/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/eca-rers2012/Problem10_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 01:27:22,380 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-21 01:27:22,410 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 01:27:22,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 01:27:22,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 01:27:22,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 01:27:22,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 01:27:22,416 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 01:27:22,418 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 01:27:22,420 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 01:27:22,422 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 01:27:22,423 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 01:27:22,425 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 01:27:22,426 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 01:27:22,428 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 01:27:22,440 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 01:27:22,456 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 01:27:22,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 01:27:22,458 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 01:27:22,458 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 01:27:22,458 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 01:27:22,459 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 01:27:22,459 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 01:27:22,459 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 01:27:22,459 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 01:27:22,459 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 01:27:22,459 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 01:27:22,460 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 01:27:22,460 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 01:27:22,460 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 01:27:22,460 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 01:27:22,460 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 01:27:22,461 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 01:27:22,461 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 01:27:22,461 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 01:27:22,461 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 01:27:22,461 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 01:27:22,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 01:27:22,462 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 01:27:22,462 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 01:27:22,462 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 01:27:22,462 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 01:27:22,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:22,463 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 01:27:22,463 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 01:27:22,463 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 01:27:22,752 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 01:27:22,765 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 01:27:22,769 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 01:27:22,770 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 01:27:22,771 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 01:27:22,771 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label21.c [2020-07-21 01:27:22,831 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c677050fc/0efd311efe3e4b11bb6c647f8ba6dc5a/FLAGbbbf73fb9 [2020-07-21 01:27:23,442 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 01:27:23,443 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label21.c [2020-07-21 01:27:23,460 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c677050fc/0efd311efe3e4b11bb6c647f8ba6dc5a/FLAGbbbf73fb9 [2020-07-21 01:27:23,695 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c677050fc/0efd311efe3e4b11bb6c647f8ba6dc5a [2020-07-21 01:27:23,707 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 01:27:23,710 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 01:27:23,712 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 01:27:23,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 01:27:23,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 01:27:23,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:27:23" (1/1) ... [2020-07-21 01:27:23,723 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36e4754b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:23, skipping insertion in model container [2020-07-21 01:27:23,723 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:27:23" (1/1) ... [2020-07-21 01:27:23,732 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 01:27:23,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 01:27:24,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:27:24,479 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 01:27:24,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:27:24,584 INFO L208 MainTranslator]: Completed translation [2020-07-21 01:27:24,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:24 WrapperNode [2020-07-21 01:27:24,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 01:27:24,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 01:27:24,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 01:27:24,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 01:27:24,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:24" (1/1) ... [2020-07-21 01:27:24,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:24" (1/1) ... [2020-07-21 01:27:24,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:24" (1/1) ... [2020-07-21 01:27:24,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:24" (1/1) ... [2020-07-21 01:27:24,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:24" (1/1) ... [2020-07-21 01:27:24,744 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:24" (1/1) ... [2020-07-21 01:27:24,757 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:24" (1/1) ... [2020-07-21 01:27:24,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 01:27:24,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 01:27:24,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 01:27:24,766 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 01:27:24,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:24" (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 01:27:24,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 01:27:24,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 01:27:24,841 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 01:27:24,841 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 01:27:24,841 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 01:27:24,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 01:27:24,842 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 01:27:24,842 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 01:27:24,842 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 01:27:24,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 01:27:24,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 01:27:26,100 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 01:27:26,100 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 01:27:26,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:27:26 BoogieIcfgContainer [2020-07-21 01:27:26,107 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 01:27:26,109 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 01:27:26,109 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 01:27:26,113 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 01:27:26,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:27:23" (1/3) ... [2020-07-21 01:27:26,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@151db7c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:27:26, skipping insertion in model container [2020-07-21 01:27:26,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:24" (2/3) ... [2020-07-21 01:27:26,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@151db7c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:27:26, skipping insertion in model container [2020-07-21 01:27:26,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:27:26" (3/3) ... [2020-07-21 01:27:26,117 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label21.c [2020-07-21 01:27:26,131 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 01:27:26,140 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 01:27:26,155 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 01:27:26,181 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 01:27:26,182 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 01:27:26,182 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 01:27:26,182 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 01:27:26,182 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 01:27:26,183 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 01:27:26,183 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 01:27:26,183 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 01:27:26,213 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-07-21 01:27:26,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-21 01:27:26,221 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:27:26,223 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2020-07-21 01:27:26,223 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:27:26,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:27:26,230 INFO L82 PathProgramCache]: Analyzing trace with hash -689743650, now seen corresponding path program 1 times [2020-07-21 01:27:26,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:27:26,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426359701] [2020-07-21 01:27:26,241 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 01:27:26,406 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:27:26,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:27:26,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 01:27:26,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:27:26,477 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 01:27:26,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:27:26,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1426359701] [2020-07-21 01:27:26,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:27:26,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:27:26,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584747288] [2020-07-21 01:27:26,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:27:26,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:27:26,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:27:26,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:27:26,506 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2020-07-21 01:27:27,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:27:27,620 INFO L93 Difference]: Finished difference Result 586 states and 1004 transitions. [2020-07-21 01:27:27,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:27:27,626 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-07-21 01:27:27,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:27:27,641 INFO L225 Difference]: With dead ends: 586 [2020-07-21 01:27:27,642 INFO L226 Difference]: Without dead ends: 294 [2020-07-21 01:27:27,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 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 01:27:27,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-07-21 01:27:27,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2020-07-21 01:27:27,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-07-21 01:27:27,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 426 transitions. [2020-07-21 01:27:27,723 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 426 transitions. Word has length 33 [2020-07-21 01:27:27,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:27:27,723 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 426 transitions. [2020-07-21 01:27:27,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:27:27,724 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 426 transitions. [2020-07-21 01:27:27,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-07-21 01:27:27,729 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:27:27,729 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1] [2020-07-21 01:27:27,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:27,932 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:27:27,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:27:27,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1491813086, now seen corresponding path program 1 times [2020-07-21 01:27:27,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:27:27,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900553494] [2020-07-21 01:27:27,934 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 01:27:28,010 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:27:28,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:27:28,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 01:27:28,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:27:28,090 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:27:28,091 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:27:28,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900553494] [2020-07-21 01:27:28,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:27:28,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 01:27:28,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154898973] [2020-07-21 01:27:28,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 01:27:28,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:27:28,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 01:27:28,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 01:27:28,097 INFO L87 Difference]: Start difference. First operand 294 states and 426 transitions. Second operand 5 states. [2020-07-21 01:27:29,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:27:29,269 INFO L93 Difference]: Finished difference Result 890 states and 1316 transitions. [2020-07-21 01:27:29,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 01:27:29,271 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-07-21 01:27:29,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:27:29,280 INFO L225 Difference]: With dead ends: 890 [2020-07-21 01:27:29,280 INFO L226 Difference]: Without dead ends: 602 [2020-07-21 01:27:29,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-21 01:27:29,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-07-21 01:27:29,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 590. [2020-07-21 01:27:29,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-07-21 01:27:29,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 776 transitions. [2020-07-21 01:27:29,329 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 776 transitions. Word has length 107 [2020-07-21 01:27:29,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:27:29,330 INFO L479 AbstractCegarLoop]: Abstraction has 590 states and 776 transitions. [2020-07-21 01:27:29,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 01:27:29,330 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 776 transitions. [2020-07-21 01:27:29,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-07-21 01:27:29,333 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:27:29,334 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:27:29,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:29,548 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:27:29,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:27:29,549 INFO L82 PathProgramCache]: Analyzing trace with hash 313211425, now seen corresponding path program 1 times [2020-07-21 01:27:29,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:27:29,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139490105] [2020-07-21 01:27:29,549 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 01:27:29,636 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:27:29,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:27:29,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:27:29,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:27:29,672 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:27:29,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:27:29,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1139490105] [2020-07-21 01:27:29,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:27:29,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:27:29,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540595887] [2020-07-21 01:27:29,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:27:29,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:27:29,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:27:29,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:27:29,675 INFO L87 Difference]: Start difference. First operand 590 states and 776 transitions. Second operand 3 states. [2020-07-21 01:27:30,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:27:30,340 INFO L93 Difference]: Finished difference Result 1174 states and 1554 transitions. [2020-07-21 01:27:30,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:27:30,342 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 112 [2020-07-21 01:27:30,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:27:30,347 INFO L225 Difference]: With dead ends: 1174 [2020-07-21 01:27:30,347 INFO L226 Difference]: Without dead ends: 590 [2020-07-21 01:27:30,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 110 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 01:27:30,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2020-07-21 01:27:30,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 590. [2020-07-21 01:27:30,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-07-21 01:27:30,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 755 transitions. [2020-07-21 01:27:30,380 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 755 transitions. Word has length 112 [2020-07-21 01:27:30,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:27:30,381 INFO L479 AbstractCegarLoop]: Abstraction has 590 states and 755 transitions. [2020-07-21 01:27:30,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:27:30,381 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 755 transitions. [2020-07-21 01:27:30,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-07-21 01:27:30,385 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:27:30,385 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1] [2020-07-21 01:27:30,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:30,600 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:27:30,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:27:30,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1770374070, now seen corresponding path program 1 times [2020-07-21 01:27:30,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:27:30,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190839703] [2020-07-21 01:27:30,603 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 01:27:30,698 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:27:30,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:27:30,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 01:27:30,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:27:30,762 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:27:30,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:27:30,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190839703] [2020-07-21 01:27:30,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:27:30,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 01:27:30,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119082055] [2020-07-21 01:27:30,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 01:27:30,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:27:30,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 01:27:30,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-21 01:27:30,765 INFO L87 Difference]: Start difference. First operand 590 states and 755 transitions. Second operand 5 states. [2020-07-21 01:27:31,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:27:31,883 INFO L93 Difference]: Finished difference Result 1776 states and 2344 transitions. [2020-07-21 01:27:31,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 01:27:31,885 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-07-21 01:27:31,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:27:31,897 INFO L225 Difference]: With dead ends: 1776 [2020-07-21 01:27:31,897 INFO L226 Difference]: Without dead ends: 1192 [2020-07-21 01:27:31,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 01:27:31,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2020-07-21 01:27:31,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1172. [2020-07-21 01:27:31,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1172 states. [2020-07-21 01:27:31,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1467 transitions. [2020-07-21 01:27:31,947 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1467 transitions. Word has length 133 [2020-07-21 01:27:31,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:27:31,948 INFO L479 AbstractCegarLoop]: Abstraction has 1172 states and 1467 transitions. [2020-07-21 01:27:31,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 01:27:31,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1467 transitions. [2020-07-21 01:27:31,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-07-21 01:27:31,952 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:27:31,952 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:27:32,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:32,168 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:27:32,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:27:32,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1042464845, now seen corresponding path program 1 times [2020-07-21 01:27:32,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:27:32,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383958321] [2020-07-21 01:27:32,171 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 01:27:32,292 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:27:32,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:27:32,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 01:27:32,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:27:32,363 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:27:32,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:27:32,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383958321] [2020-07-21 01:27:32,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:27:32,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 01:27:32,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883474673] [2020-07-21 01:27:32,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 01:27:32,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:27:32,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 01:27:32,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 01:27:32,366 INFO L87 Difference]: Start difference. First operand 1172 states and 1467 transitions. Second operand 5 states. [2020-07-21 01:27:33,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:27:33,397 INFO L93 Difference]: Finished difference Result 2507 states and 3140 transitions. [2020-07-21 01:27:33,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 01:27:33,398 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-07-21 01:27:33,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:27:33,405 INFO L225 Difference]: With dead ends: 2507 [2020-07-21 01:27:33,406 INFO L226 Difference]: Without dead ends: 1341 [2020-07-21 01:27:33,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:27:33,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2020-07-21 01:27:33,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1331. [2020-07-21 01:27:33,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1331 states. [2020-07-21 01:27:33,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 1653 transitions. [2020-07-21 01:27:33,453 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 1653 transitions. Word has length 150 [2020-07-21 01:27:33,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:27:33,454 INFO L479 AbstractCegarLoop]: Abstraction has 1331 states and 1653 transitions. [2020-07-21 01:27:33,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 01:27:33,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 1653 transitions. [2020-07-21 01:27:33,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-07-21 01:27:33,457 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:27:33,458 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1] [2020-07-21 01:27:33,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:33,672 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:27:33,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:27:33,673 INFO L82 PathProgramCache]: Analyzing trace with hash -72773158, now seen corresponding path program 1 times [2020-07-21 01:27:33,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:27:33,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201112731] [2020-07-21 01:27:33,674 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 01:27:33,766 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:27:33,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:27:33,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 01:27:33,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:27:35,946 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:27:35,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:27:36,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201112731] [2020-07-21 01:27:36,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 01:27:36,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-07-21 01:27:36,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132655317] [2020-07-21 01:27:36,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 01:27:36,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:27:36,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 01:27:36,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-21 01:27:36,017 INFO L87 Difference]: Start difference. First operand 1331 states and 1653 transitions. Second operand 6 states. [2020-07-21 01:27:42,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:27:42,871 INFO L93 Difference]: Finished difference Result 3427 states and 4530 transitions. [2020-07-21 01:27:42,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 01:27:42,873 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 167 [2020-07-21 01:27:42,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:27:42,895 INFO L225 Difference]: With dead ends: 3427 [2020-07-21 01:27:42,896 INFO L226 Difference]: Without dead ends: 2245 [2020-07-21 01:27:42,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 188 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-07-21 01:27:42,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2245 states. [2020-07-21 01:27:43,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2245 to 2219. [2020-07-21 01:27:43,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2219 states. [2020-07-21 01:27:43,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2219 states to 2219 states and 2818 transitions. [2020-07-21 01:27:43,014 INFO L78 Accepts]: Start accepts. Automaton has 2219 states and 2818 transitions. Word has length 167 [2020-07-21 01:27:43,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:27:43,015 INFO L479 AbstractCegarLoop]: Abstraction has 2219 states and 2818 transitions. [2020-07-21 01:27:43,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 01:27:43,015 INFO L276 IsEmpty]: Start isEmpty. Operand 2219 states and 2818 transitions. [2020-07-21 01:27:43,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-07-21 01:27:43,018 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:27:43,018 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:27:43,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:43,233 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:27:43,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:27:43,234 INFO L82 PathProgramCache]: Analyzing trace with hash 465383070, now seen corresponding path program 1 times [2020-07-21 01:27:43,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:27:43,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224531546] [2020-07-21 01:27:43,234 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 01:27:43,336 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:27:43,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:27:43,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:27:43,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:27:43,391 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 120 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:27:43,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:27:43,484 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 120 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:27:43,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224531546] [2020-07-21 01:27:43,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:27:43,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 01:27:43,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152853872] [2020-07-21 01:27:43,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 01:27:43,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:27:43,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 01:27:43,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 01:27:43,487 INFO L87 Difference]: Start difference. First operand 2219 states and 2818 transitions. Second operand 6 states. [2020-07-21 01:27:45,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:27:45,071 INFO L93 Difference]: Finished difference Result 4899 states and 6362 transitions. [2020-07-21 01:27:45,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 01:27:45,072 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 177 [2020-07-21 01:27:45,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:27:45,093 INFO L225 Difference]: With dead ends: 4899 [2020-07-21 01:27:45,094 INFO L226 Difference]: Without dead ends: 2829 [2020-07-21 01:27:45,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 348 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-21 01:27:45,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2829 states. [2020-07-21 01:27:45,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2829 to 2815. [2020-07-21 01:27:45,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2815 states. [2020-07-21 01:27:45,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 3491 transitions. [2020-07-21 01:27:45,220 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 3491 transitions. Word has length 177 [2020-07-21 01:27:45,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:27:45,221 INFO L479 AbstractCegarLoop]: Abstraction has 2815 states and 3491 transitions. [2020-07-21 01:27:45,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 01:27:45,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 3491 transitions. [2020-07-21 01:27:45,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-07-21 01:27:45,227 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:27:45,228 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 01:27:45,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:45,442 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:27:45,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:27:45,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1698369206, now seen corresponding path program 1 times [2020-07-21 01:27:45,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:27:45,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1272999445] [2020-07-21 01:27:45,444 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:45,570 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:27:45,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:27:45,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 01:27:45,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:27:45,631 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-07-21 01:27:45,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:27:45,819 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-07-21 01:27:45,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1272999445] [2020-07-21 01:27:45,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-21 01:27:45,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2020-07-21 01:27:45,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625561507] [2020-07-21 01:27:45,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 01:27:45,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:27:45,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 01:27:45,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 01:27:45,823 INFO L87 Difference]: Start difference. First operand 2815 states and 3491 transitions. Second operand 4 states. [2020-07-21 01:27:46,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:27:46,897 INFO L93 Difference]: Finished difference Result 3536 states and 4457 transitions. [2020-07-21 01:27:46,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 01:27:46,898 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 183 [2020-07-21 01:27:46,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:27:46,899 INFO L225 Difference]: With dead ends: 3536 [2020-07-21 01:27:46,899 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 01:27:46,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 01:27:46,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 01:27:46,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 01:27:46,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 01:27:46,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 01:27:46,908 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 183 [2020-07-21 01:27:46,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:27:46,908 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 01:27:46,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 01:27:46,909 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 01:27:46,909 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 01:27:47,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:47,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 01:27:47,750 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 41 [2020-07-21 01:27:47,972 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 01:27:47,972 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a10~0 |old(~a10~0)|) (or (< 7 ~a19~0) (< |old(~a19~0)| 8)) (<= ~a19~0 |old(~a19~0)|) (= ~a1~0 |old(~a1~0)|)) [2020-07-21 01:27:47,973 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 01:27:47,973 INFO L268 CegarLoopResult]: For program point L465(lines 465 572) no Hoare annotation was computed. [2020-07-21 01:27:47,973 INFO L268 CegarLoopResult]: For program point L201-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,973 INFO L268 CegarLoopResult]: For program point L168-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,973 INFO L268 CegarLoopResult]: For program point L135-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,973 INFO L268 CegarLoopResult]: For program point L102-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,974 INFO L268 CegarLoopResult]: For program point L69-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,974 INFO L268 CegarLoopResult]: For program point L36-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,974 INFO L268 CegarLoopResult]: For program point L499(lines 499 572) no Hoare annotation was computed. [2020-07-21 01:27:47,974 INFO L268 CegarLoopResult]: For program point L301(lines 301 572) no Hoare annotation was computed. [2020-07-21 01:27:47,974 INFO L268 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2020-07-21 01:27:47,974 INFO L268 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2020-07-21 01:27:47,975 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-07-21 01:27:47,975 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-07-21 01:27:47,975 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-07-21 01:27:47,975 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-07-21 01:27:47,975 INFO L268 CegarLoopResult]: For program point L335(lines 335 572) no Hoare annotation was computed. [2020-07-21 01:27:47,975 INFO L268 CegarLoopResult]: For program point L236(lines 236 572) no Hoare annotation was computed. [2020-07-21 01:27:47,976 INFO L268 CegarLoopResult]: For program point L534(lines 534 572) no Hoare annotation was computed. [2020-07-21 01:27:47,976 INFO L268 CegarLoopResult]: For program point L171-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,976 INFO L268 CegarLoopResult]: For program point L138-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,976 INFO L268 CegarLoopResult]: For program point L105-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,976 INFO L268 CegarLoopResult]: For program point L72-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,976 INFO L268 CegarLoopResult]: For program point L39-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,976 INFO L268 CegarLoopResult]: For program point L436(lines 436 572) no Hoare annotation was computed. [2020-07-21 01:27:47,977 INFO L268 CegarLoopResult]: For program point L403(lines 403 572) no Hoare annotation was computed. [2020-07-21 01:27:47,977 INFO L268 CegarLoopResult]: For program point L370(lines 370 572) no Hoare annotation was computed. [2020-07-21 01:27:47,977 INFO L268 CegarLoopResult]: For program point L271(lines 271 572) no Hoare annotation was computed. [2020-07-21 01:27:47,977 INFO L268 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2020-07-21 01:27:47,977 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-07-21 01:27:47,977 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-07-21 01:27:47,977 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-07-21 01:27:47,978 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-07-21 01:27:47,978 INFO L268 CegarLoopResult]: For program point L569(lines 569 572) no Hoare annotation was computed. [2020-07-21 01:27:47,978 INFO L268 CegarLoopResult]: For program point L239(lines 239 572) no Hoare annotation was computed. [2020-07-21 01:27:47,978 INFO L268 CegarLoopResult]: For program point L504(lines 504 572) no Hoare annotation was computed. [2020-07-21 01:27:47,978 INFO L268 CegarLoopResult]: For program point L471(lines 471 572) no Hoare annotation was computed. [2020-07-21 01:27:47,978 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 85) no Hoare annotation was computed. [2020-07-21 01:27:47,979 INFO L268 CegarLoopResult]: For program point L306(lines 306 572) no Hoare annotation was computed. [2020-07-21 01:27:47,979 INFO L268 CegarLoopResult]: For program point L174-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,979 INFO L268 CegarLoopResult]: For program point L141-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,979 INFO L268 CegarLoopResult]: For program point L108-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,979 INFO L268 CegarLoopResult]: For program point L75-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,979 INFO L268 CegarLoopResult]: For program point L42-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,979 INFO L268 CegarLoopResult]: For program point L340(lines 340 572) no Hoare annotation was computed. [2020-07-21 01:27:47,979 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-21 01:27:47,980 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-07-21 01:27:47,980 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-07-21 01:27:47,980 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-07-21 01:27:47,980 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-07-21 01:27:47,980 INFO L268 CegarLoopResult]: For program point L540(lines 540 572) no Hoare annotation was computed. [2020-07-21 01:27:47,980 INFO L268 CegarLoopResult]: For program point L408(lines 408 572) no Hoare annotation was computed. [2020-07-21 01:27:47,980 INFO L268 CegarLoopResult]: For program point L375(lines 375 572) no Hoare annotation was computed. [2020-07-21 01:27:47,980 INFO L268 CegarLoopResult]: For program point L210(lines 210 572) no Hoare annotation was computed. [2020-07-21 01:27:47,981 INFO L268 CegarLoopResult]: For program point L177-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,981 INFO L268 CegarLoopResult]: For program point L144-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,981 INFO L268 CegarLoopResult]: For program point L111-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,981 INFO L268 CegarLoopResult]: For program point L78-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,981 INFO L268 CegarLoopResult]: For program point L45-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,981 INFO L268 CegarLoopResult]: For program point L442(lines 442 572) no Hoare annotation was computed. [2020-07-21 01:27:47,981 INFO L268 CegarLoopResult]: For program point L277(lines 277 572) no Hoare annotation was computed. [2020-07-21 01:27:47,981 INFO L268 CegarLoopResult]: For program point L244(lines 244 572) no Hoare annotation was computed. [2020-07-21 01:27:47,982 INFO L268 CegarLoopResult]: For program point L178(line 178) no Hoare annotation was computed. [2020-07-21 01:27:47,982 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-07-21 01:27:47,982 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-07-21 01:27:47,982 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-07-21 01:27:47,982 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-21 01:27:47,982 INFO L268 CegarLoopResult]: For program point L509(lines 509 572) no Hoare annotation was computed. [2020-07-21 01:27:47,982 INFO L268 CegarLoopResult]: For program point L476(lines 476 572) no Hoare annotation was computed. [2020-07-21 01:27:47,982 INFO L268 CegarLoopResult]: For program point L378(lines 378 572) no Hoare annotation was computed. [2020-07-21 01:27:47,983 INFO L268 CegarLoopResult]: For program point L345(lines 345 572) no Hoare annotation was computed. [2020-07-21 01:27:47,983 INFO L268 CegarLoopResult]: For program point L312(lines 312 572) no Hoare annotation was computed. [2020-07-21 01:27:47,983 INFO L268 CegarLoopResult]: For program point L180-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,983 INFO L268 CegarLoopResult]: For program point L147-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,983 INFO L268 CegarLoopResult]: For program point L114-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,983 INFO L268 CegarLoopResult]: For program point L81-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,983 INFO L268 CegarLoopResult]: For program point L48-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,983 INFO L268 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2020-07-21 01:27:47,984 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-07-21 01:27:47,984 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-21 01:27:47,984 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-07-21 01:27:47,984 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-07-21 01:27:47,984 INFO L268 CegarLoopResult]: For program point L545(lines 545 572) no Hoare annotation was computed. [2020-07-21 01:27:47,984 INFO L268 CegarLoopResult]: For program point L215(lines 215 572) no Hoare annotation was computed. [2020-07-21 01:27:47,984 INFO L268 CegarLoopResult]: For program point L414(lines 414 572) no Hoare annotation was computed. [2020-07-21 01:27:47,984 INFO L268 CegarLoopResult]: For program point L249(lines 249 572) no Hoare annotation was computed. [2020-07-21 01:27:47,985 INFO L268 CegarLoopResult]: For program point L183-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,985 INFO L268 CegarLoopResult]: For program point L150-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,985 INFO L268 CegarLoopResult]: For program point L117-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,985 INFO L268 CegarLoopResult]: For program point L84-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,985 INFO L268 CegarLoopResult]: For program point L51-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,985 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,985 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,985 INFO L268 CegarLoopResult]: For program point L514(lines 514 572) no Hoare annotation was computed. [2020-07-21 01:27:47,985 INFO L268 CegarLoopResult]: For program point L481(lines 481 572) no Hoare annotation was computed. [2020-07-21 01:27:47,986 INFO L268 CegarLoopResult]: For program point L448(lines 448 572) no Hoare annotation was computed. [2020-07-21 01:27:47,986 INFO L268 CegarLoopResult]: For program point L283(lines 283 572) no Hoare annotation was computed. [2020-07-21 01:27:47,986 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-07-21 01:27:47,986 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-07-21 01:27:47,986 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-07-21 01:27:47,986 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-07-21 01:27:47,986 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-07-21 01:27:47,986 INFO L268 CegarLoopResult]: For program point L548(lines 548 572) no Hoare annotation was computed. [2020-07-21 01:27:47,987 INFO L268 CegarLoopResult]: For program point L383(lines 383 572) no Hoare annotation was computed. [2020-07-21 01:27:47,987 INFO L268 CegarLoopResult]: For program point L317(lines 317 572) no Hoare annotation was computed. [2020-07-21 01:27:47,987 INFO L268 CegarLoopResult]: For program point L351(lines 351 572) no Hoare annotation was computed. [2020-07-21 01:27:47,987 INFO L268 CegarLoopResult]: For program point L186-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,987 INFO L268 CegarLoopResult]: For program point L153-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,987 INFO L268 CegarLoopResult]: For program point L120-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,987 INFO L268 CegarLoopResult]: For program point L87-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,987 INFO L268 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-07-21 01:27:47,988 INFO L268 CegarLoopResult]: For program point L54-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,988 INFO L268 CegarLoopResult]: For program point L21-2(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,988 INFO L268 CegarLoopResult]: For program point L517(lines 517 572) no Hoare annotation was computed. [2020-07-21 01:27:47,988 INFO L268 CegarLoopResult]: For program point L286(lines 286 572) no Hoare annotation was computed. [2020-07-21 01:27:47,988 INFO L268 CegarLoopResult]: For program point L220(lines 220 572) no Hoare annotation was computed. [2020-07-21 01:27:47,988 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-21 01:27:47,988 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-07-21 01:27:47,988 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-07-21 01:27:47,989 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-07-21 01:27:47,989 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-07-21 01:27:47,989 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-21 01:27:47,989 INFO L268 CegarLoopResult]: For program point L419(lines 419 572) no Hoare annotation was computed. [2020-07-21 01:27:47,989 INFO L268 CegarLoopResult]: For program point L320(lines 320 572) no Hoare annotation was computed. [2020-07-21 01:27:47,989 INFO L268 CegarLoopResult]: For program point L254(lines 254 572) no Hoare annotation was computed. [2020-07-21 01:27:47,989 INFO L268 CegarLoopResult]: For program point L354(lines 354 572) no Hoare annotation was computed. [2020-07-21 01:27:47,989 INFO L268 CegarLoopResult]: For program point L189-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,990 INFO L268 CegarLoopResult]: For program point L156-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,990 INFO L268 CegarLoopResult]: For program point L123-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,990 INFO L268 CegarLoopResult]: For program point L90-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,990 INFO L268 CegarLoopResult]: For program point L57-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,990 INFO L268 CegarLoopResult]: For program point L24-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,990 INFO L268 CegarLoopResult]: For program point L487(lines 487 572) no Hoare annotation was computed. [2020-07-21 01:27:47,990 INFO L268 CegarLoopResult]: For program point L454(lines 454 572) no Hoare annotation was computed. [2020-07-21 01:27:47,990 INFO L268 CegarLoopResult]: For program point L388(lines 388 572) no Hoare annotation was computed. [2020-07-21 01:27:47,990 INFO L268 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2020-07-21 01:27:47,991 INFO L268 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2020-07-21 01:27:47,991 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-07-21 01:27:47,991 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-07-21 01:27:47,991 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-07-21 01:27:47,991 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-21 01:27:47,991 INFO L268 CegarLoopResult]: For program point L554(lines 554 572) no Hoare annotation was computed. [2020-07-21 01:27:47,991 INFO L268 CegarLoopResult]: For program point L323(lines 323 572) no Hoare annotation was computed. [2020-07-21 01:27:47,992 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 20 574) the Hoare annotation is: (let ((.cse0 (not (< 7 |old(~a19~0)|))) (.cse7 (not (<= |old(~a10~0)| 2))) (.cse2 (<= ~a10~0 |old(~a10~0)|)) (.cse3 (<= 1 ~a10~0)) (.cse5 (< 7 ~a19~0)) (.cse4 (<= ~a19~0 |old(~a19~0)|)) (.cse6 (= ~a1~0 |old(~a1~0)|)) (.cse1 (not (<= 1 |old(~a10~0)|)))) (and (or .cse0 .cse1 (and .cse2 .cse3 .cse4 .cse5 .cse6) .cse7) (or .cse0 (not (<= |old(~a10~0)| 0)) (and .cse2 .cse4 .cse5 .cse6)) (or (not (<= |old(~a1~0)| 23)) (and .cse2 .cse4 .cse6) .cse7) (or (and .cse2 .cse3 (or .cse5 (< |old(~a19~0)| 8)) .cse4 .cse6) .cse1 (not (<= |old(~a19~0)| 9))))) [2020-07-21 01:27:47,992 INFO L268 CegarLoopResult]: For program point L357(lines 357 572) no Hoare annotation was computed. [2020-07-21 01:27:47,992 INFO L268 CegarLoopResult]: For program point L291(lines 291 572) no Hoare annotation was computed. [2020-07-21 01:27:47,992 INFO L268 CegarLoopResult]: For program point L225(lines 225 572) no Hoare annotation was computed. [2020-07-21 01:27:47,992 INFO L268 CegarLoopResult]: For program point L192-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,992 INFO L268 CegarLoopResult]: For program point L159-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,992 INFO L268 CegarLoopResult]: For program point L126-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,993 INFO L268 CegarLoopResult]: For program point L93-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,993 INFO L268 CegarLoopResult]: For program point L60-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,993 INFO L268 CegarLoopResult]: For program point L27-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,993 INFO L268 CegarLoopResult]: For program point L523(lines 523 572) no Hoare annotation was computed. [2020-07-21 01:27:47,993 INFO L268 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2020-07-21 01:27:47,993 INFO L268 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-07-21 01:27:47,993 INFO L268 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-07-21 01:27:47,994 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-07-21 01:27:47,994 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-07-21 01:27:47,994 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-07-21 01:27:47,994 INFO L268 CegarLoopResult]: For program point L557(lines 557 572) no Hoare annotation was computed. [2020-07-21 01:27:47,994 INFO L268 CegarLoopResult]: For program point L425(lines 425 572) no Hoare annotation was computed. [2020-07-21 01:27:47,994 INFO L268 CegarLoopResult]: For program point L326(lines 326 572) no Hoare annotation was computed. [2020-07-21 01:27:47,994 INFO L268 CegarLoopResult]: For program point L260(lines 260 572) no Hoare annotation was computed. [2020-07-21 01:27:47,994 INFO L268 CegarLoopResult]: For program point L393(lines 393 572) no Hoare annotation was computed. [2020-07-21 01:27:47,994 INFO L268 CegarLoopResult]: For program point L360(lines 360 572) no Hoare annotation was computed. [2020-07-21 01:27:47,994 INFO L268 CegarLoopResult]: For program point L195-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,995 INFO L268 CegarLoopResult]: For program point L162-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,995 INFO L268 CegarLoopResult]: For program point L129-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,995 INFO L268 CegarLoopResult]: For program point L96-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,995 INFO L268 CegarLoopResult]: For program point L63-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,995 INFO L268 CegarLoopResult]: For program point L30-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,995 INFO L268 CegarLoopResult]: For program point L526(lines 526 572) no Hoare annotation was computed. [2020-07-21 01:27:47,995 INFO L268 CegarLoopResult]: For program point L493(lines 493 572) no Hoare annotation was computed. [2020-07-21 01:27:47,995 INFO L268 CegarLoopResult]: For program point L460(lines 460 572) no Hoare annotation was computed. [2020-07-21 01:27:47,995 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-07-21 01:27:47,996 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-07-21 01:27:47,996 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-07-21 01:27:47,996 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-07-21 01:27:47,996 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-07-21 01:27:47,996 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-21 01:27:47,996 INFO L268 CegarLoopResult]: For program point L329(lines 329 572) no Hoare annotation was computed. [2020-07-21 01:27:47,996 INFO L268 CegarLoopResult]: For program point L296(lines 296 572) no Hoare annotation was computed. [2020-07-21 01:27:47,996 INFO L268 CegarLoopResult]: For program point L231(lines 231 572) no Hoare annotation was computed. [2020-07-21 01:27:47,996 INFO L268 CegarLoopResult]: For program point L198-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,997 INFO L268 CegarLoopResult]: For program point L165-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,997 INFO L268 CegarLoopResult]: For program point L132-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,997 INFO L268 CegarLoopResult]: For program point L99-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,997 INFO L268 CegarLoopResult]: For program point L66-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,997 INFO L268 CegarLoopResult]: For program point L33-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:27:47,997 INFO L268 CegarLoopResult]: For program point L529(lines 529 572) no Hoare annotation was computed. [2020-07-21 01:27:47,997 INFO L268 CegarLoopResult]: For program point L430(lines 430 572) no Hoare annotation was computed. [2020-07-21 01:27:47,997 INFO L268 CegarLoopResult]: For program point L265(lines 265 572) no Hoare annotation was computed. [2020-07-21 01:27:47,997 INFO L268 CegarLoopResult]: For program point L199(line 199) no Hoare annotation was computed. [2020-07-21 01:27:47,997 INFO L268 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2020-07-21 01:27:47,998 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-07-21 01:27:47,998 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-07-21 01:27:47,998 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-07-21 01:27:47,998 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-21 01:27:47,998 INFO L268 CegarLoopResult]: For program point L563(lines 563 572) no Hoare annotation was computed. [2020-07-21 01:27:47,998 INFO L268 CegarLoopResult]: For program point L398(lines 398 572) no Hoare annotation was computed. [2020-07-21 01:27:47,998 INFO L268 CegarLoopResult]: For program point L365(lines 365 572) no Hoare annotation was computed. [2020-07-21 01:27:47,998 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 01:27:47,999 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a10~0 0) (<= ~a19~0 9) (< 7 ~a19~0) (= 23 ~a1~0)) [2020-07-21 01:27:47,999 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 01:27:47,999 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 01:27:47,999 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 576 592) the Hoare annotation is: (or (not (< 7 |old(~a19~0)|)) (not (= 23 |old(~a1~0)|)) (not (<= |old(~a10~0)| 0)) (not (<= |old(~a19~0)| 9)) (and (<= ~a10~0 |old(~a10~0)|) (<= ~a19~0 |old(~a19~0)|) (< 7 ~a19~0) (= ~a1~0 |old(~a1~0)|))) [2020-07-21 01:27:47,999 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 576 592) no Hoare annotation was computed. [2020-07-21 01:27:47,999 INFO L264 CegarLoopResult]: At program point L590(line 590) the Hoare annotation is: (or (not (<= |old(~a10~0)| 0)) (not (< 7 |old(~a19~0)|)) (not (= 23 |old(~a1~0)|)) (and (<= ~a10~0 2) (< 7 ~a19~0)) (not (<= |old(~a19~0)| 9)) (and (<= ~a19~0 9) (<= 1 ~a10~0)) (and (<= ~a1~0 23) (<= ~a19~0 |old(~a19~0)|))) [2020-07-21 01:27:47,999 INFO L268 CegarLoopResult]: For program point L590-1(line 590) no Hoare annotation was computed. [2020-07-21 01:27:47,999 INFO L268 CegarLoopResult]: For program point L587(line 587) no Hoare annotation was computed. [2020-07-21 01:27:48,000 INFO L264 CegarLoopResult]: At program point L582-2(lines 582 591) the Hoare annotation is: (or (not (<= |old(~a10~0)| 0)) (not (< 7 |old(~a19~0)|)) (not (= 23 |old(~a1~0)|)) (and (<= ~a10~0 2) (< 7 ~a19~0)) (not (<= |old(~a19~0)| 9)) (and (<= ~a19~0 9) (<= 1 ~a10~0)) (and (<= ~a1~0 23) (<= ~a19~0 |old(~a19~0)|))) [2020-07-21 01:27:48,000 INFO L268 CegarLoopResult]: For program point L582-3(lines 576 592) no Hoare annotation was computed. [2020-07-21 01:27:48,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:27:48 BoogieIcfgContainer [2020-07-21 01:27:48,020 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 01:27:48,022 INFO L168 Benchmark]: Toolchain (without parser) took 24313.28 ms. Allocated memory was 137.9 MB in the beginning and 418.9 MB in the end (delta: 281.0 MB). Free memory was 100.9 MB in the beginning and 188.2 MB in the end (delta: -87.3 MB). Peak memory consumption was 193.7 MB. Max. memory is 7.1 GB. [2020-07-21 01:27:48,023 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-21 01:27:48,024 INFO L168 Benchmark]: CACSL2BoogieTranslator took 873.94 ms. Allocated memory was 137.9 MB in the beginning and 203.9 MB in the end (delta: 66.1 MB). Free memory was 100.5 MB in the beginning and 170.0 MB in the end (delta: -69.6 MB). Peak memory consumption was 34.4 MB. Max. memory is 7.1 GB. [2020-07-21 01:27:48,025 INFO L168 Benchmark]: Boogie Preprocessor took 178.72 ms. Allocated memory is still 203.9 MB. Free memory was 170.0 MB in the beginning and 165.6 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-07-21 01:27:48,026 INFO L168 Benchmark]: RCFGBuilder took 1342.16 ms. Allocated memory was 203.9 MB in the beginning and 235.4 MB in the end (delta: 31.5 MB). Free memory was 165.6 MB in the beginning and 180.5 MB in the end (delta: -14.9 MB). Peak memory consumption was 84.8 MB. Max. memory is 7.1 GB. [2020-07-21 01:27:48,027 INFO L168 Benchmark]: TraceAbstraction took 21911.24 ms. Allocated memory was 235.4 MB in the beginning and 418.9 MB in the end (delta: 183.5 MB). Free memory was 180.5 MB in the beginning and 188.2 MB in the end (delta: -7.7 MB). Peak memory consumption was 175.8 MB. Max. memory is 7.1 GB. [2020-07-21 01:27:48,031 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 873.94 ms. Allocated memory was 137.9 MB in the beginning and 203.9 MB in the end (delta: 66.1 MB). Free memory was 100.5 MB in the beginning and 170.0 MB in the end (delta: -69.6 MB). Peak memory consumption was 34.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 178.72 ms. Allocated memory is still 203.9 MB. Free memory was 170.0 MB in the beginning and 165.6 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1342.16 ms. Allocated memory was 203.9 MB in the beginning and 235.4 MB in the end (delta: 31.5 MB). Free memory was 165.6 MB in the beginning and 180.5 MB in the end (delta: -14.9 MB). Peak memory consumption was 84.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 21911.24 ms. Allocated memory was 235.4 MB in the beginning and 418.9 MB in the end (delta: 183.5 MB). Free memory was 180.5 MB in the beginning and 188.2 MB in the end (delta: -7.7 MB). Peak memory consumption was 175.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 85]: 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: 582]: Loop Invariant Derived loop invariant: (((((!(\old(a10) <= 0) || !(7 < \old(a19))) || !(23 == \old(a1))) || (a10 <= 2 && 7 < a19)) || !(\old(a19) <= 9)) || (a19 <= 9 && 1 <= a10)) || (a1 <= 23 && a19 <= \old(a19)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 20.9s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 14.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 360 SDtfs, 2275 SDslu, 225 SDs, 0 SdLazy, 5146 SolverSat, 873 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 11.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1457 GetRequests, 1416 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2815occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 82 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 71 PreInvPairs, 119 NumberOfFragments, 237 HoareAnnotationTreeSize, 71 FomulaSimplifications, 2090 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 7 FomulaSimplificationsInter, 1297 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 1062 NumberOfCodeBlocks, 1036 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 1412 ConstructedInterpolants, 0 QuantifiedInterpolants, 719936 SizeOfPredicates, 15 NumberOfNonLiveVariables, 2142 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 545/618 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...