/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 22:49:17,482 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-21 22:49:17,568 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 22:49:17,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 22:49:17,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 22:49:17,573 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 22:49:17,592 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 22:49:17,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 22:49:17,595 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 22:49:17,595 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 22:49:17,595 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 22:49:17,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 22:49:17,595 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 22:49:17,596 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 22:49:17,596 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 22:49:17,596 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 22:49:17,597 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 22:49:17,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 22:49:17,597 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 22:49:17,598 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 22:49:17,598 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 22:49:17,598 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 22:49:17,598 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 22:49:17,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 22:49:17,599 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 22:49:17,599 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 22:49:17,599 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 22:49:17,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 22:49:17,600 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 22:49:17,600 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 22:49:17,600 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 22:49:17,600 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 22:49:17,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:17,600 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 22:49:17,601 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 22:49:17,601 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 22:49:17,879 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 22:49:17,892 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 22:49:17,895 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 22:49:17,896 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 22:49:17,897 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 22:49:17,898 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label08.c [2020-07-21 22:49:17,959 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48279ceea/460679aeeb72424abf1c88e3999fe0c7/FLAG25cf1d1be [2020-07-21 22:49:18,487 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 22:49:18,488 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label08.c [2020-07-21 22:49:18,502 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48279ceea/460679aeeb72424abf1c88e3999fe0c7/FLAG25cf1d1be [2020-07-21 22:49:18,762 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48279ceea/460679aeeb72424abf1c88e3999fe0c7 [2020-07-21 22:49:18,771 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 22:49:18,775 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 22:49:18,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 22:49:18,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 22:49:18,780 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 22:49:18,781 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:49:18" (1/1) ... [2020-07-21 22:49:18,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@458b7631 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:49:18, skipping insertion in model container [2020-07-21 22:49:18,784 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:49:18" (1/1) ... [2020-07-21 22:49:18,792 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 22:49:18,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 22:49:19,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:49:19,273 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 22:49:19,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:49:19,486 INFO L208 MainTranslator]: Completed translation [2020-07-21 22:49:19,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:49:19 WrapperNode [2020-07-21 22:49:19,487 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 22:49:19,488 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 22:49:19,488 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 22:49:19,488 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 22:49:19,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:49:19" (1/1) ... [2020-07-21 22:49:19,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:49:19" (1/1) ... [2020-07-21 22:49:19,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:49:19" (1/1) ... [2020-07-21 22:49:19,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:49:19" (1/1) ... [2020-07-21 22:49:19,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:49:19" (1/1) ... [2020-07-21 22:49:19,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:49:19" (1/1) ... [2020-07-21 22:49:19,595 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:49:19" (1/1) ... [2020-07-21 22:49:19,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 22:49:19,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 22:49:19,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 22:49:19,604 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 22:49:19,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:49:19" (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 22:49:19,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 22:49:19,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 22:49:19,692 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 22:49:19,693 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 22:49:19,694 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 22:49:19,694 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 22:49:19,694 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 22:49:19,694 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 22:49:19,695 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 22:49:19,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 22:49:19,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 22:49:20,947 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 22:49:20,947 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 22:49:20,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:49:20 BoogieIcfgContainer [2020-07-21 22:49:20,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 22:49:20,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 22:49:20,955 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 22:49:20,958 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 22:49:20,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:49:18" (1/3) ... [2020-07-21 22:49:20,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d1a801 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:49:20, skipping insertion in model container [2020-07-21 22:49:20,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:49:19" (2/3) ... [2020-07-21 22:49:20,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d1a801 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:49:20, skipping insertion in model container [2020-07-21 22:49:20,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:49:20" (3/3) ... [2020-07-21 22:49:20,962 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label08.c [2020-07-21 22:49:20,973 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 22:49:20,981 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 22:49:20,995 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 22:49:21,021 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 22:49:21,022 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 22:49:21,022 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 22:49:21,022 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 22:49:21,022 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 22:49:21,022 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 22:49:21,023 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 22:49:21,023 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 22:49:21,046 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-07-21 22:49:21,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-07-21 22:49:21,059 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:49:21,061 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:49:21,061 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:49:21,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:49:21,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1920403729, now seen corresponding path program 1 times [2020-07-21 22:49:21,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:49:21,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1230237534] [2020-07-21 22:49:21,078 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:21,340 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:49:21,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:49:21,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 68 conjunts are in the unsatisfiable core [2020-07-21 22:49:21,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:49:21,687 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 31 [2020-07-21 22:49:21,831 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 29 [2020-07-21 22:49:22,278 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 22:49:22,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:49:22,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1230237534] [2020-07-21 22:49:22,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:49:22,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-21 22:49:22,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413798684] [2020-07-21 22:49:22,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-21 22:49:22,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:49:22,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-21 22:49:22,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-07-21 22:49:22,311 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 11 states. [2020-07-21 22:49:24,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:49:24,088 INFO L93 Difference]: Finished difference Result 472 states and 791 transitions. [2020-07-21 22:49:24,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 22:49:24,093 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 119 [2020-07-21 22:49:24,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:49:24,122 INFO L225 Difference]: With dead ends: 472 [2020-07-21 22:49:24,122 INFO L226 Difference]: Without dead ends: 203 [2020-07-21 22:49:24,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=102, Invalid=170, Unknown=0, NotChecked=0, Total=272 [2020-07-21 22:49:24,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-07-21 22:49:24,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-07-21 22:49:24,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-07-21 22:49:24,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 275 transitions. [2020-07-21 22:49:24,244 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 275 transitions. Word has length 119 [2020-07-21 22:49:24,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:49:24,245 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 275 transitions. [2020-07-21 22:49:24,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-21 22:49:24,245 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 275 transitions. [2020-07-21 22:49:24,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-07-21 22:49:24,253 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:49:24,253 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:49:24,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:24,468 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:49:24,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:49:24,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1091899828, now seen corresponding path program 1 times [2020-07-21 22:49:24,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:49:24,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548547360] [2020-07-21 22:49:24,469 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:24,587 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:49:24,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:49:24,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 48 conjunts are in the unsatisfiable core [2020-07-21 22:49:24,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:49:25,280 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:49:25,284 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2020-07-21 22:49:25,285 INFO L501 QuantifierPusher]: Distributing 1 conjuncts over 2 disjuncts [2020-07-21 22:49:25,381 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:49:25,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:49:26,138 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-07-21 22:49:26,293 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-07-21 22:49:26,448 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-07-21 22:49:26,586 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-07-21 22:49:26,592 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 7 conjuncts [2020-07-21 22:49:26,594 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 6 conjuncts [2020-07-21 22:49:26,595 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 5 conjuncts [2020-07-21 22:49:26,597 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 4 conjuncts [2020-07-21 22:49:26,598 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:49:26,599 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 2 conjuncts [2020-07-21 22:49:26,604 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 5 conjuncts [2020-07-21 22:49:26,605 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 4 conjuncts [2020-07-21 22:49:26,606 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:49:26,614 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:49:26,616 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:49:26,618 INFO L501 QuantifierPusher]: Distributing 14 disjuncts over 3 conjuncts [2020-07-21 22:49:26,620 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 22:49:26,621 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 22:49:26,622 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:49:26,625 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:49:26,627 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:49:26,628 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:49:26,629 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:49:26,631 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:49:26,632 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:49:26,637 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 22:49:26,638 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:49:26,641 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 22:49:26,642 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:49:27,238 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 37 [2020-07-21 22:49:27,242 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 8, 6, 7, 1] term [2020-07-21 22:49:27,243 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 22:49:27,305 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 22:49:27,306 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:27,368 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:27,400 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:27,612 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:49:27,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548547360] [2020-07-21 22:49:27,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:49:27,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 25 [2020-07-21 22:49:27,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126539083] [2020-07-21 22:49:27,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-21 22:49:27,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:49:27,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-21 22:49:27,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2020-07-21 22:49:27,628 INFO L87 Difference]: Start difference. First operand 203 states and 275 transitions. Second operand 25 states. [2020-07-21 22:49:28,682 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-07-21 22:49:29,254 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2020-07-21 22:49:29,595 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-07-21 22:49:30,092 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 22:49:30,314 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-07-21 22:49:30,804 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-07-21 22:49:33,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:49:33,495 INFO L93 Difference]: Finished difference Result 588 states and 878 transitions. [2020-07-21 22:49:33,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-21 22:49:33,498 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 127 [2020-07-21 22:49:33,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:49:33,503 INFO L225 Difference]: With dead ends: 588 [2020-07-21 22:49:33,503 INFO L226 Difference]: Without dead ends: 451 [2020-07-21 22:49:33,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 226 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=551, Invalid=1611, Unknown=0, NotChecked=0, Total=2162 [2020-07-21 22:49:33,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-07-21 22:49:33,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 417. [2020-07-21 22:49:33,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-07-21 22:49:33,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 548 transitions. [2020-07-21 22:49:33,552 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 548 transitions. Word has length 127 [2020-07-21 22:49:33,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:49:33,553 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 548 transitions. [2020-07-21 22:49:33,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-21 22:49:33,553 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 548 transitions. [2020-07-21 22:49:33,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-07-21 22:49:33,556 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:49:33,556 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:49:33,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:33,772 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:49:33,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:49:33,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1525536778, now seen corresponding path program 1 times [2020-07-21 22:49:33,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:49:33,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419307946] [2020-07-21 22:49:33,775 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:33,871 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:49:33,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:49:33,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 22:49:33,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:49:33,905 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:49:33,905 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:49:33,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419307946] [2020-07-21 22:49:33,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:49:33,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 22:49:33,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101239203] [2020-07-21 22:49:33,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 22:49:33,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:49:33,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 22:49:33,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:49:33,908 INFO L87 Difference]: Start difference. First operand 417 states and 548 transitions. Second operand 3 states. [2020-07-21 22:49:34,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:49:34,480 INFO L93 Difference]: Finished difference Result 1044 states and 1436 transitions. [2020-07-21 22:49:34,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 22:49:34,481 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 130 [2020-07-21 22:49:34,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:49:34,488 INFO L225 Difference]: With dead ends: 1044 [2020-07-21 22:49:34,488 INFO L226 Difference]: Without dead ends: 693 [2020-07-21 22:49:34,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 128 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 22:49:34,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2020-07-21 22:49:34,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 691. [2020-07-21 22:49:34,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-07-21 22:49:34,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 917 transitions. [2020-07-21 22:49:34,522 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 917 transitions. Word has length 130 [2020-07-21 22:49:34,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:49:34,523 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 917 transitions. [2020-07-21 22:49:34,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 22:49:34,523 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 917 transitions. [2020-07-21 22:49:34,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-07-21 22:49:34,527 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:49:34,527 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:49:34,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:34,738 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:49:34,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:49:34,739 INFO L82 PathProgramCache]: Analyzing trace with hash 783313171, now seen corresponding path program 1 times [2020-07-21 22:49:34,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:49:34,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202924914] [2020-07-21 22:49:34,740 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:34,836 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 22:49:34,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:49:34,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:49:34,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:49:34,895 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:49:34,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:49:35,008 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:49:35,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202924914] [2020-07-21 22:49:35,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:49:35,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-07-21 22:49:35,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585234057] [2020-07-21 22:49:35,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 22:49:35,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:49:35,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 22:49:35,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-07-21 22:49:35,012 INFO L87 Difference]: Start difference. First operand 691 states and 917 transitions. Second operand 8 states. [2020-07-21 22:49:36,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:49:36,357 INFO L93 Difference]: Finished difference Result 2454 states and 3533 transitions. [2020-07-21 22:49:36,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 22:49:36,358 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 143 [2020-07-21 22:49:36,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:49:36,374 INFO L225 Difference]: With dead ends: 2454 [2020-07-21 22:49:36,375 INFO L226 Difference]: Without dead ends: 1829 [2020-07-21 22:49:36,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-07-21 22:49:36,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1829 states. [2020-07-21 22:49:36,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1829 to 1801. [2020-07-21 22:49:36,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1801 states. [2020-07-21 22:49:36,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1801 states to 1801 states and 2419 transitions. [2020-07-21 22:49:36,452 INFO L78 Accepts]: Start accepts. Automaton has 1801 states and 2419 transitions. Word has length 143 [2020-07-21 22:49:36,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:49:36,452 INFO L479 AbstractCegarLoop]: Abstraction has 1801 states and 2419 transitions. [2020-07-21 22:49:36,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 22:49:36,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1801 states and 2419 transitions. [2020-07-21 22:49:36,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-07-21 22:49:36,459 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:49:36,459 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:49:36,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:36,674 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:49:36,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:49:36,674 INFO L82 PathProgramCache]: Analyzing trace with hash 509652639, now seen corresponding path program 1 times [2020-07-21 22:49:36,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:49:36,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150462207] [2020-07-21 22:49:36,675 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:36,758 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 22:49:36,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:49:36,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:49:36,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:49:36,816 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:49:36,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:49:36,931 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:49:36,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150462207] [2020-07-21 22:49:36,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:49:36,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-07-21 22:49:36,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991963173] [2020-07-21 22:49:36,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 22:49:36,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:49:36,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 22:49:36,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-07-21 22:49:36,935 INFO L87 Difference]: Start difference. First operand 1801 states and 2419 transitions. Second operand 8 states. [2020-07-21 22:49:38,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:49:38,730 INFO L93 Difference]: Finished difference Result 6067 states and 8223 transitions. [2020-07-21 22:49:38,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 22:49:38,731 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 149 [2020-07-21 22:49:38,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:49:38,754 INFO L225 Difference]: With dead ends: 6067 [2020-07-21 22:49:38,754 INFO L226 Difference]: Without dead ends: 4332 [2020-07-21 22:49:38,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-07-21 22:49:38,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4332 states. [2020-07-21 22:49:38,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4332 to 3447. [2020-07-21 22:49:38,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3447 states. [2020-07-21 22:49:38,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3447 states to 3447 states and 4502 transitions. [2020-07-21 22:49:38,870 INFO L78 Accepts]: Start accepts. Automaton has 3447 states and 4502 transitions. Word has length 149 [2020-07-21 22:49:38,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:49:38,870 INFO L479 AbstractCegarLoop]: Abstraction has 3447 states and 4502 transitions. [2020-07-21 22:49:38,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 22:49:38,871 INFO L276 IsEmpty]: Start isEmpty. Operand 3447 states and 4502 transitions. [2020-07-21 22:49:38,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-07-21 22:49:38,880 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:49:38,881 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:49:39,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:39,094 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:49:39,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:49:39,095 INFO L82 PathProgramCache]: Analyzing trace with hash 941995943, now seen corresponding path program 1 times [2020-07-21 22:49:39,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:49:39,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095256353] [2020-07-21 22:49:39,096 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:39,212 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 22:49:39,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:49:39,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 22:49:39,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:49:39,253 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:49:39,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:49:39,324 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:49:39,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095256353] [2020-07-21 22:49:39,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:49:39,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:49:39,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109949066] [2020-07-21 22:49:39,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:49:39,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:49:39,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:49:39,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:49:39,327 INFO L87 Difference]: Start difference. First operand 3447 states and 4502 transitions. Second operand 7 states. [2020-07-21 22:49:40,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:49:40,167 INFO L93 Difference]: Finished difference Result 6441 states and 8411 transitions. [2020-07-21 22:49:40,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 22:49:40,168 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 153 [2020-07-21 22:49:40,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:49:40,186 INFO L225 Difference]: With dead ends: 6441 [2020-07-21 22:49:40,187 INFO L226 Difference]: Without dead ends: 3872 [2020-07-21 22:49:40,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-07-21 22:49:40,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3872 states. [2020-07-21 22:49:40,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3872 to 3451. [2020-07-21 22:49:40,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3451 states. [2020-07-21 22:49:40,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3451 states to 3451 states and 4328 transitions. [2020-07-21 22:49:40,294 INFO L78 Accepts]: Start accepts. Automaton has 3451 states and 4328 transitions. Word has length 153 [2020-07-21 22:49:40,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:49:40,295 INFO L479 AbstractCegarLoop]: Abstraction has 3451 states and 4328 transitions. [2020-07-21 22:49:40,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:49:40,295 INFO L276 IsEmpty]: Start isEmpty. Operand 3451 states and 4328 transitions. [2020-07-21 22:49:40,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-07-21 22:49:40,305 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:49:40,305 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:49:40,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:40,519 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:49:40,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:49:40,520 INFO L82 PathProgramCache]: Analyzing trace with hash -840958220, now seen corresponding path program 1 times [2020-07-21 22:49:40,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:49:40,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158267718] [2020-07-21 22:49:40,521 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:40,621 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 22:49:40,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:49:40,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 22:49:40,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:49:40,742 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-07-21 22:49:40,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:49:40,949 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-07-21 22:49:40,984 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:40,986 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 22:49:40,986 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:40,987 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:40,988 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:40,988 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[4, 2, 1] term [2020-07-21 22:49:40,988 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:41,088 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-07-21 22:49:41,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158267718] [2020-07-21 22:49:41,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:49:41,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:49:41,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665327081] [2020-07-21 22:49:41,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:49:41,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:49:41,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:49:41,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:49:41,091 INFO L87 Difference]: Start difference. First operand 3451 states and 4328 transitions. Second operand 7 states. [2020-07-21 22:49:42,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:49:42,455 INFO L93 Difference]: Finished difference Result 5797 states and 7163 transitions. [2020-07-21 22:49:42,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 22:49:42,463 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 165 [2020-07-21 22:49:42,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:49:42,478 INFO L225 Difference]: With dead ends: 5797 [2020-07-21 22:49:42,478 INFO L226 Difference]: Without dead ends: 3085 [2020-07-21 22:49:42,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 326 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-07-21 22:49:42,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3085 states. [2020-07-21 22:49:42,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3085 to 2615. [2020-07-21 22:49:42,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2615 states. [2020-07-21 22:49:42,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2615 states to 2615 states and 3087 transitions. [2020-07-21 22:49:42,560 INFO L78 Accepts]: Start accepts. Automaton has 2615 states and 3087 transitions. Word has length 165 [2020-07-21 22:49:42,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:49:42,560 INFO L479 AbstractCegarLoop]: Abstraction has 2615 states and 3087 transitions. [2020-07-21 22:49:42,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:49:42,560 INFO L276 IsEmpty]: Start isEmpty. Operand 2615 states and 3087 transitions. [2020-07-21 22:49:42,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-07-21 22:49:42,569 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:49:42,569 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:49:42,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:42,784 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:49:42,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:49:42,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1226002440, now seen corresponding path program 1 times [2020-07-21 22:49:42,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:49:42,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444812411] [2020-07-21 22:49:42,786 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:42,926 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:49:42,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:49:42,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 22:49:42,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:49:42,992 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-07-21 22:49:42,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:49:43,213 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2020-07-21 22:49:43,261 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 22:49:43,261 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:43,262 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:49:43,263 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:43,263 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:43,264 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:43,265 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 22:49:43,265 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:43,395 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 84 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-07-21 22:49:43,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444812411] [2020-07-21 22:49:43,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:49:43,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:49:43,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935316058] [2020-07-21 22:49:43,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:49:43,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:49:43,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:49:43,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:49:43,397 INFO L87 Difference]: Start difference. First operand 2615 states and 3087 transitions. Second operand 7 states. [2020-07-21 22:49:44,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:49:44,556 INFO L93 Difference]: Finished difference Result 6423 states and 7719 transitions. [2020-07-21 22:49:44,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 22:49:44,557 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 195 [2020-07-21 22:49:44,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:49:44,625 INFO L225 Difference]: With dead ends: 6423 [2020-07-21 22:49:44,626 INFO L226 Difference]: Without dead ends: 3590 [2020-07-21 22:49:44,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 388 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-07-21 22:49:44,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3590 states. [2020-07-21 22:49:44,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3590 to 3306. [2020-07-21 22:49:44,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3306 states. [2020-07-21 22:49:44,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3306 states to 3306 states and 3772 transitions. [2020-07-21 22:49:44,707 INFO L78 Accepts]: Start accepts. Automaton has 3306 states and 3772 transitions. Word has length 195 [2020-07-21 22:49:44,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:49:44,708 INFO L479 AbstractCegarLoop]: Abstraction has 3306 states and 3772 transitions. [2020-07-21 22:49:44,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:49:44,708 INFO L276 IsEmpty]: Start isEmpty. Operand 3306 states and 3772 transitions. [2020-07-21 22:49:44,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-07-21 22:49:44,718 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:49:44,719 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:49:44,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:44,933 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:49:44,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:49:44,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1915292355, now seen corresponding path program 1 times [2020-07-21 22:49:44,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:49:44,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477794388] [2020-07-21 22:49:44,935 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 22:49:45,053 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:49:45,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:49:45,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-21 22:49:45,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:49:45,084 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 6, 1] term [2020-07-21 22:49:45,084 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:49:45,151 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 118 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-07-21 22:49:45,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:49:45,369 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2020-07-21 22:49:45,421 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:49:45,422 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:45,422 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:45,423 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:45,424 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 2, 2, 1] term [2020-07-21 22:49:45,424 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:49:45,425 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 1] term [2020-07-21 22:49:45,425 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:49:45,426 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 22:49:45,426 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:45,427 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:45,427 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:45,428 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:49:45,428 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:45,461 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:49:45,516 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:45,519 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:49:45,692 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 103 proven. 42 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-21 22:49:45,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477794388] [2020-07-21 22:49:45,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:49:45,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 8 [2020-07-21 22:49:45,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269877580] [2020-07-21 22:49:45,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 22:49:45,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:49:45,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 22:49:45,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-07-21 22:49:45,695 INFO L87 Difference]: Start difference. First operand 3306 states and 3772 transitions. Second operand 8 states. [2020-07-21 22:49:46,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:49:46,722 INFO L93 Difference]: Finished difference Result 5764 states and 6605 transitions. [2020-07-21 22:49:46,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 22:49:46,724 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 212 [2020-07-21 22:49:46,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:49:46,737 INFO L225 Difference]: With dead ends: 5764 [2020-07-21 22:49:46,738 INFO L226 Difference]: Without dead ends: 3463 [2020-07-21 22:49:46,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 419 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-07-21 22:49:46,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3463 states. [2020-07-21 22:49:46,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3463 to 3167. [2020-07-21 22:49:46,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3167 states. [2020-07-21 22:49:46,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3167 states to 3167 states and 3585 transitions. [2020-07-21 22:49:46,819 INFO L78 Accepts]: Start accepts. Automaton has 3167 states and 3585 transitions. Word has length 212 [2020-07-21 22:49:46,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:49:46,820 INFO L479 AbstractCegarLoop]: Abstraction has 3167 states and 3585 transitions. [2020-07-21 22:49:46,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 22:49:46,820 INFO L276 IsEmpty]: Start isEmpty. Operand 3167 states and 3585 transitions. [2020-07-21 22:49:46,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-07-21 22:49:46,829 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:49:46,830 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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 22:49:47,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:47,045 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:49:47,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:49:47,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1122904089, now seen corresponding path program 1 times [2020-07-21 22:49:47,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:49:47,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819120969] [2020-07-21 22:49:47,047 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 22:49:47,170 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:49:47,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:49:47,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:49:47,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:49:47,229 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-07-21 22:49:47,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:49:47,321 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 162 proven. 33 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-07-21 22:49:47,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819120969] [2020-07-21 22:49:47,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:49:47,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:49:47,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181268706] [2020-07-21 22:49:47,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:49:47,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:49:47,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:49:47,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:49:47,324 INFO L87 Difference]: Start difference. First operand 3167 states and 3585 transitions. Second operand 7 states. [2020-07-21 22:49:48,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:49:48,453 INFO L93 Difference]: Finished difference Result 6683 states and 7566 transitions. [2020-07-21 22:49:48,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 22:49:48,455 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 246 [2020-07-21 22:49:48,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:49:48,467 INFO L225 Difference]: With dead ends: 6683 [2020-07-21 22:49:48,467 INFO L226 Difference]: Without dead ends: 3439 [2020-07-21 22:49:48,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 489 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-07-21 22:49:48,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3439 states. [2020-07-21 22:49:48,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3439 to 2754. [2020-07-21 22:49:48,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2754 states. [2020-07-21 22:49:48,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2754 states to 2754 states and 3023 transitions. [2020-07-21 22:49:48,533 INFO L78 Accepts]: Start accepts. Automaton has 2754 states and 3023 transitions. Word has length 246 [2020-07-21 22:49:48,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:49:48,534 INFO L479 AbstractCegarLoop]: Abstraction has 2754 states and 3023 transitions. [2020-07-21 22:49:48,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:49:48,534 INFO L276 IsEmpty]: Start isEmpty. Operand 2754 states and 3023 transitions. [2020-07-21 22:49:48,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-07-21 22:49:48,543 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:49:48,544 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-07-21 22:49:48,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:48,758 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:49:48,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:49:48,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1100042581, now seen corresponding path program 1 times [2020-07-21 22:49:48,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:49:48,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770505308] [2020-07-21 22:49:48,760 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 22:49:48,917 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:49:48,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:49:48,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 22:49:48,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:49:49,006 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 215 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-07-21 22:49:49,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:49:49,201 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-07-21 22:49:49,239 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:49,240 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 1] term [2020-07-21 22:49:49,240 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:49,241 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 22:49:49,241 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:49,241 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:49,399 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 181 proven. 15 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-07-21 22:49:49,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770505308] [2020-07-21 22:49:49,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:49:49,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:49:49,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084056964] [2020-07-21 22:49:49,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:49:49,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:49:49,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:49:49,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:49:49,401 INFO L87 Difference]: Start difference. First operand 2754 states and 3023 transitions. Second operand 7 states. [2020-07-21 22:49:50,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:49:50,603 INFO L93 Difference]: Finished difference Result 4912 states and 5401 transitions. [2020-07-21 22:49:50,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 22:49:50,603 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 273 [2020-07-21 22:49:50,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:49:50,614 INFO L225 Difference]: With dead ends: 4912 [2020-07-21 22:49:50,614 INFO L226 Difference]: Without dead ends: 3173 [2020-07-21 22:49:50,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 544 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-07-21 22:49:50,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3173 states. [2020-07-21 22:49:50,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3173 to 3034. [2020-07-21 22:49:50,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3034 states. [2020-07-21 22:49:50,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3034 states to 3034 states and 3336 transitions. [2020-07-21 22:49:50,681 INFO L78 Accepts]: Start accepts. Automaton has 3034 states and 3336 transitions. Word has length 273 [2020-07-21 22:49:50,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:49:50,682 INFO L479 AbstractCegarLoop]: Abstraction has 3034 states and 3336 transitions. [2020-07-21 22:49:50,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:49:50,682 INFO L276 IsEmpty]: Start isEmpty. Operand 3034 states and 3336 transitions. [2020-07-21 22:49:50,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-07-21 22:49:50,692 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:49:50,692 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 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] [2020-07-21 22:49:50,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:50,908 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:49:50,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:49:50,909 INFO L82 PathProgramCache]: Analyzing trace with hash -512887194, now seen corresponding path program 1 times [2020-07-21 22:49:50,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:49:50,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328355159] [2020-07-21 22:49:50,910 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 22:49:51,071 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:49:51,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:49:51,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 22:49:51,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:49:51,101 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 2, 1] term [2020-07-21 22:49:51,101 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 22:49:51,174 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 237 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 22:49:51,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:49:51,281 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 22:49:51,282 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:51,320 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:49:51,545 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 237 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 22:49:51,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328355159] [2020-07-21 22:49:51,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:49:51,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:49:51,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556361713] [2020-07-21 22:49:51,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:49:51,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:49:51,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:49:51,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:49:51,548 INFO L87 Difference]: Start difference. First operand 3034 states and 3336 transitions. Second operand 7 states. [2020-07-21 22:49:52,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:49:52,540 INFO L93 Difference]: Finished difference Result 4944 states and 5463 transitions. [2020-07-21 22:49:52,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 22:49:52,541 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 286 [2020-07-21 22:49:52,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:49:52,562 INFO L225 Difference]: With dead ends: 4944 [2020-07-21 22:49:52,562 INFO L226 Difference]: Without dead ends: 3062 [2020-07-21 22:49:52,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 568 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-07-21 22:49:52,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3062 states. [2020-07-21 22:49:52,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3062 to 3040. [2020-07-21 22:49:52,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3040 states. [2020-07-21 22:49:52,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3040 states to 3040 states and 3323 transitions. [2020-07-21 22:49:52,617 INFO L78 Accepts]: Start accepts. Automaton has 3040 states and 3323 transitions. Word has length 286 [2020-07-21 22:49:52,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:49:52,617 INFO L479 AbstractCegarLoop]: Abstraction has 3040 states and 3323 transitions. [2020-07-21 22:49:52,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:49:52,618 INFO L276 IsEmpty]: Start isEmpty. Operand 3040 states and 3323 transitions. [2020-07-21 22:49:52,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-07-21 22:49:52,628 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:49:52,628 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 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] [2020-07-21 22:49:52,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:52,842 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:49:52,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:49:52,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1168988174, now seen corresponding path program 1 times [2020-07-21 22:49:52,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:49:52,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650025100] [2020-07-21 22:49:52,844 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:53,042 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:49:53,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:49:53,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 22:49:53,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:49:53,157 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 297 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 22:49:53,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:49:53,285 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 22:49:53,286 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:53,450 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 297 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 22:49:53,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650025100] [2020-07-21 22:49:53,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:49:53,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:49:53,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943814710] [2020-07-21 22:49:53,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:49:53,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:49:53,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:49:53,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:49:53,452 INFO L87 Difference]: Start difference. First operand 3040 states and 3323 transitions. Second operand 7 states. [2020-07-21 22:49:54,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:49:54,647 INFO L93 Difference]: Finished difference Result 6018 states and 6579 transitions. [2020-07-21 22:49:54,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 22:49:54,648 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 306 [2020-07-21 22:49:54,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:49:54,654 INFO L225 Difference]: With dead ends: 6018 [2020-07-21 22:49:54,655 INFO L226 Difference]: Without dead ends: 3044 [2020-07-21 22:49:54,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 621 GetRequests, 610 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-07-21 22:49:54,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3044 states. [2020-07-21 22:49:54,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3044 to 1950. [2020-07-21 22:49:54,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1950 states. [2020-07-21 22:49:54,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1950 states to 1950 states and 2055 transitions. [2020-07-21 22:49:54,697 INFO L78 Accepts]: Start accepts. Automaton has 1950 states and 2055 transitions. Word has length 306 [2020-07-21 22:49:54,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:49:54,697 INFO L479 AbstractCegarLoop]: Abstraction has 1950 states and 2055 transitions. [2020-07-21 22:49:54,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:49:54,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1950 states and 2055 transitions. [2020-07-21 22:49:54,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-07-21 22:49:54,705 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:49:54,706 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-07-21 22:49:54,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:54,919 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:49:54,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:49:54,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1620224307, now seen corresponding path program 1 times [2020-07-21 22:49:54,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:49:54,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928793479] [2020-07-21 22:49:54,920 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:55,105 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:49:55,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:49:55,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:49:55,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:49:55,219 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2020-07-21 22:49:55,219 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:49:55,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [928793479] [2020-07-21 22:49:55,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:49:55,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 22:49:55,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460247928] [2020-07-21 22:49:55,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 22:49:55,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:49:55,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 22:49:55,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:49:55,221 INFO L87 Difference]: Start difference. First operand 1950 states and 2055 transitions. Second operand 3 states. [2020-07-21 22:49:55,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:49:55,667 INFO L93 Difference]: Finished difference Result 2087 states and 2192 transitions. [2020-07-21 22:49:55,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 22:49:55,668 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 315 [2020-07-21 22:49:55,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:49:55,673 INFO L225 Difference]: With dead ends: 2087 [2020-07-21 22:49:55,674 INFO L226 Difference]: Without dead ends: 1948 [2020-07-21 22:49:55,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 313 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 22:49:55,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1948 states. [2020-07-21 22:49:55,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1948 to 1948. [2020-07-21 22:49:55,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1948 states. [2020-07-21 22:49:55,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 2052 transitions. [2020-07-21 22:49:55,706 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 2052 transitions. Word has length 315 [2020-07-21 22:49:55,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:49:55,707 INFO L479 AbstractCegarLoop]: Abstraction has 1948 states and 2052 transitions. [2020-07-21 22:49:55,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 22:49:55,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 2052 transitions. [2020-07-21 22:49:55,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-07-21 22:49:55,717 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:49:55,717 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-07-21 22:49:55,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:55,932 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:49:55,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:49:55,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1006740059, now seen corresponding path program 1 times [2020-07-21 22:49:55,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:49:55,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886629424] [2020-07-21 22:49:55,934 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:56,114 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:49:56,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:49:56,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 735 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-21 22:49:56,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:49:56,165 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 1] term [2020-07-21 22:49:56,165 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:49:56,288 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 434 proven. 6 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 22:49:56,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:49:56,408 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:49:56,408 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:56,409 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:56,409 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:56,409 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:56,436 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:49:56,493 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:56,514 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:49:56,686 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 407 proven. 33 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 22:49:56,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886629424] [2020-07-21 22:49:56,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:49:56,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2020-07-21 22:49:56,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615511369] [2020-07-21 22:49:56,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-21 22:49:56,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:49:56,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-21 22:49:56,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-07-21 22:49:56,688 INFO L87 Difference]: Start difference. First operand 1948 states and 2052 transitions. Second operand 12 states. [2020-07-21 22:49:58,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:49:58,940 INFO L93 Difference]: Finished difference Result 4140 states and 4417 transitions. [2020-07-21 22:49:58,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-21 22:49:58,941 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 335 [2020-07-21 22:49:58,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:49:58,947 INFO L225 Difference]: With dead ends: 4140 [2020-07-21 22:49:58,947 INFO L226 Difference]: Without dead ends: 2258 [2020-07-21 22:49:58,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 698 GetRequests, 672 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=201, Invalid=501, Unknown=0, NotChecked=0, Total=702 [2020-07-21 22:49:58,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2258 states. [2020-07-21 22:49:58,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2258 to 2081. [2020-07-21 22:49:58,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2081 states. [2020-07-21 22:49:58,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2081 states to 2081 states and 2183 transitions. [2020-07-21 22:49:58,992 INFO L78 Accepts]: Start accepts. Automaton has 2081 states and 2183 transitions. Word has length 335 [2020-07-21 22:49:58,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:49:58,993 INFO L479 AbstractCegarLoop]: Abstraction has 2081 states and 2183 transitions. [2020-07-21 22:49:58,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-21 22:49:58,994 INFO L276 IsEmpty]: Start isEmpty. Operand 2081 states and 2183 transitions. [2020-07-21 22:49:59,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2020-07-21 22:49:59,002 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:49:59,003 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 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] [2020-07-21 22:49:59,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:59,219 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:49:59,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:49:59,220 INFO L82 PathProgramCache]: Analyzing trace with hash 335958451, now seen corresponding path program 1 times [2020-07-21 22:49:59,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:49:59,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861159639] [2020-07-21 22:49:59,221 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:59,454 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:49:59,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:49:59,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:49:59,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:49:59,520 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 233 proven. 0 refuted. 0 times theorem prover too weak. 394 trivial. 0 not checked. [2020-07-21 22:49:59,520 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:49:59,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861159639] [2020-07-21 22:49:59,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:49:59,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 22:49:59,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011436539] [2020-07-21 22:49:59,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 22:49:59,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:49:59,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 22:49:59,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:49:59,523 INFO L87 Difference]: Start difference. First operand 2081 states and 2183 transitions. Second operand 3 states. [2020-07-21 22:49:59,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:49:59,963 INFO L93 Difference]: Finished difference Result 2081 states and 2183 transitions. [2020-07-21 22:49:59,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 22:49:59,964 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 355 [2020-07-21 22:49:59,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:49:59,965 INFO L225 Difference]: With dead ends: 2081 [2020-07-21 22:49:59,965 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 22:49:59,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 353 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 22:49:59,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 22:49:59,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 22:49:59,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 22:49:59,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 22:49:59,970 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 355 [2020-07-21 22:49:59,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:49:59,970 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 22:49:59,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 22:49:59,970 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 22:49:59,971 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 22:50:00,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:50:00,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 22:50:01,114 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 280 DAG size of output: 258 [2020-07-21 22:50:01,467 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 249 [2020-07-21 22:50:04,295 WARN L193 SmtUtils]: Spent 2.70 s on a formula simplification. DAG size of input: 311 DAG size of output: 111 [2020-07-21 22:50:05,678 WARN L193 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 268 DAG size of output: 73 [2020-07-21 22:50:07,006 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 259 DAG size of output: 73 [2020-07-21 22:50:07,010 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 22:50:07,010 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a8~0 |old(~a8~0)|) (<= ~a16~0 |old(~a16~0)|) (= ~a7~0 |old(~a7~0)|) (= ~a17~0 |old(~a17~0)|) (<= |old(~a16~0)| ~a16~0) (= ~a20~0 |old(~a20~0)|) (= ~a21~0 |old(~a21~0)|)) [2020-07-21 22:50:07,010 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 22:50:07,010 INFO L268 CegarLoopResult]: For program point L333(lines 333 390) no Hoare annotation was computed. [2020-07-21 22:50:07,010 INFO L268 CegarLoopResult]: For program point L102(lines 102 390) no Hoare annotation was computed. [2020-07-21 22:50:07,011 INFO L268 CegarLoopResult]: For program point L565-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,011 INFO L268 CegarLoopResult]: For program point L532-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,011 INFO L268 CegarLoopResult]: For program point L499-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,011 INFO L268 CegarLoopResult]: For program point L466-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,011 INFO L268 CegarLoopResult]: For program point L433-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,011 INFO L268 CegarLoopResult]: For program point L400-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,011 INFO L268 CegarLoopResult]: For program point L268(lines 268 390) no Hoare annotation was computed. [2020-07-21 22:50:07,011 INFO L268 CegarLoopResult]: For program point L136(lines 136 390) no Hoare annotation was computed. [2020-07-21 22:50:07,012 INFO L268 CegarLoopResult]: For program point L566(line 566) no Hoare annotation was computed. [2020-07-21 22:50:07,012 INFO L268 CegarLoopResult]: For program point L533(line 533) no Hoare annotation was computed. [2020-07-21 22:50:07,012 INFO L268 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2020-07-21 22:50:07,012 INFO L268 CegarLoopResult]: For program point L467(line 467) no Hoare annotation was computed. [2020-07-21 22:50:07,012 INFO L268 CegarLoopResult]: For program point L434(line 434) no Hoare annotation was computed. [2020-07-21 22:50:07,012 INFO L268 CegarLoopResult]: For program point L401(line 401) no Hoare annotation was computed. [2020-07-21 22:50:07,012 INFO L268 CegarLoopResult]: For program point L203(lines 203 390) no Hoare annotation was computed. [2020-07-21 22:50:07,012 INFO L268 CegarLoopResult]: For program point L72(lines 72 390) no Hoare annotation was computed. [2020-07-21 22:50:07,012 INFO L268 CegarLoopResult]: For program point L568-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,012 INFO L268 CegarLoopResult]: For program point L535-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,013 INFO L268 CegarLoopResult]: For program point L502-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,013 INFO L268 CegarLoopResult]: For program point L469-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,013 INFO L268 CegarLoopResult]: For program point L436-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,013 INFO L268 CegarLoopResult]: For program point L403-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,013 INFO L268 CegarLoopResult]: For program point L337(lines 337 390) no Hoare annotation was computed. [2020-07-21 22:50:07,013 INFO L268 CegarLoopResult]: For program point L238(lines 238 390) no Hoare annotation was computed. [2020-07-21 22:50:07,013 INFO L268 CegarLoopResult]: For program point L569(line 569) no Hoare annotation was computed. [2020-07-21 22:50:07,013 INFO L268 CegarLoopResult]: For program point L536(line 536) no Hoare annotation was computed. [2020-07-21 22:50:07,013 INFO L268 CegarLoopResult]: For program point L503(line 503) no Hoare annotation was computed. [2020-07-21 22:50:07,014 INFO L268 CegarLoopResult]: For program point L470(line 470) no Hoare annotation was computed. [2020-07-21 22:50:07,014 INFO L268 CegarLoopResult]: For program point L437(line 437) no Hoare annotation was computed. [2020-07-21 22:50:07,014 INFO L268 CegarLoopResult]: For program point L404(line 404) no Hoare annotation was computed. [2020-07-21 22:50:07,014 INFO L268 CegarLoopResult]: For program point L173(lines 173 390) no Hoare annotation was computed. [2020-07-21 22:50:07,014 INFO L268 CegarLoopResult]: For program point L140(lines 140 390) no Hoare annotation was computed. [2020-07-21 22:50:07,014 INFO L268 CegarLoopResult]: For program point L372(lines 372 390) no Hoare annotation was computed. [2020-07-21 22:50:07,014 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 515) no Hoare annotation was computed. [2020-07-21 22:50:07,014 INFO L268 CegarLoopResult]: For program point L306(lines 306 390) no Hoare annotation was computed. [2020-07-21 22:50:07,015 INFO L268 CegarLoopResult]: For program point L273(lines 273 390) no Hoare annotation was computed. [2020-07-21 22:50:07,015 INFO L268 CegarLoopResult]: For program point L108(lines 108 390) no Hoare annotation was computed. [2020-07-21 22:50:07,015 INFO L268 CegarLoopResult]: For program point L571-1(lines 571 573) no Hoare annotation was computed. [2020-07-21 22:50:07,015 INFO L268 CegarLoopResult]: For program point L538-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,015 INFO L268 CegarLoopResult]: For program point L505-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,015 INFO L268 CegarLoopResult]: For program point L472-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,015 INFO L268 CegarLoopResult]: For program point L439-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,015 INFO L268 CegarLoopResult]: For program point L406-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,015 INFO L268 CegarLoopResult]: For program point L208(lines 208 390) no Hoare annotation was computed. [2020-07-21 22:50:07,016 INFO L268 CegarLoopResult]: For program point L43(lines 43 390) no Hoare annotation was computed. [2020-07-21 22:50:07,016 INFO L268 CegarLoopResult]: For program point L572(line 572) no Hoare annotation was computed. [2020-07-21 22:50:07,016 INFO L268 CegarLoopResult]: For program point L539(line 539) no Hoare annotation was computed. [2020-07-21 22:50:07,016 INFO L268 CegarLoopResult]: For program point L506(line 506) no Hoare annotation was computed. [2020-07-21 22:50:07,016 INFO L268 CegarLoopResult]: For program point L473(line 473) no Hoare annotation was computed. [2020-07-21 22:50:07,016 INFO L268 CegarLoopResult]: For program point L440(line 440) no Hoare annotation was computed. [2020-07-21 22:50:07,016 INFO L268 CegarLoopResult]: For program point L407(line 407) no Hoare annotation was computed. [2020-07-21 22:50:07,016 INFO L268 CegarLoopResult]: For program point L144(lines 144 390) no Hoare annotation was computed. [2020-07-21 22:50:07,016 INFO L268 CegarLoopResult]: For program point L541-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,017 INFO L268 CegarLoopResult]: For program point L508-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,017 INFO L268 CegarLoopResult]: For program point L475-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,017 INFO L268 CegarLoopResult]: For program point L442-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,017 INFO L268 CegarLoopResult]: For program point L409-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,017 INFO L268 CegarLoopResult]: For program point L178(lines 178 390) no Hoare annotation was computed. [2020-07-21 22:50:07,017 INFO L268 CegarLoopResult]: For program point L542(line 542) no Hoare annotation was computed. [2020-07-21 22:50:07,017 INFO L268 CegarLoopResult]: For program point L509(line 509) no Hoare annotation was computed. [2020-07-21 22:50:07,017 INFO L268 CegarLoopResult]: For program point L476(line 476) no Hoare annotation was computed. [2020-07-21 22:50:07,017 INFO L268 CegarLoopResult]: For program point L443(line 443) no Hoare annotation was computed. [2020-07-21 22:50:07,018 INFO L268 CegarLoopResult]: For program point L410(line 410) no Hoare annotation was computed. [2020-07-21 22:50:07,018 INFO L268 CegarLoopResult]: For program point L377(lines 377 390) no Hoare annotation was computed. [2020-07-21 22:50:07,018 INFO L268 CegarLoopResult]: For program point L278(lines 278 390) no Hoare annotation was computed. [2020-07-21 22:50:07,018 INFO L268 CegarLoopResult]: For program point L245(lines 245 390) no Hoare annotation was computed. [2020-07-21 22:50:07,018 INFO L268 CegarLoopResult]: For program point L80(lines 80 390) no Hoare annotation was computed. [2020-07-21 22:50:07,018 INFO L268 CegarLoopResult]: For program point L345(lines 345 390) no Hoare annotation was computed. [2020-07-21 22:50:07,018 INFO L268 CegarLoopResult]: For program point L312(lines 312 390) no Hoare annotation was computed. [2020-07-21 22:50:07,018 INFO L268 CegarLoopResult]: For program point L114(lines 114 390) no Hoare annotation was computed. [2020-07-21 22:50:07,019 INFO L268 CegarLoopResult]: For program point L544-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,019 INFO L268 CegarLoopResult]: For program point L511-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,019 INFO L268 CegarLoopResult]: For program point L478-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,019 INFO L268 CegarLoopResult]: For program point L445-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,019 INFO L268 CegarLoopResult]: For program point L412-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,019 INFO L268 CegarLoopResult]: For program point L214(lines 214 390) no Hoare annotation was computed. [2020-07-21 22:50:07,019 INFO L268 CegarLoopResult]: For program point L148(lines 148 390) no Hoare annotation was computed. [2020-07-21 22:50:07,019 INFO L268 CegarLoopResult]: For program point L49(lines 49 390) no Hoare annotation was computed. [2020-07-21 22:50:07,019 INFO L268 CegarLoopResult]: For program point L545(line 545) no Hoare annotation was computed. [2020-07-21 22:50:07,020 INFO L268 CegarLoopResult]: For program point L512(line 512) no Hoare annotation was computed. [2020-07-21 22:50:07,020 INFO L268 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2020-07-21 22:50:07,020 INFO L268 CegarLoopResult]: For program point L446(line 446) no Hoare annotation was computed. [2020-07-21 22:50:07,020 INFO L268 CegarLoopResult]: For program point L413(line 413) no Hoare annotation was computed. [2020-07-21 22:50:07,020 INFO L268 CegarLoopResult]: For program point L84(lines 84 390) no Hoare annotation was computed. [2020-07-21 22:50:07,020 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,020 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,020 INFO L268 CegarLoopResult]: For program point L547-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,021 INFO L268 CegarLoopResult]: For program point L514-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,021 INFO L268 CegarLoopResult]: For program point L481-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,021 INFO L268 CegarLoopResult]: For program point L448-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,021 INFO L268 CegarLoopResult]: For program point L382(lines 382 390) no Hoare annotation was computed. [2020-07-21 22:50:07,021 INFO L268 CegarLoopResult]: For program point L415-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,021 INFO L268 CegarLoopResult]: For program point L316(lines 316 390) no Hoare annotation was computed. [2020-07-21 22:50:07,021 INFO L268 CegarLoopResult]: For program point L250(lines 250 390) no Hoare annotation was computed. [2020-07-21 22:50:07,021 INFO L268 CegarLoopResult]: For program point L548(line 548) no Hoare annotation was computed. [2020-07-21 22:50:07,021 INFO L268 CegarLoopResult]: For program point L515(line 515) no Hoare annotation was computed. [2020-07-21 22:50:07,022 INFO L268 CegarLoopResult]: For program point L482(line 482) no Hoare annotation was computed. [2020-07-21 22:50:07,022 INFO L268 CegarLoopResult]: For program point L449(line 449) no Hoare annotation was computed. [2020-07-21 22:50:07,022 INFO L268 CegarLoopResult]: For program point L416(line 416) no Hoare annotation was computed. [2020-07-21 22:50:07,022 INFO L268 CegarLoopResult]: For program point L218(lines 218 390) no Hoare annotation was computed. [2020-07-21 22:50:07,022 INFO L268 CegarLoopResult]: For program point L152(lines 152 390) no Hoare annotation was computed. [2020-07-21 22:50:07,022 INFO L268 CegarLoopResult]: For program point L119(lines 119 390) no Hoare annotation was computed. [2020-07-21 22:50:07,022 INFO L268 CegarLoopResult]: For program point L318(lines 318 390) no Hoare annotation was computed. [2020-07-21 22:50:07,022 INFO L268 CegarLoopResult]: For program point L186(lines 186 390) no Hoare annotation was computed. [2020-07-21 22:50:07,022 INFO L268 CegarLoopResult]: For program point L54(lines 54 390) no Hoare annotation was computed. [2020-07-21 22:50:07,022 INFO L268 CegarLoopResult]: For program point L550-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,023 INFO L268 CegarLoopResult]: For program point L517-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,023 INFO L268 CegarLoopResult]: For program point L484-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,023 INFO L268 CegarLoopResult]: For program point L451-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,023 INFO L268 CegarLoopResult]: For program point L418-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,023 INFO L268 CegarLoopResult]: For program point L286(lines 286 390) no Hoare annotation was computed. [2020-07-21 22:50:07,023 INFO L268 CegarLoopResult]: For program point L551(line 551) no Hoare annotation was computed. [2020-07-21 22:50:07,023 INFO L268 CegarLoopResult]: For program point L518(line 518) no Hoare annotation was computed. [2020-07-21 22:50:07,023 INFO L268 CegarLoopResult]: For program point L485(line 485) no Hoare annotation was computed. [2020-07-21 22:50:07,023 INFO L268 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2020-07-21 22:50:07,023 INFO L268 CegarLoopResult]: For program point L419(line 419) no Hoare annotation was computed. [2020-07-21 22:50:07,024 INFO L268 CegarLoopResult]: For program point L353(lines 353 390) no Hoare annotation was computed. [2020-07-21 22:50:07,024 INFO L268 CegarLoopResult]: For program point L189(lines 189 390) no Hoare annotation was computed. [2020-07-21 22:50:07,024 INFO L268 CegarLoopResult]: For program point L553-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,024 INFO L268 CegarLoopResult]: For program point L520-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,024 INFO L268 CegarLoopResult]: For program point L487-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,024 INFO L268 CegarLoopResult]: For program point L454-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,024 INFO L268 CegarLoopResult]: For program point L421-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,024 INFO L268 CegarLoopResult]: For program point L355(lines 355 390) no Hoare annotation was computed. [2020-07-21 22:50:07,025 INFO L268 CegarLoopResult]: For program point L256(lines 256 390) no Hoare annotation was computed. [2020-07-21 22:50:07,025 INFO L268 CegarLoopResult]: For program point L223(lines 223 390) no Hoare annotation was computed. [2020-07-21 22:50:07,025 INFO L268 CegarLoopResult]: For program point L124(lines 124 390) no Hoare annotation was computed. [2020-07-21 22:50:07,025 INFO L268 CegarLoopResult]: For program point L554(line 554) no Hoare annotation was computed. [2020-07-21 22:50:07,025 INFO L268 CegarLoopResult]: For program point L521(line 521) no Hoare annotation was computed. [2020-07-21 22:50:07,025 INFO L268 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2020-07-21 22:50:07,025 INFO L268 CegarLoopResult]: For program point L455(line 455) no Hoare annotation was computed. [2020-07-21 22:50:07,025 INFO L268 CegarLoopResult]: For program point L422(line 422) no Hoare annotation was computed. [2020-07-21 22:50:07,025 INFO L268 CegarLoopResult]: For program point L92(lines 92 390) no Hoare annotation was computed. [2020-07-21 22:50:07,026 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 30 575) the Hoare annotation is: (let ((.cse17 (not (< |old(~a16~0)| 6))) (.cse7 (not (<= |old(~a8~0)| 13))) (.cse24 (= 1 |old(~a17~0)|)) (.cse29 (= 1 |old(~a20~0)|))) (let ((.cse28 (= 8 ~a12~0)) (.cse10 (= 1 |old(~a21~0)|)) (.cse11 (not .cse29)) (.cse8 (not .cse24)) (.cse23 (and (or .cse17 (not (< |old(~a8~0)| 15))) .cse7))) (let ((.cse0 (not (<= 15 |old(~a8~0)|))) (.cse2 (<= 15 ~a8~0)) (.cse20 (< 4 ~a16~0)) (.cse18 (not (< 4 |old(~a16~0)|))) (.cse1 (let ((.cse30 (not (= 1 |old(~a7~0)|)))) (and (or .cse30 .cse17) (or .cse30 .cse23)))) (.cse3 (and (or .cse11 .cse8) (or .cse29 .cse24))) (.cse14 (= 1 ~a7~0)) (.cse5 (= ~a17~0 |old(~a17~0)|)) (.cse6 (<= |old(~a16~0)| ~a16~0)) (.cse15 (= 1 ~a21~0)) (.cse27 (not (<= |old(~a16~0)| 5))) (.cse19 (= ~a7~0 |old(~a7~0)|)) (.cse12 (<= ~a8~0 |old(~a8~0)|)) (.cse13 (<= ~a16~0 |old(~a16~0)|)) (.cse16 (= ~a20~0 |old(~a20~0)|)) (.cse21 (= ~a21~0 |old(~a21~0)|)) (.cse25 (not (<= |old(~a7~0)| 0))) (.cse4 (not .cse10)) (.cse26 (not .cse28)) (.cse9 (not (<= |old(~a16~0)| 4)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or (and .cse5 .cse6) .cse7 .cse8 .cse9 .cse10) (or .cse11 .cse1 (and .cse12 .cse13 .cse14 .cse15 .cse16) .cse4) (or .cse11 .cse17 .cse7 .cse18 .cse8 (and .cse12 .cse19 .cse5 (<= ~a16~0 5) .cse20 .cse16 .cse21)) (or .cse11 (and .cse12 .cse13 .cse19 .cse5 .cse6 .cse16 .cse21) (let ((.cse22 (and (or .cse8 .cse4) (or .cse24 .cse10)))) (and (or .cse22 .cse23 (not (<= 6 |old(~a16~0)|))) (or .cse22 .cse7 .cse9)))) (or .cse0 .cse25 .cse4 (and .cse13 .cse12 .cse19 .cse5 .cse6 .cse2 .cse15 .cse16) .cse26) (or .cse1 (and .cse12 .cse13 .cse14 .cse15 .cse20 .cse16) .cse27 .cse18 .cse4) (or .cse1 (not (<= 14 |old(~a8~0)|)) .cse3 (and .cse12 .cse13 .cse14 .cse5 .cse6 (<= 14 ~a8~0) .cse15 .cse16) .cse4) (or .cse27 (and .cse19 (or (and .cse12 .cse13 (= 1 ~a17~0)) (and .cse12 .cse13 (<= ~a7~0 0) .cse28)) .cse16 .cse21) (and (or .cse25 .cse4 .cse26) (or .cse7 .cse8 .cse9))))))) [2020-07-21 22:50:07,026 INFO L268 CegarLoopResult]: For program point L324(lines 324 390) no Hoare annotation was computed. [2020-07-21 22:50:07,026 INFO L268 CegarLoopResult]: For program point L556-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,026 INFO L268 CegarLoopResult]: For program point L523-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,026 INFO L268 CegarLoopResult]: For program point L490-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,026 INFO L268 CegarLoopResult]: For program point L457-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,027 INFO L268 CegarLoopResult]: For program point L391(lines 391 393) no Hoare annotation was computed. [2020-07-21 22:50:07,027 INFO L268 CegarLoopResult]: For program point L424-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,027 INFO L268 CegarLoopResult]: For program point L391-2(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,027 INFO L268 CegarLoopResult]: For program point L292(lines 292 390) no Hoare annotation was computed. [2020-07-21 22:50:07,027 INFO L268 CegarLoopResult]: For program point L160(lines 160 390) no Hoare annotation was computed. [2020-07-21 22:50:07,027 INFO L268 CegarLoopResult]: For program point L557(line 557) no Hoare annotation was computed. [2020-07-21 22:50:07,027 INFO L268 CegarLoopResult]: For program point L524(line 524) no Hoare annotation was computed. [2020-07-21 22:50:07,027 INFO L268 CegarLoopResult]: For program point L491(line 491) no Hoare annotation was computed. [2020-07-21 22:50:07,027 INFO L268 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2020-07-21 22:50:07,027 INFO L268 CegarLoopResult]: For program point L425(line 425) no Hoare annotation was computed. [2020-07-21 22:50:07,027 INFO L268 CegarLoopResult]: For program point L392(line 392) no Hoare annotation was computed. [2020-07-21 22:50:07,028 INFO L268 CegarLoopResult]: For program point L194(lines 194 390) no Hoare annotation was computed. [2020-07-21 22:50:07,028 INFO L268 CegarLoopResult]: For program point L62(lines 62 390) no Hoare annotation was computed. [2020-07-21 22:50:07,028 INFO L268 CegarLoopResult]: For program point L261(lines 261 390) no Hoare annotation was computed. [2020-07-21 22:50:07,028 INFO L268 CegarLoopResult]: For program point L129(lines 129 390) no Hoare annotation was computed. [2020-07-21 22:50:07,028 INFO L268 CegarLoopResult]: For program point L559-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,028 INFO L268 CegarLoopResult]: For program point L526-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,028 INFO L268 CegarLoopResult]: For program point L493-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,028 INFO L268 CegarLoopResult]: For program point L460-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,028 INFO L268 CegarLoopResult]: For program point L427-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,028 INFO L268 CegarLoopResult]: For program point L361(lines 361 390) no Hoare annotation was computed. [2020-07-21 22:50:07,028 INFO L268 CegarLoopResult]: For program point L394-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,028 INFO L268 CegarLoopResult]: For program point L97(lines 97 390) no Hoare annotation was computed. [2020-07-21 22:50:07,028 INFO L268 CegarLoopResult]: For program point L31(lines 31 390) no Hoare annotation was computed. [2020-07-21 22:50:07,028 INFO L268 CegarLoopResult]: For program point L560(line 560) no Hoare annotation was computed. [2020-07-21 22:50:07,028 INFO L268 CegarLoopResult]: For program point L527(line 527) no Hoare annotation was computed. [2020-07-21 22:50:07,028 INFO L268 CegarLoopResult]: For program point L494(line 494) no Hoare annotation was computed. [2020-07-21 22:50:07,029 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-21 22:50:07,029 INFO L268 CegarLoopResult]: For program point L428(line 428) no Hoare annotation was computed. [2020-07-21 22:50:07,029 INFO L268 CegarLoopResult]: For program point L395(line 395) no Hoare annotation was computed. [2020-07-21 22:50:07,029 INFO L268 CegarLoopResult]: For program point L329(lines 329 390) no Hoare annotation was computed. [2020-07-21 22:50:07,029 INFO L268 CegarLoopResult]: For program point L197(lines 197 390) no Hoare annotation was computed. [2020-07-21 22:50:07,029 INFO L268 CegarLoopResult]: For program point L65(lines 65 390) no Hoare annotation was computed. [2020-07-21 22:50:07,029 INFO L268 CegarLoopResult]: For program point L363(lines 363 390) no Hoare annotation was computed. [2020-07-21 22:50:07,029 INFO L268 CegarLoopResult]: For program point L231(lines 231 390) no Hoare annotation was computed. [2020-07-21 22:50:07,029 INFO L268 CegarLoopResult]: For program point L165(lines 165 390) no Hoare annotation was computed. [2020-07-21 22:50:07,029 INFO L268 CegarLoopResult]: For program point L562-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,029 INFO L268 CegarLoopResult]: For program point L529-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,029 INFO L268 CegarLoopResult]: For program point L496-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,029 INFO L268 CegarLoopResult]: For program point L463-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,029 INFO L268 CegarLoopResult]: For program point L430-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,029 INFO L268 CegarLoopResult]: For program point L397-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:07,030 INFO L268 CegarLoopResult]: For program point L265(lines 265 390) no Hoare annotation was computed. [2020-07-21 22:50:07,030 INFO L268 CegarLoopResult]: For program point L563(line 563) no Hoare annotation was computed. [2020-07-21 22:50:07,030 INFO L268 CegarLoopResult]: For program point L530(line 530) no Hoare annotation was computed. [2020-07-21 22:50:07,030 INFO L268 CegarLoopResult]: For program point L497(line 497) no Hoare annotation was computed. [2020-07-21 22:50:07,030 INFO L268 CegarLoopResult]: For program point L464(line 464) no Hoare annotation was computed. [2020-07-21 22:50:07,030 INFO L268 CegarLoopResult]: For program point L431(line 431) no Hoare annotation was computed. [2020-07-21 22:50:07,030 INFO L268 CegarLoopResult]: For program point L398(line 398) no Hoare annotation was computed. [2020-07-21 22:50:07,030 INFO L268 CegarLoopResult]: For program point L365(lines 365 390) no Hoare annotation was computed. [2020-07-21 22:50:07,030 INFO L268 CegarLoopResult]: For program point L299(lines 299 390) no Hoare annotation was computed. [2020-07-21 22:50:07,030 INFO L268 CegarLoopResult]: For program point L35(lines 35 390) no Hoare annotation was computed. [2020-07-21 22:50:07,030 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 22:50:07,030 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a7~0 0) (= 1 ~a17~0) (= 1 ~a21~0) (= 1 ~a20~0) (= 15 ~a8~0) (= 5 ~a16~0) (= 8 ~a12~0)) [2020-07-21 22:50:07,030 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 22:50:07,030 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 22:50:07,031 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 577 594) the Hoare annotation is: (or (and (<= ~a8~0 |old(~a8~0)|) (= ~a7~0 |old(~a7~0)|) (= ~a17~0 |old(~a17~0)|) (<= 15 ~a8~0) (= 1 ~a21~0) (= ~a20~0 |old(~a20~0)|) (= 5 ~a16~0)) (not (= 1 |old(~a20~0)|)) (not (= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (not (< 4 |old(~a16~0)|)) (not (< |old(~a16~0)| 6)) (not (= 1 |old(~a17~0)|)) (not (= 1 |old(~a21~0)|)) (not (= 8 ~a12~0))) [2020-07-21 22:50:07,031 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 577 594) no Hoare annotation was computed. [2020-07-21 22:50:07,031 INFO L264 CegarLoopResult]: At program point L591(line 591) the Hoare annotation is: (let ((.cse0 (<= ~a8~0 13)) (.cse1 (= 1 ~a17~0))) (let ((.cse2 (<= ~a16~0 4)) (.cse4 (not .cse1)) (.cse3 (let ((.cse10 (= 1 ~a7~0))) (or (and (< ~a16~0 6) .cse10) (and .cse0 .cse10)))) (.cse9 (<= ~a7~0 0)) (.cse5 (= 1 ~a21~0)) (.cse6 (<= ~a16~0 5)) (.cse8 (= 1 ~a20~0))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 (<= 14 ~a8~0) .cse5) (not (= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (and .cse3 .cse6 .cse5 (< 4 ~a16~0)) (not (< 4 |old(~a16~0)|)) (not (= 1 |old(~a17~0)|)) (not (= 1 |old(~a20~0)|)) (and (let ((.cse7 (or (and .cse4 (not .cse5)) (and .cse1 .cse5)))) (or (and .cse7 .cse0 (<= 6 ~a16~0)) (and .cse7 .cse0 .cse2))) .cse8) (and .cse3 .cse5 .cse8) (and .cse9 (<= 15 ~a8~0) .cse5) (not (< |old(~a16~0)| 6)) (and .cse9 .cse6 .cse5) (and .cse0 .cse1 .cse6 .cse8) (not (= 1 |old(~a21~0)|)) (not (= 8 ~a12~0))))) [2020-07-21 22:50:07,031 INFO L268 CegarLoopResult]: For program point L591-1(line 591) no Hoare annotation was computed. [2020-07-21 22:50:07,031 INFO L268 CegarLoopResult]: For program point L588(line 588) no Hoare annotation was computed. [2020-07-21 22:50:07,031 INFO L264 CegarLoopResult]: At program point L583-2(lines 583 593) the Hoare annotation is: (let ((.cse0 (<= ~a8~0 13)) (.cse1 (= 1 ~a17~0))) (let ((.cse2 (<= ~a16~0 4)) (.cse4 (not .cse1)) (.cse3 (let ((.cse10 (= 1 ~a7~0))) (or (and (< ~a16~0 6) .cse10) (and .cse0 .cse10)))) (.cse9 (<= ~a7~0 0)) (.cse5 (= 1 ~a21~0)) (.cse6 (<= ~a16~0 5)) (.cse8 (= 1 ~a20~0))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 (<= 14 ~a8~0) .cse5) (not (= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (and .cse3 .cse6 .cse5 (< 4 ~a16~0)) (not (< 4 |old(~a16~0)|)) (not (= 1 |old(~a17~0)|)) (not (= 1 |old(~a20~0)|)) (and (let ((.cse7 (or (and .cse4 (not .cse5)) (and .cse1 .cse5)))) (or (and .cse7 .cse0 (<= 6 ~a16~0)) (and .cse7 .cse0 .cse2))) .cse8) (and .cse3 .cse5 .cse8) (and .cse9 (<= 15 ~a8~0) .cse5) (not (< |old(~a16~0)| 6)) (and .cse9 .cse6 .cse5) (and .cse0 .cse1 .cse6 .cse8) (not (= 1 |old(~a21~0)|)) (not (= 8 ~a12~0))))) [2020-07-21 22:50:07,031 INFO L268 CegarLoopResult]: For program point L583-3(lines 577 594) no Hoare annotation was computed. [2020-07-21 22:50:07,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:50:07 BoogieIcfgContainer [2020-07-21 22:50:07,054 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 22:50:07,056 INFO L168 Benchmark]: Toolchain (without parser) took 48282.78 ms. Allocated memory was 139.5 MB in the beginning and 724.0 MB in the end (delta: 584.6 MB). Free memory was 102.5 MB in the beginning and 409.9 MB in the end (delta: -307.4 MB). Peak memory consumption was 602.4 MB. Max. memory is 7.1 GB. [2020-07-21 22:50:07,056 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 22:50:07,057 INFO L168 Benchmark]: CACSL2BoogieTranslator took 711.40 ms. Allocated memory was 139.5 MB in the beginning and 207.1 MB in the end (delta: 67.6 MB). Free memory was 102.1 MB in the beginning and 173.2 MB in the end (delta: -71.1 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. [2020-07-21 22:50:07,058 INFO L168 Benchmark]: Boogie Preprocessor took 115.61 ms. Allocated memory is still 207.1 MB. Free memory was 173.2 MB in the beginning and 168.3 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2020-07-21 22:50:07,058 INFO L168 Benchmark]: RCFGBuilder took 1349.84 ms. Allocated memory was 207.1 MB in the beginning and 241.2 MB in the end (delta: 34.1 MB). Free memory was 168.3 MB in the beginning and 182.1 MB in the end (delta: -13.9 MB). Peak memory consumption was 81.2 MB. Max. memory is 7.1 GB. [2020-07-21 22:50:07,059 INFO L168 Benchmark]: TraceAbstraction took 46099.38 ms. Allocated memory was 241.2 MB in the beginning and 724.0 MB in the end (delta: 482.9 MB). Free memory was 182.1 MB in the beginning and 409.9 MB in the end (delta: -227.8 MB). Peak memory consumption was 580.2 MB. Max. memory is 7.1 GB. [2020-07-21 22:50:07,062 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 711.40 ms. Allocated memory was 139.5 MB in the beginning and 207.1 MB in the end (delta: 67.6 MB). Free memory was 102.1 MB in the beginning and 173.2 MB in the end (delta: -71.1 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.61 ms. Allocated memory is still 207.1 MB. Free memory was 173.2 MB in the beginning and 168.3 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1349.84 ms. Allocated memory was 207.1 MB in the beginning and 241.2 MB in the end (delta: 34.1 MB). Free memory was 168.3 MB in the beginning and 182.1 MB in the end (delta: -13.9 MB). Peak memory consumption was 81.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 46099.38 ms. Allocated memory was 241.2 MB in the beginning and 724.0 MB in the end (delta: 482.9 MB). Free memory was 182.1 MB in the beginning and 409.9 MB in the end (delta: -227.8 MB). Peak memory consumption was 580.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 515]: 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: 583]: Loop Invariant Derived loop invariant: ((((((((((((((((a8 <= 13 && 1 == a17) && a16 <= 4) || (((((a16 < 6 && 1 == a7) || (a8 <= 13 && 1 == a7)) && !(1 == a17)) && 14 <= a8) && 1 == a21)) || !(15 == \old(a8))) || !(\old(a7) <= 0)) || (((((a16 < 6 && 1 == a7) || (a8 <= 13 && 1 == a7)) && a16 <= 5) && 1 == a21) && 4 < a16)) || !(4 < \old(a16))) || !(1 == \old(a17))) || !(1 == \old(a20))) || ((((((!(1 == a17) && !(1 == a21)) || (1 == a17 && 1 == a21)) && a8 <= 13) && 6 <= a16) || ((((!(1 == a17) && !(1 == a21)) || (1 == a17 && 1 == a21)) && a8 <= 13) && a16 <= 4)) && 1 == a20)) || ((((a16 < 6 && 1 == a7) || (a8 <= 13 && 1 == a7)) && 1 == a21) && 1 == a20)) || ((a7 <= 0 && 15 <= a8) && 1 == a21)) || !(\old(a16) < 6)) || ((a7 <= 0 && a16 <= 5) && 1 == a21)) || (((a8 <= 13 && 1 == a17) && a16 <= 5) && 1 == a20)) || !(1 == \old(a21))) || !(8 == a12) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 39.1s, OverallIterations: 16, TraceHistogramMax: 7, AutomataDifference: 23.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 6.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 614 SDtfs, 8083 SDslu, 901 SDs, 0 SdLazy, 16747 SolverSat, 1902 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6213 GetRequests, 6022 SyntacticMatches, 12 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 6.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3451occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 16 MinimizatonAttempts, 4537 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 214 PreInvPairs, 260 NumberOfFragments, 1022 HoareAnnotationTreeSize, 214 FomulaSimplifications, 29394 FormulaSimplificationTreeSizeReduction, 1.2s HoareSimplificationTime, 7 FomulaSimplificationsInter, 48201 FormulaSimplificationTreeSizeReductionInter, 5.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 8.2s InterpolantComputationTime, 3509 NumberOfCodeBlocks, 2306 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 6071 ConstructedInterpolants, 0 QuantifiedInterpolants, 5603550 SizeOfPredicates, 67 NumberOfNonLiveVariables, 7659 ConjunctsInSsa, 242 ConjunctsInUnsatCore, 28 InterpolantComputations, 4 PerfectInterpolantSequences, 5513/5710 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...