/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_label32.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 22:58:25,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 22:58:25,997 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 22:58:26,015 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 22:58:26,015 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 22:58:26,017 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 22:58:26,019 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 22:58:26,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 22:58:26,033 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 22:58:26,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 22:58:26,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 22:58:26,037 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 22:58:26,037 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 22:58:26,041 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 22:58:26,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 22:58:26,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 22:58:26,045 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 22:58:26,046 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 22:58:26,048 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 22:58:26,052 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 22:58:26,054 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 22:58:26,055 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 22:58:26,059 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 22:58:26,060 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 22:58:26,063 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 22:58:26,074 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 22:58:26,088 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 22:58:26,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 22:58:26,089 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 22:58:26,089 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 22:58:26,090 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 22:58:26,090 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 22:58:26,090 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 22:58:26,090 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 22:58:26,090 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 22:58:26,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 22:58:26,091 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 22:58:26,091 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 22:58:26,091 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 22:58:26,091 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 22:58:26,092 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 22:58:26,092 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 22:58:26,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 22:58:26,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 22:58:26,092 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 22:58:26,093 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 22:58:26,093 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 22:58:26,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 22:58:26,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 22:58:26,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 22:58:26,094 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 22:58:26,094 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 22:58:26,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:58:26,094 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 22:58:26,094 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 22:58:26,095 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 22:58:26,368 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 22:58:26,381 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 22:58:26,384 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 22:58:26,386 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 22:58:26,386 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 22:58:26,387 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label32.c [2020-07-21 22:58:26,445 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66050b298/1b166932f9c54509b68e47e38ab16c06/FLAG087538da6 [2020-07-21 22:58:26,930 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 22:58:26,931 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label32.c [2020-07-21 22:58:26,942 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66050b298/1b166932f9c54509b68e47e38ab16c06/FLAG087538da6 [2020-07-21 22:58:27,263 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66050b298/1b166932f9c54509b68e47e38ab16c06 [2020-07-21 22:58:27,274 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 22:58:27,277 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 22:58:27,278 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 22:58:27,278 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 22:58:27,282 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 22:58:27,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:58:27" (1/1) ... [2020-07-21 22:58:27,285 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9d0d0ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:27, skipping insertion in model container [2020-07-21 22:58:27,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:58:27" (1/1) ... [2020-07-21 22:58:27,293 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 22:58:27,338 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 22:58:27,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:58:27,899 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 22:58:27,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:58:27,998 INFO L208 MainTranslator]: Completed translation [2020-07-21 22:58:27,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:27 WrapperNode [2020-07-21 22:58:27,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 22:58:27,999 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 22:58:28,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 22:58:28,000 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 22:58:28,013 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:27" (1/1) ... [2020-07-21 22:58:28,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:27" (1/1) ... [2020-07-21 22:58:28,032 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:27" (1/1) ... [2020-07-21 22:58:28,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:27" (1/1) ... [2020-07-21 22:58:28,069 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:27" (1/1) ... [2020-07-21 22:58:28,086 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:27" (1/1) ... [2020-07-21 22:58:28,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:27" (1/1) ... [2020-07-21 22:58:28,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 22:58:28,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 22:58:28,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 22:58:28,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 22:58:28,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 22:58:28,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 22:58:28,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 22:58:28,195 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 22:58:28,196 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 22:58:28,196 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 22:58:28,196 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 22:58:28,196 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 22:58:28,197 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 22:58:28,197 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 22:58:28,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 22:58:28,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 22:58:29,421 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 22:58:29,421 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 22:58:29,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:58:29 BoogieIcfgContainer [2020-07-21 22:58:29,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 22:58:29,433 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 22:58:29,434 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 22:58:29,437 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 22:58:29,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:58:27" (1/3) ... [2020-07-21 22:58:29,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54c21e56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:58:29, skipping insertion in model container [2020-07-21 22:58:29,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:27" (2/3) ... [2020-07-21 22:58:29,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54c21e56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:58:29, skipping insertion in model container [2020-07-21 22:58:29,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:58:29" (3/3) ... [2020-07-21 22:58:29,443 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label32.c [2020-07-21 22:58:29,453 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 22:58:29,465 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 22:58:29,480 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 22:58:29,512 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 22:58:29,513 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 22:58:29,513 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 22:58:29,513 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 22:58:29,514 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 22:58:29,514 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 22:58:29,514 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 22:58:29,514 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 22:58:29,540 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-07-21 22:58:29,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-21 22:58:29,551 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:58:29,552 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] [2020-07-21 22:58:29,553 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:58:29,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:58:29,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1877810762, now seen corresponding path program 1 times [2020-07-21 22:58:29,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:58:29,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089938779] [2020-07-21 22:58:29,570 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:58:29,680 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:58:29,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:58:29,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 22:58:29,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:58:29,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:58:29,753 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:58:29,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089938779] [2020-07-21 22:58:29,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:58:29,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 22:58:29,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878918605] [2020-07-21 22:58:29,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 22:58:29,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:58:29,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 22:58:29,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:58:29,778 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2020-07-21 22:58:30,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:58:30,751 INFO L93 Difference]: Finished difference Result 571 states and 989 transitions. [2020-07-21 22:58:30,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 22:58:30,753 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-07-21 22:58:30,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:58:30,769 INFO L225 Difference]: With dead ends: 571 [2020-07-21 22:58:30,769 INFO L226 Difference]: Without dead ends: 294 [2020-07-21 22:58:30,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:58:30,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-07-21 22:58:30,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2020-07-21 22:58:30,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-07-21 22:58:30,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 391 transitions. [2020-07-21 22:58:30,844 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 391 transitions. Word has length 31 [2020-07-21 22:58:30,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:58:30,845 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 391 transitions. [2020-07-21 22:58:30,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 22:58:30,845 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 391 transitions. [2020-07-21 22:58:30,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-07-21 22:58:30,850 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:58:30,850 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:58:31,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:58:31,065 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:58:31,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:58:31,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1943210670, now seen corresponding path program 1 times [2020-07-21 22:58:31,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:58:31,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217324369] [2020-07-21 22:58:31,067 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:58:31,166 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:58:31,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:58:31,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:58:31,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:58:31,202 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:58:31,203 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:58:31,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [217324369] [2020-07-21 22:58:31,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:58:31,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 22:58:31,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008597696] [2020-07-21 22:58:31,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 22:58:31,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:58:31,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 22:58:31,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:58:31,206 INFO L87 Difference]: Start difference. First operand 294 states and 391 transitions. Second operand 3 states. [2020-07-21 22:58:31,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:58:31,889 INFO L93 Difference]: Finished difference Result 725 states and 1001 transitions. [2020-07-21 22:58:31,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 22:58:31,889 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 101 [2020-07-21 22:58:31,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:58:31,897 INFO L225 Difference]: With dead ends: 725 [2020-07-21 22:58:31,897 INFO L226 Difference]: Without dead ends: 437 [2020-07-21 22:58:31,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:58:31,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2020-07-21 22:58:31,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 437. [2020-07-21 22:58:31,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-07-21 22:58:31,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 593 transitions. [2020-07-21 22:58:31,935 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 593 transitions. Word has length 101 [2020-07-21 22:58:31,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:58:31,936 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 593 transitions. [2020-07-21 22:58:31,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 22:58:31,936 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 593 transitions. [2020-07-21 22:58:31,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-07-21 22:58:31,940 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:58:31,940 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:58:32,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:58:32,156 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:58:32,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:58:32,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1649984501, now seen corresponding path program 1 times [2020-07-21 22:58:32,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:58:32,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581923086] [2020-07-21 22:58:32,158 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:58:32,257 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:58:32,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:58:32,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 22:58:32,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:58:32,309 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:58:32,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:58:32,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581923086] [2020-07-21 22:58:32,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:58:32,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 22:58:32,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124527671] [2020-07-21 22:58:32,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 22:58:32,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:58:32,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 22:58:32,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 22:58:32,312 INFO L87 Difference]: Start difference. First operand 437 states and 593 transitions. Second operand 5 states. [2020-07-21 22:58:33,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:58:33,186 INFO L93 Difference]: Finished difference Result 1027 states and 1372 transitions. [2020-07-21 22:58:33,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 22:58:33,191 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-07-21 22:58:33,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:58:33,195 INFO L225 Difference]: With dead ends: 1027 [2020-07-21 22:58:33,196 INFO L226 Difference]: Without dead ends: 596 [2020-07-21 22:58:33,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 104 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 22:58:33,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2020-07-21 22:58:33,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 590. [2020-07-21 22:58:33,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-07-21 22:58:33,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 764 transitions. [2020-07-21 22:58:33,228 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 764 transitions. Word has length 108 [2020-07-21 22:58:33,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:58:33,228 INFO L479 AbstractCegarLoop]: Abstraction has 590 states and 764 transitions. [2020-07-21 22:58:33,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 22:58:33,229 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 764 transitions. [2020-07-21 22:58:33,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-07-21 22:58:33,233 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:58:33,234 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:58:33,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:58:33,447 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:58:33,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:58:33,447 INFO L82 PathProgramCache]: Analyzing trace with hash -2011164487, now seen corresponding path program 1 times [2020-07-21 22:58:33,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:58:33,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [113635738] [2020-07-21 22:58:33,448 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:58:33,533 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:58:33,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:58:33,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 22:58:33,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:58:33,593 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:58:33,594 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:58:33,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [113635738] [2020-07-21 22:58:33,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:58:33,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 22:58:33,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488512246] [2020-07-21 22:58:33,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 22:58:33,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:58:33,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 22:58:33,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 22:58:33,596 INFO L87 Difference]: Start difference. First operand 590 states and 764 transitions. Second operand 5 states. [2020-07-21 22:58:34,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:58:34,512 INFO L93 Difference]: Finished difference Result 1351 states and 1835 transitions. [2020-07-21 22:58:34,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 22:58:34,514 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-07-21 22:58:34,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:58:34,520 INFO L225 Difference]: With dead ends: 1351 [2020-07-21 22:58:34,521 INFO L226 Difference]: Without dead ends: 910 [2020-07-21 22:58:34,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 122 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 22:58:34,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2020-07-21 22:58:34,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 894. [2020-07-21 22:58:34,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 894 states. [2020-07-21 22:58:34,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1093 transitions. [2020-07-21 22:58:34,555 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1093 transitions. Word has length 126 [2020-07-21 22:58:34,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:58:34,555 INFO L479 AbstractCegarLoop]: Abstraction has 894 states and 1093 transitions. [2020-07-21 22:58:34,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 22:58:34,556 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1093 transitions. [2020-07-21 22:58:34,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-07-21 22:58:34,563 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:58:34,563 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 22:58:34,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:58:34,777 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:58:34,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:58:34,778 INFO L82 PathProgramCache]: Analyzing trace with hash -2040836647, now seen corresponding path program 1 times [2020-07-21 22:58:34,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:58:34,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597296702] [2020-07-21 22:58:34,780 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:58:34,883 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:58:34,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:58:34,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 22:58:34,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:58:34,986 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-07-21 22:58:34,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:58:35,124 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-07-21 22:58:35,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597296702] [2020-07-21 22:58:35,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-21 22:58:35,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2020-07-21 22:58:35,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486875668] [2020-07-21 22:58:35,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 22:58:35,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:58:35,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 22:58:35,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 22:58:35,127 INFO L87 Difference]: Start difference. First operand 894 states and 1093 transitions. Second operand 4 states. [2020-07-21 22:58:35,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:58:35,840 INFO L93 Difference]: Finished difference Result 1335 states and 1649 transitions. [2020-07-21 22:58:35,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 22:58:35,842 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 178 [2020-07-21 22:58:35,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:58:35,848 INFO L225 Difference]: With dead ends: 1335 [2020-07-21 22:58:35,849 INFO L226 Difference]: Without dead ends: 1333 [2020-07-21 22:58:35,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 351 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 22:58:35,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2020-07-21 22:58:35,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 1188. [2020-07-21 22:58:35,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1188 states. [2020-07-21 22:58:35,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1487 transitions. [2020-07-21 22:58:35,885 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1487 transitions. Word has length 178 [2020-07-21 22:58:35,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:58:35,886 INFO L479 AbstractCegarLoop]: Abstraction has 1188 states and 1487 transitions. [2020-07-21 22:58:35,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 22:58:35,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1487 transitions. [2020-07-21 22:58:35,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-07-21 22:58:35,893 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:58:35,893 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 22:58:36,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:58:36,109 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:58:36,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:58:36,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1235452698, now seen corresponding path program 1 times [2020-07-21 22:58:36,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:58:36,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966750441] [2020-07-21 22:58:36,112 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:58:36,214 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:58:36,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:58:36,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:58:36,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:58:36,248 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-21 22:58:36,249 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:58:36,308 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 262 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-07-21 22:58:36,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:58:36,394 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:58:36,395 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:58:36,398 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 1] term [2020-07-21 22:58:36,398 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:58:36,572 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 144 proven. 77 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-07-21 22:58:36,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966750441] [2020-07-21 22:58:36,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:58:36,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 22:58:36,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834516069] [2020-07-21 22:58:36,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 22:58:36,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:58:36,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 22:58:36,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 22:58:36,575 INFO L87 Difference]: Start difference. First operand 1188 states and 1487 transitions. Second operand 6 states. [2020-07-21 22:58:37,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:58:37,791 INFO L93 Difference]: Finished difference Result 2567 states and 3333 transitions. [2020-07-21 22:58:37,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 22:58:37,791 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 297 [2020-07-21 22:58:37,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:58:37,801 INFO L225 Difference]: With dead ends: 2567 [2020-07-21 22:58:37,802 INFO L226 Difference]: Without dead ends: 1528 [2020-07-21 22:58:37,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 590 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 22:58:37,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2020-07-21 22:58:37,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1200. [2020-07-21 22:58:37,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1200 states. [2020-07-21 22:58:37,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 1428 transitions. [2020-07-21 22:58:37,864 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 1428 transitions. Word has length 297 [2020-07-21 22:58:37,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:58:37,865 INFO L479 AbstractCegarLoop]: Abstraction has 1200 states and 1428 transitions. [2020-07-21 22:58:37,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 22:58:37,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 1428 transitions. [2020-07-21 22:58:37,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-07-21 22:58:37,871 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:58:37,872 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 22:58:38,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:58:38,087 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:58:38,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:58:38,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1849632851, now seen corresponding path program 1 times [2020-07-21 22:58:38,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:58:38,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011272852] [2020-07-21 22:58:38,089 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:58:38,206 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:58:38,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:58:38,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 20 conjunts are in the unsatisfiable core [2020-07-21 22:58:38,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:58:38,417 INFO L501 QuantifierPusher]: Distributing 6 conjuncts over 3 disjuncts [2020-07-21 22:58:38,418 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 22:58:38,419 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 22:58:38,422 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 22:58:38,424 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 22:58:38,426 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 22:58:38,427 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 22:58:38,428 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 22:58:38,718 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 278 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-07-21 22:58:38,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:58:38,987 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 2 conjuncts [2020-07-21 22:58:38,988 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 22:58:39,280 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 151 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-07-21 22:58:39,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011272852] [2020-07-21 22:58:39,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:58:39,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2020-07-21 22:58:39,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568706848] [2020-07-21 22:58:39,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-21 22:58:39,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:58:39,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-21 22:58:39,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-07-21 22:58:39,283 INFO L87 Difference]: Start difference. First operand 1200 states and 1428 transitions. Second operand 15 states. [2020-07-21 22:58:40,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:58:40,896 INFO L93 Difference]: Finished difference Result 2457 states and 2990 transitions. [2020-07-21 22:58:40,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-21 22:58:40,897 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 306 [2020-07-21 22:58:40,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:58:40,905 INFO L225 Difference]: With dead ends: 2457 [2020-07-21 22:58:40,905 INFO L226 Difference]: Without dead ends: 1347 [2020-07-21 22:58:40,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 621 GetRequests, 601 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-07-21 22:58:40,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1347 states. [2020-07-21 22:58:40,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1347 to 1202. [2020-07-21 22:58:40,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1202 states. [2020-07-21 22:58:40,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 1426 transitions. [2020-07-21 22:58:40,952 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 1426 transitions. Word has length 306 [2020-07-21 22:58:40,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:58:40,952 INFO L479 AbstractCegarLoop]: Abstraction has 1202 states and 1426 transitions. [2020-07-21 22:58:40,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-21 22:58:40,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 1426 transitions. [2020-07-21 22:58:40,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-07-21 22:58:40,960 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:58:40,960 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 22:58:41,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:58:41,176 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:58:41,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:58:41,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1017830091, now seen corresponding path program 1 times [2020-07-21 22:58:41,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:58:41,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243382017] [2020-07-21 22:58:41,178 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:58:41,313 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:58:41,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:58:41,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-21 22:58:41,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:58:41,340 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:58:41,342 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 22:58:41,345 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:58:41,351 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 22:58:41,352 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 22:58:41,358 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 22:58:41,359 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 22:58:41,361 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 22:58:41,361 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 22:58:41,363 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 22:58:41,365 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 22:58:41,366 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 22:58:41,367 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 22:58:41,369 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 22:58:41,369 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 22:58:41,371 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 22:58:41,373 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 22:58:41,374 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 22:58:41,376 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 22:58:41,377 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 22:58:41,378 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 22:58:41,380 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 22:58:41,381 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 22:58:41,382 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 22:58:41,383 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 22:58:41,385 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 22:58:53,830 WARN L193 SmtUtils]: Spent 12.37 s on a formula simplification. DAG size of input: 64 DAG size of output: 34 [2020-07-21 22:58:53,865 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 22:58:53,973 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-21 22:58:53,975 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:58:53,978 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:58:54,002 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:58:54,161 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-07-21 22:58:54,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:58:54,260 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:58:54,262 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:58:54,263 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:58:54,265 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:58:54,287 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:58:54,290 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:58:54,386 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:58:54,388 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:58:54,391 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:58:54,393 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:58:54,394 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:58:54,395 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:58:54,397 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 22:58:54,398 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:58:54,399 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:58:54,399 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:58:54,401 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:58:54,409 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:58:54,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243382017] [2020-07-21 22:58:54,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 22:58:54,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-07-21 22:58:54,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310653758] [2020-07-21 22:58:54,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 22:58:54,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:58:54,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 22:58:54,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-07-21 22:58:54,520 INFO L87 Difference]: Start difference. First operand 1202 states and 1426 transitions. Second operand 8 states. [2020-07-21 23:02:00,905 WARN L193 SmtUtils]: Spent 12.45 s on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2020-07-21 23:02:27,846 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 27 [2020-07-21 23:02:38,211 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 25 [2020-07-21 23:03:30,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:03:30,545 INFO L93 Difference]: Finished difference Result 3596 states and 4506 transitions. [2020-07-21 23:03:30,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-21 23:03:30,551 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 342 [2020-07-21 23:03:30,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:03:30,564 INFO L225 Difference]: With dead ends: 3596 [2020-07-21 23:03:30,564 INFO L226 Difference]: Without dead ends: 2543 [2020-07-21 23:03:30,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 553 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 25.6s TimeCoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2020-07-21 23:03:30,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2543 states. [2020-07-21 23:03:30,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2543 to 2531. [2020-07-21 23:03:30,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2531 states. [2020-07-21 23:03:30,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2531 states to 2531 states and 3051 transitions. [2020-07-21 23:03:30,639 INFO L78 Accepts]: Start accepts. Automaton has 2531 states and 3051 transitions. Word has length 342 [2020-07-21 23:03:30,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:03:30,640 INFO L479 AbstractCegarLoop]: Abstraction has 2531 states and 3051 transitions. [2020-07-21 23:03:30,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 23:03:30,641 INFO L276 IsEmpty]: Start isEmpty. Operand 2531 states and 3051 transitions. [2020-07-21 23:03:30,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-07-21 23:03:30,652 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:03:30,652 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 23:03:30,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:03:30,866 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:03:30,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:03:30,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1612364689, now seen corresponding path program 1 times [2020-07-21 23:03:30,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:03:30,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033463585] [2020-07-21 23:03:30,869 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:03:31,052 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:03:31,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:03:31,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 23:03:31,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:03:31,192 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2020-07-21 23:03:31,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:03:31,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2033463585] [2020-07-21 23:03:31,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:03:31,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:03:31,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111019332] [2020-07-21 23:03:31,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:03:31,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:03:31,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:03:31,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:03:31,195 INFO L87 Difference]: Start difference. First operand 2531 states and 3051 transitions. Second operand 3 states. [2020-07-21 23:03:33,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:03:33,254 INFO L93 Difference]: Finished difference Result 5491 states and 6701 transitions. [2020-07-21 23:03:33,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:03:33,263 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 356 [2020-07-21 23:03:33,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:03:33,278 INFO L225 Difference]: With dead ends: 5491 [2020-07-21 23:03:33,278 INFO L226 Difference]: Without dead ends: 3109 [2020-07-21 23:03:33,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:03:33,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3109 states. [2020-07-21 23:03:33,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3109 to 2964. [2020-07-21 23:03:33,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2964 states. [2020-07-21 23:03:33,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2964 states to 2964 states and 3557 transitions. [2020-07-21 23:03:33,375 INFO L78 Accepts]: Start accepts. Automaton has 2964 states and 3557 transitions. Word has length 356 [2020-07-21 23:03:33,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:03:33,376 INFO L479 AbstractCegarLoop]: Abstraction has 2964 states and 3557 transitions. [2020-07-21 23:03:33,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:03:33,376 INFO L276 IsEmpty]: Start isEmpty. Operand 2964 states and 3557 transitions. [2020-07-21 23:03:33,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2020-07-21 23:03:33,390 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:03:33,391 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 23:03:33,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:03:33,606 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:03:33,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:03:33,606 INFO L82 PathProgramCache]: Analyzing trace with hash 2056378726, now seen corresponding path program 1 times [2020-07-21 23:03:33,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:03:33,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660032077] [2020-07-21 23:03:33,607 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:03:33,796 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:03:33,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:03:33,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 23:03:33,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:03:33,889 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2020-07-21 23:03:33,889 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:03:33,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660032077] [2020-07-21 23:03:33,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:03:33,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:03:33,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339961523] [2020-07-21 23:03:33,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:03:33,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:03:33,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:03:33,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:03:33,892 INFO L87 Difference]: Start difference. First operand 2964 states and 3557 transitions. Second operand 3 states. [2020-07-21 23:03:35,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:03:35,829 INFO L93 Difference]: Finished difference Result 6063 states and 7282 transitions. [2020-07-21 23:03:35,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:03:35,832 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 361 [2020-07-21 23:03:35,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:03:35,833 INFO L225 Difference]: With dead ends: 6063 [2020-07-21 23:03:35,833 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 23:03:35,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:03:35,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 23:03:35,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 23:03:35,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 23:03:35,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 23:03:35,846 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 361 [2020-07-21 23:03:35,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:03:35,846 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 23:03:35,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:03:35,846 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 23:03:35,846 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 23:03:36,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:03:36,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 23:03:36,928 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 30 [2020-07-21 23:03:38,388 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 168 DAG size of output: 39 [2020-07-21 23:03:38,568 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 30 [2020-07-21 23:03:39,506 WARN L193 SmtUtils]: Spent 935.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 35 [2020-07-21 23:03:40,431 WARN L193 SmtUtils]: Spent 921.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 35 [2020-07-21 23:03:40,436 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 23:03:40,436 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (or (= 1 ~a10~0) (not (= 1 |old(~a10~0)|)) (not (= 0 ~a12~0)) (not (= 14 ~a4~0)) (not (= 8 |old(~a19~0)|))) (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 23:03:40,436 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 23:03:40,436 INFO L268 CegarLoopResult]: For program point L465(lines 465 572) no Hoare annotation was computed. [2020-07-21 23:03:40,436 INFO L268 CegarLoopResult]: For program point L201-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,437 INFO L268 CegarLoopResult]: For program point L168-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,437 INFO L268 CegarLoopResult]: For program point L135-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,437 INFO L268 CegarLoopResult]: For program point L102-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,437 INFO L268 CegarLoopResult]: For program point L69-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,437 INFO L268 CegarLoopResult]: For program point L36-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,437 INFO L268 CegarLoopResult]: For program point L499(lines 499 572) no Hoare annotation was computed. [2020-07-21 23:03:40,437 INFO L268 CegarLoopResult]: For program point L301(lines 301 572) no Hoare annotation was computed. [2020-07-21 23:03:40,437 INFO L268 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2020-07-21 23:03:40,437 INFO L268 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2020-07-21 23:03:40,437 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-07-21 23:03:40,437 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-07-21 23:03:40,437 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-07-21 23:03:40,437 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-07-21 23:03:40,438 INFO L268 CegarLoopResult]: For program point L335(lines 335 572) no Hoare annotation was computed. [2020-07-21 23:03:40,438 INFO L268 CegarLoopResult]: For program point L236(lines 236 572) no Hoare annotation was computed. [2020-07-21 23:03:40,438 INFO L268 CegarLoopResult]: For program point L534(lines 534 572) no Hoare annotation was computed. [2020-07-21 23:03:40,438 INFO L268 CegarLoopResult]: For program point L171-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,438 INFO L268 CegarLoopResult]: For program point L138-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,438 INFO L268 CegarLoopResult]: For program point L105-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,438 INFO L268 CegarLoopResult]: For program point L72-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,438 INFO L268 CegarLoopResult]: For program point L39-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,438 INFO L268 CegarLoopResult]: For program point L436(lines 436 572) no Hoare annotation was computed. [2020-07-21 23:03:40,439 INFO L268 CegarLoopResult]: For program point L403(lines 403 572) no Hoare annotation was computed. [2020-07-21 23:03:40,439 INFO L268 CegarLoopResult]: For program point L370(lines 370 572) no Hoare annotation was computed. [2020-07-21 23:03:40,439 INFO L268 CegarLoopResult]: For program point L271(lines 271 572) no Hoare annotation was computed. [2020-07-21 23:03:40,439 INFO L268 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2020-07-21 23:03:40,439 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-07-21 23:03:40,439 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-07-21 23:03:40,439 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-07-21 23:03:40,439 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-07-21 23:03:40,439 INFO L268 CegarLoopResult]: For program point L569(lines 569 572) no Hoare annotation was computed. [2020-07-21 23:03:40,439 INFO L268 CegarLoopResult]: For program point L239(lines 239 572) no Hoare annotation was computed. [2020-07-21 23:03:40,439 INFO L268 CegarLoopResult]: For program point L504(lines 504 572) no Hoare annotation was computed. [2020-07-21 23:03:40,439 INFO L268 CegarLoopResult]: For program point L471(lines 471 572) no Hoare annotation was computed. [2020-07-21 23:03:40,440 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 79) no Hoare annotation was computed. [2020-07-21 23:03:40,440 INFO L268 CegarLoopResult]: For program point L306(lines 306 572) no Hoare annotation was computed. [2020-07-21 23:03:40,440 INFO L268 CegarLoopResult]: For program point L174-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,440 INFO L268 CegarLoopResult]: For program point L141-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,440 INFO L268 CegarLoopResult]: For program point L108-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,440 INFO L268 CegarLoopResult]: For program point L75-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,440 INFO L268 CegarLoopResult]: For program point L42-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,440 INFO L268 CegarLoopResult]: For program point L340(lines 340 572) no Hoare annotation was computed. [2020-07-21 23:03:40,440 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-21 23:03:40,440 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-07-21 23:03:40,440 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-07-21 23:03:40,441 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-07-21 23:03:40,441 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-07-21 23:03:40,441 INFO L268 CegarLoopResult]: For program point L540(lines 540 572) no Hoare annotation was computed. [2020-07-21 23:03:40,441 INFO L268 CegarLoopResult]: For program point L408(lines 408 572) no Hoare annotation was computed. [2020-07-21 23:03:40,441 INFO L268 CegarLoopResult]: For program point L375(lines 375 572) no Hoare annotation was computed. [2020-07-21 23:03:40,441 INFO L268 CegarLoopResult]: For program point L210(lines 210 572) no Hoare annotation was computed. [2020-07-21 23:03:40,441 INFO L268 CegarLoopResult]: For program point L177-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,441 INFO L268 CegarLoopResult]: For program point L144-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,442 INFO L268 CegarLoopResult]: For program point L111-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,442 INFO L268 CegarLoopResult]: For program point L78-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,442 INFO L268 CegarLoopResult]: For program point L45-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,442 INFO L268 CegarLoopResult]: For program point L442(lines 442 572) no Hoare annotation was computed. [2020-07-21 23:03:40,442 INFO L268 CegarLoopResult]: For program point L277(lines 277 572) no Hoare annotation was computed. [2020-07-21 23:03:40,442 INFO L268 CegarLoopResult]: For program point L244(lines 244 572) no Hoare annotation was computed. [2020-07-21 23:03:40,442 INFO L268 CegarLoopResult]: For program point L178(line 178) no Hoare annotation was computed. [2020-07-21 23:03:40,442 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-07-21 23:03:40,443 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-07-21 23:03:40,443 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-07-21 23:03:40,443 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-21 23:03:40,443 INFO L268 CegarLoopResult]: For program point L509(lines 509 572) no Hoare annotation was computed. [2020-07-21 23:03:40,443 INFO L268 CegarLoopResult]: For program point L476(lines 476 572) no Hoare annotation was computed. [2020-07-21 23:03:40,443 INFO L268 CegarLoopResult]: For program point L378(lines 378 572) no Hoare annotation was computed. [2020-07-21 23:03:40,443 INFO L268 CegarLoopResult]: For program point L345(lines 345 572) no Hoare annotation was computed. [2020-07-21 23:03:40,443 INFO L268 CegarLoopResult]: For program point L312(lines 312 572) no Hoare annotation was computed. [2020-07-21 23:03:40,443 INFO L268 CegarLoopResult]: For program point L180-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,444 INFO L268 CegarLoopResult]: For program point L147-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,444 INFO L268 CegarLoopResult]: For program point L114-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,444 INFO L268 CegarLoopResult]: For program point L81-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,444 INFO L268 CegarLoopResult]: For program point L48-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,444 INFO L268 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2020-07-21 23:03:40,444 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-07-21 23:03:40,444 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-21 23:03:40,444 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-07-21 23:03:40,445 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-07-21 23:03:40,445 INFO L268 CegarLoopResult]: For program point L545(lines 545 572) no Hoare annotation was computed. [2020-07-21 23:03:40,445 INFO L268 CegarLoopResult]: For program point L215(lines 215 572) no Hoare annotation was computed. [2020-07-21 23:03:40,445 INFO L268 CegarLoopResult]: For program point L414(lines 414 572) no Hoare annotation was computed. [2020-07-21 23:03:40,445 INFO L268 CegarLoopResult]: For program point L249(lines 249 572) no Hoare annotation was computed. [2020-07-21 23:03:40,445 INFO L268 CegarLoopResult]: For program point L183-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,445 INFO L268 CegarLoopResult]: For program point L150-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,445 INFO L268 CegarLoopResult]: For program point L117-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,445 INFO L268 CegarLoopResult]: For program point L84-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,446 INFO L268 CegarLoopResult]: For program point L51-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,446 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,446 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,446 INFO L268 CegarLoopResult]: For program point L514(lines 514 572) no Hoare annotation was computed. [2020-07-21 23:03:40,446 INFO L268 CegarLoopResult]: For program point L481(lines 481 572) no Hoare annotation was computed. [2020-07-21 23:03:40,446 INFO L268 CegarLoopResult]: For program point L448(lines 448 572) no Hoare annotation was computed. [2020-07-21 23:03:40,446 INFO L268 CegarLoopResult]: For program point L283(lines 283 572) no Hoare annotation was computed. [2020-07-21 23:03:40,446 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-07-21 23:03:40,447 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-07-21 23:03:40,447 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-07-21 23:03:40,447 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-07-21 23:03:40,447 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-07-21 23:03:40,447 INFO L268 CegarLoopResult]: For program point L548(lines 548 572) no Hoare annotation was computed. [2020-07-21 23:03:40,447 INFO L268 CegarLoopResult]: For program point L383(lines 383 572) no Hoare annotation was computed. [2020-07-21 23:03:40,447 INFO L268 CegarLoopResult]: For program point L317(lines 317 572) no Hoare annotation was computed. [2020-07-21 23:03:40,447 INFO L268 CegarLoopResult]: For program point L351(lines 351 572) no Hoare annotation was computed. [2020-07-21 23:03:40,447 INFO L268 CegarLoopResult]: For program point L186-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,447 INFO L268 CegarLoopResult]: For program point L153-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,447 INFO L268 CegarLoopResult]: For program point L120-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,448 INFO L268 CegarLoopResult]: For program point L87-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,448 INFO L268 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-07-21 23:03:40,448 INFO L268 CegarLoopResult]: For program point L54-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,448 INFO L268 CegarLoopResult]: For program point L21-2(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,448 INFO L268 CegarLoopResult]: For program point L517(lines 517 572) no Hoare annotation was computed. [2020-07-21 23:03:40,448 INFO L268 CegarLoopResult]: For program point L286(lines 286 572) no Hoare annotation was computed. [2020-07-21 23:03:40,448 INFO L268 CegarLoopResult]: For program point L220(lines 220 572) no Hoare annotation was computed. [2020-07-21 23:03:40,449 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-21 23:03:40,449 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-07-21 23:03:40,449 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-07-21 23:03:40,449 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-07-21 23:03:40,449 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-07-21 23:03:40,449 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-21 23:03:40,449 INFO L268 CegarLoopResult]: For program point L419(lines 419 572) no Hoare annotation was computed. [2020-07-21 23:03:40,449 INFO L268 CegarLoopResult]: For program point L320(lines 320 572) no Hoare annotation was computed. [2020-07-21 23:03:40,450 INFO L268 CegarLoopResult]: For program point L254(lines 254 572) no Hoare annotation was computed. [2020-07-21 23:03:40,450 INFO L268 CegarLoopResult]: For program point L354(lines 354 572) no Hoare annotation was computed. [2020-07-21 23:03:40,450 INFO L268 CegarLoopResult]: For program point L189-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,450 INFO L268 CegarLoopResult]: For program point L156-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,450 INFO L268 CegarLoopResult]: For program point L123-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,450 INFO L268 CegarLoopResult]: For program point L90-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,450 INFO L268 CegarLoopResult]: For program point L57-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,450 INFO L268 CegarLoopResult]: For program point L24-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,450 INFO L268 CegarLoopResult]: For program point L487(lines 487 572) no Hoare annotation was computed. [2020-07-21 23:03:40,450 INFO L268 CegarLoopResult]: For program point L454(lines 454 572) no Hoare annotation was computed. [2020-07-21 23:03:40,450 INFO L268 CegarLoopResult]: For program point L388(lines 388 572) no Hoare annotation was computed. [2020-07-21 23:03:40,450 INFO L268 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2020-07-21 23:03:40,450 INFO L268 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2020-07-21 23:03:40,450 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-07-21 23:03:40,451 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-07-21 23:03:40,451 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-07-21 23:03:40,451 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-21 23:03:40,451 INFO L268 CegarLoopResult]: For program point L554(lines 554 572) no Hoare annotation was computed. [2020-07-21 23:03:40,451 INFO L268 CegarLoopResult]: For program point L323(lines 323 572) no Hoare annotation was computed. [2020-07-21 23:03:40,451 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 20 574) the Hoare annotation is: (let ((.cse0 (not (= 0 ~a12~0))) (.cse1 (not (= 14 ~a4~0))) (.cse3 (not (<= |old(~a19~0)| 9))) (.cse2 (and (= ~a10~0 |old(~a10~0)|) (= ~a19~0 |old(~a19~0)|) (= ~a1~0 |old(~a1~0)|)))) (and (or (not (<= |old(~a19~0)| 6)) .cse0 .cse1 .cse2) (or (not (<= 4 |old(~a10~0)|)) .cse0 .cse1 .cse3 .cse2) (or .cse0 .cse1 .cse2 (not (<= |old(~a10~0)| 2))) (or (not (< 7 |old(~a19~0)|)) .cse0 .cse1 .cse3 .cse2))) [2020-07-21 23:03:40,451 INFO L268 CegarLoopResult]: For program point L357(lines 357 572) no Hoare annotation was computed. [2020-07-21 23:03:40,451 INFO L268 CegarLoopResult]: For program point L291(lines 291 572) no Hoare annotation was computed. [2020-07-21 23:03:40,451 INFO L268 CegarLoopResult]: For program point L225(lines 225 572) no Hoare annotation was computed. [2020-07-21 23:03:40,451 INFO L268 CegarLoopResult]: For program point L192-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,451 INFO L268 CegarLoopResult]: For program point L159-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,452 INFO L268 CegarLoopResult]: For program point L126-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,452 INFO L268 CegarLoopResult]: For program point L93-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,452 INFO L268 CegarLoopResult]: For program point L60-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,452 INFO L268 CegarLoopResult]: For program point L27-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,452 INFO L268 CegarLoopResult]: For program point L523(lines 523 572) no Hoare annotation was computed. [2020-07-21 23:03:40,452 INFO L268 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2020-07-21 23:03:40,452 INFO L268 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-07-21 23:03:40,452 INFO L268 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-07-21 23:03:40,452 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-07-21 23:03:40,452 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-07-21 23:03:40,452 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-07-21 23:03:40,452 INFO L268 CegarLoopResult]: For program point L557(lines 557 572) no Hoare annotation was computed. [2020-07-21 23:03:40,452 INFO L268 CegarLoopResult]: For program point L425(lines 425 572) no Hoare annotation was computed. [2020-07-21 23:03:40,452 INFO L268 CegarLoopResult]: For program point L326(lines 326 572) no Hoare annotation was computed. [2020-07-21 23:03:40,453 INFO L268 CegarLoopResult]: For program point L260(lines 260 572) no Hoare annotation was computed. [2020-07-21 23:03:40,453 INFO L268 CegarLoopResult]: For program point L393(lines 393 572) no Hoare annotation was computed. [2020-07-21 23:03:40,453 INFO L268 CegarLoopResult]: For program point L360(lines 360 572) no Hoare annotation was computed. [2020-07-21 23:03:40,453 INFO L268 CegarLoopResult]: For program point L195-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,453 INFO L268 CegarLoopResult]: For program point L162-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,453 INFO L268 CegarLoopResult]: For program point L129-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,453 INFO L268 CegarLoopResult]: For program point L96-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,453 INFO L268 CegarLoopResult]: For program point L63-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,453 INFO L268 CegarLoopResult]: For program point L30-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,453 INFO L268 CegarLoopResult]: For program point L526(lines 526 572) no Hoare annotation was computed. [2020-07-21 23:03:40,453 INFO L268 CegarLoopResult]: For program point L493(lines 493 572) no Hoare annotation was computed. [2020-07-21 23:03:40,453 INFO L268 CegarLoopResult]: For program point L460(lines 460 572) no Hoare annotation was computed. [2020-07-21 23:03:40,453 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-07-21 23:03:40,453 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-07-21 23:03:40,454 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-07-21 23:03:40,454 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-07-21 23:03:40,454 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-07-21 23:03:40,454 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-21 23:03:40,454 INFO L268 CegarLoopResult]: For program point L329(lines 329 572) no Hoare annotation was computed. [2020-07-21 23:03:40,454 INFO L268 CegarLoopResult]: For program point L296(lines 296 572) no Hoare annotation was computed. [2020-07-21 23:03:40,454 INFO L268 CegarLoopResult]: For program point L231(lines 231 572) no Hoare annotation was computed. [2020-07-21 23:03:40,454 INFO L268 CegarLoopResult]: For program point L198-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,454 INFO L268 CegarLoopResult]: For program point L165-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,454 INFO L268 CegarLoopResult]: For program point L132-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,454 INFO L268 CegarLoopResult]: For program point L99-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,454 INFO L268 CegarLoopResult]: For program point L66-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,454 INFO L268 CegarLoopResult]: For program point L33-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:03:40,454 INFO L268 CegarLoopResult]: For program point L529(lines 529 572) no Hoare annotation was computed. [2020-07-21 23:03:40,455 INFO L268 CegarLoopResult]: For program point L430(lines 430 572) no Hoare annotation was computed. [2020-07-21 23:03:40,455 INFO L268 CegarLoopResult]: For program point L265(lines 265 572) no Hoare annotation was computed. [2020-07-21 23:03:40,455 INFO L268 CegarLoopResult]: For program point L199(line 199) no Hoare annotation was computed. [2020-07-21 23:03:40,455 INFO L268 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2020-07-21 23:03:40,455 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-07-21 23:03:40,455 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-07-21 23:03:40,455 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-07-21 23:03:40,455 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-21 23:03:40,455 INFO L268 CegarLoopResult]: For program point L563(lines 563 572) no Hoare annotation was computed. [2020-07-21 23:03:40,455 INFO L268 CegarLoopResult]: For program point L398(lines 398 572) no Hoare annotation was computed. [2020-07-21 23:03:40,455 INFO L268 CegarLoopResult]: For program point L365(lines 365 572) no Hoare annotation was computed. [2020-07-21 23:03:40,455 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 23:03:40,455 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a10~0 0) (= 14 ~a4~0) (<= ~a19~0 9) (= 0 ~a12~0) (< 7 ~a19~0) (= 23 ~a1~0)) [2020-07-21 23:03:40,455 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 23:03:40,456 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 23:03:40,456 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 (= 0 ~a12~0)) (not (= 14 ~a4~0)) (not (<= |old(~a19~0)| 9)) (and (= ~a10~0 |old(~a10~0)|) (= ~a19~0 |old(~a19~0)|) (= ~a1~0 |old(~a1~0)|))) [2020-07-21 23:03:40,456 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 576 592) no Hoare annotation was computed. [2020-07-21 23:03:40,456 INFO L264 CegarLoopResult]: At program point L590(line 590) the Hoare annotation is: (let ((.cse0 (<= ~a19~0 9))) (or (<= ~a19~0 6) (not (<= |old(~a10~0)| 0)) (and .cse0 (<= 4 ~a10~0)) (not (< 7 |old(~a19~0)|)) (not (= 23 |old(~a1~0)|)) (not (= 0 ~a12~0)) (<= ~a10~0 2) (and .cse0 (< 7 ~a19~0)) (not (= 14 ~a4~0)) (not (<= |old(~a19~0)| 9)))) [2020-07-21 23:03:40,456 INFO L268 CegarLoopResult]: For program point L590-1(line 590) no Hoare annotation was computed. [2020-07-21 23:03:40,456 INFO L268 CegarLoopResult]: For program point L587(line 587) no Hoare annotation was computed. [2020-07-21 23:03:40,456 INFO L264 CegarLoopResult]: At program point L582-2(lines 582 591) the Hoare annotation is: (let ((.cse0 (<= ~a19~0 9))) (or (<= ~a19~0 6) (not (<= |old(~a10~0)| 0)) (and .cse0 (<= 4 ~a10~0)) (not (< 7 |old(~a19~0)|)) (not (= 23 |old(~a1~0)|)) (not (= 0 ~a12~0)) (<= ~a10~0 2) (and .cse0 (< 7 ~a19~0)) (not (= 14 ~a4~0)) (not (<= |old(~a19~0)| 9)))) [2020-07-21 23:03:40,456 INFO L268 CegarLoopResult]: For program point L582-3(lines 576 592) no Hoare annotation was computed. [2020-07-21 23:03:40,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:03:40 BoogieIcfgContainer [2020-07-21 23:03:40,476 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 23:03:40,478 INFO L168 Benchmark]: Toolchain (without parser) took 313202.62 ms. Allocated memory was 145.2 MB in the beginning and 537.4 MB in the end (delta: 392.2 MB). Free memory was 101.1 MB in the beginning and 114.5 MB in the end (delta: -13.3 MB). Peak memory consumption was 378.9 MB. Max. memory is 7.1 GB. [2020-07-21 23:03:40,479 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 145.2 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-21 23:03:40,480 INFO L168 Benchmark]: CACSL2BoogieTranslator took 721.07 ms. Allocated memory was 145.2 MB in the beginning and 205.0 MB in the end (delta: 59.8 MB). Free memory was 100.7 MB in the beginning and 171.1 MB in the end (delta: -70.4 MB). Peak memory consumption was 30.3 MB. Max. memory is 7.1 GB. [2020-07-21 23:03:40,480 INFO L168 Benchmark]: Boogie Preprocessor took 102.81 ms. Allocated memory is still 205.0 MB. Free memory was 171.1 MB in the beginning and 166.1 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. [2020-07-21 23:03:40,481 INFO L168 Benchmark]: RCFGBuilder took 1329.55 ms. Allocated memory was 205.0 MB in the beginning and 238.6 MB in the end (delta: 33.6 MB). Free memory was 166.1 MB in the beginning and 182.4 MB in the end (delta: -16.3 MB). Peak memory consumption was 82.1 MB. Max. memory is 7.1 GB. [2020-07-21 23:03:40,482 INFO L168 Benchmark]: TraceAbstraction took 311042.79 ms. Allocated memory was 238.6 MB in the beginning and 537.4 MB in the end (delta: 298.8 MB). Free memory was 180.9 MB in the beginning and 114.5 MB in the end (delta: 66.5 MB). Peak memory consumption was 365.3 MB. Max. memory is 7.1 GB. [2020-07-21 23:03:40,485 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 145.2 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 721.07 ms. Allocated memory was 145.2 MB in the beginning and 205.0 MB in the end (delta: 59.8 MB). Free memory was 100.7 MB in the beginning and 171.1 MB in the end (delta: -70.4 MB). Peak memory consumption was 30.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 102.81 ms. Allocated memory is still 205.0 MB. Free memory was 171.1 MB in the beginning and 166.1 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1329.55 ms. Allocated memory was 205.0 MB in the beginning and 238.6 MB in the end (delta: 33.6 MB). Free memory was 166.1 MB in the beginning and 182.4 MB in the end (delta: -16.3 MB). Peak memory consumption was 82.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 311042.79 ms. Allocated memory was 238.6 MB in the beginning and 537.4 MB in the end (delta: 298.8 MB). Free memory was 180.9 MB in the beginning and 114.5 MB in the end (delta: 66.5 MB). Peak memory consumption was 365.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 79]: 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 <= 6 || !(\old(a10) <= 0)) || (a19 <= 9 && 4 <= a10)) || !(7 < \old(a19))) || !(23 == \old(a1))) || !(0 == a12)) || a10 <= 2) || (a19 <= 9 && 7 < a19)) || !(14 == a4)) || !(\old(a19) <= 9) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 306.5s, OverallIterations: 10, TraceHistogramMax: 4, AutomataDifference: 287.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 754 SDtfs, 2997 SDslu, 306 SDs, 0 SdLazy, 6947 SolverSat, 1305 SolverUnsat, 111 SolverUnknown, 0 SolverNotchecked, 265.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3232 GetRequests, 3162 SyntacticMatches, 4 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 26.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2964occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 10 MinimizatonAttempts, 797 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 94 PreInvPairs, 140 NumberOfFragments, 283 HoareAnnotationTreeSize, 94 FomulaSimplifications, 5674 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 7 FomulaSimplificationsInter, 6567 FormulaSimplificationTreeSizeReductionInter, 3.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 15.3s InterpolantComputationTime, 2206 NumberOfCodeBlocks, 1796 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 2974 ConstructedInterpolants, 6 QuantifiedInterpolants, 3050500 SizeOfPredicates, 19 NumberOfNonLiveVariables, 3305 ConjunctsInSsa, 81 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 2337/2539 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...