/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_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 01:27:50,632 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-21 01:27:50,655 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 01:27:50,656 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 01:27:50,657 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 01:27:50,658 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 01:27:50,659 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 01:27:50,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 01:27:50,664 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 01:27:50,666 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 01:27:50,672 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 01:27:50,673 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 01:27:50,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 01:27:50,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 01:27:50,678 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 01:27:50,694 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 01:27:50,716 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 01:27:50,716 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 01:27:50,718 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 01:27:50,718 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 01:27:50,718 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 01:27:50,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 01:27:50,719 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 01:27:50,719 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 01:27:50,719 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 01:27:50,719 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 01:27:50,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 01:27:50,721 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 01:27:50,721 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 01:27:50,721 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 01:27:50,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 01:27:50,721 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 01:27:50,722 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 01:27:50,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 01:27:50,722 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 01:27:50,722 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 01:27:50,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 01:27:50,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 01:27:50,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 01:27:50,723 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 01:27:50,723 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 01:27:50,723 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 01:27:50,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:50,724 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 01:27:50,724 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 01:27:50,724 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 01:27:51,050 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 01:27:51,065 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 01:27:51,069 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 01:27:51,073 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 01:27:51,074 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 01:27:51,074 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label33.c [2020-07-21 01:27:51,150 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f564a2713/7eb96bbf76c04241abd1c638fc7baee2/FLAG52b5c4116 [2020-07-21 01:27:51,770 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 01:27:51,771 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label33.c [2020-07-21 01:27:51,782 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f564a2713/7eb96bbf76c04241abd1c638fc7baee2/FLAG52b5c4116 [2020-07-21 01:27:52,009 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f564a2713/7eb96bbf76c04241abd1c638fc7baee2 [2020-07-21 01:27:52,020 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 01:27:52,023 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 01:27:52,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 01:27:52,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 01:27:52,028 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 01:27:52,029 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:27:52" (1/1) ... [2020-07-21 01:27:52,032 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18d37935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:52, skipping insertion in model container [2020-07-21 01:27:52,032 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:27:52" (1/1) ... [2020-07-21 01:27:52,041 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 01:27:52,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 01:27:52,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:27:52,645 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 01:27:52,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:27:52,822 INFO L208 MainTranslator]: Completed translation [2020-07-21 01:27:52,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:52 WrapperNode [2020-07-21 01:27:52,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 01:27:52,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 01:27:52,824 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 01:27:52,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 01:27:52,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:52" (1/1) ... [2020-07-21 01:27:52,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:52" (1/1) ... [2020-07-21 01:27:52,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:52" (1/1) ... [2020-07-21 01:27:52,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:52" (1/1) ... [2020-07-21 01:27:52,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:52" (1/1) ... [2020-07-21 01:27:52,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:52" (1/1) ... [2020-07-21 01:27:52,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:52" (1/1) ... [2020-07-21 01:27:52,953 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 01:27:52,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 01:27:52,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 01:27:52,955 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 01:27:52,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 01:27:53,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 01:27:53,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 01:27:53,039 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 01:27:53,039 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 01:27:53,039 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 01:27:53,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 01:27:53,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 01:27:53,040 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 01:27:53,041 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 01:27:53,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 01:27:53,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 01:27:54,334 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 01:27:54,334 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 01:27:54,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:27:54 BoogieIcfgContainer [2020-07-21 01:27:54,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 01:27:54,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 01:27:54,343 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 01:27:54,346 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 01:27:54,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:27:52" (1/3) ... [2020-07-21 01:27:54,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c2c994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:27:54, skipping insertion in model container [2020-07-21 01:27:54,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:52" (2/3) ... [2020-07-21 01:27:54,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c2c994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:27:54, skipping insertion in model container [2020-07-21 01:27:54,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:27:54" (3/3) ... [2020-07-21 01:27:54,350 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label33.c [2020-07-21 01:27:54,362 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 01:27:54,370 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 01:27:54,387 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 01:27:54,420 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 01:27:54,420 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 01:27:54,420 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 01:27:54,420 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 01:27:54,421 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 01:27:54,421 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 01:27:54,421 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 01:27:54,421 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 01:27:54,449 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-07-21 01:27:54,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-07-21 01:27:54,459 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:27:54,461 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] [2020-07-21 01:27:54,461 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:27:54,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:27:54,469 INFO L82 PathProgramCache]: Analyzing trace with hash -878124393, now seen corresponding path program 1 times [2020-07-21 01:27:54,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:27:54,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151054080] [2020-07-21 01:27:54,481 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:54,642 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:27:54,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:27:54,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 01:27:54,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:27:54,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:27:54,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:27:54,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151054080] [2020-07-21 01:27:54,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:27:54,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:27:54,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412291983] [2020-07-21 01:27:54,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:27:54,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:27:54,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:27:54,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:27:54,749 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2020-07-21 01:27:55,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:27:55,861 INFO L93 Difference]: Finished difference Result 571 states and 989 transitions. [2020-07-21 01:27:55,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:27:55,864 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2020-07-21 01:27:55,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:27:55,881 INFO L225 Difference]: With dead ends: 571 [2020-07-21 01:27:55,881 INFO L226 Difference]: Without dead ends: 294 [2020-07-21 01:27:55,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:27:55,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-07-21 01:27:55,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2020-07-21 01:27:56,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-07-21 01:27:56,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 391 transitions. [2020-07-21 01:27:56,009 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 391 transitions. Word has length 50 [2020-07-21 01:27:56,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:27:56,010 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 391 transitions. [2020-07-21 01:27:56,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:27:56,010 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 391 transitions. [2020-07-21 01:27:56,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-07-21 01:27:56,023 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:27:56,023 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:27:56,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:56,238 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:27:56,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:27:56,239 INFO L82 PathProgramCache]: Analyzing trace with hash 879708058, now seen corresponding path program 1 times [2020-07-21 01:27:56,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:27:56,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789449464] [2020-07-21 01:27:56,240 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:56,342 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:27:56,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:27:56,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 01:27:56,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:27:56,404 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-21 01:27:56,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:27:56,521 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-21 01:27:56,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1789449464] [2020-07-21 01:27:56,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-21 01:27:56,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2020-07-21 01:27:56,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296250192] [2020-07-21 01:27:56,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 01:27:56,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:27:56,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 01:27:56,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 01:27:56,526 INFO L87 Difference]: Start difference. First operand 294 states and 391 transitions. Second operand 4 states. [2020-07-21 01:27:57,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:27:57,262 INFO L93 Difference]: Finished difference Result 586 states and 786 transitions. [2020-07-21 01:27:57,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 01:27:57,262 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-07-21 01:27:57,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:27:57,270 INFO L225 Difference]: With dead ends: 586 [2020-07-21 01:27:57,270 INFO L226 Difference]: Without dead ends: 584 [2020-07-21 01:27:57,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 01:27:57,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2020-07-21 01:27:57,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 584. [2020-07-21 01:27:57,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 584 states. [2020-07-21 01:27:57,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 784 transitions. [2020-07-21 01:27:57,306 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 784 transitions. Word has length 120 [2020-07-21 01:27:57,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:27:57,307 INFO L479 AbstractCegarLoop]: Abstraction has 584 states and 784 transitions. [2020-07-21 01:27:57,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 01:27:57,307 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 784 transitions. [2020-07-21 01:27:57,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-07-21 01:27:57,309 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:27:57,310 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:27:57,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:57,525 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:27:57,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:27:57,525 INFO L82 PathProgramCache]: Analyzing trace with hash -529545742, now seen corresponding path program 1 times [2020-07-21 01:27:57,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:27:57,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303220220] [2020-07-21 01:27:57,527 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:57,648 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:27:57,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:27:57,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 01:27:57,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:27:57,714 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:27:57,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:27:57,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303220220] [2020-07-21 01:27:57,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:27:57,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 01:27:57,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701259200] [2020-07-21 01:27:57,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 01:27:57,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:27:57,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 01:27:57,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 01:27:57,718 INFO L87 Difference]: Start difference. First operand 584 states and 784 transitions. Second operand 5 states. [2020-07-21 01:27:58,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:27:58,848 INFO L93 Difference]: Finished difference Result 1472 states and 2014 transitions. [2020-07-21 01:27:58,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 01:27:58,850 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-07-21 01:27:58,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:27:58,858 INFO L225 Difference]: With dead ends: 1472 [2020-07-21 01:27:58,858 INFO L226 Difference]: Without dead ends: 894 [2020-07-21 01:27:58,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-21 01:27:58,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2020-07-21 01:27:58,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 880. [2020-07-21 01:27:58,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2020-07-21 01:27:58,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1114 transitions. [2020-07-21 01:27:58,900 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1114 transitions. Word has length 172 [2020-07-21 01:27:58,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:27:58,901 INFO L479 AbstractCegarLoop]: Abstraction has 880 states and 1114 transitions. [2020-07-21 01:27:58,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 01:27:58,901 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1114 transitions. [2020-07-21 01:27:58,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-07-21 01:27:58,904 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:27:58,904 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, 2, 2, 2, 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 01:27:59,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:59,118 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:27:59,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:27:59,119 INFO L82 PathProgramCache]: Analyzing trace with hash 983594757, now seen corresponding path program 1 times [2020-07-21 01:27:59,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:27:59,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215765954] [2020-07-21 01:27:59,121 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:59,243 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:27:59,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:27:59,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:27:59,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:27:59,308 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:27:59,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:27:59,464 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:27:59,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215765954] [2020-07-21 01:27:59,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:27:59,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:27:59,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998046990] [2020-07-21 01:27:59,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:27:59,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:27:59,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:27:59,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:27:59,469 INFO L87 Difference]: Start difference. First operand 880 states and 1114 transitions. Second operand 7 states. [2020-07-21 01:28:01,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:28:01,020 INFO L93 Difference]: Finished difference Result 2352 states and 3091 transitions. [2020-07-21 01:28:01,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 01:28:01,021 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 202 [2020-07-21 01:28:01,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:28:01,029 INFO L225 Difference]: With dead ends: 2352 [2020-07-21 01:28:01,029 INFO L226 Difference]: Without dead ends: 1478 [2020-07-21 01:28:01,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 399 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-07-21 01:28:01,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2020-07-21 01:28:01,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1474. [2020-07-21 01:28:01,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2020-07-21 01:28:01,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 1881 transitions. [2020-07-21 01:28:01,077 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 1881 transitions. Word has length 202 [2020-07-21 01:28:01,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:28:01,078 INFO L479 AbstractCegarLoop]: Abstraction has 1474 states and 1881 transitions. [2020-07-21 01:28:01,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:28:01,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 1881 transitions. [2020-07-21 01:28:01,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-07-21 01:28:01,083 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:28:01,083 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 01:28:01,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:28:01,296 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:28:01,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:28:01,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1991686621, now seen corresponding path program 1 times [2020-07-21 01:28:01,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:28:01,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568502947] [2020-07-21 01:28:01,299 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:28:01,393 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:28:01,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:28:01,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 01:28:01,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:28:01,482 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-07-21 01:28:01,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:28:01,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568502947] [2020-07-21 01:28:01,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:28:01,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 01:28:01,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909986023] [2020-07-21 01:28:01,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 01:28:01,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:28:01,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 01:28:01,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 01:28:01,487 INFO L87 Difference]: Start difference. First operand 1474 states and 1881 transitions. Second operand 5 states. [2020-07-21 01:28:02,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:28:02,499 INFO L93 Difference]: Finished difference Result 3119 states and 3989 transitions. [2020-07-21 01:28:02,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 01:28:02,500 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 246 [2020-07-21 01:28:02,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:28:02,513 INFO L225 Difference]: With dead ends: 3119 [2020-07-21 01:28:02,513 INFO L226 Difference]: Without dead ends: 1651 [2020-07-21 01:28:02,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:28:02,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1651 states. [2020-07-21 01:28:02,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1651 to 1341. [2020-07-21 01:28:02,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1341 states. [2020-07-21 01:28:02,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 1714 transitions. [2020-07-21 01:28:02,592 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 1714 transitions. Word has length 246 [2020-07-21 01:28:02,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:28:02,593 INFO L479 AbstractCegarLoop]: Abstraction has 1341 states and 1714 transitions. [2020-07-21 01:28:02,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 01:28:02,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 1714 transitions. [2020-07-21 01:28:02,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-07-21 01:28:02,606 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:28:02,607 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:28:02,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:28:02,821 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:28:02,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:28:02,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1624856154, now seen corresponding path program 1 times [2020-07-21 01:28:02,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:28:02,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1306579441] [2020-07-21 01:28:02,822 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:28:02,942 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:28:02,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:28:02,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:28:02,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:28:02,981 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-21 01:28:02,982 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:28:03,072 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 300 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-07-21 01:28:03,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:28:03,163 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:28:03,165 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:28:03,168 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 1] term [2020-07-21 01:28:03,169 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:28:03,296 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 201 proven. 77 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-07-21 01:28:03,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1306579441] [2020-07-21 01:28:03,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:28:03,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 01:28:03,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121962748] [2020-07-21 01:28:03,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 01:28:03,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:28:03,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 01:28:03,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 01:28:03,299 INFO L87 Difference]: Start difference. First operand 1341 states and 1714 transitions. Second operand 6 states. [2020-07-21 01:28:04,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:28:04,430 INFO L93 Difference]: Finished difference Result 2716 states and 3587 transitions. [2020-07-21 01:28:04,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 01:28:04,431 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 316 [2020-07-21 01:28:04,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:28:04,439 INFO L225 Difference]: With dead ends: 2716 [2020-07-21 01:28:04,440 INFO L226 Difference]: Without dead ends: 1524 [2020-07-21 01:28:04,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 637 GetRequests, 628 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-21 01:28:04,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2020-07-21 01:28:04,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1500. [2020-07-21 01:28:04,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1500 states. [2020-07-21 01:28:04,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 1791 transitions. [2020-07-21 01:28:04,488 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 1791 transitions. Word has length 316 [2020-07-21 01:28:04,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:28:04,489 INFO L479 AbstractCegarLoop]: Abstraction has 1500 states and 1791 transitions. [2020-07-21 01:28:04,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 01:28:04,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 1791 transitions. [2020-07-21 01:28:04,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-07-21 01:28:04,496 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:28:04,496 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:28:04,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:28:04,711 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:28:04,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:28:04,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1140102879, now seen corresponding path program 1 times [2020-07-21 01:28:04,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:28:04,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711614450] [2020-07-21 01:28:04,712 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:28:04,824 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:28:04,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:28:04,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:28:04,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:28:05,001 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 316 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-07-21 01:28:05,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:28:05,141 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 208 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-07-21 01:28:05,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711614450] [2020-07-21 01:28:05,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:28:05,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:28:05,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286361279] [2020-07-21 01:28:05,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:28:05,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:28:05,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:28:05,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:28:05,144 INFO L87 Difference]: Start difference. First operand 1500 states and 1791 transitions. Second operand 7 states. [2020-07-21 01:28:06,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:28:06,800 INFO L93 Difference]: Finished difference Result 4156 states and 5003 transitions. [2020-07-21 01:28:06,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 01:28:06,801 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 325 [2020-07-21 01:28:06,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:28:06,812 INFO L225 Difference]: With dead ends: 4156 [2020-07-21 01:28:06,812 INFO L226 Difference]: Without dead ends: 2207 [2020-07-21 01:28:06,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 653 GetRequests, 645 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 01:28:06,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2020-07-21 01:28:06,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 1345. [2020-07-21 01:28:06,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1345 states. [2020-07-21 01:28:06,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 1533 transitions. [2020-07-21 01:28:06,860 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 1533 transitions. Word has length 325 [2020-07-21 01:28:06,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:28:06,860 INFO L479 AbstractCegarLoop]: Abstraction has 1345 states and 1533 transitions. [2020-07-21 01:28:06,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:28:06,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 1533 transitions. [2020-07-21 01:28:06,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2020-07-21 01:28:06,868 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:28:06,868 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:28:07,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:28:07,082 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:28:07,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:28:07,083 INFO L82 PathProgramCache]: Analyzing trace with hash 197825049, now seen corresponding path program 1 times [2020-07-21 01:28:07,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:28:07,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243003759] [2020-07-21 01:28:07,084 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:28:07,218 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:28:07,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:28:07,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-21 01:28:07,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:28:07,244 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:28:07,247 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 01:28:07,250 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 01:28:07,252 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:28:07,258 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 01:28:07,265 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:28:07,266 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:28:07,271 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:28:07,273 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 01:28:07,278 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 01:28:07,280 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 01:28:07,286 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 01:28:07,288 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 01:28:07,292 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:28:07,298 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:28:07,303 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:28:07,305 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 01:28:07,307 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:28:07,310 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:28:07,312 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:28:07,314 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 01:28:07,316 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 01:28:07,317 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:28:07,318 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:28:07,320 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:28:07,325 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 01:28:19,803 WARN L193 SmtUtils]: Spent 12.39 s on a formula simplification. DAG size of input: 64 DAG size of output: 31 [2020-07-21 01:28:19,839 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 01:28:19,935 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-21 01:28:19,935 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:28:19,936 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:28:19,964 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:28:20,141 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 352 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-07-21 01:28:20,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:28:20,256 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:28:20,257 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:28:20,258 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:28:20,259 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:28:20,278 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:28:20,279 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:28:20,374 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:28:20,378 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:28:20,379 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:28:20,380 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:28:20,382 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:28:20,383 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:28:20,387 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:28:20,390 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:28:20,390 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:28:20,393 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:28:20,393 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:28:20,394 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:28:20,398 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:28:20,398 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:28:20,402 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:28:20,403 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:28:20,403 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:28:20,406 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:28:20,408 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 01:28:20,410 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:28:20,411 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:28:20,411 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:28:20,412 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:28:20,413 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:28:20,416 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 01:28:20,419 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:28:20,420 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:28:20,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [243003759] [2020-07-21 01:28:20,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 01:28:20,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-07-21 01:28:20,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142023222] [2020-07-21 01:28:20,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 01:28:20,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:28:20,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 01:28:20,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-07-21 01:28:20,600 INFO L87 Difference]: Start difference. First operand 1345 states and 1533 transitions. Second operand 8 states. [2020-07-21 01:28:35,856 WARN L193 SmtUtils]: Spent 12.42 s on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-07-21 01:28:36,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:28:36,732 INFO L93 Difference]: Finished difference Result 3874 states and 4644 transitions. [2020-07-21 01:28:36,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-21 01:28:36,733 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 361 [2020-07-21 01:28:36,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:28:36,744 INFO L225 Difference]: With dead ends: 3874 [2020-07-21 01:28:36,744 INFO L226 Difference]: Without dead ends: 2678 [2020-07-21 01:28:36,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 612 GetRequests, 591 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 25.4s TimeCoverageRelationStatistics Valid=136, Invalid=284, Unknown=0, NotChecked=0, Total=420 [2020-07-21 01:28:36,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2678 states. [2020-07-21 01:28:36,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2678 to 2664. [2020-07-21 01:28:36,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2664 states. [2020-07-21 01:28:36,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2664 states to 2664 states and 3121 transitions. [2020-07-21 01:28:36,816 INFO L78 Accepts]: Start accepts. Automaton has 2664 states and 3121 transitions. Word has length 361 [2020-07-21 01:28:36,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:28:36,817 INFO L479 AbstractCegarLoop]: Abstraction has 2664 states and 3121 transitions. [2020-07-21 01:28:36,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 01:28:36,817 INFO L276 IsEmpty]: Start isEmpty. Operand 2664 states and 3121 transitions. [2020-07-21 01:28:36,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2020-07-21 01:28:36,827 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:28:36,828 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:28:37,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:28:37,044 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:28:37,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:28:37,045 INFO L82 PathProgramCache]: Analyzing trace with hash -976987779, now seen corresponding path program 1 times [2020-07-21 01:28:37,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:28:37,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785328955] [2020-07-21 01:28:37,045 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 01:28:37,260 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:28:37,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:28:37,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:28:37,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:28:37,355 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2020-07-21 01:28:37,355 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:28:37,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785328955] [2020-07-21 01:28:37,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:28:37,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:28:37,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232383211] [2020-07-21 01:28:37,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:28:37,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:28:37,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:28:37,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:28:37,358 INFO L87 Difference]: Start difference. First operand 2664 states and 3121 transitions. Second operand 3 states. [2020-07-21 01:28:38,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:28:38,092 INFO L93 Difference]: Finished difference Result 5322 states and 6231 transitions. [2020-07-21 01:28:38,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:28:38,093 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 375 [2020-07-21 01:28:38,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:28:38,104 INFO L225 Difference]: With dead ends: 5322 [2020-07-21 01:28:38,104 INFO L226 Difference]: Without dead ends: 2662 [2020-07-21 01:28:38,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 373 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:28:38,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2662 states. [2020-07-21 01:28:38,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2662 to 2519. [2020-07-21 01:28:38,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2519 states. [2020-07-21 01:28:38,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2519 states to 2519 states and 2915 transitions. [2020-07-21 01:28:38,182 INFO L78 Accepts]: Start accepts. Automaton has 2519 states and 2915 transitions. Word has length 375 [2020-07-21 01:28:38,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:28:38,183 INFO L479 AbstractCegarLoop]: Abstraction has 2519 states and 2915 transitions. [2020-07-21 01:28:38,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:28:38,183 INFO L276 IsEmpty]: Start isEmpty. Operand 2519 states and 2915 transitions. [2020-07-21 01:28:38,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-07-21 01:28:38,194 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:28:38,195 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:28:38,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:28:38,410 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:28:38,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:28:38,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1149404454, now seen corresponding path program 1 times [2020-07-21 01:28:38,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:28:38,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743488370] [2020-07-21 01:28:38,411 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 01:28:38,650 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:28:38,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:28:38,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:28:38,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:28:38,751 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2020-07-21 01:28:38,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:28:38,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743488370] [2020-07-21 01:28:38,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:28:38,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:28:38,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254932250] [2020-07-21 01:28:38,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:28:38,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:28:38,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:28:38,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:28:38,753 INFO L87 Difference]: Start difference. First operand 2519 states and 2915 transitions. Second operand 3 states. [2020-07-21 01:28:39,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:28:39,277 INFO L93 Difference]: Finished difference Result 2519 states and 2915 transitions. [2020-07-21 01:28:39,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:28:39,279 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 380 [2020-07-21 01:28:39,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:28:39,280 INFO L225 Difference]: With dead ends: 2519 [2020-07-21 01:28:39,280 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 01:28:39,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:28:39,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 01:28:39,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 01:28:39,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 01:28:39,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 01:28:39,286 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 380 [2020-07-21 01:28:39,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:28:39,286 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 01:28:39,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:28:39,287 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 01:28:39,287 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 01:28:39,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:28:39,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 01:28:40,833 WARN L193 SmtUtils]: Spent 752.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 40 [2020-07-21 01:28:41,264 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 40 [2020-07-21 01:28:41,650 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 40 [2020-07-21 01:28:41,654 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 01:28:41,655 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a10~0 |old(~a10~0)|) (or (< 7 ~a19~0) (< |old(~a19~0)| 8)) (<= |old(~a10~0)| ~a10~0) (<= ~a19~0 |old(~a19~0)|) (= ~a1~0 |old(~a1~0)|)) [2020-07-21 01:28:41,655 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 01:28:41,655 INFO L268 CegarLoopResult]: For program point L465(lines 465 572) no Hoare annotation was computed. [2020-07-21 01:28:41,655 INFO L268 CegarLoopResult]: For program point L201-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,655 INFO L268 CegarLoopResult]: For program point L168-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,655 INFO L268 CegarLoopResult]: For program point L135-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,656 INFO L268 CegarLoopResult]: For program point L102-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,656 INFO L268 CegarLoopResult]: For program point L69-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,656 INFO L268 CegarLoopResult]: For program point L36-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,656 INFO L268 CegarLoopResult]: For program point L499(lines 499 572) no Hoare annotation was computed. [2020-07-21 01:28:41,656 INFO L268 CegarLoopResult]: For program point L301(lines 301 572) no Hoare annotation was computed. [2020-07-21 01:28:41,656 INFO L268 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2020-07-21 01:28:41,656 INFO L268 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2020-07-21 01:28:41,657 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-07-21 01:28:41,657 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-07-21 01:28:41,657 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-07-21 01:28:41,657 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-07-21 01:28:41,657 INFO L268 CegarLoopResult]: For program point L335(lines 335 572) no Hoare annotation was computed. [2020-07-21 01:28:41,657 INFO L268 CegarLoopResult]: For program point L236(lines 236 572) no Hoare annotation was computed. [2020-07-21 01:28:41,657 INFO L268 CegarLoopResult]: For program point L534(lines 534 572) no Hoare annotation was computed. [2020-07-21 01:28:41,658 INFO L268 CegarLoopResult]: For program point L171-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,658 INFO L268 CegarLoopResult]: For program point L138-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,658 INFO L268 CegarLoopResult]: For program point L105-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,658 INFO L268 CegarLoopResult]: For program point L72-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,658 INFO L268 CegarLoopResult]: For program point L39-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,658 INFO L268 CegarLoopResult]: For program point L436(lines 436 572) no Hoare annotation was computed. [2020-07-21 01:28:41,658 INFO L268 CegarLoopResult]: For program point L403(lines 403 572) no Hoare annotation was computed. [2020-07-21 01:28:41,658 INFO L268 CegarLoopResult]: For program point L370(lines 370 572) no Hoare annotation was computed. [2020-07-21 01:28:41,659 INFO L268 CegarLoopResult]: For program point L271(lines 271 572) no Hoare annotation was computed. [2020-07-21 01:28:41,659 INFO L268 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2020-07-21 01:28:41,659 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-07-21 01:28:41,659 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-07-21 01:28:41,659 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-07-21 01:28:41,659 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-07-21 01:28:41,659 INFO L268 CegarLoopResult]: For program point L569(lines 569 572) no Hoare annotation was computed. [2020-07-21 01:28:41,659 INFO L268 CegarLoopResult]: For program point L239(lines 239 572) no Hoare annotation was computed. [2020-07-21 01:28:41,659 INFO L268 CegarLoopResult]: For program point L504(lines 504 572) no Hoare annotation was computed. [2020-07-21 01:28:41,659 INFO L268 CegarLoopResult]: For program point L471(lines 471 572) no Hoare annotation was computed. [2020-07-21 01:28:41,659 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 136) no Hoare annotation was computed. [2020-07-21 01:28:41,660 INFO L268 CegarLoopResult]: For program point L306(lines 306 572) no Hoare annotation was computed. [2020-07-21 01:28:41,660 INFO L268 CegarLoopResult]: For program point L174-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,660 INFO L268 CegarLoopResult]: For program point L141-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,660 INFO L268 CegarLoopResult]: For program point L108-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,660 INFO L268 CegarLoopResult]: For program point L75-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,660 INFO L268 CegarLoopResult]: For program point L42-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,660 INFO L268 CegarLoopResult]: For program point L340(lines 340 572) no Hoare annotation was computed. [2020-07-21 01:28:41,660 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-21 01:28:41,660 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-07-21 01:28:41,660 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-07-21 01:28:41,661 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-07-21 01:28:41,661 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-07-21 01:28:41,661 INFO L268 CegarLoopResult]: For program point L540(lines 540 572) no Hoare annotation was computed. [2020-07-21 01:28:41,661 INFO L268 CegarLoopResult]: For program point L408(lines 408 572) no Hoare annotation was computed. [2020-07-21 01:28:41,661 INFO L268 CegarLoopResult]: For program point L375(lines 375 572) no Hoare annotation was computed. [2020-07-21 01:28:41,661 INFO L268 CegarLoopResult]: For program point L210(lines 210 572) no Hoare annotation was computed. [2020-07-21 01:28:41,661 INFO L268 CegarLoopResult]: For program point L177-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,661 INFO L268 CegarLoopResult]: For program point L144-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,661 INFO L268 CegarLoopResult]: For program point L111-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,661 INFO L268 CegarLoopResult]: For program point L78-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,661 INFO L268 CegarLoopResult]: For program point L45-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,662 INFO L268 CegarLoopResult]: For program point L442(lines 442 572) no Hoare annotation was computed. [2020-07-21 01:28:41,662 INFO L268 CegarLoopResult]: For program point L277(lines 277 572) no Hoare annotation was computed. [2020-07-21 01:28:41,662 INFO L268 CegarLoopResult]: For program point L244(lines 244 572) no Hoare annotation was computed. [2020-07-21 01:28:41,662 INFO L268 CegarLoopResult]: For program point L178(line 178) no Hoare annotation was computed. [2020-07-21 01:28:41,662 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-07-21 01:28:41,662 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-07-21 01:28:41,662 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-07-21 01:28:41,662 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-21 01:28:41,663 INFO L268 CegarLoopResult]: For program point L509(lines 509 572) no Hoare annotation was computed. [2020-07-21 01:28:41,663 INFO L268 CegarLoopResult]: For program point L476(lines 476 572) no Hoare annotation was computed. [2020-07-21 01:28:41,663 INFO L268 CegarLoopResult]: For program point L378(lines 378 572) no Hoare annotation was computed. [2020-07-21 01:28:41,663 INFO L268 CegarLoopResult]: For program point L345(lines 345 572) no Hoare annotation was computed. [2020-07-21 01:28:41,663 INFO L268 CegarLoopResult]: For program point L312(lines 312 572) no Hoare annotation was computed. [2020-07-21 01:28:41,663 INFO L268 CegarLoopResult]: For program point L180-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,663 INFO L268 CegarLoopResult]: For program point L147-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,663 INFO L268 CegarLoopResult]: For program point L114-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,663 INFO L268 CegarLoopResult]: For program point L81-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,664 INFO L268 CegarLoopResult]: For program point L48-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,664 INFO L268 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2020-07-21 01:28:41,664 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-07-21 01:28:41,664 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-21 01:28:41,664 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-07-21 01:28:41,664 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-07-21 01:28:41,664 INFO L268 CegarLoopResult]: For program point L545(lines 545 572) no Hoare annotation was computed. [2020-07-21 01:28:41,664 INFO L268 CegarLoopResult]: For program point L215(lines 215 572) no Hoare annotation was computed. [2020-07-21 01:28:41,664 INFO L268 CegarLoopResult]: For program point L414(lines 414 572) no Hoare annotation was computed. [2020-07-21 01:28:41,664 INFO L268 CegarLoopResult]: For program point L249(lines 249 572) no Hoare annotation was computed. [2020-07-21 01:28:41,664 INFO L268 CegarLoopResult]: For program point L183-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,664 INFO L268 CegarLoopResult]: For program point L150-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,664 INFO L268 CegarLoopResult]: For program point L117-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,665 INFO L268 CegarLoopResult]: For program point L84-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,665 INFO L268 CegarLoopResult]: For program point L51-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,665 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,665 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,665 INFO L268 CegarLoopResult]: For program point L514(lines 514 572) no Hoare annotation was computed. [2020-07-21 01:28:41,665 INFO L268 CegarLoopResult]: For program point L481(lines 481 572) no Hoare annotation was computed. [2020-07-21 01:28:41,665 INFO L268 CegarLoopResult]: For program point L448(lines 448 572) no Hoare annotation was computed. [2020-07-21 01:28:41,665 INFO L268 CegarLoopResult]: For program point L283(lines 283 572) no Hoare annotation was computed. [2020-07-21 01:28:41,665 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-07-21 01:28:41,665 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-07-21 01:28:41,665 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-07-21 01:28:41,665 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-07-21 01:28:41,665 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-07-21 01:28:41,666 INFO L268 CegarLoopResult]: For program point L548(lines 548 572) no Hoare annotation was computed. [2020-07-21 01:28:41,666 INFO L268 CegarLoopResult]: For program point L383(lines 383 572) no Hoare annotation was computed. [2020-07-21 01:28:41,666 INFO L268 CegarLoopResult]: For program point L317(lines 317 572) no Hoare annotation was computed. [2020-07-21 01:28:41,666 INFO L268 CegarLoopResult]: For program point L351(lines 351 572) no Hoare annotation was computed. [2020-07-21 01:28:41,666 INFO L268 CegarLoopResult]: For program point L186-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,666 INFO L268 CegarLoopResult]: For program point L153-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,666 INFO L268 CegarLoopResult]: For program point L120-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,666 INFO L268 CegarLoopResult]: For program point L87-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,666 INFO L268 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-07-21 01:28:41,667 INFO L268 CegarLoopResult]: For program point L54-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,667 INFO L268 CegarLoopResult]: For program point L21-2(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,667 INFO L268 CegarLoopResult]: For program point L517(lines 517 572) no Hoare annotation was computed. [2020-07-21 01:28:41,667 INFO L268 CegarLoopResult]: For program point L286(lines 286 572) no Hoare annotation was computed. [2020-07-21 01:28:41,667 INFO L268 CegarLoopResult]: For program point L220(lines 220 572) no Hoare annotation was computed. [2020-07-21 01:28:41,667 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-21 01:28:41,667 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-07-21 01:28:41,667 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-07-21 01:28:41,667 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-07-21 01:28:41,667 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-07-21 01:28:41,667 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-21 01:28:41,667 INFO L268 CegarLoopResult]: For program point L419(lines 419 572) no Hoare annotation was computed. [2020-07-21 01:28:41,667 INFO L268 CegarLoopResult]: For program point L320(lines 320 572) no Hoare annotation was computed. [2020-07-21 01:28:41,668 INFO L268 CegarLoopResult]: For program point L254(lines 254 572) no Hoare annotation was computed. [2020-07-21 01:28:41,668 INFO L268 CegarLoopResult]: For program point L354(lines 354 572) no Hoare annotation was computed. [2020-07-21 01:28:41,668 INFO L268 CegarLoopResult]: For program point L189-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,668 INFO L268 CegarLoopResult]: For program point L156-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,668 INFO L268 CegarLoopResult]: For program point L123-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,668 INFO L268 CegarLoopResult]: For program point L90-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,668 INFO L268 CegarLoopResult]: For program point L57-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,668 INFO L268 CegarLoopResult]: For program point L24-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,668 INFO L268 CegarLoopResult]: For program point L487(lines 487 572) no Hoare annotation was computed. [2020-07-21 01:28:41,668 INFO L268 CegarLoopResult]: For program point L454(lines 454 572) no Hoare annotation was computed. [2020-07-21 01:28:41,668 INFO L268 CegarLoopResult]: For program point L388(lines 388 572) no Hoare annotation was computed. [2020-07-21 01:28:41,668 INFO L268 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2020-07-21 01:28:41,668 INFO L268 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2020-07-21 01:28:41,668 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-07-21 01:28:41,669 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-07-21 01:28:41,669 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-07-21 01:28:41,669 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-21 01:28:41,669 INFO L268 CegarLoopResult]: For program point L554(lines 554 572) no Hoare annotation was computed. [2020-07-21 01:28:41,669 INFO L268 CegarLoopResult]: For program point L323(lines 323 572) no Hoare annotation was computed. [2020-07-21 01:28:41,669 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 20 574) the Hoare annotation is: (let ((.cse4 (<= ~a10~0 |old(~a10~0)|)) (.cse5 (<= |old(~a10~0)| ~a10~0)) (.cse6 (<= ~a19~0 |old(~a19~0)|)) (.cse7 (= ~a1~0 |old(~a1~0)|))) (let ((.cse0 (not (< 7 |old(~a19~0)|))) (.cse1 (and .cse4 .cse5 .cse6 (< 7 ~a19~0) .cse7)) (.cse3 (and .cse4 .cse5 .cse6 .cse7)) (.cse2 (not (<= |old(~a10~0)| 2)))) (and (or .cse0 (not (<= |old(~a19~0)| 9)) .cse1) (or .cse0 .cse2 .cse1) (or (not (<= 4 |old(~a10~0)|)) .cse3 (not (<= |old(~a19~0)| 8))) (or (not (<= |old(~a19~0)| 6)) .cse3) (or .cse3 .cse2)))) [2020-07-21 01:28:41,669 INFO L268 CegarLoopResult]: For program point L357(lines 357 572) no Hoare annotation was computed. [2020-07-21 01:28:41,669 INFO L268 CegarLoopResult]: For program point L291(lines 291 572) no Hoare annotation was computed. [2020-07-21 01:28:41,669 INFO L268 CegarLoopResult]: For program point L225(lines 225 572) no Hoare annotation was computed. [2020-07-21 01:28:41,669 INFO L268 CegarLoopResult]: For program point L192-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,669 INFO L268 CegarLoopResult]: For program point L159-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,669 INFO L268 CegarLoopResult]: For program point L126-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,670 INFO L268 CegarLoopResult]: For program point L93-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,670 INFO L268 CegarLoopResult]: For program point L60-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,670 INFO L268 CegarLoopResult]: For program point L27-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,670 INFO L268 CegarLoopResult]: For program point L523(lines 523 572) no Hoare annotation was computed. [2020-07-21 01:28:41,670 INFO L268 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2020-07-21 01:28:41,670 INFO L268 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-07-21 01:28:41,670 INFO L268 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-07-21 01:28:41,670 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-07-21 01:28:41,670 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-07-21 01:28:41,670 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-07-21 01:28:41,670 INFO L268 CegarLoopResult]: For program point L557(lines 557 572) no Hoare annotation was computed. [2020-07-21 01:28:41,670 INFO L268 CegarLoopResult]: For program point L425(lines 425 572) no Hoare annotation was computed. [2020-07-21 01:28:41,671 INFO L268 CegarLoopResult]: For program point L326(lines 326 572) no Hoare annotation was computed. [2020-07-21 01:28:41,671 INFO L268 CegarLoopResult]: For program point L260(lines 260 572) no Hoare annotation was computed. [2020-07-21 01:28:41,671 INFO L268 CegarLoopResult]: For program point L393(lines 393 572) no Hoare annotation was computed. [2020-07-21 01:28:41,671 INFO L268 CegarLoopResult]: For program point L360(lines 360 572) no Hoare annotation was computed. [2020-07-21 01:28:41,671 INFO L268 CegarLoopResult]: For program point L195-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,671 INFO L268 CegarLoopResult]: For program point L162-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,671 INFO L268 CegarLoopResult]: For program point L129-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,671 INFO L268 CegarLoopResult]: For program point L96-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,671 INFO L268 CegarLoopResult]: For program point L63-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,671 INFO L268 CegarLoopResult]: For program point L30-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,672 INFO L268 CegarLoopResult]: For program point L526(lines 526 572) no Hoare annotation was computed. [2020-07-21 01:28:41,672 INFO L268 CegarLoopResult]: For program point L493(lines 493 572) no Hoare annotation was computed. [2020-07-21 01:28:41,672 INFO L268 CegarLoopResult]: For program point L460(lines 460 572) no Hoare annotation was computed. [2020-07-21 01:28:41,672 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-07-21 01:28:41,672 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-07-21 01:28:41,672 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-07-21 01:28:41,672 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-07-21 01:28:41,672 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-07-21 01:28:41,672 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-21 01:28:41,672 INFO L268 CegarLoopResult]: For program point L329(lines 329 572) no Hoare annotation was computed. [2020-07-21 01:28:41,672 INFO L268 CegarLoopResult]: For program point L296(lines 296 572) no Hoare annotation was computed. [2020-07-21 01:28:41,672 INFO L268 CegarLoopResult]: For program point L231(lines 231 572) no Hoare annotation was computed. [2020-07-21 01:28:41,672 INFO L268 CegarLoopResult]: For program point L198-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,672 INFO L268 CegarLoopResult]: For program point L165-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,673 INFO L268 CegarLoopResult]: For program point L132-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,673 INFO L268 CegarLoopResult]: For program point L99-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,673 INFO L268 CegarLoopResult]: For program point L66-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,673 INFO L268 CegarLoopResult]: For program point L33-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:41,673 INFO L268 CegarLoopResult]: For program point L529(lines 529 572) no Hoare annotation was computed. [2020-07-21 01:28:41,673 INFO L268 CegarLoopResult]: For program point L430(lines 430 572) no Hoare annotation was computed. [2020-07-21 01:28:41,673 INFO L268 CegarLoopResult]: For program point L265(lines 265 572) no Hoare annotation was computed. [2020-07-21 01:28:41,673 INFO L268 CegarLoopResult]: For program point L199(line 199) no Hoare annotation was computed. [2020-07-21 01:28:41,673 INFO L268 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2020-07-21 01:28:41,673 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-07-21 01:28:41,673 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-07-21 01:28:41,673 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-07-21 01:28:41,673 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-21 01:28:41,673 INFO L268 CegarLoopResult]: For program point L563(lines 563 572) no Hoare annotation was computed. [2020-07-21 01:28:41,674 INFO L268 CegarLoopResult]: For program point L398(lines 398 572) no Hoare annotation was computed. [2020-07-21 01:28:41,674 INFO L268 CegarLoopResult]: For program point L365(lines 365 572) no Hoare annotation was computed. [2020-07-21 01:28:41,674 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 01:28:41,674 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a10~0 0) (<= ~a19~0 9) (< 7 ~a19~0) (= 23 ~a1~0)) [2020-07-21 01:28:41,674 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 01:28:41,674 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 01:28:41,674 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 576 592) the Hoare annotation is: (or (not (< 7 |old(~a19~0)|)) (not (= 23 |old(~a1~0)|)) (not (<= |old(~a10~0)| 0)) (not (<= |old(~a19~0)| 9)) (and (<= ~a10~0 |old(~a10~0)|) (<= |old(~a10~0)| ~a10~0) (<= ~a19~0 |old(~a19~0)|) (< 7 ~a19~0) (= ~a1~0 |old(~a1~0)|))) [2020-07-21 01:28:41,674 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 576 592) no Hoare annotation was computed. [2020-07-21 01:28:41,674 INFO L264 CegarLoopResult]: At program point L590(line 590) the Hoare annotation is: (let ((.cse0 (< 7 ~a19~0)) (.cse1 (< 8 |old(~a19~0)|))) (or (and (<= ~a19~0 9) .cse0 .cse1) (not (<= |old(~a10~0)| 0)) (not (< 7 |old(~a19~0)|)) (not (= 23 |old(~a1~0)|)) (and (<= ~a10~0 0) (<= |old(~a10~0)| ~a10~0) (<= ~a19~0 |old(~a19~0)|) .cse0 (= ~a1~0 |old(~a1~0)|)) (and (<= ~a10~0 2) .cse1) (and (<= ~a19~0 8) (<= 4 ~a10~0) .cse1) (and (<= ~a19~0 6) .cse1) (not (<= |old(~a19~0)| 9)))) [2020-07-21 01:28:41,674 INFO L268 CegarLoopResult]: For program point L590-1(line 590) no Hoare annotation was computed. [2020-07-21 01:28:41,674 INFO L268 CegarLoopResult]: For program point L587(line 587) no Hoare annotation was computed. [2020-07-21 01:28:41,675 INFO L264 CegarLoopResult]: At program point L582-2(lines 582 591) the Hoare annotation is: (let ((.cse0 (< 7 ~a19~0)) (.cse1 (< 8 |old(~a19~0)|))) (or (and (<= ~a19~0 9) .cse0 .cse1) (not (<= |old(~a10~0)| 0)) (not (< 7 |old(~a19~0)|)) (not (= 23 |old(~a1~0)|)) (and (<= ~a10~0 0) (<= |old(~a10~0)| ~a10~0) (<= ~a19~0 |old(~a19~0)|) .cse0 (= ~a1~0 |old(~a1~0)|)) (and (<= ~a10~0 2) .cse1) (and (<= ~a19~0 8) (<= 4 ~a10~0) .cse1) (and (<= ~a19~0 6) .cse1) (not (<= |old(~a19~0)| 9)))) [2020-07-21 01:28:41,675 INFO L268 CegarLoopResult]: For program point L582-3(lines 576 592) no Hoare annotation was computed. [2020-07-21 01:28:41,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:28:41 BoogieIcfgContainer [2020-07-21 01:28:41,693 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 01:28:41,695 INFO L168 Benchmark]: Toolchain (without parser) took 49673.63 ms. Allocated memory was 140.0 MB in the beginning and 570.9 MB in the end (delta: 431.0 MB). Free memory was 101.1 MB in the beginning and 252.8 MB in the end (delta: -151.7 MB). Peak memory consumption was 409.4 MB. Max. memory is 7.1 GB. [2020-07-21 01:28:41,696 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 01:28:41,697 INFO L168 Benchmark]: CACSL2BoogieTranslator took 799.22 ms. Allocated memory was 140.0 MB in the beginning and 205.5 MB in the end (delta: 65.5 MB). Free memory was 100.6 MB in the beginning and 171.3 MB in the end (delta: -70.7 MB). Peak memory consumption was 33.5 MB. Max. memory is 7.1 GB. [2020-07-21 01:28:41,698 INFO L168 Benchmark]: Boogie Preprocessor took 129.75 ms. Allocated memory is still 205.5 MB. Free memory was 171.3 MB in the beginning and 166.5 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2020-07-21 01:28:41,698 INFO L168 Benchmark]: RCFGBuilder took 1386.63 ms. Allocated memory was 205.5 MB in the beginning and 239.1 MB in the end (delta: 33.6 MB). Free memory was 166.5 MB in the beginning and 181.9 MB in the end (delta: -15.4 MB). Peak memory consumption was 81.4 MB. Max. memory is 7.1 GB. [2020-07-21 01:28:41,699 INFO L168 Benchmark]: TraceAbstraction took 47350.55 ms. Allocated memory was 239.1 MB in the beginning and 570.9 MB in the end (delta: 331.9 MB). Free memory was 181.9 MB in the beginning and 252.8 MB in the end (delta: -70.9 MB). Peak memory consumption was 391.1 MB. Max. memory is 7.1 GB. [2020-07-21 01:28:41,703 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 140.0 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 799.22 ms. Allocated memory was 140.0 MB in the beginning and 205.5 MB in the end (delta: 65.5 MB). Free memory was 100.6 MB in the beginning and 171.3 MB in the end (delta: -70.7 MB). Peak memory consumption was 33.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.75 ms. Allocated memory is still 205.5 MB. Free memory was 171.3 MB in the beginning and 166.5 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1386.63 ms. Allocated memory was 205.5 MB in the beginning and 239.1 MB in the end (delta: 33.6 MB). Free memory was 166.5 MB in the beginning and 181.9 MB in the end (delta: -15.4 MB). Peak memory consumption was 81.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 47350.55 ms. Allocated memory was 239.1 MB in the beginning and 570.9 MB in the end (delta: 331.9 MB). Free memory was 181.9 MB in the beginning and 252.8 MB in the end (delta: -70.9 MB). Peak memory consumption was 391.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 136]: 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: (((((((((a19 <= 9 && 7 < a19) && 8 < \old(a19)) || !(\old(a10) <= 0)) || !(7 < \old(a19))) || !(23 == \old(a1))) || ((((a10 <= 0 && \old(a10) <= a10) && a19 <= \old(a19)) && 7 < a19) && a1 == \old(a1))) || (a10 <= 2 && 8 < \old(a19))) || ((a19 <= 8 && 4 <= a10) && 8 < \old(a19))) || (a19 <= 6 && 8 < \old(a19))) || !(\old(a19) <= 9) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 45.0s, OverallIterations: 10, TraceHistogramMax: 4, AutomataDifference: 25.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 696 SDtfs, 3177 SDslu, 311 SDs, 0 SdLazy, 7419 SolverSat, 1306 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3774 GetRequests, 3707 SyntacticMatches, 6 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 25.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2664occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 10 MinimizatonAttempts, 1371 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 91 PreInvPairs, 135 NumberOfFragments, 310 HoareAnnotationTreeSize, 91 FomulaSimplifications, 3694 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 7 FomulaSimplificationsInter, 5618 FormulaSimplificationTreeSizeReductionInter, 1.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 14.8s InterpolantComputationTime, 2547 NumberOfCodeBlocks, 1975 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 3496 ConstructedInterpolants, 6 QuantifiedInterpolants, 2235252 SizeOfPredicates, 15 NumberOfNonLiveVariables, 3528 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 14 InterpolantComputations, 6 PerfectInterpolantSequences, 3030/3234 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...