/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 NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 13:53:11,623 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-21 13:53:11,651 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 13:53:11,652 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 13:53:11,654 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 13:53:11,658 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 13:53:11,659 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 13:53:11,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 13:53:11,666 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 13:53:11,671 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 13:53:11,675 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 13:53:11,676 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 13:53:11,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 13:53:11,680 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 13:53:11,685 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 13:53:11,699 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 13:53:11,700 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 13:53:11,702 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 13:53:11,703 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 13:53:11,726 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 13:53:11,726 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 13:53:11,728 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 13:53:11,729 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 13:53:11,729 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 13:53:11,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 13:53:11,729 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 13:53:11,729 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 13:53:11,730 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 13:53:11,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 13:53:11,731 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 13:53:11,731 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 13:53:11,731 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 13:53:11,732 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 13:53:11,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 13:53:11,732 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 13:53:11,732 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 13:53:11,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 13:53:11,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 13:53:11,733 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 13:53:11,733 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 13:53:11,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 13:53:11,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 13:53:11,734 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 13:53:11,734 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 13:53:11,734 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 13:53:11,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:53:11,735 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 13:53:11,735 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 13:53:11,735 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 -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 13:53:12,057 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 13:53:12,070 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 13:53:12,073 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 13:53:12,075 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 13:53:12,075 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 13:53:12,076 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label07.c [2020-07-21 13:53:12,157 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49452c95e/d068df2bd193452fbcb75e1f1591b3ba/FLAGe70c86575 [2020-07-21 13:53:12,783 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 13:53:12,783 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label07.c [2020-07-21 13:53:12,806 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49452c95e/d068df2bd193452fbcb75e1f1591b3ba/FLAGe70c86575 [2020-07-21 13:53:13,044 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49452c95e/d068df2bd193452fbcb75e1f1591b3ba [2020-07-21 13:53:13,058 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 13:53:13,061 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 13:53:13,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 13:53:13,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 13:53:13,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 13:53:13,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:53:13" (1/1) ... [2020-07-21 13:53:13,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@183121ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:53:13, skipping insertion in model container [2020-07-21 13:53:13,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:53:13" (1/1) ... [2020-07-21 13:53:13,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 13:53:13,125 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 13:53:13,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 13:53:13,524 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 13:53:13,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 13:53:13,757 INFO L208 MainTranslator]: Completed translation [2020-07-21 13:53:13,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:53:13 WrapperNode [2020-07-21 13:53:13,758 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 13:53:13,759 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 13:53:13,759 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 13:53:13,759 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 13:53:13,774 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:53:13" (1/1) ... [2020-07-21 13:53:13,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:53:13" (1/1) ... [2020-07-21 13:53:13,796 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:53:13" (1/1) ... [2020-07-21 13:53:13,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:53:13" (1/1) ... [2020-07-21 13:53:13,837 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:53:13" (1/1) ... [2020-07-21 13:53:13,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:53:13" (1/1) ... [2020-07-21 13:53:13,862 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:53:13" (1/1) ... [2020-07-21 13:53:13,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 13:53:13,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 13:53:13,872 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 13:53:13,874 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 13:53:13,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:53:13" (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 13:53:13,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 13:53:13,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 13:53:13,959 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 13:53:13,960 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 13:53:13,960 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 13:53:13,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 13:53:13,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 13:53:13,961 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 13:53:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 13:53:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 13:53:13,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 13:53:15,352 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 13:53:15,353 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 13:53:15,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:53:15 BoogieIcfgContainer [2020-07-21 13:53:15,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 13:53:15,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 13:53:15,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 13:53:15,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 13:53:15,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:53:13" (1/3) ... [2020-07-21 13:53:15,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f2fddb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:53:15, skipping insertion in model container [2020-07-21 13:53:15,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:53:13" (2/3) ... [2020-07-21 13:53:15,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f2fddb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:53:15, skipping insertion in model container [2020-07-21 13:53:15,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:53:15" (3/3) ... [2020-07-21 13:53:15,371 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label07.c [2020-07-21 13:53:15,384 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 13:53:15,394 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 13:53:15,411 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 13:53:15,444 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 13:53:15,444 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 13:53:15,444 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 13:53:15,445 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 13:53:15,445 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 13:53:15,445 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 13:53:15,445 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 13:53:15,446 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 13:53:15,478 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-07-21 13:53:15,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-21 13:53:15,488 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:53:15,489 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:53:15,490 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:53:15,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:53:15,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1452048058, now seen corresponding path program 1 times [2020-07-21 13:53:15,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:53:15,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147551491] [2020-07-21 13:53:15,510 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:53:15,635 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:53:15,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:53:15,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 13:53:15,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:53:15,726 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 13:53:15,727 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:53:15,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1147551491] [2020-07-21 13:53:15,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:53:15,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:53:15,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044668469] [2020-07-21 13:53:15,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:53:15,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:53:15,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:53:15,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:53:15,760 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2020-07-21 13:53:16,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:53:16,962 INFO L93 Difference]: Finished difference Result 586 states and 1004 transitions. [2020-07-21 13:53:16,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:53:16,967 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-07-21 13:53:16,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:53:16,999 INFO L225 Difference]: With dead ends: 586 [2020-07-21 13:53:17,000 INFO L226 Difference]: Without dead ends: 294 [2020-07-21 13:53:17,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:53:17,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-07-21 13:53:17,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2020-07-21 13:53:17,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-07-21 13:53:17,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 446 transitions. [2020-07-21 13:53:17,128 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 446 transitions. Word has length 51 [2020-07-21 13:53:17,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:53:17,129 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 446 transitions. [2020-07-21 13:53:17,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:53:17,130 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 446 transitions. [2020-07-21 13:53:17,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-07-21 13:53:17,136 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:53:17,136 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, 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] [2020-07-21 13:53:17,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:53:17,352 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:53:17,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:53:17,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1838295646, now seen corresponding path program 1 times [2020-07-21 13:53:17,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:53:17,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906483654] [2020-07-21 13:53:17,353 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:53:17,441 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:53:17,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:53:17,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 13:53:17,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:53:17,490 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:53:17,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:53:17,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906483654] [2020-07-21 13:53:17,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:53:17,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:53:17,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314447919] [2020-07-21 13:53:17,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:53:17,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:53:17,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:53:17,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:53:17,494 INFO L87 Difference]: Start difference. First operand 294 states and 446 transitions. Second operand 3 states. [2020-07-21 13:53:18,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:53:18,139 INFO L93 Difference]: Finished difference Result 582 states and 894 transitions. [2020-07-21 13:53:18,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:53:18,140 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 121 [2020-07-21 13:53:18,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:53:18,146 INFO L225 Difference]: With dead ends: 582 [2020-07-21 13:53:18,146 INFO L226 Difference]: Without dead ends: 580 [2020-07-21 13:53:18,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 119 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 13:53:18,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-07-21 13:53:18,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 294. [2020-07-21 13:53:18,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-07-21 13:53:18,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 446 transitions. [2020-07-21 13:53:18,173 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 446 transitions. Word has length 121 [2020-07-21 13:53:18,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:53:18,174 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 446 transitions. [2020-07-21 13:53:18,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:53:18,174 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 446 transitions. [2020-07-21 13:53:18,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-07-21 13:53:18,176 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:53:18,176 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, 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] [2020-07-21 13:53:18,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:53:18,392 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:53:18,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:53:18,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1710375939, now seen corresponding path program 1 times [2020-07-21 13:53:18,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:53:18,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116615126] [2020-07-21 13:53:18,396 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:53:18,501 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:53:18,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:53:18,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 13:53:18,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:53:18,548 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:53:18,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:53:18,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116615126] [2020-07-21 13:53:18,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:53:18,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 13:53:18,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868811529] [2020-07-21 13:53:18,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 13:53:18,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:53:18,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 13:53:18,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 13:53:18,551 INFO L87 Difference]: Start difference. First operand 294 states and 446 transitions. Second operand 5 states. [2020-07-21 13:53:19,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:53:19,578 INFO L93 Difference]: Finished difference Result 741 states and 1138 transitions. [2020-07-21 13:53:19,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 13:53:19,579 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-07-21 13:53:19,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:53:19,586 INFO L225 Difference]: With dead ends: 741 [2020-07-21 13:53:19,587 INFO L226 Difference]: Without dead ends: 453 [2020-07-21 13:53:19,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 120 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 13:53:19,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2020-07-21 13:53:19,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 443. [2020-07-21 13:53:19,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-07-21 13:53:19,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 624 transitions. [2020-07-21 13:53:19,636 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 624 transitions. Word has length 124 [2020-07-21 13:53:19,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:53:19,637 INFO L479 AbstractCegarLoop]: Abstraction has 443 states and 624 transitions. [2020-07-21 13:53:19,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 13:53:19,637 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 624 transitions. [2020-07-21 13:53:19,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-07-21 13:53:19,640 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:53:19,640 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, 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] [2020-07-21 13:53:19,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:53:19,857 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:53:19,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:53:19,858 INFO L82 PathProgramCache]: Analyzing trace with hash 869168890, now seen corresponding path program 1 times [2020-07-21 13:53:19,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:53:19,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278197892] [2020-07-21 13:53:19,859 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:53:20,012 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:53:20,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:53:20,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 13:53:20,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:53:20,103 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:53:20,104 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:53:20,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278197892] [2020-07-21 13:53:20,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:53:20,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 13:53:20,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415440604] [2020-07-21 13:53:20,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 13:53:20,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:53:20,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 13:53:20,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 13:53:20,107 INFO L87 Difference]: Start difference. First operand 443 states and 624 transitions. Second operand 5 states. [2020-07-21 13:53:21,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:53:21,157 INFO L93 Difference]: Finished difference Result 1355 states and 1987 transitions. [2020-07-21 13:53:21,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 13:53:21,158 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-07-21 13:53:21,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:53:21,169 INFO L225 Difference]: With dead ends: 1355 [2020-07-21 13:53:21,170 INFO L226 Difference]: Without dead ends: 918 [2020-07-21 13:53:21,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-21 13:53:21,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2020-07-21 13:53:21,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 898. [2020-07-21 13:53:21,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 898 states. [2020-07-21 13:53:21,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 1245 transitions. [2020-07-21 13:53:21,234 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 1245 transitions. Word has length 133 [2020-07-21 13:53:21,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:53:21,236 INFO L479 AbstractCegarLoop]: Abstraction has 898 states and 1245 transitions. [2020-07-21 13:53:21,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 13:53:21,236 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 1245 transitions. [2020-07-21 13:53:21,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-07-21 13:53:21,252 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:53:21,252 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, 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] [2020-07-21 13:53:21,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:53:21,456 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:53:21,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:53:21,456 INFO L82 PathProgramCache]: Analyzing trace with hash -424020551, now seen corresponding path program 1 times [2020-07-21 13:53:21,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:53:21,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530572361] [2020-07-21 13:53:21,458 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:53:21,550 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:53:21,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:53:21,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 13:53:21,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:53:21,618 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:53:21,619 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:53:21,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530572361] [2020-07-21 13:53:21,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:53:21,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:53:21,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130781805] [2020-07-21 13:53:21,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:53:21,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:53:21,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:53:21,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:53:21,622 INFO L87 Difference]: Start difference. First operand 898 states and 1245 transitions. Second operand 3 states. [2020-07-21 13:53:22,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:53:22,320 INFO L93 Difference]: Finished difference Result 2374 states and 3313 transitions. [2020-07-21 13:53:22,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:53:22,324 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 170 [2020-07-21 13:53:22,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:53:22,340 INFO L225 Difference]: With dead ends: 2374 [2020-07-21 13:53:22,340 INFO L226 Difference]: Without dead ends: 1482 [2020-07-21 13:53:22,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 168 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 13:53:22,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2020-07-21 13:53:22,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1337. [2020-07-21 13:53:22,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1337 states. [2020-07-21 13:53:22,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 1774 transitions. [2020-07-21 13:53:22,404 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 1774 transitions. Word has length 170 [2020-07-21 13:53:22,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:53:22,405 INFO L479 AbstractCegarLoop]: Abstraction has 1337 states and 1774 transitions. [2020-07-21 13:53:22,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:53:22,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 1774 transitions. [2020-07-21 13:53:22,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-07-21 13:53:22,413 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:53:22,414 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, 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] [2020-07-21 13:53:22,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:53:22,628 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:53:22,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:53:22,628 INFO L82 PathProgramCache]: Analyzing trace with hash 847819014, now seen corresponding path program 1 times [2020-07-21 13:53:22,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:53:22,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389664835] [2020-07-21 13:53:22,629 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:53:22,729 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:53:22,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:53:22,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 13:53:22,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:53:22,830 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:53:22,831 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:53:22,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389664835] [2020-07-21 13:53:22,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:53:22,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 13:53:22,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426327280] [2020-07-21 13:53:22,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 13:53:22,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:53:22,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 13:53:22,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 13:53:22,834 INFO L87 Difference]: Start difference. First operand 1337 states and 1774 transitions. Second operand 5 states. [2020-07-21 13:53:23,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:53:23,885 INFO L93 Difference]: Finished difference Result 3423 states and 4716 transitions. [2020-07-21 13:53:23,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 13:53:23,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 187 [2020-07-21 13:53:23,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:53:23,908 INFO L225 Difference]: With dead ends: 3423 [2020-07-21 13:53:23,908 INFO L226 Difference]: Without dead ends: 2092 [2020-07-21 13:53:23,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 183 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 13:53:23,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2092 states. [2020-07-21 13:53:23,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2092 to 1653. [2020-07-21 13:53:23,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1653 states. [2020-07-21 13:53:23,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1653 states to 1653 states and 2191 transitions. [2020-07-21 13:53:23,970 INFO L78 Accepts]: Start accepts. Automaton has 1653 states and 2191 transitions. Word has length 187 [2020-07-21 13:53:23,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:53:23,971 INFO L479 AbstractCegarLoop]: Abstraction has 1653 states and 2191 transitions. [2020-07-21 13:53:23,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 13:53:23,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1653 states and 2191 transitions. [2020-07-21 13:53:23,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-07-21 13:53:23,976 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:53:23,976 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:53:24,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:53:24,191 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:53:24,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:53:24,192 INFO L82 PathProgramCache]: Analyzing trace with hash 238686173, now seen corresponding path program 1 times [2020-07-21 13:53:24,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:53:24,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280833160] [2020-07-21 13:53:24,194 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:53:24,314 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:53:24,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:53:24,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 13:53:24,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:53:24,403 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:53:24,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 13:53:24,560 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:53:24,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280833160] [2020-07-21 13:53:24,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 13:53:24,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 13:53:24,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207114957] [2020-07-21 13:53:24,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 13:53:24,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:53:24,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 13:53:24,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 13:53:24,564 INFO L87 Difference]: Start difference. First operand 1653 states and 2191 transitions. Second operand 7 states. [2020-07-21 13:53:25,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:53:25,933 INFO L93 Difference]: Finished difference Result 4031 states and 5404 transitions. [2020-07-21 13:53:25,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 13:53:25,934 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 212 [2020-07-21 13:53:25,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:53:25,949 INFO L225 Difference]: With dead ends: 4031 [2020-07-21 13:53:25,949 INFO L226 Difference]: Without dead ends: 2384 [2020-07-21 13:53:25,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 419 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-07-21 13:53:25,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2384 states. [2020-07-21 13:53:26,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2384 to 2233. [2020-07-21 13:53:26,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2233 states. [2020-07-21 13:53:26,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2233 states to 2233 states and 2782 transitions. [2020-07-21 13:53:26,036 INFO L78 Accepts]: Start accepts. Automaton has 2233 states and 2782 transitions. Word has length 212 [2020-07-21 13:53:26,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:53:26,037 INFO L479 AbstractCegarLoop]: Abstraction has 2233 states and 2782 transitions. [2020-07-21 13:53:26,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 13:53:26,037 INFO L276 IsEmpty]: Start isEmpty. Operand 2233 states and 2782 transitions. [2020-07-21 13:53:26,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-07-21 13:53:26,046 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:53:26,047 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:53:26,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:53:26,261 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:53:26,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:53:26,262 INFO L82 PathProgramCache]: Analyzing trace with hash -73062046, now seen corresponding path program 1 times [2020-07-21 13:53:26,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:53:26,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38278657] [2020-07-21 13:53:26,263 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 13:53:26,404 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:53:26,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:53:26,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 13:53:26,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:53:26,528 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 156 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:53:26,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 13:53:26,784 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 156 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:53:26,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38278657] [2020-07-21 13:53:26,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 13:53:26,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 13:53:26,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429731807] [2020-07-21 13:53:26,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 13:53:26,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:53:26,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 13:53:26,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 13:53:26,789 INFO L87 Difference]: Start difference. First operand 2233 states and 2782 transitions. Second operand 6 states. [2020-07-21 13:53:27,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:53:27,842 INFO L93 Difference]: Finished difference Result 4496 states and 5713 transitions. [2020-07-21 13:53:27,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 13:53:27,843 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 257 [2020-07-21 13:53:27,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:53:27,856 INFO L225 Difference]: With dead ends: 4496 [2020-07-21 13:53:27,856 INFO L226 Difference]: Without dead ends: 2269 [2020-07-21 13:53:27,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 510 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-21 13:53:27,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2269 states. [2020-07-21 13:53:27,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2269 to 2235. [2020-07-21 13:53:27,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2235 states. [2020-07-21 13:53:27,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2235 states to 2235 states and 2669 transitions. [2020-07-21 13:53:27,968 INFO L78 Accepts]: Start accepts. Automaton has 2235 states and 2669 transitions. Word has length 257 [2020-07-21 13:53:27,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:53:27,969 INFO L479 AbstractCegarLoop]: Abstraction has 2235 states and 2669 transitions. [2020-07-21 13:53:27,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 13:53:27,969 INFO L276 IsEmpty]: Start isEmpty. Operand 2235 states and 2669 transitions. [2020-07-21 13:53:27,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-07-21 13:53:27,977 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:53:27,978 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:53:28,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:53:28,192 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:53:28,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:53:28,193 INFO L82 PathProgramCache]: Analyzing trace with hash -417734231, now seen corresponding path program 1 times [2020-07-21 13:53:28,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:53:28,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258730331] [2020-07-21 13:53:28,195 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:53:28,312 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:53:28,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:53:28,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 13:53:28,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:53:28,403 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:53:28,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 13:53:28,599 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:53:28,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258730331] [2020-07-21 13:53:28,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 13:53:28,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 13:53:28,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218096966] [2020-07-21 13:53:28,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 13:53:28,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:53:28,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 13:53:28,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 13:53:28,603 INFO L87 Difference]: Start difference. First operand 2235 states and 2669 transitions. Second operand 6 states. [2020-07-21 13:53:29,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:53:29,796 INFO L93 Difference]: Finished difference Result 5384 states and 6552 transitions. [2020-07-21 13:53:29,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 13:53:29,796 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 266 [2020-07-21 13:53:29,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:53:29,810 INFO L225 Difference]: With dead ends: 5384 [2020-07-21 13:53:29,810 INFO L226 Difference]: Without dead ends: 2271 [2020-07-21 13:53:29,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 528 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 13:53:29,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2271 states. [2020-07-21 13:53:29,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2271 to 2082. [2020-07-21 13:53:29,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2082 states. [2020-07-21 13:53:29,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2082 states to 2082 states and 2413 transitions. [2020-07-21 13:53:29,876 INFO L78 Accepts]: Start accepts. Automaton has 2082 states and 2413 transitions. Word has length 266 [2020-07-21 13:53:29,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:53:29,877 INFO L479 AbstractCegarLoop]: Abstraction has 2082 states and 2413 transitions. [2020-07-21 13:53:29,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 13:53:29,877 INFO L276 IsEmpty]: Start isEmpty. Operand 2082 states and 2413 transitions. [2020-07-21 13:53:29,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-07-21 13:53:29,884 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:53:29,886 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:53:30,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:53:30,099 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:53:30,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:53:30,099 INFO L82 PathProgramCache]: Analyzing trace with hash 492877617, now seen corresponding path program 1 times [2020-07-21 13:53:30,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:53:30,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975921824] [2020-07-21 13:53:30,100 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:53:30,245 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:53:30,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:53:30,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 13:53:30,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:53:30,343 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-07-21 13:53:30,344 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:53:30,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1975921824] [2020-07-21 13:53:30,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:53:30,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:53:30,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757684091] [2020-07-21 13:53:30,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:53:30,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:53:30,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:53:30,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:53:30,346 INFO L87 Difference]: Start difference. First operand 2082 states and 2413 transitions. Second operand 3 states. [2020-07-21 13:53:30,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:53:30,898 INFO L93 Difference]: Finished difference Result 2227 states and 2558 transitions. [2020-07-21 13:53:30,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:53:30,900 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 302 [2020-07-21 13:53:30,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:53:30,909 INFO L225 Difference]: With dead ends: 2227 [2020-07-21 13:53:30,910 INFO L226 Difference]: Without dead ends: 2076 [2020-07-21 13:53:30,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 300 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 13:53:30,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2076 states. [2020-07-21 13:53:30,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2076 to 1931. [2020-07-21 13:53:30,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1931 states. [2020-07-21 13:53:30,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1931 states to 1931 states and 2221 transitions. [2020-07-21 13:53:30,955 INFO L78 Accepts]: Start accepts. Automaton has 1931 states and 2221 transitions. Word has length 302 [2020-07-21 13:53:30,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:53:30,956 INFO L479 AbstractCegarLoop]: Abstraction has 1931 states and 2221 transitions. [2020-07-21 13:53:30,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:53:30,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1931 states and 2221 transitions. [2020-07-21 13:53:30,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2020-07-21 13:53:30,965 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:53:30,965 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:53:31,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:53:31,180 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:53:31,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:53:31,180 INFO L82 PathProgramCache]: Analyzing trace with hash 775353937, now seen corresponding path program 1 times [2020-07-21 13:53:31,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:53:31,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11405230] [2020-07-21 13:53:31,181 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:53:31,337 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:53:31,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:53:31,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 13:53:31,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:53:31,523 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 320 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-07-21 13:53:31,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 13:53:31,680 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 320 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-07-21 13:53:31,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11405230] [2020-07-21 13:53:31,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 13:53:31,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 13:53:31,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116737826] [2020-07-21 13:53:31,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 13:53:31,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:53:31,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 13:53:31,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 13:53:31,682 INFO L87 Difference]: Start difference. First operand 1931 states and 2221 transitions. Second operand 6 states. [2020-07-21 13:53:32,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:53:32,915 INFO L93 Difference]: Finished difference Result 4665 states and 5652 transitions. [2020-07-21 13:53:32,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 13:53:32,916 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 358 [2020-07-21 13:53:32,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:53:32,932 INFO L225 Difference]: With dead ends: 4665 [2020-07-21 13:53:32,932 INFO L226 Difference]: Without dead ends: 2740 [2020-07-21 13:53:32,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 721 GetRequests, 713 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-21 13:53:32,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2740 states. [2020-07-21 13:53:33,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2740 to 2515. [2020-07-21 13:53:33,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2515 states. [2020-07-21 13:53:33,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2515 states to 2515 states and 2881 transitions. [2020-07-21 13:53:33,046 INFO L78 Accepts]: Start accepts. Automaton has 2515 states and 2881 transitions. Word has length 358 [2020-07-21 13:53:33,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:53:33,047 INFO L479 AbstractCegarLoop]: Abstraction has 2515 states and 2881 transitions. [2020-07-21 13:53:33,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 13:53:33,048 INFO L276 IsEmpty]: Start isEmpty. Operand 2515 states and 2881 transitions. [2020-07-21 13:53:33,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2020-07-21 13:53:33,059 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:53:33,059 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:53:33,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:53:33,273 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:53:33,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:53:33,273 INFO L82 PathProgramCache]: Analyzing trace with hash 549515818, now seen corresponding path program 1 times [2020-07-21 13:53:33,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:53:33,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903401467] [2020-07-21 13:53:33,274 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:53:33,460 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:53:33,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:53:33,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 13:53:33,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:53:33,571 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2020-07-21 13:53:33,572 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:53:33,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [903401467] [2020-07-21 13:53:33,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:53:33,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:53:33,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198048098] [2020-07-21 13:53:33,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:53:33,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:53:33,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:53:33,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:53:33,575 INFO L87 Difference]: Start difference. First operand 2515 states and 2881 transitions. Second operand 3 states. [2020-07-21 13:53:33,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:53:33,919 INFO L93 Difference]: Finished difference Result 2515 states and 2881 transitions. [2020-07-21 13:53:33,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:53:33,919 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 371 [2020-07-21 13:53:33,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:53:33,921 INFO L225 Difference]: With dead ends: 2515 [2020-07-21 13:53:33,921 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 13:53:33,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 369 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 13:53:33,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 13:53:33,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 13:53:33,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 13:53:33,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 13:53:33,927 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 371 [2020-07-21 13:53:33,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:53:33,927 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 13:53:33,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:53:33,928 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 13:53:33,928 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 13:53:34,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:53:34,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 13:53:34,707 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 147 [2020-07-21 13:53:34,903 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 147 [2020-07-21 13:53:36,097 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 140 DAG size of output: 71 [2020-07-21 13:53:36,493 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 40 [2020-07-21 13:53:36,884 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 40 [2020-07-21 13:53:36,889 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 13:53:36,889 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a10~0 |old(~a10~0)|) (<= ~a1~0 |old(~a1~0)|) (<= |old(~a10~0)| ~a10~0) (<= |old(~a1~0)| ~a1~0) (<= ~a19~0 |old(~a19~0)|)) [2020-07-21 13:53:36,889 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 13:53:36,889 INFO L268 CegarLoopResult]: For program point L465(lines 465 572) no Hoare annotation was computed. [2020-07-21 13:53:36,890 INFO L268 CegarLoopResult]: For program point L201-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,890 INFO L268 CegarLoopResult]: For program point L168-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,890 INFO L268 CegarLoopResult]: For program point L135-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,890 INFO L268 CegarLoopResult]: For program point L102-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,890 INFO L268 CegarLoopResult]: For program point L69-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,890 INFO L268 CegarLoopResult]: For program point L36-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,890 INFO L268 CegarLoopResult]: For program point L499(lines 499 572) no Hoare annotation was computed. [2020-07-21 13:53:36,891 INFO L268 CegarLoopResult]: For program point L301(lines 301 572) no Hoare annotation was computed. [2020-07-21 13:53:36,891 INFO L268 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2020-07-21 13:53:36,891 INFO L268 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2020-07-21 13:53:36,891 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-07-21 13:53:36,891 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-07-21 13:53:36,892 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-07-21 13:53:36,892 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-07-21 13:53:36,892 INFO L268 CegarLoopResult]: For program point L335(lines 335 572) no Hoare annotation was computed. [2020-07-21 13:53:36,892 INFO L268 CegarLoopResult]: For program point L236(lines 236 572) no Hoare annotation was computed. [2020-07-21 13:53:36,892 INFO L268 CegarLoopResult]: For program point L534(lines 534 572) no Hoare annotation was computed. [2020-07-21 13:53:36,892 INFO L268 CegarLoopResult]: For program point L171-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,892 INFO L268 CegarLoopResult]: For program point L138-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,892 INFO L268 CegarLoopResult]: For program point L105-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,893 INFO L268 CegarLoopResult]: For program point L72-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,893 INFO L268 CegarLoopResult]: For program point L39-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,893 INFO L268 CegarLoopResult]: For program point L436(lines 436 572) no Hoare annotation was computed. [2020-07-21 13:53:36,893 INFO L268 CegarLoopResult]: For program point L403(lines 403 572) no Hoare annotation was computed. [2020-07-21 13:53:36,893 INFO L268 CegarLoopResult]: For program point L370(lines 370 572) no Hoare annotation was computed. [2020-07-21 13:53:36,893 INFO L268 CegarLoopResult]: For program point L271(lines 271 572) no Hoare annotation was computed. [2020-07-21 13:53:36,893 INFO L268 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2020-07-21 13:53:36,893 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-07-21 13:53:36,893 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-07-21 13:53:36,893 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-07-21 13:53:36,893 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-07-21 13:53:36,893 INFO L268 CegarLoopResult]: For program point L569(lines 569 572) no Hoare annotation was computed. [2020-07-21 13:53:36,893 INFO L268 CegarLoopResult]: For program point L239(lines 239 572) no Hoare annotation was computed. [2020-07-21 13:53:36,894 INFO L268 CegarLoopResult]: For program point L504(lines 504 572) no Hoare annotation was computed. [2020-07-21 13:53:36,894 INFO L268 CegarLoopResult]: For program point L471(lines 471 572) no Hoare annotation was computed. [2020-07-21 13:53:36,894 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 139) no Hoare annotation was computed. [2020-07-21 13:53:36,894 INFO L268 CegarLoopResult]: For program point L306(lines 306 572) no Hoare annotation was computed. [2020-07-21 13:53:36,894 INFO L268 CegarLoopResult]: For program point L174-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,894 INFO L268 CegarLoopResult]: For program point L141-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,894 INFO L268 CegarLoopResult]: For program point L108-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,894 INFO L268 CegarLoopResult]: For program point L75-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,894 INFO L268 CegarLoopResult]: For program point L42-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,894 INFO L268 CegarLoopResult]: For program point L340(lines 340 572) no Hoare annotation was computed. [2020-07-21 13:53:36,894 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-21 13:53:36,895 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-07-21 13:53:36,895 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-07-21 13:53:36,895 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-07-21 13:53:36,895 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-07-21 13:53:36,895 INFO L268 CegarLoopResult]: For program point L540(lines 540 572) no Hoare annotation was computed. [2020-07-21 13:53:36,895 INFO L268 CegarLoopResult]: For program point L408(lines 408 572) no Hoare annotation was computed. [2020-07-21 13:53:36,895 INFO L268 CegarLoopResult]: For program point L375(lines 375 572) no Hoare annotation was computed. [2020-07-21 13:53:36,895 INFO L268 CegarLoopResult]: For program point L210(lines 210 572) no Hoare annotation was computed. [2020-07-21 13:53:36,895 INFO L268 CegarLoopResult]: For program point L177-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,896 INFO L268 CegarLoopResult]: For program point L144-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,896 INFO L268 CegarLoopResult]: For program point L111-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,896 INFO L268 CegarLoopResult]: For program point L78-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,896 INFO L268 CegarLoopResult]: For program point L45-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,896 INFO L268 CegarLoopResult]: For program point L442(lines 442 572) no Hoare annotation was computed. [2020-07-21 13:53:36,896 INFO L268 CegarLoopResult]: For program point L277(lines 277 572) no Hoare annotation was computed. [2020-07-21 13:53:36,896 INFO L268 CegarLoopResult]: For program point L244(lines 244 572) no Hoare annotation was computed. [2020-07-21 13:53:36,896 INFO L268 CegarLoopResult]: For program point L178(line 178) no Hoare annotation was computed. [2020-07-21 13:53:36,897 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-07-21 13:53:36,897 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-07-21 13:53:36,897 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-07-21 13:53:36,897 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-21 13:53:36,897 INFO L268 CegarLoopResult]: For program point L509(lines 509 572) no Hoare annotation was computed. [2020-07-21 13:53:36,897 INFO L268 CegarLoopResult]: For program point L476(lines 476 572) no Hoare annotation was computed. [2020-07-21 13:53:36,897 INFO L268 CegarLoopResult]: For program point L378(lines 378 572) no Hoare annotation was computed. [2020-07-21 13:53:36,897 INFO L268 CegarLoopResult]: For program point L345(lines 345 572) no Hoare annotation was computed. [2020-07-21 13:53:36,898 INFO L268 CegarLoopResult]: For program point L312(lines 312 572) no Hoare annotation was computed. [2020-07-21 13:53:36,898 INFO L268 CegarLoopResult]: For program point L180-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,898 INFO L268 CegarLoopResult]: For program point L147-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,898 INFO L268 CegarLoopResult]: For program point L114-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,898 INFO L268 CegarLoopResult]: For program point L81-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,898 INFO L268 CegarLoopResult]: For program point L48-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,898 INFO L268 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2020-07-21 13:53:36,898 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-07-21 13:53:36,899 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-21 13:53:36,899 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-07-21 13:53:36,899 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-07-21 13:53:36,899 INFO L268 CegarLoopResult]: For program point L545(lines 545 572) no Hoare annotation was computed. [2020-07-21 13:53:36,899 INFO L268 CegarLoopResult]: For program point L215(lines 215 572) no Hoare annotation was computed. [2020-07-21 13:53:36,899 INFO L268 CegarLoopResult]: For program point L414(lines 414 572) no Hoare annotation was computed. [2020-07-21 13:53:36,899 INFO L268 CegarLoopResult]: For program point L249(lines 249 572) no Hoare annotation was computed. [2020-07-21 13:53:36,899 INFO L268 CegarLoopResult]: For program point L183-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,900 INFO L268 CegarLoopResult]: For program point L150-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,900 INFO L268 CegarLoopResult]: For program point L117-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,900 INFO L268 CegarLoopResult]: For program point L84-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,900 INFO L268 CegarLoopResult]: For program point L51-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,900 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,900 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,900 INFO L268 CegarLoopResult]: For program point L514(lines 514 572) no Hoare annotation was computed. [2020-07-21 13:53:36,900 INFO L268 CegarLoopResult]: For program point L481(lines 481 572) no Hoare annotation was computed. [2020-07-21 13:53:36,900 INFO L268 CegarLoopResult]: For program point L448(lines 448 572) no Hoare annotation was computed. [2020-07-21 13:53:36,901 INFO L268 CegarLoopResult]: For program point L283(lines 283 572) no Hoare annotation was computed. [2020-07-21 13:53:36,901 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-07-21 13:53:36,901 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-07-21 13:53:36,901 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-07-21 13:53:36,901 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-07-21 13:53:36,901 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-07-21 13:53:36,901 INFO L268 CegarLoopResult]: For program point L548(lines 548 572) no Hoare annotation was computed. [2020-07-21 13:53:36,901 INFO L268 CegarLoopResult]: For program point L383(lines 383 572) no Hoare annotation was computed. [2020-07-21 13:53:36,902 INFO L268 CegarLoopResult]: For program point L317(lines 317 572) no Hoare annotation was computed. [2020-07-21 13:53:36,902 INFO L268 CegarLoopResult]: For program point L351(lines 351 572) no Hoare annotation was computed. [2020-07-21 13:53:36,902 INFO L268 CegarLoopResult]: For program point L186-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,902 INFO L268 CegarLoopResult]: For program point L153-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,902 INFO L268 CegarLoopResult]: For program point L120-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,902 INFO L268 CegarLoopResult]: For program point L87-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,902 INFO L268 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-07-21 13:53:36,902 INFO L268 CegarLoopResult]: For program point L54-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,903 INFO L268 CegarLoopResult]: For program point L21-2(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,903 INFO L268 CegarLoopResult]: For program point L517(lines 517 572) no Hoare annotation was computed. [2020-07-21 13:53:36,903 INFO L268 CegarLoopResult]: For program point L286(lines 286 572) no Hoare annotation was computed. [2020-07-21 13:53:36,903 INFO L268 CegarLoopResult]: For program point L220(lines 220 572) no Hoare annotation was computed. [2020-07-21 13:53:36,903 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-21 13:53:36,903 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-07-21 13:53:36,903 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-07-21 13:53:36,903 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-07-21 13:53:36,903 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-07-21 13:53:36,904 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-21 13:53:36,904 INFO L268 CegarLoopResult]: For program point L419(lines 419 572) no Hoare annotation was computed. [2020-07-21 13:53:36,904 INFO L268 CegarLoopResult]: For program point L320(lines 320 572) no Hoare annotation was computed. [2020-07-21 13:53:36,904 INFO L268 CegarLoopResult]: For program point L254(lines 254 572) no Hoare annotation was computed. [2020-07-21 13:53:36,904 INFO L268 CegarLoopResult]: For program point L354(lines 354 572) no Hoare annotation was computed. [2020-07-21 13:53:36,904 INFO L268 CegarLoopResult]: For program point L189-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,904 INFO L268 CegarLoopResult]: For program point L156-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,904 INFO L268 CegarLoopResult]: For program point L123-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,905 INFO L268 CegarLoopResult]: For program point L90-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,905 INFO L268 CegarLoopResult]: For program point L57-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,905 INFO L268 CegarLoopResult]: For program point L24-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,905 INFO L268 CegarLoopResult]: For program point L487(lines 487 572) no Hoare annotation was computed. [2020-07-21 13:53:36,905 INFO L268 CegarLoopResult]: For program point L454(lines 454 572) no Hoare annotation was computed. [2020-07-21 13:53:36,905 INFO L268 CegarLoopResult]: For program point L388(lines 388 572) no Hoare annotation was computed. [2020-07-21 13:53:36,905 INFO L268 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2020-07-21 13:53:36,905 INFO L268 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2020-07-21 13:53:36,905 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-07-21 13:53:36,905 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-07-21 13:53:36,906 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-07-21 13:53:36,906 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-21 13:53:36,906 INFO L268 CegarLoopResult]: For program point L554(lines 554 572) no Hoare annotation was computed. [2020-07-21 13:53:36,906 INFO L268 CegarLoopResult]: For program point L323(lines 323 572) no Hoare annotation was computed. [2020-07-21 13:53:36,906 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 20 574) the Hoare annotation is: (let ((.cse3 (<= 8 ~a19~0)) (.cse5 (<= |old(~a1~0)| ~a1~0)) (.cse17 (<= 9 ~a19~0)) (.cse18 (<= 23 ~a1~0)) (.cse2 (<= ~a10~0 |old(~a10~0)|)) (.cse4 (<= ~a1~0 |old(~a1~0)|)) (.cse19 (<= |old(~a10~0)| ~a10~0)) (.cse6 (<= ~a19~0 |old(~a19~0)|))) (let ((.cse11 (and .cse2 .cse4 .cse19 .cse6)) (.cse15 (not (<= 3 |old(~a10~0)|))) (.cse1 (not (<= |old(~a19~0)| 9))) (.cse9 (not (<= |old(~a19~0)| 8))) (.cse13 (or .cse17 .cse18)) (.cse7 (<= 2 ~a10~0)) (.cse10 (not (< |old(~a10~0)| 4))) (.cse8 (not (<= 2 |old(~a10~0)|))) (.cse16 (and .cse2 .cse3 .cse4 .cse19 .cse5 .cse6)) (.cse0 (not (<= 8 |old(~a19~0)|))) (.cse14 (and (not (<= 23 |old(~a1~0)|)) (not (<= 9 |old(~a19~0)|)))) (.cse12 (not (<= |old(~a10~0)| 1)))) (and (or (not (< 218 |old(~a1~0)|)) .cse0 .cse1 (and .cse2 .cse3 .cse4 .cse5 .cse6 .cse7) .cse8) (or .cse3 .cse9 .cse0 .cse10 .cse8) (or .cse11 .cse12) (or (not (<= |old(~a1~0)| 23)) (and .cse2 .cse3 .cse4 .cse13 .cse5 .cse6 .cse7) .cse0 .cse10 .cse1 .cse14 .cse8) (or .cse9 (and .cse2 .cse4 (<= 7 ~a19~0) .cse5 .cse6 .cse7) (not (<= 7 |old(~a19~0)|)) .cse10 .cse8) (or .cse15 .cse11 .cse1) (or .cse16 .cse15 .cse0 .cse1) (or .cse9 (and .cse2 .cse4 .cse13 .cse6 .cse7) .cse10 .cse14 .cse8) (or .cse16 .cse0 .cse12) (or .cse17 .cse0 .cse18 .cse14 .cse12)))) [2020-07-21 13:53:36,907 INFO L268 CegarLoopResult]: For program point L357(lines 357 572) no Hoare annotation was computed. [2020-07-21 13:53:36,907 INFO L268 CegarLoopResult]: For program point L291(lines 291 572) no Hoare annotation was computed. [2020-07-21 13:53:36,907 INFO L268 CegarLoopResult]: For program point L225(lines 225 572) no Hoare annotation was computed. [2020-07-21 13:53:36,907 INFO L268 CegarLoopResult]: For program point L192-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,907 INFO L268 CegarLoopResult]: For program point L159-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,907 INFO L268 CegarLoopResult]: For program point L126-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,907 INFO L268 CegarLoopResult]: For program point L93-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,907 INFO L268 CegarLoopResult]: For program point L60-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,908 INFO L268 CegarLoopResult]: For program point L27-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,908 INFO L268 CegarLoopResult]: For program point L523(lines 523 572) no Hoare annotation was computed. [2020-07-21 13:53:36,908 INFO L268 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2020-07-21 13:53:36,908 INFO L268 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-07-21 13:53:36,908 INFO L268 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-07-21 13:53:36,908 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-07-21 13:53:36,908 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-07-21 13:53:36,908 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-07-21 13:53:36,908 INFO L268 CegarLoopResult]: For program point L557(lines 557 572) no Hoare annotation was computed. [2020-07-21 13:53:36,909 INFO L268 CegarLoopResult]: For program point L425(lines 425 572) no Hoare annotation was computed. [2020-07-21 13:53:36,909 INFO L268 CegarLoopResult]: For program point L326(lines 326 572) no Hoare annotation was computed. [2020-07-21 13:53:36,909 INFO L268 CegarLoopResult]: For program point L260(lines 260 572) no Hoare annotation was computed. [2020-07-21 13:53:36,909 INFO L268 CegarLoopResult]: For program point L393(lines 393 572) no Hoare annotation was computed. [2020-07-21 13:53:36,909 INFO L268 CegarLoopResult]: For program point L360(lines 360 572) no Hoare annotation was computed. [2020-07-21 13:53:36,909 INFO L268 CegarLoopResult]: For program point L195-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,909 INFO L268 CegarLoopResult]: For program point L162-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,909 INFO L268 CegarLoopResult]: For program point L129-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,909 INFO L268 CegarLoopResult]: For program point L96-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,910 INFO L268 CegarLoopResult]: For program point L63-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,910 INFO L268 CegarLoopResult]: For program point L30-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,910 INFO L268 CegarLoopResult]: For program point L526(lines 526 572) no Hoare annotation was computed. [2020-07-21 13:53:36,910 INFO L268 CegarLoopResult]: For program point L493(lines 493 572) no Hoare annotation was computed. [2020-07-21 13:53:36,910 INFO L268 CegarLoopResult]: For program point L460(lines 460 572) no Hoare annotation was computed. [2020-07-21 13:53:36,910 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-07-21 13:53:36,910 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-07-21 13:53:36,910 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-07-21 13:53:36,911 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-07-21 13:53:36,911 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-07-21 13:53:36,911 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-21 13:53:36,911 INFO L268 CegarLoopResult]: For program point L329(lines 329 572) no Hoare annotation was computed. [2020-07-21 13:53:36,911 INFO L268 CegarLoopResult]: For program point L296(lines 296 572) no Hoare annotation was computed. [2020-07-21 13:53:36,911 INFO L268 CegarLoopResult]: For program point L231(lines 231 572) no Hoare annotation was computed. [2020-07-21 13:53:36,911 INFO L268 CegarLoopResult]: For program point L198-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,911 INFO L268 CegarLoopResult]: For program point L165-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,911 INFO L268 CegarLoopResult]: For program point L132-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,912 INFO L268 CegarLoopResult]: For program point L99-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,912 INFO L268 CegarLoopResult]: For program point L66-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,912 INFO L268 CegarLoopResult]: For program point L33-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:36,912 INFO L268 CegarLoopResult]: For program point L529(lines 529 572) no Hoare annotation was computed. [2020-07-21 13:53:36,912 INFO L268 CegarLoopResult]: For program point L430(lines 430 572) no Hoare annotation was computed. [2020-07-21 13:53:36,912 INFO L268 CegarLoopResult]: For program point L265(lines 265 572) no Hoare annotation was computed. [2020-07-21 13:53:36,912 INFO L268 CegarLoopResult]: For program point L199(line 199) no Hoare annotation was computed. [2020-07-21 13:53:36,912 INFO L268 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2020-07-21 13:53:36,912 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-07-21 13:53:36,913 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-07-21 13:53:36,913 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-07-21 13:53:36,913 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-21 13:53:36,913 INFO L268 CegarLoopResult]: For program point L563(lines 563 572) no Hoare annotation was computed. [2020-07-21 13:53:36,913 INFO L268 CegarLoopResult]: For program point L398(lines 398 572) no Hoare annotation was computed. [2020-07-21 13:53:36,913 INFO L268 CegarLoopResult]: For program point L365(lines 365 572) no Hoare annotation was computed. [2020-07-21 13:53:36,913 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 13:53:36,913 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a10~0 0) (<= ~a19~0 9) (<= 9 ~a19~0) (<= ~a1~0 23) (<= 23 ~a1~0)) [2020-07-21 13:53:36,914 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 13:53:36,914 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 13:53:36,914 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 576 592) the Hoare annotation is: (or (not (<= 23 |old(~a1~0)|)) (not (<= |old(~a1~0)| 23)) (not (<= |old(~a10~0)| 0)) (not (<= 9 |old(~a19~0)|)) (and (<= 9 ~a19~0) (<= ~a10~0 |old(~a10~0)|) (<= ~a1~0 23) (<= |old(~a10~0)| ~a10~0) (<= |old(~a1~0)| ~a1~0) (<= ~a19~0 |old(~a19~0)|)) (not (<= |old(~a19~0)| 9))) [2020-07-21 13:53:36,914 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 576 592) no Hoare annotation was computed. [2020-07-21 13:53:36,914 INFO L264 CegarLoopResult]: At program point L590(line 590) the Hoare annotation is: (let ((.cse0 (<= ~a19~0 9)) (.cse1 (<= ~a19~0 8)) (.cse2 (or (<= 9 ~a19~0) (<= 23 ~a1~0)))) (or (not (<= 23 |old(~a1~0)|)) (<= ~a10~0 1) (not (<= |old(~a1~0)| 23)) (and .cse0 (< 218 ~a1~0)) (and .cse0 (<= 3 ~a10~0)) (not (<= |old(~a10~0)| 0)) (not (<= 9 |old(~a19~0)|)) (and .cse1 (<= 7 ~a19~0)) (not (<= |old(~a19~0)| 9)) (and .cse0 .cse2 (<= ~a1~0 23)) (and .cse1 .cse2))) [2020-07-21 13:53:36,914 INFO L268 CegarLoopResult]: For program point L590-1(line 590) no Hoare annotation was computed. [2020-07-21 13:53:36,914 INFO L268 CegarLoopResult]: For program point L587(line 587) no Hoare annotation was computed. [2020-07-21 13:53:36,915 INFO L264 CegarLoopResult]: At program point L582-2(lines 582 591) the Hoare annotation is: (let ((.cse0 (<= ~a19~0 9)) (.cse1 (<= ~a19~0 8)) (.cse2 (or (<= 9 ~a19~0) (<= 23 ~a1~0)))) (or (not (<= 23 |old(~a1~0)|)) (<= ~a10~0 1) (not (<= |old(~a1~0)| 23)) (and .cse0 (< 218 ~a1~0)) (and .cse0 (<= 3 ~a10~0)) (not (<= |old(~a10~0)| 0)) (not (<= 9 |old(~a19~0)|)) (and .cse1 (<= 7 ~a19~0)) (not (<= |old(~a19~0)| 9)) (and .cse0 .cse2 (<= ~a1~0 23)) (and .cse1 .cse2))) [2020-07-21 13:53:36,915 INFO L268 CegarLoopResult]: For program point L582-3(lines 576 592) no Hoare annotation was computed. [2020-07-21 13:53:36,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:53:36 BoogieIcfgContainer [2020-07-21 13:53:36,938 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 13:53:36,940 INFO L168 Benchmark]: Toolchain (without parser) took 23880.33 ms. Allocated memory was 144.7 MB in the beginning and 561.0 MB in the end (delta: 416.3 MB). Free memory was 99.4 MB in the beginning and 148.5 MB in the end (delta: -49.0 MB). Peak memory consumption was 380.8 MB. Max. memory is 7.1 GB. [2020-07-21 13:53:36,940 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 144.7 MB. Free memory is still 119.3 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 13:53:36,941 INFO L168 Benchmark]: CACSL2BoogieTranslator took 693.01 ms. Allocated memory was 144.7 MB in the beginning and 205.0 MB in the end (delta: 60.3 MB). Free memory was 99.4 MB in the beginning and 171.0 MB in the end (delta: -71.6 MB). Peak memory consumption was 31.8 MB. Max. memory is 7.1 GB. [2020-07-21 13:53:36,942 INFO L168 Benchmark]: Boogie Preprocessor took 113.00 ms. Allocated memory is still 205.0 MB. Free memory was 171.0 MB in the beginning and 166.9 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-07-21 13:53:36,943 INFO L168 Benchmark]: RCFGBuilder took 1488.73 ms. Allocated memory was 205.0 MB in the beginning and 237.0 MB in the end (delta: 32.0 MB). Free memory was 166.9 MB in the beginning and 183.0 MB in the end (delta: -16.1 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2020-07-21 13:53:36,944 INFO L168 Benchmark]: TraceAbstraction took 21575.73 ms. Allocated memory was 237.0 MB in the beginning and 561.0 MB in the end (delta: 324.0 MB). Free memory was 183.0 MB in the beginning and 148.5 MB in the end (delta: 34.5 MB). Peak memory consumption was 372.1 MB. Max. memory is 7.1 GB. [2020-07-21 13:53:36,947 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 144.7 MB. Free memory is still 119.3 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 693.01 ms. Allocated memory was 144.7 MB in the beginning and 205.0 MB in the end (delta: 60.3 MB). Free memory was 99.4 MB in the beginning and 171.0 MB in the end (delta: -71.6 MB). Peak memory consumption was 31.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.00 ms. Allocated memory is still 205.0 MB. Free memory was 171.0 MB in the beginning and 166.9 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1488.73 ms. Allocated memory was 205.0 MB in the beginning and 237.0 MB in the end (delta: 32.0 MB). Free memory was 166.9 MB in the beginning and 183.0 MB in the end (delta: -16.1 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 21575.73 ms. Allocated memory was 237.0 MB in the beginning and 561.0 MB in the end (delta: 324.0 MB). Free memory was 183.0 MB in the beginning and 148.5 MB in the end (delta: 34.5 MB). Peak memory consumption was 372.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 139]: 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: (((((((((!(23 <= \old(a1)) || a10 <= 1) || !(\old(a1) <= 23)) || (a19 <= 9 && 218 < a1)) || (a19 <= 9 && 3 <= a10)) || !(\old(a10) <= 0)) || !(9 <= \old(a19))) || (a19 <= 8 && 7 <= a19)) || !(\old(a19) <= 9)) || ((a19 <= 9 && (9 <= a19 || 23 <= a1)) && a1 <= 23)) || (a19 <= 8 && (9 <= a19 || 23 <= a1)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 18.7s, OverallIterations: 12, TraceHistogramMax: 4, AutomataDifference: 11.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 455 SDtfs, 2902 SDslu, 314 SDs, 0 SdLazy, 6981 SolverSat, 1390 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3667 GetRequests, 3607 SyntacticMatches, 6 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2515occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 12 MinimizatonAttempts, 1644 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 105 PreInvPairs, 153 NumberOfFragments, 528 HoareAnnotationTreeSize, 105 FomulaSimplifications, 43910 FormulaSimplificationTreeSizeReduction, 0.7s HoareSimplificationTime, 7 FomulaSimplificationsInter, 17077 FormulaSimplificationTreeSizeReductionInter, 1.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 2552 NumberOfCodeBlocks, 2552 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 3629 ConstructedInterpolants, 0 QuantifiedInterpolants, 2174017 SizeOfPredicates, 14 NumberOfNonLiveVariables, 4463 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 16 InterpolantComputations, 8 PerfectInterpolantSequences, 2590/2606 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...