computed. [2020-07-21 23:04:30,484 INFO L268 CegarLoopResult]: For program point L172(lines 172 183) no Hoare annotation was computed. [2020-07-21 23:04:30,485 INFO L268 CegarLoopResult]: For program point L106(lines 106 121) no Hoare annotation was computed. [2020-07-21 23:04:30,485 INFO L268 CegarLoopResult]: For program point L40(lines 40 42) no Hoare annotation was computed. [2020-07-21 23:04:30,485 INFO L268 CegarLoopResult]: For program point L288(lines 288 299) no Hoare annotation was computed. [2020-07-21 23:04:30,485 INFO L268 CegarLoopResult]: For program point L222(lines 222 237) no Hoare annotation was computed. [2020-07-21 23:04:30,485 INFO L268 CegarLoopResult]: For program point L156(lines 156 167) no Hoare annotation was computed. [2020-07-21 23:04:30,486 INFO L268 CegarLoopResult]: For program point L272(lines 272 283) no Hoare annotation was computed. [2020-07-21 23:04:30,486 INFO L268 CegarLoopResult]: For program point L140(lines 140 151) no Hoare annotation was computed. [2020-07-21 23:04:30,486 INFO L268 CegarLoopResult]: For program point L256(lines 256 267) no Hoare annotation was computed. [2020-07-21 23:04:30,486 INFO L268 CegarLoopResult]: For program point L124(lines 124 135) no Hoare annotation was computed. [2020-07-21 23:04:30,486 INFO L268 CegarLoopResult]: For program point L240(lines 240 251) no Hoare annotation was computed. [2020-07-21 23:04:30,486 INFO L268 CegarLoopResult]: For program point L108(lines 108 119) no Hoare annotation was computed. [2020-07-21 23:04:30,486 INFO L268 CegarLoopResult]: For program point L224(lines 224 235) no Hoare annotation was computed. [2020-07-21 23:04:30,487 INFO L268 CegarLoopResult]: For program point L92(lines 92 94) no Hoare annotation was computed. [2020-07-21 23:04:30,487 INFO L268 CegarLoopResult]: For program point L208(lines 208 210) no Hoare annotation was computed. [2020-07-21 23:04:30,487 INFO L268 CegarLoopResult]: For program point L76(lines 76 78) no Hoare annotation was computed. [2020-07-21 23:04:30,487 INFO L268 CegarLoopResult]: For program point L324(lines 324 326) no Hoare annotation was computed. [2020-07-21 23:04:30,487 INFO L268 CegarLoopResult]: For program point L192(lines 192 194) no Hoare annotation was computed. [2020-07-21 23:04:30,487 INFO L268 CegarLoopResult]: For program point L60(lines 60 62) no Hoare annotation was computed. [2020-07-21 23:04:30,488 INFO L268 CegarLoopResult]: For program point L308(lines 308 310) no Hoare annotation was computed. [2020-07-21 23:04:30,488 INFO L268 CegarLoopResult]: For program point L176(lines 176 178) no Hoare annotation was computed. [2020-07-21 23:04:30,488 INFO L264 CegarLoopResult]: At program point L325(lines 13 344) the Hoare annotation is: false [2020-07-21 23:04:30,488 INFO L268 CegarLoopResult]: For program point L292(lines 292 294) no Hoare annotation was computed. [2020-07-21 23:04:30,488 INFO L268 CegarLoopResult]: For program point L160(lines 160 162) no Hoare annotation was computed. [2020-07-21 23:04:30,488 INFO L268 CegarLoopResult]: For program point L276(lines 276 278) no Hoare annotation was computed. [2020-07-21 23:04:30,489 INFO L268 CegarLoopResult]: For program point L144(lines 144 146) no Hoare annotation was computed. [2020-07-21 23:04:30,489 INFO L268 CegarLoopResult]: For program point L260(lines 260 262) no Hoare annotation was computed. [2020-07-21 23:04:30,489 INFO L268 CegarLoopResult]: For program point L128(lines 128 130) no Hoare annotation was computed. [2020-07-21 23:04:30,489 INFO L268 CegarLoopResult]: For program point L244(lines 244 246) no Hoare annotation was computed. [2020-07-21 23:04:30,489 INFO L268 CegarLoopResult]: For program point L112(lines 112 114) no Hoare annotation was computed. [2020-07-21 23:04:30,489 INFO L268 CegarLoopResult]: For program point L228(lines 228 230) no Hoare annotation was computed. [2020-07-21 23:04:30,490 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 343) no Hoare annotation was computed. [2020-07-21 23:04:30,490 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 344) the Hoare annotation is: true [2020-07-21 23:04:30,490 INFO L268 CegarLoopResult]: For program point L33(lines 33 52) no Hoare annotation was computed. [2020-07-21 23:04:30,490 INFO L268 CegarLoopResult]: For program point L34(lines 34 49) no Hoare annotation was computed. [2020-07-21 23:04:30,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:04:30 BoogieIcfgContainer [2020-07-21 23:04:30,515 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 23:04:30,519 INFO L168 Benchmark]: Toolchain (without parser) took 4424.78 ms. Allocated memory was 137.9 MB in the beginning and 234.4 MB in the end (delta: 96.5 MB). Free memory was 102.4 MB in the beginning and 113.4 MB in the end (delta: -11.1 MB). Peak memory consumption was 85.4 MB. Max. memory is 7.1 GB. [2020-07-21 23:04:30,520 INFO L168 Benchmark]: CDTParser took 0.61 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 23:04:30,521 INFO L168 Benchmark]: CACSL2BoogieTranslator took 454.16 ms. Allocated memory is still 137.9 MB. Free memory was 102.1 MB in the beginning and 89.6 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-07-21 23:04:30,522 INFO L168 Benchmark]: Boogie Preprocessor took 189.12 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 89.6 MB in the beginning and 178.8 MB in the end (delta: -89.2 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-07-21 23:04:30,523 INFO L168 Benchmark]: RCFGBuilder took 650.10 ms. Allocated memory is still 201.9 MB. Free memory was 178.8 MB in the beginning and 151.9 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2020-07-21 23:04:30,525 INFO L168 Benchmark]: TraceAbstraction took 3124.30 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 151.3 MB in the beginning and 113.4 MB in the end (delta: 37.9 MB). Peak memory consumption was 70.4 MB. Max. memory is 7.1 GB. [2020-07-21 23:04:30,529 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 454.16 ms. Allocated memory is still 137.9 MB. Free memory was 102.1 MB in the beginning and 89.6 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 189.12 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 89.6 MB in the beginning and 178.8 MB in the end (delta: -89.2 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 650.10 ms. Allocated memory is still 201.9 MB. Free memory was 178.8 MB in the beginning and 151.9 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3124.30 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 151.3 MB in the beginning and 113.4 MB in the end (delta: 37.9 MB). Peak memory consumption was 70.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 343]: 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: 23]: Loop Invariant Derived loop invariant: ((0 == q && 0 == this_sink) || (0 == this_sink && 2 == q)) || (3 <= q && !(0 == this_sink)) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (0 == q && 0 == this_sink) || (3 <= q && !(0 == this_sink)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 549 SDtfs, 190 SDslu, 291 SDs, 0 SdLazy, 87 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 162 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred 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: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 14 NumberOfFragments, 44 HoareAnnotationTreeSize, 7 FomulaSimplifications, 29 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 9 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 168 NumberOfCodeBlocks, 157 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 161 ConstructedInterpolants, 0 QuantifiedInterpolants, 6831 SizeOfPredicates, 3 NumberOfNonLiveVariables, 849 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 27/27 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...