/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 23:00:08,960 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-21 23:00:08,995 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 23:00:08,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 23:00:08,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 23:00:09,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 23:00:09,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 23:00:09,002 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 23:00:09,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 23:00:09,009 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 23:00:09,012 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 23:00:09,013 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 23:00:09,014 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 23:00:09,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 23:00:09,019 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 23:00:09,036 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 23:00:09,070 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 23:00:09,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 23:00:09,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 23:00:09,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 23:00:09,075 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 23:00:09,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 23:00:09,075 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 23:00:09,075 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 23:00:09,076 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 23:00:09,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 23:00:09,076 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 23:00:09,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 23:00:09,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 23:00:09,077 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 23:00:09,077 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 23:00:09,077 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 23:00:09,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 23:00:09,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 23:00:09,077 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 23:00:09,078 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 23:00:09,078 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 23:00:09,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 23:00:09,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 23:00:09,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 23:00:09,079 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 23:00:09,079 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 23:00:09,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:00:09,079 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 23:00:09,083 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 23:00:09,083 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 23:00:09,349 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 23:00:09,368 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 23:00:09,371 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 23:00:09,375 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 23:00:09,376 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 23:00:09,376 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label40.c [2020-07-21 23:00:09,434 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e6eabc42/ef7c9a379bbf42a88392d3aacff573d4/FLAG2472dd94c [2020-07-21 23:00:09,987 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 23:00:09,987 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label40.c [2020-07-21 23:00:09,998 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e6eabc42/ef7c9a379bbf42a88392d3aacff573d4/FLAG2472dd94c [2020-07-21 23:00:10,264 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e6eabc42/ef7c9a379bbf42a88392d3aacff573d4 [2020-07-21 23:00:10,271 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 23:00:10,275 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 23:00:10,276 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 23:00:10,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 23:00:10,279 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 23:00:10,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:00:10" (1/1) ... [2020-07-21 23:00:10,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5914c42e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:10, skipping insertion in model container [2020-07-21 23:00:10,283 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:00:10" (1/1) ... [2020-07-21 23:00:10,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 23:00:10,331 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 23:00:10,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 23:00:10,825 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 23:00:10,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 23:00:10,968 INFO L208 MainTranslator]: Completed translation [2020-07-21 23:00:10,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:10 WrapperNode [2020-07-21 23:00:10,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 23:00:10,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 23:00:10,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 23:00:10,970 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 23:00:10,983 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:10" (1/1) ... [2020-07-21 23:00:10,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:10" (1/1) ... [2020-07-21 23:00:11,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:10" (1/1) ... [2020-07-21 23:00:11,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:10" (1/1) ... [2020-07-21 23:00:11,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:10" (1/1) ... [2020-07-21 23:00:11,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:10" (1/1) ... [2020-07-21 23:00:11,096 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:10" (1/1) ... [2020-07-21 23:00:11,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 23:00:11,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 23:00:11,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 23:00:11,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 23:00:11,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 23:00:11,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 23:00:11,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 23:00:11,178 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 23:00:11,178 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 23:00:11,178 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 23:00:11,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 23:00:11,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 23:00:11,179 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 23:00:11,179 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 23:00:11,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 23:00:11,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 23:00:12,369 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 23:00:12,369 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 23:00:12,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:00:12 BoogieIcfgContainer [2020-07-21 23:00:12,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 23:00:12,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 23:00:12,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 23:00:12,380 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 23:00:12,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:00:10" (1/3) ... [2020-07-21 23:00:12,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d50a74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:00:12, skipping insertion in model container [2020-07-21 23:00:12,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:10" (2/3) ... [2020-07-21 23:00:12,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d50a74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:00:12, skipping insertion in model container [2020-07-21 23:00:12,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:00:12" (3/3) ... [2020-07-21 23:00:12,383 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label40.c [2020-07-21 23:00:12,394 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 23:00:12,402 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 23:00:12,417 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 23:00:12,442 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 23:00:12,442 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 23:00:12,443 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 23:00:12,443 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 23:00:12,443 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 23:00:12,443 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 23:00:12,443 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 23:00:12,444 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 23:00:12,468 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-07-21 23:00:12,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-21 23:00:12,477 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:00:12,479 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] [2020-07-21 23:00:12,479 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:00:12,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:00:12,487 INFO L82 PathProgramCache]: Analyzing trace with hash -576444522, now seen corresponding path program 1 times [2020-07-21 23:00:12,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:00:12,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63871527] [2020-07-21 23:00:12,500 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:00:12,647 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:00:12,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:00:12,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 23:00:12,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:00:12,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:00:12,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:00:12,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63871527] [2020-07-21 23:00:12,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:00:12,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:00:12,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268227655] [2020-07-21 23:00:12,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:00:12,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:00:12,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:00:12,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:00:12,751 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2020-07-21 23:00:13,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:00:13,685 INFO L93 Difference]: Finished difference Result 571 states and 989 transitions. [2020-07-21 23:00:13,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:00:13,687 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-07-21 23:00:13,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:00:13,703 INFO L225 Difference]: With dead ends: 571 [2020-07-21 23:00:13,704 INFO L226 Difference]: Without dead ends: 294 [2020-07-21 23:00:13,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:00:13,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-07-21 23:00:13,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2020-07-21 23:00:13,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-07-21 23:00:13,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 446 transitions. [2020-07-21 23:00:13,780 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 446 transitions. Word has length 55 [2020-07-21 23:00:13,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:00:13,781 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 446 transitions. [2020-07-21 23:00:13,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:00:13,781 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 446 transitions. [2020-07-21 23:00:13,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-07-21 23:00:13,787 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:00:13,788 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 23:00:14,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:00:14,003 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:00:14,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:00:14,004 INFO L82 PathProgramCache]: Analyzing trace with hash -913027315, now seen corresponding path program 1 times [2020-07-21 23:00:14,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:00:14,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640940391] [2020-07-21 23:00:14,005 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:00:14,104 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:00:14,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:00:14,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 23:00:14,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:00:14,183 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:00:14,183 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:00:14,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640940391] [2020-07-21 23:00:14,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:00:14,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 23:00:14,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856564556] [2020-07-21 23:00:14,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 23:00:14,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:00:14,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 23:00:14,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 23:00:14,187 INFO L87 Difference]: Start difference. First operand 294 states and 446 transitions. Second operand 5 states. [2020-07-21 23:00:15,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:00:15,222 INFO L93 Difference]: Finished difference Result 737 states and 1125 transitions. [2020-07-21 23:00:15,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 23:00:15,223 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-07-21 23:00:15,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:00:15,228 INFO L225 Difference]: With dead ends: 737 [2020-07-21 23:00:15,228 INFO L226 Difference]: Without dead ends: 449 [2020-07-21 23:00:15,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-21 23:00:15,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2020-07-21 23:00:15,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 443. [2020-07-21 23:00:15,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-07-21 23:00:15,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 634 transitions. [2020-07-21 23:00:15,264 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 634 transitions. Word has length 128 [2020-07-21 23:00:15,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:00:15,265 INFO L479 AbstractCegarLoop]: Abstraction has 443 states and 634 transitions. [2020-07-21 23:00:15,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 23:00:15,266 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 634 transitions. [2020-07-21 23:00:15,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-07-21 23:00:15,269 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:00:15,269 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 23:00:15,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:00:15,485 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:00:15,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:00:15,487 INFO L82 PathProgramCache]: Analyzing trace with hash 952189433, now seen corresponding path program 1 times [2020-07-21 23:00:15,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:00:15,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055370780] [2020-07-21 23:00:15,489 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:00:15,600 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:00:15,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:00:15,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 23:00:15,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:00:15,640 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:00:15,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:00:15,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055370780] [2020-07-21 23:00:15,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:00:15,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:00:15,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566484856] [2020-07-21 23:00:15,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:00:15,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:00:15,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:00:15,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:00:15,643 INFO L87 Difference]: Start difference. First operand 443 states and 634 transitions. Second operand 3 states. [2020-07-21 23:00:16,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:00:16,376 INFO L93 Difference]: Finished difference Result 1172 states and 1736 transitions. [2020-07-21 23:00:16,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:00:16,377 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2020-07-21 23:00:16,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:00:16,383 INFO L225 Difference]: With dead ends: 1172 [2020-07-21 23:00:16,384 INFO L226 Difference]: Without dead ends: 878 [2020-07-21 23:00:16,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:00:16,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2020-07-21 23:00:16,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2020-07-21 23:00:16,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 878 states. [2020-07-21 23:00:16,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1251 transitions. [2020-07-21 23:00:16,451 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1251 transitions. Word has length 134 [2020-07-21 23:00:16,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:00:16,452 INFO L479 AbstractCegarLoop]: Abstraction has 878 states and 1251 transitions. [2020-07-21 23:00:16,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:00:16,452 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1251 transitions. [2020-07-21 23:00:16,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-07-21 23:00:16,458 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:00:16,459 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 23:00:16,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:00:16,673 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:00:16,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:00:16,674 INFO L82 PathProgramCache]: Analyzing trace with hash -296475546, now seen corresponding path program 1 times [2020-07-21 23:00:16,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:00:16,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059117023] [2020-07-21 23:00:16,675 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:00:16,779 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:00:16,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:00:16,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 23:00:16,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:00:16,853 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:00:16,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:00:16,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059117023] [2020-07-21 23:00:16,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:00:16,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 23:00:16,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686216324] [2020-07-21 23:00:16,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 23:00:16,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:00:16,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 23:00:16,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 23:00:16,856 INFO L87 Difference]: Start difference. First operand 878 states and 1251 transitions. Second operand 5 states. [2020-07-21 23:00:17,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:00:17,929 INFO L93 Difference]: Finished difference Result 1492 states and 2221 transitions. [2020-07-21 23:00:17,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 23:00:17,930 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-07-21 23:00:17,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:00:17,944 INFO L225 Difference]: With dead ends: 1492 [2020-07-21 23:00:17,944 INFO L226 Difference]: Without dead ends: 763 [2020-07-21 23:00:17,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-21 23:00:17,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2020-07-21 23:00:17,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 592. [2020-07-21 23:00:17,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2020-07-21 23:00:17,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 718 transitions. [2020-07-21 23:00:17,993 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 718 transitions. Word has length 167 [2020-07-21 23:00:17,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:00:17,994 INFO L479 AbstractCegarLoop]: Abstraction has 592 states and 718 transitions. [2020-07-21 23:00:17,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 23:00:17,994 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 718 transitions. [2020-07-21 23:00:17,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-07-21 23:00:17,999 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:00:18,000 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:00:18,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:00:18,215 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:00:18,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:00:18,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1123243390, now seen corresponding path program 1 times [2020-07-21 23:00:18,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:00:18,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333484733] [2020-07-21 23:00:18,218 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:00:18,383 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:00:18,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:00:18,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 20 conjunts are in the unsatisfiable core [2020-07-21 23:00:18,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:00:18,592 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-07-21 23:00:18,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:00:18,650 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:00:18,661 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:00:18,786 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-07-21 23:00:18,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333484733] [2020-07-21 23:00:18,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-21 23:00:18,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2020-07-21 23:00:18,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305312592] [2020-07-21 23:00:18,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:00:18,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:00:18,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:00:18,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-07-21 23:00:18,789 INFO L87 Difference]: Start difference. First operand 592 states and 718 transitions. Second operand 3 states. [2020-07-21 23:00:19,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:00:19,564 INFO L93 Difference]: Finished difference Result 1474 states and 1852 transitions. [2020-07-21 23:00:19,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:00:19,566 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 237 [2020-07-21 23:00:19,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:00:19,573 INFO L225 Difference]: With dead ends: 1474 [2020-07-21 23:00:19,573 INFO L226 Difference]: Without dead ends: 1031 [2020-07-21 23:00:19,576 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 464 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-07-21 23:00:19,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2020-07-21 23:00:19,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 886. [2020-07-21 23:00:19,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 886 states. [2020-07-21 23:00:19,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1101 transitions. [2020-07-21 23:00:19,616 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1101 transitions. Word has length 237 [2020-07-21 23:00:19,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:00:19,617 INFO L479 AbstractCegarLoop]: Abstraction has 886 states and 1101 transitions. [2020-07-21 23:00:19,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:00:19,621 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1101 transitions. [2020-07-21 23:00:19,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-07-21 23:00:19,628 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:00:19,629 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:00:19,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:00:19,842 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:00:19,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:00:19,842 INFO L82 PathProgramCache]: Analyzing trace with hash -385944642, now seen corresponding path program 1 times [2020-07-21 23:00:19,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:00:19,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955441664] [2020-07-21 23:00:19,843 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:00:19,993 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:00:19,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:00:19,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 23:00:19,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:00:20,079 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-07-21 23:00:20,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:00:20,297 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-07-21 23:00:20,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955441664] [2020-07-21 23:00:20,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-21 23:00:20,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2020-07-21 23:00:20,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155582123] [2020-07-21 23:00:20,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 23:00:20,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:00:20,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 23:00:20,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 23:00:20,300 INFO L87 Difference]: Start difference. First operand 886 states and 1101 transitions. Second operand 5 states. [2020-07-21 23:00:21,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:00:21,226 INFO L93 Difference]: Finished difference Result 2070 states and 2674 transitions. [2020-07-21 23:00:21,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 23:00:21,236 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 251 [2020-07-21 23:00:21,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:00:21,244 INFO L225 Difference]: With dead ends: 2070 [2020-07-21 23:00:21,245 INFO L226 Difference]: Without dead ends: 1333 [2020-07-21 23:00:21,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 492 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-21 23:00:21,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2020-07-21 23:00:21,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 1186. [2020-07-21 23:00:21,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1186 states. [2020-07-21 23:00:21,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1489 transitions. [2020-07-21 23:00:21,300 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1489 transitions. Word has length 251 [2020-07-21 23:00:21,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:00:21,300 INFO L479 AbstractCegarLoop]: Abstraction has 1186 states and 1489 transitions. [2020-07-21 23:00:21,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 23:00:21,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1489 transitions. [2020-07-21 23:00:21,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-07-21 23:00:21,308 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:00:21,308 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:00:21,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:00:21,522 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:00:21,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:00:21,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1746099686, now seen corresponding path program 1 times [2020-07-21 23:00:21,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:00:21,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829642550] [2020-07-21 23:00:21,523 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:00:21,646 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 23:00:21,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:00:21,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 23:00:21,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:00:21,801 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 335 proven. 2 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-07-21 23:00:21,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:00:21,964 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 216 proven. 102 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-07-21 23:00:21,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829642550] [2020-07-21 23:00:21,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 23:00:21,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 23:00:21,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447629466] [2020-07-21 23:00:21,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 23:00:21,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:00:21,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 23:00:21,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-21 23:00:21,967 INFO L87 Difference]: Start difference. First operand 1186 states and 1489 transitions. Second operand 7 states. [2020-07-21 23:00:23,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:00:23,663 INFO L93 Difference]: Finished difference Result 3097 states and 4047 transitions. [2020-07-21 23:00:23,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 23:00:23,663 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 353 [2020-07-21 23:00:23,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:00:23,674 INFO L225 Difference]: With dead ends: 3097 [2020-07-21 23:00:23,675 INFO L226 Difference]: Without dead ends: 2060 [2020-07-21 23:00:23,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 709 GetRequests, 701 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-07-21 23:00:23,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2060 states. [2020-07-21 23:00:23,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2060 to 2054. [2020-07-21 23:00:23,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2054 states. [2020-07-21 23:00:23,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 2563 transitions. [2020-07-21 23:00:23,739 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 2563 transitions. Word has length 353 [2020-07-21 23:00:23,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:00:23,740 INFO L479 AbstractCegarLoop]: Abstraction has 2054 states and 2563 transitions. [2020-07-21 23:00:23,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 23:00:23,740 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 2563 transitions. [2020-07-21 23:00:23,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-07-21 23:00:23,751 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:00:23,751 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:00:23,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:00:23,967 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:00:23,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:00:23,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1482445087, now seen corresponding path program 1 times [2020-07-21 23:00:23,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:00:23,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1987667049] [2020-07-21 23:00:23,968 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 23:00:24,076 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 23:00:24,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:00:24,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 25 conjunts are in the unsatisfiable core [2020-07-21 23:00:24,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:00:24,141 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 23:00:24,143 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 23:00:39,143 WARN L193 SmtUtils]: Spent 14.97 s on a formula simplification that was a NOOP. DAG size: 39 [2020-07-21 23:00:39,188 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 23:00:39,318 INFO L501 QuantifierPusher]: Distributing 5 conjuncts over 2 disjuncts [2020-07-21 23:00:39,693 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 297 proven. 58 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-07-21 23:00:39,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:00:39,777 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 2 conjuncts [2020-07-21 23:00:39,998 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:00:40,001 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:00:40,008 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 23:00:40,009 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 23:00:40,011 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:00:40,016 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:00:40,020 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:00:40,021 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:00:44,160 WARN L193 SmtUtils]: Spent 4.06 s on a formula simplification. DAG size of input: 37 DAG size of output: 20 [2020-07-21 23:00:44,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1987667049] [2020-07-21 23:00:44,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 23:00:44,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-07-21 23:00:44,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127754573] [2020-07-21 23:00:44,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 23:00:44,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:00:44,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 23:00:44,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-07-21 23:00:44,164 INFO L87 Difference]: Start difference. First operand 2054 states and 2563 transitions. Second operand 8 states. [2020-07-21 23:00:44,746 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 36 [2020-07-21 23:00:47,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:00:47,668 INFO L93 Difference]: Finished difference Result 4076 states and 5241 transitions. [2020-07-21 23:00:47,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-21 23:00:47,669 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 362 [2020-07-21 23:00:47,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:00:47,680 INFO L225 Difference]: With dead ends: 4076 [2020-07-21 23:00:47,681 INFO L226 Difference]: Without dead ends: 2266 [2020-07-21 23:00:47,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 629 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 19.7s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2020-07-21 23:00:47,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2266 states. [2020-07-21 23:00:47,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2266 to 2227. [2020-07-21 23:00:47,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2227 states. [2020-07-21 23:00:47,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2227 states to 2227 states and 2750 transitions. [2020-07-21 23:00:47,742 INFO L78 Accepts]: Start accepts. Automaton has 2227 states and 2750 transitions. Word has length 362 [2020-07-21 23:00:47,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:00:47,742 INFO L479 AbstractCegarLoop]: Abstraction has 2227 states and 2750 transitions. [2020-07-21 23:00:47,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 23:00:47,743 INFO L276 IsEmpty]: Start isEmpty. Operand 2227 states and 2750 transitions. [2020-07-21 23:00:47,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2020-07-21 23:00:47,755 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:00:47,755 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:00:47,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:00:47,969 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:00:47,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:00:47,970 INFO L82 PathProgramCache]: Analyzing trace with hash 147784809, now seen corresponding path program 1 times [2020-07-21 23:00:47,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:00:47,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007363073] [2020-07-21 23:00:47,971 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 23:00:48,127 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:00:48,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:00:48,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 19 conjunts are in the unsatisfiable core [2020-07-21 23:00:48,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:00:48,170 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 23:00:48,171 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 23:00:48,172 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 23:00:48,174 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 23:00:48,175 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 23:00:48,176 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 23:00:48,178 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 23:00:48,179 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 23:01:15,437 WARN L193 SmtUtils]: Spent 27.18 s on a formula simplification. DAG size of input: 48 DAG size of output: 33 [2020-07-21 23:01:15,485 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 23:01:15,562 INFO L501 QuantifierPusher]: Distributing 6 conjuncts over 2 disjuncts [2020-07-21 23:01:15,957 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 316 proven. 20 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2020-07-21 23:01:15,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:01:16,065 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 23:01:16,242 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 23:01:16,244 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:01:16,245 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:01:16,245 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:01:16,247 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:01:16,248 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:01:16,249 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:01:16,250 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:01:16,252 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 23:01:16,253 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:01:16,253 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:01:16,254 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:01:16,255 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:01:16,257 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:01:16,258 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:01:16,259 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:01:16,260 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:01:16,261 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:01:16,262 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:01:16,263 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:01:16,264 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:01:16,266 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:01:16,266 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:01:16,267 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:01:16,268 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:01:16,269 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:01:16,271 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:01:16,272 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:01:16,272 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:01:16,273 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 23:01:16,274 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 23:01:16,278 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 23:01:16,280 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:01:16,281 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:01:16,282 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:01:16,282 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 23:01:16,284 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 23:01:16,285 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 23:01:16,287 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:01:16,288 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:01:16,288 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 23:01:16,290 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 23:01:16,291 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 23:01:16,293 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:01:16,294 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:01:16,295 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:01:16,296 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:01:16,297 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 23:01:16,298 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:01:16,299 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:01:16,300 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:01:29,959 WARN L193 SmtUtils]: Spent 13.47 s on a formula simplification. DAG size of input: 109 DAG size of output: 23 [2020-07-21 23:01:29,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007363073] [2020-07-21 23:01:29,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 23:01:29,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-07-21 23:01:29,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406972767] [2020-07-21 23:01:29,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 23:01:29,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:01:29,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 23:01:29,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-07-21 23:01:29,963 INFO L87 Difference]: Start difference. First operand 2227 states and 2750 transitions. Second operand 8 states. [2020-07-21 23:02:23,959 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 26 [2020-07-21 23:03:46,565 WARN L193 SmtUtils]: Spent 20.04 s on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-07-21 23:04:29,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:04:29,190 INFO L93 Difference]: Finished difference Result 5235 states and 6627 transitions. [2020-07-21 23:04:29,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-21 23:04:29,195 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 398 [2020-07-21 23:04:29,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:04:29,211 INFO L225 Difference]: With dead ends: 5235 [2020-07-21 23:04:29,211 INFO L226 Difference]: Without dead ends: 3157 [2020-07-21 23:04:29,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 689 GetRequests, 664 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 61.9s TimeCoverageRelationStatistics Valid=204, Invalid=446, Unknown=0, NotChecked=0, Total=650 [2020-07-21 23:04:29,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3157 states. [2020-07-21 23:04:29,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3157 to 2978. [2020-07-21 23:04:29,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2978 states. [2020-07-21 23:04:29,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2978 states to 2978 states and 3681 transitions. [2020-07-21 23:04:29,288 INFO L78 Accepts]: Start accepts. Automaton has 2978 states and 3681 transitions. Word has length 398 [2020-07-21 23:04:29,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:04:29,288 INFO L479 AbstractCegarLoop]: Abstraction has 2978 states and 3681 transitions. [2020-07-21 23:04:29,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 23:04:29,289 INFO L276 IsEmpty]: Start isEmpty. Operand 2978 states and 3681 transitions. [2020-07-21 23:04:29,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2020-07-21 23:04:29,298 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:04:29,299 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:04:29,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:29,514 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:04:29,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:04:29,515 INFO L82 PathProgramCache]: Analyzing trace with hash 466916981, now seen corresponding path program 1 times [2020-07-21 23:04:29,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:04:29,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322907912] [2020-07-21 23:04:29,517 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 23:04:29,687 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:04:29,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:04:29,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 23:04:29,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:04:29,804 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2020-07-21 23:04:29,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:04:29,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322907912] [2020-07-21 23:04:29,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:04:29,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:04:29,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356773263] [2020-07-21 23:04:29,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:04:29,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:04:29,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:04:29,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:04:29,806 INFO L87 Difference]: Start difference. First operand 2978 states and 3681 transitions. Second operand 3 states. [2020-07-21 23:04:31,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:04:31,711 INFO L93 Difference]: Finished difference Result 5241 states and 6519 transitions. [2020-07-21 23:04:31,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:04:31,717 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 420 [2020-07-21 23:04:31,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:04:31,718 INFO L225 Difference]: With dead ends: 5241 [2020-07-21 23:04:31,718 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 23:04:31,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:04:31,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 23:04:31,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 23:04:31,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 23:04:31,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 23:04:31,729 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 420 [2020-07-21 23:04:31,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:04:31,730 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 23:04:31,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:04:31,730 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 23:04:31,730 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 23:04:31,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:31,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 23:04:32,672 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 30 [2020-07-21 23:04:34,741 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 164 DAG size of output: 56 [2020-07-21 23:04:35,423 WARN L193 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 32 [2020-07-21 23:04:36,047 WARN L193 SmtUtils]: Spent 620.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 32 [2020-07-21 23:04:36,052 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 23:04:36,053 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a10~0 |old(~a10~0)|) (or (<= 10 |old(~a19~0)|) (< ~a19~0 10)) (<= |old(~a10~0)| ~a10~0) (= ~a1~0 |old(~a1~0)|)) [2020-07-21 23:04:36,053 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 23:04:36,053 INFO L268 CegarLoopResult]: For program point L465(lines 465 572) no Hoare annotation was computed. [2020-07-21 23:04:36,053 INFO L268 CegarLoopResult]: For program point L201-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,054 INFO L268 CegarLoopResult]: For program point L168-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,054 INFO L268 CegarLoopResult]: For program point L135-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,054 INFO L268 CegarLoopResult]: For program point L102-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,054 INFO L268 CegarLoopResult]: For program point L69-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,054 INFO L268 CegarLoopResult]: For program point L36-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,054 INFO L268 CegarLoopResult]: For program point L499(lines 499 572) no Hoare annotation was computed. [2020-07-21 23:04:36,054 INFO L268 CegarLoopResult]: For program point L301(lines 301 572) no Hoare annotation was computed. [2020-07-21 23:04:36,054 INFO L268 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2020-07-21 23:04:36,054 INFO L268 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2020-07-21 23:04:36,055 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-07-21 23:04:36,055 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-07-21 23:04:36,055 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-07-21 23:04:36,055 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-07-21 23:04:36,055 INFO L268 CegarLoopResult]: For program point L335(lines 335 572) no Hoare annotation was computed. [2020-07-21 23:04:36,055 INFO L268 CegarLoopResult]: For program point L236(lines 236 572) no Hoare annotation was computed. [2020-07-21 23:04:36,055 INFO L268 CegarLoopResult]: For program point L534(lines 534 572) no Hoare annotation was computed. [2020-07-21 23:04:36,055 INFO L268 CegarLoopResult]: For program point L171-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,055 INFO L268 CegarLoopResult]: For program point L138-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,055 INFO L268 CegarLoopResult]: For program point L105-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,056 INFO L268 CegarLoopResult]: For program point L72-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,056 INFO L268 CegarLoopResult]: For program point L39-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,056 INFO L268 CegarLoopResult]: For program point L436(lines 436 572) no Hoare annotation was computed. [2020-07-21 23:04:36,056 INFO L268 CegarLoopResult]: For program point L403(lines 403 572) no Hoare annotation was computed. [2020-07-21 23:04:36,056 INFO L268 CegarLoopResult]: For program point L370(lines 370 572) no Hoare annotation was computed. [2020-07-21 23:04:36,056 INFO L268 CegarLoopResult]: For program point L271(lines 271 572) no Hoare annotation was computed. [2020-07-21 23:04:36,056 INFO L268 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2020-07-21 23:04:36,056 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-07-21 23:04:36,056 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-07-21 23:04:36,056 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-07-21 23:04:36,056 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-07-21 23:04:36,057 INFO L268 CegarLoopResult]: For program point L569(lines 569 572) no Hoare annotation was computed. [2020-07-21 23:04:36,057 INFO L268 CegarLoopResult]: For program point L239(lines 239 572) no Hoare annotation was computed. [2020-07-21 23:04:36,057 INFO L268 CegarLoopResult]: For program point L504(lines 504 572) no Hoare annotation was computed. [2020-07-21 23:04:36,057 INFO L268 CegarLoopResult]: For program point L471(lines 471 572) no Hoare annotation was computed. [2020-07-21 23:04:36,057 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 151) no Hoare annotation was computed. [2020-07-21 23:04:36,057 INFO L268 CegarLoopResult]: For program point L306(lines 306 572) no Hoare annotation was computed. [2020-07-21 23:04:36,057 INFO L268 CegarLoopResult]: For program point L174-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,057 INFO L268 CegarLoopResult]: For program point L141-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,057 INFO L268 CegarLoopResult]: For program point L108-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,057 INFO L268 CegarLoopResult]: For program point L75-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,057 INFO L268 CegarLoopResult]: For program point L42-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,058 INFO L268 CegarLoopResult]: For program point L340(lines 340 572) no Hoare annotation was computed. [2020-07-21 23:04:36,058 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-21 23:04:36,058 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-07-21 23:04:36,058 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-07-21 23:04:36,058 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-07-21 23:04:36,058 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-07-21 23:04:36,058 INFO L268 CegarLoopResult]: For program point L540(lines 540 572) no Hoare annotation was computed. [2020-07-21 23:04:36,058 INFO L268 CegarLoopResult]: For program point L408(lines 408 572) no Hoare annotation was computed. [2020-07-21 23:04:36,058 INFO L268 CegarLoopResult]: For program point L375(lines 375 572) no Hoare annotation was computed. [2020-07-21 23:04:36,058 INFO L268 CegarLoopResult]: For program point L210(lines 210 572) no Hoare annotation was computed. [2020-07-21 23:04:36,059 INFO L268 CegarLoopResult]: For program point L177-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,059 INFO L268 CegarLoopResult]: For program point L144-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,059 INFO L268 CegarLoopResult]: For program point L111-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,059 INFO L268 CegarLoopResult]: For program point L78-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,059 INFO L268 CegarLoopResult]: For program point L45-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,059 INFO L268 CegarLoopResult]: For program point L442(lines 442 572) no Hoare annotation was computed. [2020-07-21 23:04:36,059 INFO L268 CegarLoopResult]: For program point L277(lines 277 572) no Hoare annotation was computed. [2020-07-21 23:04:36,059 INFO L268 CegarLoopResult]: For program point L244(lines 244 572) no Hoare annotation was computed. [2020-07-21 23:04:36,060 INFO L268 CegarLoopResult]: For program point L178(line 178) no Hoare annotation was computed. [2020-07-21 23:04:36,060 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-07-21 23:04:36,060 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-07-21 23:04:36,060 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-07-21 23:04:36,060 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-21 23:04:36,060 INFO L268 CegarLoopResult]: For program point L509(lines 509 572) no Hoare annotation was computed. [2020-07-21 23:04:36,060 INFO L268 CegarLoopResult]: For program point L476(lines 476 572) no Hoare annotation was computed. [2020-07-21 23:04:36,060 INFO L268 CegarLoopResult]: For program point L378(lines 378 572) no Hoare annotation was computed. [2020-07-21 23:04:36,060 INFO L268 CegarLoopResult]: For program point L345(lines 345 572) no Hoare annotation was computed. [2020-07-21 23:04:36,061 INFO L268 CegarLoopResult]: For program point L312(lines 312 572) no Hoare annotation was computed. [2020-07-21 23:04:36,061 INFO L268 CegarLoopResult]: For program point L180-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,061 INFO L268 CegarLoopResult]: For program point L147-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,061 INFO L268 CegarLoopResult]: For program point L114-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,061 INFO L268 CegarLoopResult]: For program point L81-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,061 INFO L268 CegarLoopResult]: For program point L48-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,061 INFO L268 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2020-07-21 23:04:36,061 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-07-21 23:04:36,062 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-21 23:04:36,062 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-07-21 23:04:36,062 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-07-21 23:04:36,062 INFO L268 CegarLoopResult]: For program point L545(lines 545 572) no Hoare annotation was computed. [2020-07-21 23:04:36,062 INFO L268 CegarLoopResult]: For program point L215(lines 215 572) no Hoare annotation was computed. [2020-07-21 23:04:36,062 INFO L268 CegarLoopResult]: For program point L414(lines 414 572) no Hoare annotation was computed. [2020-07-21 23:04:36,062 INFO L268 CegarLoopResult]: For program point L249(lines 249 572) no Hoare annotation was computed. [2020-07-21 23:04:36,062 INFO L268 CegarLoopResult]: For program point L183-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,062 INFO L268 CegarLoopResult]: For program point L150-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,062 INFO L268 CegarLoopResult]: For program point L117-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,062 INFO L268 CegarLoopResult]: For program point L84-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,062 INFO L268 CegarLoopResult]: For program point L51-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,062 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,063 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,063 INFO L268 CegarLoopResult]: For program point L514(lines 514 572) no Hoare annotation was computed. [2020-07-21 23:04:36,063 INFO L268 CegarLoopResult]: For program point L481(lines 481 572) no Hoare annotation was computed. [2020-07-21 23:04:36,063 INFO L268 CegarLoopResult]: For program point L448(lines 448 572) no Hoare annotation was computed. [2020-07-21 23:04:36,063 INFO L268 CegarLoopResult]: For program point L283(lines 283 572) no Hoare annotation was computed. [2020-07-21 23:04:36,063 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-07-21 23:04:36,063 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-07-21 23:04:36,063 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-07-21 23:04:36,063 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-07-21 23:04:36,063 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-07-21 23:04:36,063 INFO L268 CegarLoopResult]: For program point L548(lines 548 572) no Hoare annotation was computed. [2020-07-21 23:04:36,063 INFO L268 CegarLoopResult]: For program point L383(lines 383 572) no Hoare annotation was computed. [2020-07-21 23:04:36,063 INFO L268 CegarLoopResult]: For program point L317(lines 317 572) no Hoare annotation was computed. [2020-07-21 23:04:36,063 INFO L268 CegarLoopResult]: For program point L351(lines 351 572) no Hoare annotation was computed. [2020-07-21 23:04:36,064 INFO L268 CegarLoopResult]: For program point L186-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,064 INFO L268 CegarLoopResult]: For program point L153-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,064 INFO L268 CegarLoopResult]: For program point L120-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,064 INFO L268 CegarLoopResult]: For program point L87-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,064 INFO L268 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-07-21 23:04:36,064 INFO L268 CegarLoopResult]: For program point L54-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,064 INFO L268 CegarLoopResult]: For program point L21-2(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,064 INFO L268 CegarLoopResult]: For program point L517(lines 517 572) no Hoare annotation was computed. [2020-07-21 23:04:36,065 INFO L268 CegarLoopResult]: For program point L286(lines 286 572) no Hoare annotation was computed. [2020-07-21 23:04:36,065 INFO L268 CegarLoopResult]: For program point L220(lines 220 572) no Hoare annotation was computed. [2020-07-21 23:04:36,065 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-21 23:04:36,065 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-07-21 23:04:36,065 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-07-21 23:04:36,065 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-07-21 23:04:36,065 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-07-21 23:04:36,065 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-21 23:04:36,065 INFO L268 CegarLoopResult]: For program point L419(lines 419 572) no Hoare annotation was computed. [2020-07-21 23:04:36,065 INFO L268 CegarLoopResult]: For program point L320(lines 320 572) no Hoare annotation was computed. [2020-07-21 23:04:36,065 INFO L268 CegarLoopResult]: For program point L254(lines 254 572) no Hoare annotation was computed. [2020-07-21 23:04:36,066 INFO L268 CegarLoopResult]: For program point L354(lines 354 572) no Hoare annotation was computed. [2020-07-21 23:04:36,066 INFO L268 CegarLoopResult]: For program point L189-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,066 INFO L268 CegarLoopResult]: For program point L156-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,066 INFO L268 CegarLoopResult]: For program point L123-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,066 INFO L268 CegarLoopResult]: For program point L90-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,066 INFO L268 CegarLoopResult]: For program point L57-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,066 INFO L268 CegarLoopResult]: For program point L24-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,066 INFO L268 CegarLoopResult]: For program point L487(lines 487 572) no Hoare annotation was computed. [2020-07-21 23:04:36,066 INFO L268 CegarLoopResult]: For program point L454(lines 454 572) no Hoare annotation was computed. [2020-07-21 23:04:36,066 INFO L268 CegarLoopResult]: For program point L388(lines 388 572) no Hoare annotation was computed. [2020-07-21 23:04:36,066 INFO L268 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2020-07-21 23:04:36,066 INFO L268 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2020-07-21 23:04:36,066 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-07-21 23:04:36,066 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-07-21 23:04:36,066 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-07-21 23:04:36,067 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-21 23:04:36,067 INFO L268 CegarLoopResult]: For program point L554(lines 554 572) no Hoare annotation was computed. [2020-07-21 23:04:36,067 INFO L268 CegarLoopResult]: For program point L323(lines 323 572) no Hoare annotation was computed. [2020-07-21 23:04:36,067 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 20 574) the Hoare annotation is: (let ((.cse9 (not (<= |old(~a19~0)| 6))) (.cse10 (<= ~a19~0 6)) (.cse4 (not (<= |old(~a10~0)| 0))) (.cse5 (not (<= 9 |old(~a19~0)|))) (.cse11 (not (< 38 |old(~a1~0)|))) (.cse3 (not (<= |old(~a19~0)| 9))) (.cse12 (= ~a19~0 |old(~a19~0)|)) (.cse0 (not (<= 1 |old(~a10~0)|))) (.cse6 (<= ~a10~0 |old(~a10~0)|)) (.cse7 (<= |old(~a10~0)| ~a10~0)) (.cse8 (= ~a1~0 |old(~a1~0)|)) (.cse1 (not (= 0 ~a12~0))) (.cse2 (not (= 14 ~a4~0)))) (and (or (<= ~a19~0 9) .cse0 .cse1 .cse2 .cse3) (or .cse4 .cse1 .cse5 .cse2 (and (<= 9 ~a19~0) .cse6 .cse7 .cse8)) (or .cse9 .cse4 .cse1 .cse2 (and .cse6 .cse10 .cse7 .cse8)) (or .cse9 .cse10 .cse1 .cse2 (not (<= 2 |old(~a10~0)|))) (or .cse11 .cse0 .cse1 .cse2 .cse12) (or (and (or .cse4 .cse5 .cse3) (or .cse11 .cse3)) .cse1 .cse2 (and .cse6 .cse7 .cse12 .cse8)) (or .cse0 (and .cse6 .cse7 .cse8) .cse1 .cse2))) [2020-07-21 23:04:36,067 INFO L268 CegarLoopResult]: For program point L357(lines 357 572) no Hoare annotation was computed. [2020-07-21 23:04:36,067 INFO L268 CegarLoopResult]: For program point L291(lines 291 572) no Hoare annotation was computed. [2020-07-21 23:04:36,067 INFO L268 CegarLoopResult]: For program point L225(lines 225 572) no Hoare annotation was computed. [2020-07-21 23:04:36,067 INFO L268 CegarLoopResult]: For program point L192-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,067 INFO L268 CegarLoopResult]: For program point L159-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,067 INFO L268 CegarLoopResult]: For program point L126-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,067 INFO L268 CegarLoopResult]: For program point L93-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,068 INFO L268 CegarLoopResult]: For program point L60-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,068 INFO L268 CegarLoopResult]: For program point L27-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,068 INFO L268 CegarLoopResult]: For program point L523(lines 523 572) no Hoare annotation was computed. [2020-07-21 23:04:36,068 INFO L268 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2020-07-21 23:04:36,068 INFO L268 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-07-21 23:04:36,068 INFO L268 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-07-21 23:04:36,068 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-07-21 23:04:36,068 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-07-21 23:04:36,068 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-07-21 23:04:36,068 INFO L268 CegarLoopResult]: For program point L557(lines 557 572) no Hoare annotation was computed. [2020-07-21 23:04:36,068 INFO L268 CegarLoopResult]: For program point L425(lines 425 572) no Hoare annotation was computed. [2020-07-21 23:04:36,068 INFO L268 CegarLoopResult]: For program point L326(lines 326 572) no Hoare annotation was computed. [2020-07-21 23:04:36,068 INFO L268 CegarLoopResult]: For program point L260(lines 260 572) no Hoare annotation was computed. [2020-07-21 23:04:36,068 INFO L268 CegarLoopResult]: For program point L393(lines 393 572) no Hoare annotation was computed. [2020-07-21 23:04:36,069 INFO L268 CegarLoopResult]: For program point L360(lines 360 572) no Hoare annotation was computed. [2020-07-21 23:04:36,069 INFO L268 CegarLoopResult]: For program point L195-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,069 INFO L268 CegarLoopResult]: For program point L162-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,069 INFO L268 CegarLoopResult]: For program point L129-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,069 INFO L268 CegarLoopResult]: For program point L96-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,069 INFO L268 CegarLoopResult]: For program point L63-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,069 INFO L268 CegarLoopResult]: For program point L30-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,069 INFO L268 CegarLoopResult]: For program point L526(lines 526 572) no Hoare annotation was computed. [2020-07-21 23:04:36,069 INFO L268 CegarLoopResult]: For program point L493(lines 493 572) no Hoare annotation was computed. [2020-07-21 23:04:36,069 INFO L268 CegarLoopResult]: For program point L460(lines 460 572) no Hoare annotation was computed. [2020-07-21 23:04:36,069 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-07-21 23:04:36,069 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-07-21 23:04:36,069 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-07-21 23:04:36,069 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-07-21 23:04:36,070 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-07-21 23:04:36,070 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-21 23:04:36,070 INFO L268 CegarLoopResult]: For program point L329(lines 329 572) no Hoare annotation was computed. [2020-07-21 23:04:36,070 INFO L268 CegarLoopResult]: For program point L296(lines 296 572) no Hoare annotation was computed. [2020-07-21 23:04:36,070 INFO L268 CegarLoopResult]: For program point L231(lines 231 572) no Hoare annotation was computed. [2020-07-21 23:04:36,070 INFO L268 CegarLoopResult]: For program point L198-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,070 INFO L268 CegarLoopResult]: For program point L165-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,070 INFO L268 CegarLoopResult]: For program point L132-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,070 INFO L268 CegarLoopResult]: For program point L99-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,070 INFO L268 CegarLoopResult]: For program point L66-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,070 INFO L268 CegarLoopResult]: For program point L33-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:04:36,070 INFO L268 CegarLoopResult]: For program point L529(lines 529 572) no Hoare annotation was computed. [2020-07-21 23:04:36,070 INFO L268 CegarLoopResult]: For program point L430(lines 430 572) no Hoare annotation was computed. [2020-07-21 23:04:36,070 INFO L268 CegarLoopResult]: For program point L265(lines 265 572) no Hoare annotation was computed. [2020-07-21 23:04:36,070 INFO L268 CegarLoopResult]: For program point L199(line 199) no Hoare annotation was computed. [2020-07-21 23:04:36,071 INFO L268 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2020-07-21 23:04:36,071 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-07-21 23:04:36,071 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-07-21 23:04:36,071 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-07-21 23:04:36,071 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-21 23:04:36,071 INFO L268 CegarLoopResult]: For program point L563(lines 563 572) no Hoare annotation was computed. [2020-07-21 23:04:36,071 INFO L268 CegarLoopResult]: For program point L398(lines 398 572) no Hoare annotation was computed. [2020-07-21 23:04:36,071 INFO L268 CegarLoopResult]: For program point L365(lines 365 572) no Hoare annotation was computed. [2020-07-21 23:04:36,071 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 23:04:36,071 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a10~0 0) (= 14 ~a4~0) (<= ~a19~0 9) (<= 9 ~a19~0) (= 0 ~a12~0) (= 23 ~a1~0)) [2020-07-21 23:04:36,071 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 23:04:36,071 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 23:04:36,072 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 576 592) the Hoare annotation is: (or (not (= 23 |old(~a1~0)|)) (not (<= |old(~a10~0)| 0)) (not (= 0 ~a12~0)) (not (<= 9 |old(~a19~0)|)) (not (= 14 ~a4~0)) (not (<= |old(~a19~0)| 9)) (and (<= ~a10~0 |old(~a10~0)|) (<= |old(~a10~0)| ~a10~0) (= ~a19~0 |old(~a19~0)|) (= ~a1~0 |old(~a1~0)|))) [2020-07-21 23:04:36,072 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 576 592) no Hoare annotation was computed. [2020-07-21 23:04:36,072 INFO L264 CegarLoopResult]: At program point L590(line 590) the Hoare annotation is: (or (<= 9 ~a19~0) (<= ~a19~0 6) (< 38 ~a1~0) (not (<= |old(~a10~0)| 0)) (not (= 23 |old(~a1~0)|)) (not (<= 9 |old(~a19~0)|)) (not (= 0 ~a12~0)) (<= 1 ~a10~0) (not (= 14 ~a4~0)) (not (<= |old(~a19~0)| 9))) [2020-07-21 23:04:36,072 INFO L268 CegarLoopResult]: For program point L590-1(line 590) no Hoare annotation was computed. [2020-07-21 23:04:36,072 INFO L268 CegarLoopResult]: For program point L587(line 587) no Hoare annotation was computed. [2020-07-21 23:04:36,072 INFO L264 CegarLoopResult]: At program point L582-2(lines 582 591) the Hoare annotation is: (or (<= 9 ~a19~0) (<= ~a19~0 6) (< 38 ~a1~0) (not (<= |old(~a10~0)| 0)) (not (= 23 |old(~a1~0)|)) (not (<= 9 |old(~a19~0)|)) (not (= 0 ~a12~0)) (<= 1 ~a10~0) (not (= 14 ~a4~0)) (not (<= |old(~a19~0)| 9))) [2020-07-21 23:04:36,072 INFO L268 CegarLoopResult]: For program point L582-3(lines 576 592) no Hoare annotation was computed. [2020-07-21 23:04:36,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:04:36 BoogieIcfgContainer [2020-07-21 23:04:36,096 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 23:04:36,098 INFO L168 Benchmark]: Toolchain (without parser) took 265825.03 ms. Allocated memory was 139.5 MB in the beginning and 524.8 MB in the end (delta: 385.4 MB). Free memory was 101.3 MB in the beginning and 390.6 MB in the end (delta: -289.4 MB). Peak memory consumption was 428.2 MB. Max. memory is 7.1 GB. [2020-07-21 23:04:36,099 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-21 23:04:36,100 INFO L168 Benchmark]: CACSL2BoogieTranslator took 693.65 ms. Allocated memory was 139.5 MB in the beginning and 206.0 MB in the end (delta: 66.6 MB). Free memory was 100.8 MB in the beginning and 171.0 MB in the end (delta: -70.2 MB). Peak memory consumption was 34.5 MB. Max. memory is 7.1 GB. [2020-07-21 23:04:36,100 INFO L168 Benchmark]: Boogie Preprocessor took 135.63 ms. Allocated memory is still 206.0 MB. Free memory was 171.0 MB in the beginning and 166.2 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2020-07-21 23:04:36,101 INFO L168 Benchmark]: RCFGBuilder took 1269.91 ms. Allocated memory was 206.0 MB in the beginning and 237.0 MB in the end (delta: 30.9 MB). Free memory was 166.2 MB in the beginning and 177.7 MB in the end (delta: -11.4 MB). Peak memory consumption was 79.6 MB. Max. memory is 7.1 GB. [2020-07-21 23:04:36,102 INFO L168 Benchmark]: TraceAbstraction took 263719.13 ms. Allocated memory was 237.0 MB in the beginning and 524.8 MB in the end (delta: 287.8 MB). Free memory was 177.7 MB in the beginning and 390.6 MB in the end (delta: -213.0 MB). Peak memory consumption was 407.0 MB. Max. memory is 7.1 GB. [2020-07-21 23:04:36,106 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 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 693.65 ms. Allocated memory was 139.5 MB in the beginning and 206.0 MB in the end (delta: 66.6 MB). Free memory was 100.8 MB in the beginning and 171.0 MB in the end (delta: -70.2 MB). Peak memory consumption was 34.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.63 ms. Allocated memory is still 206.0 MB. Free memory was 171.0 MB in the beginning and 166.2 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1269.91 ms. Allocated memory was 206.0 MB in the beginning and 237.0 MB in the end (delta: 30.9 MB). Free memory was 166.2 MB in the beginning and 177.7 MB in the end (delta: -11.4 MB). Peak memory consumption was 79.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 263719.13 ms. Allocated memory was 237.0 MB in the beginning and 524.8 MB in the end (delta: 287.8 MB). Free memory was 177.7 MB in the beginning and 390.6 MB in the end (delta: -213.0 MB). Peak memory consumption was 407.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 151]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 582]: Loop Invariant Derived loop invariant: ((((((((9 <= a19 || a19 <= 6) || 38 < a1) || !(\old(a10) <= 0)) || !(23 == \old(a1))) || !(9 <= \old(a19))) || !(0 == a12)) || 1 <= a10) || !(14 == a4)) || !(\old(a19) <= 9) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 259.5s, OverallIterations: 10, TraceHistogramMax: 4, AutomataDifference: 192.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 908 SDtfs, 2503 SDslu, 338 SDs, 0 SdLazy, 8098 SolverSat, 1333 SolverUnsat, 65 SolverUnknown, 0 SolverNotchecked, 163.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3924 GetRequests, 3840 SyntacticMatches, 10 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 82.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2978occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 10 MinimizatonAttempts, 693 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 95 PreInvPairs, 143 NumberOfFragments, 338 HoareAnnotationTreeSize, 95 FomulaSimplifications, 2872 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 7 FomulaSimplificationsInter, 4096 FormulaSimplificationTreeSizeReductionInter, 3.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 63.3s InterpolantComputationTime, 2505 NumberOfCodeBlocks, 1979 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 3333 ConstructedInterpolants, 12 QuantifiedInterpolants, 3988125 SizeOfPredicates, 26 NumberOfNonLiveVariables, 3486 ConjunctsInSsa, 107 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 2635/2921 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...