/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 14:09:51,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 14:09:51,519 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 14:09:51,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 14:09:51,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 14:09:51,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 14:09:51,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 14:09:51,537 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 14:09:51,539 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 14:09:51,540 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 14:09:51,541 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 14:09:51,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 14:09:51,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 14:09:51,543 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 14:09:51,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 14:09:51,546 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 14:09:51,546 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 14:09:51,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 14:09:51,549 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 14:09:51,551 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 14:09:51,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 14:09:51,553 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 14:09:51,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 14:09:51,555 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 14:09:51,558 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 14:09:51,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 14:09:51,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 14:09:51,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 14:09:51,568 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 [2020-07-20 14:09:51,586 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 14:09:51,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 14:09:51,587 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 14:09:51,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 14:09:51,588 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 14:09:51,588 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 14:09:51,588 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 14:09:51,589 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 14:09:51,589 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 14:09:51,589 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 14:09:51,589 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 14:09:51,589 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 14:09:51,589 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 14:09:51,590 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 14:09:51,590 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 14:09:51,590 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 14:09:51,590 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 14:09:51,590 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 14:09:51,591 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 14:09:51,591 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 14:09:51,591 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 14:09:51,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 14:09:51,592 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 14:09:51,592 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 14:09:51,592 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 14:09:51,592 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 14:09:51,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:51,593 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 14:09:51,593 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 14:09:51,593 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 14:09:51,880 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 14:09:51,898 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 14:09:51,904 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 14:09:51,905 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 14:09:51,906 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 14:09:51,907 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label38.c [2020-07-20 14:09:51,991 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18fc82f9c/1c4266558b4846b18d7b33391868404a/FLAG4733f19a0 [2020-07-20 14:09:52,629 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 14:09:52,630 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label38.c [2020-07-20 14:09:52,664 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18fc82f9c/1c4266558b4846b18d7b33391868404a/FLAG4733f19a0 [2020-07-20 14:09:52,859 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18fc82f9c/1c4266558b4846b18d7b33391868404a [2020-07-20 14:09:52,868 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 14:09:52,871 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 14:09:52,872 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 14:09:52,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 14:09:52,876 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 14:09:52,877 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:09:52" (1/1) ... [2020-07-20 14:09:52,880 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5853e384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:09:52, skipping insertion in model container [2020-07-20 14:09:52,880 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:09:52" (1/1) ... [2020-07-20 14:09:52,891 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 14:09:52,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 14:09:53,454 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:09:53,465 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 14:09:53,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:09:53,784 INFO L208 MainTranslator]: Completed translation [2020-07-20 14:09:53,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:09:53 WrapperNode [2020-07-20 14:09:53,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 14:09:53,786 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 14:09:53,786 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 14:09:53,786 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 14:09:53,807 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:09:53" (1/1) ... [2020-07-20 14:09:53,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:09:53" (1/1) ... [2020-07-20 14:09:53,848 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:09:53" (1/1) ... [2020-07-20 14:09:53,848 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:09:53" (1/1) ... [2020-07-20 14:09:53,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:09:53" (1/1) ... [2020-07-20 14:09:53,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:09:53" (1/1) ... [2020-07-20 14:09:53,948 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:09:53" (1/1) ... [2020-07-20 14:09:53,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 14:09:53,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 14:09:53,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 14:09:53,957 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 14:09:53,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:09:53" (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 [2020-07-20 14:09:54,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 14:09:54,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 14:09:54,035 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-20 14:09:54,036 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 14:09:54,036 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-20 14:09:54,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 14:09:54,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 14:09:54,037 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 14:09:54,037 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 14:09:54,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 14:09:54,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 14:09:55,401 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 14:09:55,401 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 14:09:55,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:09:55 BoogieIcfgContainer [2020-07-20 14:09:55,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 14:09:55,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 14:09:55,416 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 14:09:55,419 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 14:09:55,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 02:09:52" (1/3) ... [2020-07-20 14:09:55,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2df84080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:09:55, skipping insertion in model container [2020-07-20 14:09:55,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:09:53" (2/3) ... [2020-07-20 14:09:55,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2df84080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:09:55, skipping insertion in model container [2020-07-20 14:09:55,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:09:55" (3/3) ... [2020-07-20 14:09:55,428 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label38.c [2020-07-20 14:09:55,440 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 14:09:55,448 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 14:09:55,460 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 14:09:55,485 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 14:09:55,485 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 14:09:55,486 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 14:09:55,486 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 14:09:55,486 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 14:09:55,486 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 14:09:55,486 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 14:09:55,486 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 14:09:55,510 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-07-20 14:09:55,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-20 14:09:55,519 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:09:55,521 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:09:55,521 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:09:55,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:09:55,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1813043417, now seen corresponding path program 1 times [2020-07-20 14:09:55,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:09:55,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649479176] [2020-07-20 14:09:55,539 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 [2020-07-20 14:09:55,660 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:09:55,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:09:55,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 14:09:55,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:09:55,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:09:55,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:09:55,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649479176] [2020-07-20 14:09:55,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:09:55,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:09:55,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396368498] [2020-07-20 14:09:55,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:09:55,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:09:55,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:09:55,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:09:55,769 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2020-07-20 14:09:56,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:09:56,944 INFO L93 Difference]: Finished difference Result 586 states and 1004 transitions. [2020-07-20 14:09:56,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:09:56,947 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-07-20 14:09:56,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:09:56,964 INFO L225 Difference]: With dead ends: 586 [2020-07-20 14:09:56,964 INFO L226 Difference]: Without dead ends: 294 [2020-07-20 14:09:56,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:09:56,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-07-20 14:09:57,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2020-07-20 14:09:57,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-07-20 14:09:57,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 426 transitions. [2020-07-20 14:09:57,047 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 426 transitions. Word has length 38 [2020-07-20 14:09:57,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:09:57,047 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 426 transitions. [2020-07-20 14:09:57,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:09:57,048 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 426 transitions. [2020-07-20 14:09:57,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-07-20 14:09:57,054 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:09:57,054 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:09:57,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:57,264 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:09:57,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:09:57,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1939889954, now seen corresponding path program 1 times [2020-07-20 14:09:57,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:09:57,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771166837] [2020-07-20 14:09:57,266 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 [2020-07-20 14:09:57,358 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:09:57,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:09:57,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 14:09:57,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:09:57,436 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:09:57,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:09:57,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771166837] [2020-07-20 14:09:57,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:09:57,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 14:09:57,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545939112] [2020-07-20 14:09:57,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:09:57,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:09:57,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:09:57,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:09:57,441 INFO L87 Difference]: Start difference. First operand 294 states and 426 transitions. Second operand 5 states. [2020-07-20 14:09:58,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:09:58,515 INFO L93 Difference]: Finished difference Result 890 states and 1316 transitions. [2020-07-20 14:09:58,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 14:09:58,519 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-07-20 14:09:58,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:09:58,526 INFO L225 Difference]: With dead ends: 890 [2020-07-20 14:09:58,527 INFO L226 Difference]: Without dead ends: 602 [2020-07-20 14:09:58,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-20 14:09:58,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-07-20 14:09:58,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 590. [2020-07-20 14:09:58,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-07-20 14:09:58,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 775 transitions. [2020-07-20 14:09:58,582 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 775 transitions. Word has length 112 [2020-07-20 14:09:58,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:09:58,583 INFO L479 AbstractCegarLoop]: Abstraction has 590 states and 775 transitions. [2020-07-20 14:09:58,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:09:58,584 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 775 transitions. [2020-07-20 14:09:58,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-07-20 14:09:58,587 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:09:58,587 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:09:58,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:58,801 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:09:58,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:09:58,803 INFO L82 PathProgramCache]: Analyzing trace with hash -444185243, now seen corresponding path program 1 times [2020-07-20 14:09:58,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:09:58,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812717211] [2020-07-20 14:09:58,804 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 [2020-07-20 14:09:58,933 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:09:58,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:09:58,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:09:58,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:09:58,995 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:09:58,996 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:09:58,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1812717211] [2020-07-20 14:09:58,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:09:58,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:09:58,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923071727] [2020-07-20 14:09:59,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:09:59,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:09:59,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:09:59,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:09:59,011 INFO L87 Difference]: Start difference. First operand 590 states and 775 transitions. Second operand 3 states. [2020-07-20 14:09:59,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:09:59,729 INFO L93 Difference]: Finished difference Result 1462 states and 1992 transitions. [2020-07-20 14:09:59,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:09:59,731 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 117 [2020-07-20 14:09:59,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:09:59,745 INFO L225 Difference]: With dead ends: 1462 [2020-07-20 14:09:59,745 INFO L226 Difference]: Without dead ends: 878 [2020-07-20 14:09:59,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:09:59,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2020-07-20 14:09:59,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2020-07-20 14:09:59,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 878 states. [2020-07-20 14:09:59,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1157 transitions. [2020-07-20 14:09:59,826 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1157 transitions. Word has length 117 [2020-07-20 14:09:59,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:09:59,829 INFO L479 AbstractCegarLoop]: Abstraction has 878 states and 1157 transitions. [2020-07-20 14:09:59,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:09:59,830 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1157 transitions. [2020-07-20 14:09:59,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-07-20 14:09:59,843 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:09:59,843 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:10:00,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:10:00,058 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:10:00,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:10:00,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1165296197, now seen corresponding path program 1 times [2020-07-20 14:10:00,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:10:00,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217406566] [2020-07-20 14:10:00,060 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 [2020-07-20 14:10:00,154 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:10:00,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:10:00,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 14:10:00,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:10:00,214 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:10:00,214 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:10:00,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [217406566] [2020-07-20 14:10:00,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:10:00,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 14:10:00,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721910030] [2020-07-20 14:10:00,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:10:00,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:10:00,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:10:00,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:10:00,217 INFO L87 Difference]: Start difference. First operand 878 states and 1157 transitions. Second operand 5 states. [2020-07-20 14:10:01,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:10:01,217 INFO L93 Difference]: Finished difference Result 2370 states and 3201 transitions. [2020-07-20 14:10:01,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 14:10:01,217 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-07-20 14:10:01,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:10:01,228 INFO L225 Difference]: With dead ends: 2370 [2020-07-20 14:10:01,228 INFO L226 Difference]: Without dead ends: 1498 [2020-07-20 14:10:01,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-20 14:10:01,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2020-07-20 14:10:01,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1470. [2020-07-20 14:10:01,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1470 states. [2020-07-20 14:10:01,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 1802 transitions. [2020-07-20 14:10:01,287 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 1802 transitions. Word has length 133 [2020-07-20 14:10:01,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:10:01,287 INFO L479 AbstractCegarLoop]: Abstraction has 1470 states and 1802 transitions. [2020-07-20 14:10:01,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:10:01,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 1802 transitions. [2020-07-20 14:10:01,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-07-20 14:10:01,290 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:10:01,291 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:10:01,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:10:01,506 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:10:01,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:10:01,506 INFO L82 PathProgramCache]: Analyzing trace with hash -916724074, now seen corresponding path program 1 times [2020-07-20 14:10:01,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:10:01,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557568861] [2020-07-20 14:10:01,507 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 [2020-07-20 14:10:01,616 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:10:01,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:10:01,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:10:01,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:10:01,651 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:10:01,652 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:10:01,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557568861] [2020-07-20 14:10:01,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:10:01,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:10:01,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287256899] [2020-07-20 14:10:01,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:10:01,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:10:01,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:10:01,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:10:01,654 INFO L87 Difference]: Start difference. First operand 1470 states and 1802 transitions. Second operand 3 states. [2020-07-20 14:10:02,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:10:02,318 INFO L93 Difference]: Finished difference Result 2197 states and 2747 transitions. [2020-07-20 14:10:02,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:10:02,321 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2020-07-20 14:10:02,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:10:02,338 INFO L225 Difference]: With dead ends: 2197 [2020-07-20 14:10:02,338 INFO L226 Difference]: Without dead ends: 2195 [2020-07-20 14:10:02,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:10:02,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2195 states. [2020-07-20 14:10:02,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2195 to 1909. [2020-07-20 14:10:02,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1909 states. [2020-07-20 14:10:02,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1909 states to 1909 states and 2415 transitions. [2020-07-20 14:10:02,415 INFO L78 Accepts]: Start accepts. Automaton has 1909 states and 2415 transitions. Word has length 134 [2020-07-20 14:10:02,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:10:02,416 INFO L479 AbstractCegarLoop]: Abstraction has 1909 states and 2415 transitions. [2020-07-20 14:10:02,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:10:02,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1909 states and 2415 transitions. [2020-07-20 14:10:02,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-07-20 14:10:02,424 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:10:02,425 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:10:02,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:10:02,640 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:10:02,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:10:02,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1370569995, now seen corresponding path program 1 times [2020-07-20 14:10:02,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:10:02,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034974454] [2020-07-20 14:10:02,643 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 [2020-07-20 14:10:02,762 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:10:02,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:10:02,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:10:02,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:10:02,839 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:10:02,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:10:03,001 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:10:03,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034974454] [2020-07-20 14:10:03,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:10:03,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-20 14:10:03,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974775169] [2020-07-20 14:10:03,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 14:10:03,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:10:03,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 14:10:03,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 14:10:03,004 INFO L87 Difference]: Start difference. First operand 1909 states and 2415 transitions. Second operand 6 states. [2020-07-20 14:10:04,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:10:04,035 INFO L93 Difference]: Finished difference Result 4414 states and 5721 transitions. [2020-07-20 14:10:04,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 14:10:04,035 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 206 [2020-07-20 14:10:04,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:10:04,050 INFO L225 Difference]: With dead ends: 4414 [2020-07-20 14:10:04,051 INFO L226 Difference]: Without dead ends: 2511 [2020-07-20 14:10:04,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 406 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-20 14:10:04,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2020-07-20 14:10:04,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 2358. [2020-07-20 14:10:04,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2358 states. [2020-07-20 14:10:04,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2358 states to 2358 states and 2988 transitions. [2020-07-20 14:10:04,127 INFO L78 Accepts]: Start accepts. Automaton has 2358 states and 2988 transitions. Word has length 206 [2020-07-20 14:10:04,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:10:04,128 INFO L479 AbstractCegarLoop]: Abstraction has 2358 states and 2988 transitions. [2020-07-20 14:10:04,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 14:10:04,128 INFO L276 IsEmpty]: Start isEmpty. Operand 2358 states and 2988 transitions. [2020-07-20 14:10:04,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-07-20 14:10:04,134 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:10:04,134 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:10:04,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:10:04,348 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:10:04,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:10:04,349 INFO L82 PathProgramCache]: Analyzing trace with hash 24797361, now seen corresponding path program 1 times [2020-07-20 14:10:04,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:10:04,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978739276] [2020-07-20 14:10:04,351 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 [2020-07-20 14:10:04,498 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:10:04,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:10:04,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:10:04,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:10:04,550 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-07-20 14:10:04,550 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:10:04,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978739276] [2020-07-20 14:10:04,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:10:04,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:10:04,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799720671] [2020-07-20 14:10:04,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:10:04,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:10:04,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:10:04,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:10:04,552 INFO L87 Difference]: Start difference. First operand 2358 states and 2988 transitions. Second operand 3 states. [2020-07-20 14:10:05,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:10:05,217 INFO L93 Difference]: Finished difference Result 3224 states and 4120 transitions. [2020-07-20 14:10:05,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:10:05,218 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 224 [2020-07-20 14:10:05,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:10:05,234 INFO L225 Difference]: With dead ends: 3224 [2020-07-20 14:10:05,234 INFO L226 Difference]: Without dead ends: 3222 [2020-07-20 14:10:05,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:10:05,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3222 states. [2020-07-20 14:10:05,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3222 to 2360. [2020-07-20 14:10:05,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2360 states. [2020-07-20 14:10:05,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2360 states to 2360 states and 2989 transitions. [2020-07-20 14:10:05,312 INFO L78 Accepts]: Start accepts. Automaton has 2360 states and 2989 transitions. Word has length 224 [2020-07-20 14:10:05,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:10:05,313 INFO L479 AbstractCegarLoop]: Abstraction has 2360 states and 2989 transitions. [2020-07-20 14:10:05,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:10:05,313 INFO L276 IsEmpty]: Start isEmpty. Operand 2360 states and 2989 transitions. [2020-07-20 14:10:05,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-07-20 14:10:05,318 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:10:05,319 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:10:05,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:10:05,533 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:10:05,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:10:05,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1311750989, now seen corresponding path program 1 times [2020-07-20 14:10:05,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:10:05,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [23954883] [2020-07-20 14:10:05,534 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 [2020-07-20 14:10:05,686 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:10:05,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:10:05,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:10:05,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:10:05,788 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-07-20 14:10:05,788 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:10:05,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [23954883] [2020-07-20 14:10:05,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:10:05,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:10:05,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716413832] [2020-07-20 14:10:05,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:10:05,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:10:05,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:10:05,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:10:05,792 INFO L87 Difference]: Start difference. First operand 2360 states and 2989 transitions. Second operand 3 states. [2020-07-20 14:10:06,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:10:06,489 INFO L93 Difference]: Finished difference Result 5002 states and 6420 transitions. [2020-07-20 14:10:06,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:10:06,493 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 234 [2020-07-20 14:10:06,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:10:06,493 INFO L225 Difference]: With dead ends: 5002 [2020-07-20 14:10:06,494 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 14:10:06,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:10:06,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 14:10:06,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 14:10:06,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 14:10:06,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 14:10:06,509 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 234 [2020-07-20 14:10:06,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:10:06,510 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 14:10:06,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:10:06,510 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 14:10:06,511 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 14:10:06,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:10:06,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 14:10:07,447 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 44 [2020-07-20 14:10:07,595 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 14:10:07,596 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a10~0 |old(~a10~0)|) (<= ~a19~0 |old(~a19~0)|)) [2020-07-20 14:10:07,596 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 14:10:07,596 INFO L268 CegarLoopResult]: For program point L465(lines 465 572) no Hoare annotation was computed. [2020-07-20 14:10:07,597 INFO L268 CegarLoopResult]: For program point L201-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,597 INFO L268 CegarLoopResult]: For program point L168-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,597 INFO L268 CegarLoopResult]: For program point L135-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,597 INFO L268 CegarLoopResult]: For program point L102-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,597 INFO L268 CegarLoopResult]: For program point L69-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,598 INFO L268 CegarLoopResult]: For program point L36-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,598 INFO L268 CegarLoopResult]: For program point L499(lines 499 572) no Hoare annotation was computed. [2020-07-20 14:10:07,598 INFO L268 CegarLoopResult]: For program point L301(lines 301 572) no Hoare annotation was computed. [2020-07-20 14:10:07,598 INFO L268 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2020-07-20 14:10:07,598 INFO L268 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2020-07-20 14:10:07,598 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-07-20 14:10:07,599 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-07-20 14:10:07,599 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-07-20 14:10:07,599 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-07-20 14:10:07,599 INFO L268 CegarLoopResult]: For program point L335(lines 335 572) no Hoare annotation was computed. [2020-07-20 14:10:07,599 INFO L268 CegarLoopResult]: For program point L236(lines 236 572) no Hoare annotation was computed. [2020-07-20 14:10:07,599 INFO L268 CegarLoopResult]: For program point L534(lines 534 572) no Hoare annotation was computed. [2020-07-20 14:10:07,599 INFO L268 CegarLoopResult]: For program point L171-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,599 INFO L268 CegarLoopResult]: For program point L138-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,600 INFO L268 CegarLoopResult]: For program point L105-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,600 INFO L268 CegarLoopResult]: For program point L72-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,600 INFO L268 CegarLoopResult]: For program point L39-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,600 INFO L268 CegarLoopResult]: For program point L436(lines 436 572) no Hoare annotation was computed. [2020-07-20 14:10:07,600 INFO L268 CegarLoopResult]: For program point L403(lines 403 572) no Hoare annotation was computed. [2020-07-20 14:10:07,600 INFO L268 CegarLoopResult]: For program point L370(lines 370 572) no Hoare annotation was computed. [2020-07-20 14:10:07,600 INFO L268 CegarLoopResult]: For program point L271(lines 271 572) no Hoare annotation was computed. [2020-07-20 14:10:07,600 INFO L268 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2020-07-20 14:10:07,601 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-07-20 14:10:07,601 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-07-20 14:10:07,601 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-07-20 14:10:07,601 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-07-20 14:10:07,601 INFO L268 CegarLoopResult]: For program point L569(lines 569 572) no Hoare annotation was computed. [2020-07-20 14:10:07,601 INFO L268 CegarLoopResult]: For program point L239(lines 239 572) no Hoare annotation was computed. [2020-07-20 14:10:07,601 INFO L268 CegarLoopResult]: For program point L504(lines 504 572) no Hoare annotation was computed. [2020-07-20 14:10:07,602 INFO L268 CegarLoopResult]: For program point L471(lines 471 572) no Hoare annotation was computed. [2020-07-20 14:10:07,602 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 100) no Hoare annotation was computed. [2020-07-20 14:10:07,602 INFO L268 CegarLoopResult]: For program point L306(lines 306 572) no Hoare annotation was computed. [2020-07-20 14:10:07,602 INFO L268 CegarLoopResult]: For program point L174-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,602 INFO L268 CegarLoopResult]: For program point L141-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,602 INFO L268 CegarLoopResult]: For program point L108-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,602 INFO L268 CegarLoopResult]: For program point L75-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,603 INFO L268 CegarLoopResult]: For program point L42-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,603 INFO L268 CegarLoopResult]: For program point L340(lines 340 572) no Hoare annotation was computed. [2020-07-20 14:10:07,603 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-20 14:10:07,603 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-07-20 14:10:07,603 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-07-20 14:10:07,603 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-07-20 14:10:07,603 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-07-20 14:10:07,603 INFO L268 CegarLoopResult]: For program point L540(lines 540 572) no Hoare annotation was computed. [2020-07-20 14:10:07,603 INFO L268 CegarLoopResult]: For program point L408(lines 408 572) no Hoare annotation was computed. [2020-07-20 14:10:07,604 INFO L268 CegarLoopResult]: For program point L375(lines 375 572) no Hoare annotation was computed. [2020-07-20 14:10:07,604 INFO L268 CegarLoopResult]: For program point L210(lines 210 572) no Hoare annotation was computed. [2020-07-20 14:10:07,604 INFO L268 CegarLoopResult]: For program point L177-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,604 INFO L268 CegarLoopResult]: For program point L144-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,604 INFO L268 CegarLoopResult]: For program point L111-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,604 INFO L268 CegarLoopResult]: For program point L78-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,604 INFO L268 CegarLoopResult]: For program point L45-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,604 INFO L268 CegarLoopResult]: For program point L442(lines 442 572) no Hoare annotation was computed. [2020-07-20 14:10:07,604 INFO L268 CegarLoopResult]: For program point L277(lines 277 572) no Hoare annotation was computed. [2020-07-20 14:10:07,605 INFO L268 CegarLoopResult]: For program point L244(lines 244 572) no Hoare annotation was computed. [2020-07-20 14:10:07,605 INFO L268 CegarLoopResult]: For program point L178(line 178) no Hoare annotation was computed. [2020-07-20 14:10:07,605 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-07-20 14:10:07,605 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-07-20 14:10:07,605 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-07-20 14:10:07,605 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-20 14:10:07,605 INFO L268 CegarLoopResult]: For program point L509(lines 509 572) no Hoare annotation was computed. [2020-07-20 14:10:07,605 INFO L268 CegarLoopResult]: For program point L476(lines 476 572) no Hoare annotation was computed. [2020-07-20 14:10:07,606 INFO L268 CegarLoopResult]: For program point L378(lines 378 572) no Hoare annotation was computed. [2020-07-20 14:10:07,606 INFO L268 CegarLoopResult]: For program point L345(lines 345 572) no Hoare annotation was computed. [2020-07-20 14:10:07,606 INFO L268 CegarLoopResult]: For program point L312(lines 312 572) no Hoare annotation was computed. [2020-07-20 14:10:07,606 INFO L268 CegarLoopResult]: For program point L180-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,606 INFO L268 CegarLoopResult]: For program point L147-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,606 INFO L268 CegarLoopResult]: For program point L114-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,606 INFO L268 CegarLoopResult]: For program point L81-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,606 INFO L268 CegarLoopResult]: For program point L48-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,606 INFO L268 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2020-07-20 14:10:07,607 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-07-20 14:10:07,607 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-20 14:10:07,607 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-07-20 14:10:07,607 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-07-20 14:10:07,607 INFO L268 CegarLoopResult]: For program point L545(lines 545 572) no Hoare annotation was computed. [2020-07-20 14:10:07,607 INFO L268 CegarLoopResult]: For program point L215(lines 215 572) no Hoare annotation was computed. [2020-07-20 14:10:07,607 INFO L268 CegarLoopResult]: For program point L414(lines 414 572) no Hoare annotation was computed. [2020-07-20 14:10:07,607 INFO L268 CegarLoopResult]: For program point L249(lines 249 572) no Hoare annotation was computed. [2020-07-20 14:10:07,608 INFO L268 CegarLoopResult]: For program point L183-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,608 INFO L268 CegarLoopResult]: For program point L150-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,608 INFO L268 CegarLoopResult]: For program point L117-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,608 INFO L268 CegarLoopResult]: For program point L84-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,608 INFO L268 CegarLoopResult]: For program point L51-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,608 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,608 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,608 INFO L268 CegarLoopResult]: For program point L514(lines 514 572) no Hoare annotation was computed. [2020-07-20 14:10:07,608 INFO L268 CegarLoopResult]: For program point L481(lines 481 572) no Hoare annotation was computed. [2020-07-20 14:10:07,609 INFO L268 CegarLoopResult]: For program point L448(lines 448 572) no Hoare annotation was computed. [2020-07-20 14:10:07,609 INFO L268 CegarLoopResult]: For program point L283(lines 283 572) no Hoare annotation was computed. [2020-07-20 14:10:07,609 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-07-20 14:10:07,609 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-07-20 14:10:07,609 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-07-20 14:10:07,609 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-07-20 14:10:07,609 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-07-20 14:10:07,609 INFO L268 CegarLoopResult]: For program point L548(lines 548 572) no Hoare annotation was computed. [2020-07-20 14:10:07,609 INFO L268 CegarLoopResult]: For program point L383(lines 383 572) no Hoare annotation was computed. [2020-07-20 14:10:07,610 INFO L268 CegarLoopResult]: For program point L317(lines 317 572) no Hoare annotation was computed. [2020-07-20 14:10:07,610 INFO L268 CegarLoopResult]: For program point L351(lines 351 572) no Hoare annotation was computed. [2020-07-20 14:10:07,610 INFO L268 CegarLoopResult]: For program point L186-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,610 INFO L268 CegarLoopResult]: For program point L153-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,610 INFO L268 CegarLoopResult]: For program point L120-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,610 INFO L268 CegarLoopResult]: For program point L87-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,610 INFO L268 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-07-20 14:10:07,610 INFO L268 CegarLoopResult]: For program point L54-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,610 INFO L268 CegarLoopResult]: For program point L21-2(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,611 INFO L268 CegarLoopResult]: For program point L517(lines 517 572) no Hoare annotation was computed. [2020-07-20 14:10:07,611 INFO L268 CegarLoopResult]: For program point L286(lines 286 572) no Hoare annotation was computed. [2020-07-20 14:10:07,611 INFO L268 CegarLoopResult]: For program point L220(lines 220 572) no Hoare annotation was computed. [2020-07-20 14:10:07,611 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-20 14:10:07,611 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-07-20 14:10:07,611 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-07-20 14:10:07,611 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-07-20 14:10:07,611 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-07-20 14:10:07,612 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-20 14:10:07,612 INFO L268 CegarLoopResult]: For program point L419(lines 419 572) no Hoare annotation was computed. [2020-07-20 14:10:07,612 INFO L268 CegarLoopResult]: For program point L320(lines 320 572) no Hoare annotation was computed. [2020-07-20 14:10:07,612 INFO L268 CegarLoopResult]: For program point L254(lines 254 572) no Hoare annotation was computed. [2020-07-20 14:10:07,612 INFO L268 CegarLoopResult]: For program point L354(lines 354 572) no Hoare annotation was computed. [2020-07-20 14:10:07,612 INFO L268 CegarLoopResult]: For program point L189-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,612 INFO L268 CegarLoopResult]: For program point L156-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,612 INFO L268 CegarLoopResult]: For program point L123-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,612 INFO L268 CegarLoopResult]: For program point L90-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,613 INFO L268 CegarLoopResult]: For program point L57-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,613 INFO L268 CegarLoopResult]: For program point L24-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,613 INFO L268 CegarLoopResult]: For program point L487(lines 487 572) no Hoare annotation was computed. [2020-07-20 14:10:07,613 INFO L268 CegarLoopResult]: For program point L454(lines 454 572) no Hoare annotation was computed. [2020-07-20 14:10:07,613 INFO L268 CegarLoopResult]: For program point L388(lines 388 572) no Hoare annotation was computed. [2020-07-20 14:10:07,613 INFO L268 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2020-07-20 14:10:07,613 INFO L268 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2020-07-20 14:10:07,613 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-07-20 14:10:07,613 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-07-20 14:10:07,614 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-07-20 14:10:07,614 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-20 14:10:07,614 INFO L268 CegarLoopResult]: For program point L554(lines 554 572) no Hoare annotation was computed. [2020-07-20 14:10:07,614 INFO L268 CegarLoopResult]: For program point L323(lines 323 572) no Hoare annotation was computed. [2020-07-20 14:10:07,614 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 20 574) the Hoare annotation is: (let ((.cse3 (not (<= |old(~a1~0)| 23))) (.cse1 (<= ~a1~0 23)) (.cse7 (not (<= 9 |old(~a19~0)|))) (.cse6 (<= 9 ~a19~0)) (.cse5 (not (<= |old(~a10~0)| 1))) (.cse0 (<= ~a10~0 |old(~a10~0)|)) (.cse2 (<= ~a19~0 |old(~a19~0)|)) (.cse4 (not (<= |old(~a19~0)| 9)))) (and (or (and .cse0 .cse1 .cse2) .cse3 .cse4) (or .cse3 .cse1 .cse5) (or .cse6 .cse7 .cse4 (not (<= |old(~a10~0)| 2))) (or .cse7 (and .cse6 .cse0 .cse2) .cse5) (or (not (<= |old(~a10~0)| 3)) (and .cse0 .cse2) .cse4) (or (and .cse0 (<= 8 ~a19~0) .cse2) (not (<= 8 |old(~a19~0)|)) .cse4))) [2020-07-20 14:10:07,614 INFO L268 CegarLoopResult]: For program point L357(lines 357 572) no Hoare annotation was computed. [2020-07-20 14:10:07,614 INFO L268 CegarLoopResult]: For program point L291(lines 291 572) no Hoare annotation was computed. [2020-07-20 14:10:07,614 INFO L268 CegarLoopResult]: For program point L225(lines 225 572) no Hoare annotation was computed. [2020-07-20 14:10:07,615 INFO L268 CegarLoopResult]: For program point L192-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,615 INFO L268 CegarLoopResult]: For program point L159-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,615 INFO L268 CegarLoopResult]: For program point L126-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,615 INFO L268 CegarLoopResult]: For program point L93-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,615 INFO L268 CegarLoopResult]: For program point L60-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,615 INFO L268 CegarLoopResult]: For program point L27-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,615 INFO L268 CegarLoopResult]: For program point L523(lines 523 572) no Hoare annotation was computed. [2020-07-20 14:10:07,615 INFO L268 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2020-07-20 14:10:07,615 INFO L268 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-07-20 14:10:07,615 INFO L268 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-07-20 14:10:07,616 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-07-20 14:10:07,616 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-07-20 14:10:07,616 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-07-20 14:10:07,616 INFO L268 CegarLoopResult]: For program point L557(lines 557 572) no Hoare annotation was computed. [2020-07-20 14:10:07,616 INFO L268 CegarLoopResult]: For program point L425(lines 425 572) no Hoare annotation was computed. [2020-07-20 14:10:07,616 INFO L268 CegarLoopResult]: For program point L326(lines 326 572) no Hoare annotation was computed. [2020-07-20 14:10:07,616 INFO L268 CegarLoopResult]: For program point L260(lines 260 572) no Hoare annotation was computed. [2020-07-20 14:10:07,616 INFO L268 CegarLoopResult]: For program point L393(lines 393 572) no Hoare annotation was computed. [2020-07-20 14:10:07,616 INFO L268 CegarLoopResult]: For program point L360(lines 360 572) no Hoare annotation was computed. [2020-07-20 14:10:07,617 INFO L268 CegarLoopResult]: For program point L195-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,617 INFO L268 CegarLoopResult]: For program point L162-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,617 INFO L268 CegarLoopResult]: For program point L129-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,617 INFO L268 CegarLoopResult]: For program point L96-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,617 INFO L268 CegarLoopResult]: For program point L63-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,617 INFO L268 CegarLoopResult]: For program point L30-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,617 INFO L268 CegarLoopResult]: For program point L526(lines 526 572) no Hoare annotation was computed. [2020-07-20 14:10:07,617 INFO L268 CegarLoopResult]: For program point L493(lines 493 572) no Hoare annotation was computed. [2020-07-20 14:10:07,617 INFO L268 CegarLoopResult]: For program point L460(lines 460 572) no Hoare annotation was computed. [2020-07-20 14:10:07,617 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-07-20 14:10:07,618 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-07-20 14:10:07,618 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-07-20 14:10:07,618 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-07-20 14:10:07,618 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-07-20 14:10:07,618 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-20 14:10:07,618 INFO L268 CegarLoopResult]: For program point L329(lines 329 572) no Hoare annotation was computed. [2020-07-20 14:10:07,618 INFO L268 CegarLoopResult]: For program point L296(lines 296 572) no Hoare annotation was computed. [2020-07-20 14:10:07,618 INFO L268 CegarLoopResult]: For program point L231(lines 231 572) no Hoare annotation was computed. [2020-07-20 14:10:07,618 INFO L268 CegarLoopResult]: For program point L198-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,618 INFO L268 CegarLoopResult]: For program point L165-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,619 INFO L268 CegarLoopResult]: For program point L132-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,619 INFO L268 CegarLoopResult]: For program point L99-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,619 INFO L268 CegarLoopResult]: For program point L66-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,619 INFO L268 CegarLoopResult]: For program point L33-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:10:07,619 INFO L268 CegarLoopResult]: For program point L529(lines 529 572) no Hoare annotation was computed. [2020-07-20 14:10:07,619 INFO L268 CegarLoopResult]: For program point L430(lines 430 572) no Hoare annotation was computed. [2020-07-20 14:10:07,619 INFO L268 CegarLoopResult]: For program point L265(lines 265 572) no Hoare annotation was computed. [2020-07-20 14:10:07,619 INFO L268 CegarLoopResult]: For program point L199(line 199) no Hoare annotation was computed. [2020-07-20 14:10:07,620 INFO L268 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2020-07-20 14:10:07,620 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-07-20 14:10:07,620 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-07-20 14:10:07,620 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-07-20 14:10:07,620 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-20 14:10:07,620 INFO L268 CegarLoopResult]: For program point L563(lines 563 572) no Hoare annotation was computed. [2020-07-20 14:10:07,620 INFO L268 CegarLoopResult]: For program point L398(lines 398 572) no Hoare annotation was computed. [2020-07-20 14:10:07,620 INFO L268 CegarLoopResult]: For program point L365(lines 365 572) no Hoare annotation was computed. [2020-07-20 14:10:07,620 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 14:10:07,621 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a10~0 0) (<= ~a19~0 9) (<= 9 ~a19~0) (<= ~a1~0 23)) [2020-07-20 14:10:07,621 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 14:10:07,621 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 14:10:07,621 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 576 592) the Hoare annotation is: (or (not (<= |old(~a1~0)| 23)) (not (<= |old(~a10~0)| 0)) (not (<= 9 |old(~a19~0)|)) (and (<= 9 ~a19~0) (<= ~a10~0 |old(~a10~0)|) (<= ~a1~0 23) (<= ~a19~0 |old(~a19~0)|)) (not (<= |old(~a19~0)| 9))) [2020-07-20 14:10:07,621 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 576 592) no Hoare annotation was computed. [2020-07-20 14:10:07,621 INFO L264 CegarLoopResult]: At program point L590(line 590) the Hoare annotation is: (let ((.cse0 (<= ~a19~0 9))) (or (and .cse0 (<= ~a1~0 23)) (<= ~a10~0 1) (and .cse0 (<= ~a10~0 3)) (not (<= |old(~a1~0)| 23)) (not (<= |old(~a10~0)| 0)) (not (<= 9 |old(~a19~0)|)) (not (<= |old(~a19~0)| 9)) (and .cse0 (<= 8 ~a19~0)))) [2020-07-20 14:10:07,621 INFO L268 CegarLoopResult]: For program point L590-1(line 590) no Hoare annotation was computed. [2020-07-20 14:10:07,622 INFO L268 CegarLoopResult]: For program point L587(line 587) no Hoare annotation was computed. [2020-07-20 14:10:07,622 INFO L264 CegarLoopResult]: At program point L582-2(lines 582 591) the Hoare annotation is: (let ((.cse0 (<= ~a19~0 9))) (or (and .cse0 (<= ~a1~0 23)) (<= ~a10~0 1) (and .cse0 (<= ~a10~0 3)) (not (<= |old(~a1~0)| 23)) (not (<= |old(~a10~0)| 0)) (not (<= 9 |old(~a19~0)|)) (not (<= |old(~a19~0)| 9)) (and .cse0 (<= 8 ~a19~0)))) [2020-07-20 14:10:07,622 INFO L268 CegarLoopResult]: For program point L582-3(lines 576 592) no Hoare annotation was computed. [2020-07-20 14:10:07,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 02:10:07 BoogieIcfgContainer [2020-07-20 14:10:07,642 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 14:10:07,644 INFO L168 Benchmark]: Toolchain (without parser) took 14774.83 ms. Allocated memory was 136.8 MB in the beginning and 384.8 MB in the end (delta: 248.0 MB). Free memory was 99.7 MB in the beginning and 96.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 251.4 MB. Max. memory is 7.1 GB. [2020-07-20 14:10:07,645 INFO L168 Benchmark]: CDTParser took 0.66 ms. Allocated memory is still 136.8 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-20 14:10:07,646 INFO L168 Benchmark]: CACSL2BoogieTranslator took 913.19 ms. Allocated memory was 136.8 MB in the beginning and 203.4 MB in the end (delta: 66.6 MB). Free memory was 99.3 MB in the beginning and 169.8 MB in the end (delta: -70.6 MB). Peak memory consumption was 36.8 MB. Max. memory is 7.1 GB. [2020-07-20 14:10:07,647 INFO L168 Benchmark]: Boogie Preprocessor took 170.63 ms. Allocated memory is still 203.4 MB. Free memory was 169.8 MB in the beginning and 165.5 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-07-20 14:10:07,648 INFO L168 Benchmark]: RCFGBuilder took 1456.99 ms. Allocated memory was 203.4 MB in the beginning and 233.8 MB in the end (delta: 30.4 MB). Free memory was 165.5 MB in the beginning and 180.8 MB in the end (delta: -15.4 MB). Peak memory consumption was 86.3 MB. Max. memory is 7.1 GB. [2020-07-20 14:10:07,649 INFO L168 Benchmark]: TraceAbstraction took 12226.59 ms. Allocated memory was 233.8 MB in the beginning and 384.8 MB in the end (delta: 151.0 MB). Free memory was 180.8 MB in the beginning and 96.3 MB in the end (delta: 84.5 MB). Peak memory consumption was 235.5 MB. Max. memory is 7.1 GB. [2020-07-20 14:10:07,653 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.66 ms. Allocated memory is still 136.8 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 913.19 ms. Allocated memory was 136.8 MB in the beginning and 203.4 MB in the end (delta: 66.6 MB). Free memory was 99.3 MB in the beginning and 169.8 MB in the end (delta: -70.6 MB). Peak memory consumption was 36.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 170.63 ms. Allocated memory is still 203.4 MB. Free memory was 169.8 MB in the beginning and 165.5 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1456.99 ms. Allocated memory was 203.4 MB in the beginning and 233.8 MB in the end (delta: 30.4 MB). Free memory was 165.5 MB in the beginning and 180.8 MB in the end (delta: -15.4 MB). Peak memory consumption was 86.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12226.59 ms. Allocated memory was 233.8 MB in the beginning and 384.8 MB in the end (delta: 151.0 MB). Free memory was 180.8 MB in the beginning and 96.3 MB in the end (delta: 84.5 MB). Peak memory consumption was 235.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 100]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 582]: Loop Invariant Derived loop invariant: (((((((a19 <= 9 && a1 <= 23) || a10 <= 1) || (a19 <= 9 && a10 <= 3)) || !(\old(a1) <= 23)) || !(\old(a10) <= 0)) || !(9 <= \old(a19))) || !(\old(a19) <= 9)) || (a19 <= 9 && 8 <= a19) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.2s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 7.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 243 SDtfs, 1823 SDslu, 147 SDs, 0 SdLazy, 3666 SolverSat, 858 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1406 GetRequests, 1380 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2360occurred in iteration=7, 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, 8 MinimizatonAttempts, 1341 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 66 PreInvPairs, 102 NumberOfFragments, 235 HoareAnnotationTreeSize, 66 FomulaSimplifications, 2752 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 7 FomulaSimplificationsInter, 1036 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 1198 NumberOfCodeBlocks, 1198 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 1395 ConstructedInterpolants, 0 QuantifiedInterpolants, 501263 SizeOfPredicates, 13 NumberOfNonLiveVariables, 2358 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 675/679 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...