/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 DAGSIZE --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_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 22:06:20,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 22:06:20,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 22:06:20,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 22:06:20,576 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 22:06:20,578 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 22:06:20,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 22:06:20,592 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 22:06:20,594 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 22:06:20,596 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 22:06:20,597 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 22:06:20,599 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 22:06:20,599 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 22:06:20,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 22:06:20,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 22:06:20,606 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 22:06:20,608 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 22:06:20,609 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 22:06:20,611 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 22:06:20,615 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 22:06:20,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 22:06:20,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 22:06:20,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 22:06:20,622 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 22:06:20,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 22:06:20,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 22:06:20,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 22:06:20,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 22:06:20,642 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 22:06:20,664 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 22:06:20,664 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 22:06:20,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 22:06:20,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 22:06:20,666 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 22:06:20,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 22:06:20,667 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 22:06:20,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 22:06:20,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 22:06:20,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 22:06:20,669 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 22:06:20,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 22:06:20,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 22:06:20,670 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 22:06:20,670 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 22:06:20,670 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 22:06:20,670 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 22:06:20,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 22:06:20,671 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 22:06:20,671 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 22:06:20,671 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 22:06:20,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 22:06:20,671 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 22:06:20,672 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 22:06:20,672 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 22:06:20,672 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 22:06:20,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:06:20,672 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 22:06:20,673 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 22:06:20,673 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 -> DAGSIZE 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 22:06:20,959 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 22:06:20,972 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 22:06:20,976 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 22:06:20,977 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 22:06:20,977 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 22:06:20,978 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label08.c [2020-07-20 22:06:21,050 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/286b03f8f/2287e6627e8e49abbb3a7a372f761282/FLAGa16265250 [2020-07-20 22:06:21,631 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 22:06:21,631 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label08.c [2020-07-20 22:06:21,643 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/286b03f8f/2287e6627e8e49abbb3a7a372f761282/FLAGa16265250 [2020-07-20 22:06:21,930 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/286b03f8f/2287e6627e8e49abbb3a7a372f761282 [2020-07-20 22:06:21,940 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 22:06:21,943 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 22:06:21,944 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 22:06:21,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 22:06:21,947 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 22:06:21,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:06:21" (1/1) ... [2020-07-20 22:06:21,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b69f751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:06:21, skipping insertion in model container [2020-07-20 22:06:21,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:06:21" (1/1) ... [2020-07-20 22:06:21,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 22:06:22,006 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 22:06:22,471 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 22:06:22,477 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 22:06:22,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 22:06:22,711 INFO L208 MainTranslator]: Completed translation [2020-07-20 22:06:22,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:06:22 WrapperNode [2020-07-20 22:06:22,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 22:06:22,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 22:06:22,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 22:06:22,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 22:06:22,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:06:22" (1/1) ... [2020-07-20 22:06:22,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:06:22" (1/1) ... [2020-07-20 22:06:22,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:06:22" (1/1) ... [2020-07-20 22:06:22,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:06:22" (1/1) ... [2020-07-20 22:06:22,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:06:22" (1/1) ... [2020-07-20 22:06:22,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:06:22" (1/1) ... [2020-07-20 22:06:22,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:06:22" (1/1) ... [2020-07-20 22:06:22,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 22:06:22,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 22:06:22,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 22:06:22,813 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 22:06:22,814 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:06:22" (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 22:06:22,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 22:06:22,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 22:06:22,893 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-20 22:06:22,893 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 22:06:22,894 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-20 22:06:22,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 22:06:22,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 22:06:22,894 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 22:06:22,894 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 22:06:22,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 22:06:22,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 22:06:24,209 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 22:06:24,210 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 22:06:24,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:06:24 BoogieIcfgContainer [2020-07-20 22:06:24,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 22:06:24,224 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 22:06:24,224 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 22:06:24,227 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 22:06:24,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:06:21" (1/3) ... [2020-07-20 22:06:24,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1208d7c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:06:24, skipping insertion in model container [2020-07-20 22:06:24,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:06:22" (2/3) ... [2020-07-20 22:06:24,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1208d7c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:06:24, skipping insertion in model container [2020-07-20 22:06:24,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:06:24" (3/3) ... [2020-07-20 22:06:24,235 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label08.c [2020-07-20 22:06:24,247 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 22:06:24,260 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 22:06:24,275 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 22:06:24,310 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 22:06:24,311 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 22:06:24,312 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 22:06:24,312 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 22:06:24,312 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 22:06:24,312 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 22:06:24,312 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 22:06:24,312 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 22:06:24,341 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-07-20 22:06:24,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-20 22:06:24,353 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:06:24,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:06:24,354 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:06:24,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:06:24,360 INFO L82 PathProgramCache]: Analyzing trace with hash -464539961, now seen corresponding path program 1 times [2020-07-20 22:06:24,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:06:24,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588915994] [2020-07-20 22:06:24,367 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 22:06:24,482 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:06:24,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:06:24,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 22:06:24,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:06:24,563 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 22:06:24,564 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:06:24,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588915994] [2020-07-20 22:06:24,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:06:24,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:06:24,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849177466] [2020-07-20 22:06:24,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:06:24,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:06:24,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:06:24,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:06:24,589 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2020-07-20 22:06:25,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:06:25,623 INFO L93 Difference]: Finished difference Result 571 states and 989 transitions. [2020-07-20 22:06:25,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:06:25,625 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-07-20 22:06:25,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:06:25,643 INFO L225 Difference]: With dead ends: 571 [2020-07-20 22:06:25,643 INFO L226 Difference]: Without dead ends: 294 [2020-07-20 22:06:25,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 44 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 22:06:25,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-07-20 22:06:25,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2020-07-20 22:06:25,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-07-20 22:06:25,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 391 transitions. [2020-07-20 22:06:25,726 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 391 transitions. Word has length 46 [2020-07-20 22:06:25,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:06:25,727 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 391 transitions. [2020-07-20 22:06:25,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:06:25,727 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 391 transitions. [2020-07-20 22:06:25,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-07-20 22:06:25,733 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:06:25,733 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:06:25,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:06:25,949 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:06:25,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:06:25,950 INFO L82 PathProgramCache]: Analyzing trace with hash 2020042122, now seen corresponding path program 1 times [2020-07-20 22:06:25,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:06:25,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642670713] [2020-07-20 22:06:25,951 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 22:06:26,063 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:06:26,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:06:26,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 22:06:26,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:06:26,127 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:06:26,127 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:06:26,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642670713] [2020-07-20 22:06:26,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:06:26,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:06:26,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245550160] [2020-07-20 22:06:26,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:06:26,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:06:26,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:06:26,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:06:26,133 INFO L87 Difference]: Start difference. First operand 294 states and 391 transitions. Second operand 3 states. [2020-07-20 22:06:26,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:06:26,782 INFO L93 Difference]: Finished difference Result 582 states and 784 transitions. [2020-07-20 22:06:26,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:06:26,783 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 116 [2020-07-20 22:06:26,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:06:26,795 INFO L225 Difference]: With dead ends: 582 [2020-07-20 22:06:26,795 INFO L226 Difference]: Without dead ends: 580 [2020-07-20 22:06:26,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 114 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 22:06:26,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-07-20 22:06:26,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 437. [2020-07-20 22:06:26,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-07-20 22:06:26,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 613 transitions. [2020-07-20 22:06:26,833 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 613 transitions. Word has length 116 [2020-07-20 22:06:26,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:06:26,834 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 613 transitions. [2020-07-20 22:06:26,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:06:26,834 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 613 transitions. [2020-07-20 22:06:26,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-07-20 22:06:26,838 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:06:26,838 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:06:27,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:06:27,055 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:06:27,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:06:27,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1611452593, now seen corresponding path program 1 times [2020-07-20 22:06:27,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:06:27,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [923071727] [2020-07-20 22:06:27,057 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 22:06:27,175 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:06:27,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:06:27,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 22:06:27,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:06:27,223 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:06:27,223 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:06:27,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [923071727] [2020-07-20 22:06:27,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:06:27,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:06:27,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400691257] [2020-07-20 22:06:27,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:06:27,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:06:27,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:06:27,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:06:27,236 INFO L87 Difference]: Start difference. First operand 437 states and 613 transitions. Second operand 3 states. [2020-07-20 22:06:27,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:06:27,926 INFO L93 Difference]: Finished difference Result 725 states and 1009 transitions. [2020-07-20 22:06:27,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:06:27,929 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2020-07-20 22:06:27,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:06:27,935 INFO L225 Difference]: With dead ends: 725 [2020-07-20 22:06:27,935 INFO L226 Difference]: Without dead ends: 723 [2020-07-20 22:06:27,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 117 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 22:06:27,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-07-20 22:06:27,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 437. [2020-07-20 22:06:27,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-07-20 22:06:27,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 613 transitions. [2020-07-20 22:06:27,963 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 613 transitions. Word has length 119 [2020-07-20 22:06:27,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:06:27,964 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 613 transitions. [2020-07-20 22:06:27,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:06:27,964 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 613 transitions. [2020-07-20 22:06:27,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-07-20 22:06:27,971 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:06:27,971 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:06:28,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:06:28,177 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:06:28,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:06:28,178 INFO L82 PathProgramCache]: Analyzing trace with hash -2147143710, now seen corresponding path program 1 times [2020-07-20 22:06:28,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:06:28,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229616365] [2020-07-20 22:06:28,179 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 22:06:28,268 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:06:28,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:06:28,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 22:06:28,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:06:28,329 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:06:28,329 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:06:28,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229616365] [2020-07-20 22:06:28,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:06:28,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:06:28,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854074865] [2020-07-20 22:06:28,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:06:28,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:06:28,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:06:28,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:06:28,333 INFO L87 Difference]: Start difference. First operand 437 states and 613 transitions. Second operand 3 states. [2020-07-20 22:06:29,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:06:29,047 INFO L93 Difference]: Finished difference Result 1154 states and 1676 transitions. [2020-07-20 22:06:29,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:06:29,051 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2020-07-20 22:06:29,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:06:29,056 INFO L225 Difference]: With dead ends: 1154 [2020-07-20 22:06:29,056 INFO L226 Difference]: Without dead ends: 723 [2020-07-20 22:06:29,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 166 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 22:06:29,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-07-20 22:06:29,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 580. [2020-07-20 22:06:29,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-07-20 22:06:29,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 806 transitions. [2020-07-20 22:06:29,085 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 806 transitions. Word has length 168 [2020-07-20 22:06:29,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:06:29,085 INFO L479 AbstractCegarLoop]: Abstraction has 580 states and 806 transitions. [2020-07-20 22:06:29,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:06:29,086 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 806 transitions. [2020-07-20 22:06:29,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-07-20 22:06:29,098 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:06:29,098 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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 22:06:29,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:06:29,310 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:06:29,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:06:29,311 INFO L82 PathProgramCache]: Analyzing trace with hash -2143888491, now seen corresponding path program 1 times [2020-07-20 22:06:29,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:06:29,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [28088160] [2020-07-20 22:06:29,312 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 22:06:29,426 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:06:29,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:06:29,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 22:06:29,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:06:29,532 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 146 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:06:29,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 22:06:29,693 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 146 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:06:29,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [28088160] [2020-07-20 22:06:29,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 22:06:29,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-20 22:06:29,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277940605] [2020-07-20 22:06:29,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 22:06:29,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:06:29,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 22:06:29,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 22:06:29,698 INFO L87 Difference]: Start difference. First operand 580 states and 806 transitions. Second operand 6 states. [2020-07-20 22:06:30,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:06:30,798 INFO L93 Difference]: Finished difference Result 1468 states and 2114 transitions. [2020-07-20 22:06:30,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 22:06:30,800 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 214 [2020-07-20 22:06:30,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:06:30,805 INFO L225 Difference]: With dead ends: 1468 [2020-07-20 22:06:30,806 INFO L226 Difference]: Without dead ends: 894 [2020-07-20 22:06:30,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 422 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 22:06:30,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2020-07-20 22:06:30,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 888. [2020-07-20 22:06:30,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 888 states. [2020-07-20 22:06:30,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1255 transitions. [2020-07-20 22:06:30,843 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1255 transitions. Word has length 214 [2020-07-20 22:06:30,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:06:30,844 INFO L479 AbstractCegarLoop]: Abstraction has 888 states and 1255 transitions. [2020-07-20 22:06:30,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 22:06:30,844 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1255 transitions. [2020-07-20 22:06:30,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-07-20 22:06:30,850 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:06:30,850 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-20 22:06:31,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:06:31,064 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:06:31,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:06:31,065 INFO L82 PathProgramCache]: Analyzing trace with hash -931508684, now seen corresponding path program 1 times [2020-07-20 22:06:31,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:06:31,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1478877024] [2020-07-20 22:06:31,067 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 22:06:31,175 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:06:31,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:06:31,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 22:06:31,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:06:31,224 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-07-20 22:06:31,224 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:06:31,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1478877024] [2020-07-20 22:06:31,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:06:31,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:06:31,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000631232] [2020-07-20 22:06:31,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:06:31,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:06:31,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:06:31,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:06:31,227 INFO L87 Difference]: Start difference. First operand 888 states and 1255 transitions. Second operand 3 states. [2020-07-20 22:06:32,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:06:32,008 INFO L93 Difference]: Finished difference Result 1033 states and 1428 transitions. [2020-07-20 22:06:32,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:06:32,010 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 221 [2020-07-20 22:06:32,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:06:32,018 INFO L225 Difference]: With dead ends: 1033 [2020-07-20 22:06:32,019 INFO L226 Difference]: Without dead ends: 1031 [2020-07-20 22:06:32,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 219 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 22:06:32,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2020-07-20 22:06:32,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 888. [2020-07-20 22:06:32,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 888 states. [2020-07-20 22:06:32,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1254 transitions. [2020-07-20 22:06:32,062 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1254 transitions. Word has length 221 [2020-07-20 22:06:32,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:06:32,063 INFO L479 AbstractCegarLoop]: Abstraction has 888 states and 1254 transitions. [2020-07-20 22:06:32,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:06:32,063 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1254 transitions. [2020-07-20 22:06:32,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-07-20 22:06:32,068 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:06:32,068 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-20 22:06:32,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:06:32,282 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:06:32,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:06:32,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1468343974, now seen corresponding path program 1 times [2020-07-20 22:06:32,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:06:32,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784107086] [2020-07-20 22:06:32,283 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 22:06:32,404 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:06:32,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:06:32,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 22:06:32,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:06:32,489 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 146 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:06:32,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 22:06:32,656 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 146 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:06:32,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784107086] [2020-07-20 22:06:32,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 22:06:32,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-20 22:06:32,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98966160] [2020-07-20 22:06:32,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 22:06:32,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:06:32,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 22:06:32,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 22:06:32,659 INFO L87 Difference]: Start difference. First operand 888 states and 1254 transitions. Second operand 6 states. [2020-07-20 22:06:33,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:06:33,676 INFO L93 Difference]: Finished difference Result 1794 states and 2555 transitions. [2020-07-20 22:06:33,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 22:06:33,677 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 241 [2020-07-20 22:06:33,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:06:33,686 INFO L225 Difference]: With dead ends: 1794 [2020-07-20 22:06:33,686 INFO L226 Difference]: Without dead ends: 912 [2020-07-20 22:06:33,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 478 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-20 22:06:33,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2020-07-20 22:06:33,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 892. [2020-07-20 22:06:33,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 892 states. [2020-07-20 22:06:33,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1053 transitions. [2020-07-20 22:06:33,731 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1053 transitions. Word has length 241 [2020-07-20 22:06:33,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:06:33,732 INFO L479 AbstractCegarLoop]: Abstraction has 892 states and 1053 transitions. [2020-07-20 22:06:33,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 22:06:33,732 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1053 transitions. [2020-07-20 22:06:33,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-07-20 22:06:33,736 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:06:33,737 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 22:06:33,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:06:33,951 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:06:33,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:06:33,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1948168109, now seen corresponding path program 1 times [2020-07-20 22:06:33,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:06:33,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342563932] [2020-07-20 22:06:33,952 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 22:06:34,127 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:06:34,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:06:34,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 22:06:34,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:06:34,188 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-07-20 22:06:34,189 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:06:34,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342563932] [2020-07-20 22:06:34,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:06:34,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:06:34,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992904605] [2020-07-20 22:06:34,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:06:34,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:06:34,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:06:34,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:06:34,192 INFO L87 Difference]: Start difference. First operand 892 states and 1053 transitions. Second operand 3 states. [2020-07-20 22:06:34,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:06:34,758 INFO L93 Difference]: Finished difference Result 1776 states and 2103 transitions. [2020-07-20 22:06:34,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:06:34,765 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 242 [2020-07-20 22:06:34,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:06:34,766 INFO L225 Difference]: With dead ends: 1776 [2020-07-20 22:06:34,766 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 22:06:34,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 240 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 22:06:34,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 22:06:34,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 22:06:34,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 22:06:34,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 22:06:34,770 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 242 [2020-07-20 22:06:34,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:06:34,771 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 22:06:34,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:06:34,771 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 22:06:34,771 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 22:06:34,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:06:34,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 22:06:35,458 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 32 [2020-07-20 22:06:35,571 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 22:06:35,572 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a10~0 |old(~a10~0)|) (<= |old(~a10~0)| ~a10~0)) [2020-07-20 22:06:35,572 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 22:06:35,572 INFO L268 CegarLoopResult]: For program point L465(lines 465 572) no Hoare annotation was computed. [2020-07-20 22:06:35,572 INFO L268 CegarLoopResult]: For program point L201-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,573 INFO L268 CegarLoopResult]: For program point L168-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,573 INFO L268 CegarLoopResult]: For program point L135-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,573 INFO L268 CegarLoopResult]: For program point L102-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,573 INFO L268 CegarLoopResult]: For program point L69-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,573 INFO L268 CegarLoopResult]: For program point L36-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,573 INFO L268 CegarLoopResult]: For program point L499(lines 499 572) no Hoare annotation was computed. [2020-07-20 22:06:35,573 INFO L268 CegarLoopResult]: For program point L301(lines 301 572) no Hoare annotation was computed. [2020-07-20 22:06:35,574 INFO L268 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2020-07-20 22:06:35,574 INFO L268 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2020-07-20 22:06:35,574 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-07-20 22:06:35,574 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-07-20 22:06:35,574 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-07-20 22:06:35,574 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-07-20 22:06:35,574 INFO L268 CegarLoopResult]: For program point L335(lines 335 572) no Hoare annotation was computed. [2020-07-20 22:06:35,574 INFO L268 CegarLoopResult]: For program point L236(lines 236 572) no Hoare annotation was computed. [2020-07-20 22:06:35,574 INFO L268 CegarLoopResult]: For program point L534(lines 534 572) no Hoare annotation was computed. [2020-07-20 22:06:35,574 INFO L268 CegarLoopResult]: For program point L171-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,575 INFO L268 CegarLoopResult]: For program point L138-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,575 INFO L268 CegarLoopResult]: For program point L105-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,575 INFO L268 CegarLoopResult]: For program point L72-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,575 INFO L268 CegarLoopResult]: For program point L39-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,575 INFO L268 CegarLoopResult]: For program point L436(lines 436 572) no Hoare annotation was computed. [2020-07-20 22:06:35,575 INFO L268 CegarLoopResult]: For program point L403(lines 403 572) no Hoare annotation was computed. [2020-07-20 22:06:35,575 INFO L268 CegarLoopResult]: For program point L370(lines 370 572) no Hoare annotation was computed. [2020-07-20 22:06:35,576 INFO L268 CegarLoopResult]: For program point L271(lines 271 572) no Hoare annotation was computed. [2020-07-20 22:06:35,576 INFO L268 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2020-07-20 22:06:35,576 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-07-20 22:06:35,576 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-07-20 22:06:35,576 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-07-20 22:06:35,576 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-07-20 22:06:35,576 INFO L268 CegarLoopResult]: For program point L569(lines 569 572) no Hoare annotation was computed. [2020-07-20 22:06:35,576 INFO L268 CegarLoopResult]: For program point L239(lines 239 572) no Hoare annotation was computed. [2020-07-20 22:06:35,577 INFO L268 CegarLoopResult]: For program point L504(lines 504 572) no Hoare annotation was computed. [2020-07-20 22:06:35,577 INFO L268 CegarLoopResult]: For program point L471(lines 471 572) no Hoare annotation was computed. [2020-07-20 22:06:35,577 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 124) no Hoare annotation was computed. [2020-07-20 22:06:35,577 INFO L268 CegarLoopResult]: For program point L306(lines 306 572) no Hoare annotation was computed. [2020-07-20 22:06:35,577 INFO L268 CegarLoopResult]: For program point L174-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,577 INFO L268 CegarLoopResult]: For program point L141-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,577 INFO L268 CegarLoopResult]: For program point L108-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,577 INFO L268 CegarLoopResult]: For program point L75-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,578 INFO L268 CegarLoopResult]: For program point L42-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,578 INFO L268 CegarLoopResult]: For program point L340(lines 340 572) no Hoare annotation was computed. [2020-07-20 22:06:35,578 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-20 22:06:35,578 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-07-20 22:06:35,578 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-07-20 22:06:35,578 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-07-20 22:06:35,578 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-07-20 22:06:35,578 INFO L268 CegarLoopResult]: For program point L540(lines 540 572) no Hoare annotation was computed. [2020-07-20 22:06:35,578 INFO L268 CegarLoopResult]: For program point L408(lines 408 572) no Hoare annotation was computed. [2020-07-20 22:06:35,579 INFO L268 CegarLoopResult]: For program point L375(lines 375 572) no Hoare annotation was computed. [2020-07-20 22:06:35,579 INFO L268 CegarLoopResult]: For program point L210(lines 210 572) no Hoare annotation was computed. [2020-07-20 22:06:35,579 INFO L268 CegarLoopResult]: For program point L177-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,579 INFO L268 CegarLoopResult]: For program point L144-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,579 INFO L268 CegarLoopResult]: For program point L111-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,579 INFO L268 CegarLoopResult]: For program point L78-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,579 INFO L268 CegarLoopResult]: For program point L45-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,580 INFO L268 CegarLoopResult]: For program point L442(lines 442 572) no Hoare annotation was computed. [2020-07-20 22:06:35,580 INFO L268 CegarLoopResult]: For program point L277(lines 277 572) no Hoare annotation was computed. [2020-07-20 22:06:35,580 INFO L268 CegarLoopResult]: For program point L244(lines 244 572) no Hoare annotation was computed. [2020-07-20 22:06:35,580 INFO L268 CegarLoopResult]: For program point L178(line 178) no Hoare annotation was computed. [2020-07-20 22:06:35,580 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-07-20 22:06:35,580 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-07-20 22:06:35,580 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-07-20 22:06:35,580 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-20 22:06:35,581 INFO L268 CegarLoopResult]: For program point L509(lines 509 572) no Hoare annotation was computed. [2020-07-20 22:06:35,581 INFO L268 CegarLoopResult]: For program point L476(lines 476 572) no Hoare annotation was computed. [2020-07-20 22:06:35,581 INFO L268 CegarLoopResult]: For program point L378(lines 378 572) no Hoare annotation was computed. [2020-07-20 22:06:35,581 INFO L268 CegarLoopResult]: For program point L345(lines 345 572) no Hoare annotation was computed. [2020-07-20 22:06:35,581 INFO L268 CegarLoopResult]: For program point L312(lines 312 572) no Hoare annotation was computed. [2020-07-20 22:06:35,581 INFO L268 CegarLoopResult]: For program point L180-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,581 INFO L268 CegarLoopResult]: For program point L147-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,581 INFO L268 CegarLoopResult]: For program point L114-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,581 INFO L268 CegarLoopResult]: For program point L81-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,582 INFO L268 CegarLoopResult]: For program point L48-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,582 INFO L268 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2020-07-20 22:06:35,582 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-07-20 22:06:35,582 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-20 22:06:35,582 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-07-20 22:06:35,582 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-07-20 22:06:35,582 INFO L268 CegarLoopResult]: For program point L545(lines 545 572) no Hoare annotation was computed. [2020-07-20 22:06:35,582 INFO L268 CegarLoopResult]: For program point L215(lines 215 572) no Hoare annotation was computed. [2020-07-20 22:06:35,583 INFO L268 CegarLoopResult]: For program point L414(lines 414 572) no Hoare annotation was computed. [2020-07-20 22:06:35,583 INFO L268 CegarLoopResult]: For program point L249(lines 249 572) no Hoare annotation was computed. [2020-07-20 22:06:35,583 INFO L268 CegarLoopResult]: For program point L183-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,583 INFO L268 CegarLoopResult]: For program point L150-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,583 INFO L268 CegarLoopResult]: For program point L117-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,583 INFO L268 CegarLoopResult]: For program point L84-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,583 INFO L268 CegarLoopResult]: For program point L51-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,584 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,584 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,584 INFO L268 CegarLoopResult]: For program point L514(lines 514 572) no Hoare annotation was computed. [2020-07-20 22:06:35,584 INFO L268 CegarLoopResult]: For program point L481(lines 481 572) no Hoare annotation was computed. [2020-07-20 22:06:35,584 INFO L268 CegarLoopResult]: For program point L448(lines 448 572) no Hoare annotation was computed. [2020-07-20 22:06:35,584 INFO L268 CegarLoopResult]: For program point L283(lines 283 572) no Hoare annotation was computed. [2020-07-20 22:06:35,584 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-07-20 22:06:35,584 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-07-20 22:06:35,585 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-07-20 22:06:35,585 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-07-20 22:06:35,585 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-07-20 22:06:35,585 INFO L268 CegarLoopResult]: For program point L548(lines 548 572) no Hoare annotation was computed. [2020-07-20 22:06:35,585 INFO L268 CegarLoopResult]: For program point L383(lines 383 572) no Hoare annotation was computed. [2020-07-20 22:06:35,585 INFO L268 CegarLoopResult]: For program point L317(lines 317 572) no Hoare annotation was computed. [2020-07-20 22:06:35,585 INFO L268 CegarLoopResult]: For program point L351(lines 351 572) no Hoare annotation was computed. [2020-07-20 22:06:35,585 INFO L268 CegarLoopResult]: For program point L186-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,585 INFO L268 CegarLoopResult]: For program point L153-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,585 INFO L268 CegarLoopResult]: For program point L120-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,586 INFO L268 CegarLoopResult]: For program point L87-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,586 INFO L268 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-07-20 22:06:35,586 INFO L268 CegarLoopResult]: For program point L54-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,586 INFO L268 CegarLoopResult]: For program point L21-2(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,586 INFO L268 CegarLoopResult]: For program point L517(lines 517 572) no Hoare annotation was computed. [2020-07-20 22:06:35,586 INFO L268 CegarLoopResult]: For program point L286(lines 286 572) no Hoare annotation was computed. [2020-07-20 22:06:35,586 INFO L268 CegarLoopResult]: For program point L220(lines 220 572) no Hoare annotation was computed. [2020-07-20 22:06:35,587 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-20 22:06:35,587 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-07-20 22:06:35,587 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-07-20 22:06:35,587 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-07-20 22:06:35,587 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-07-20 22:06:35,587 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-20 22:06:35,588 INFO L268 CegarLoopResult]: For program point L419(lines 419 572) no Hoare annotation was computed. [2020-07-20 22:06:35,588 INFO L268 CegarLoopResult]: For program point L320(lines 320 572) no Hoare annotation was computed. [2020-07-20 22:06:35,588 INFO L268 CegarLoopResult]: For program point L254(lines 254 572) no Hoare annotation was computed. [2020-07-20 22:06:35,588 INFO L268 CegarLoopResult]: For program point L354(lines 354 572) no Hoare annotation was computed. [2020-07-20 22:06:35,588 INFO L268 CegarLoopResult]: For program point L189-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,588 INFO L268 CegarLoopResult]: For program point L156-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,588 INFO L268 CegarLoopResult]: For program point L123-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,588 INFO L268 CegarLoopResult]: For program point L90-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,588 INFO L268 CegarLoopResult]: For program point L57-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,589 INFO L268 CegarLoopResult]: For program point L24-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,589 INFO L268 CegarLoopResult]: For program point L487(lines 487 572) no Hoare annotation was computed. [2020-07-20 22:06:35,589 INFO L268 CegarLoopResult]: For program point L454(lines 454 572) no Hoare annotation was computed. [2020-07-20 22:06:35,589 INFO L268 CegarLoopResult]: For program point L388(lines 388 572) no Hoare annotation was computed. [2020-07-20 22:06:35,589 INFO L268 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2020-07-20 22:06:35,589 INFO L268 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2020-07-20 22:06:35,589 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-07-20 22:06:35,590 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-07-20 22:06:35,590 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-07-20 22:06:35,590 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-20 22:06:35,590 INFO L268 CegarLoopResult]: For program point L554(lines 554 572) no Hoare annotation was computed. [2020-07-20 22:06:35,590 INFO L268 CegarLoopResult]: For program point L323(lines 323 572) no Hoare annotation was computed. [2020-07-20 22:06:35,590 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 20 574) the Hoare annotation is: (let ((.cse1 (<= ~a10~0 |old(~a10~0)|)) (.cse2 (<= |old(~a10~0)| ~a10~0))) (let ((.cse0 (and .cse1 .cse2))) (and (or .cse0 (not (<= 3 |old(~a10~0)|))) (or (and .cse1 (<= 7 ~a19~0) .cse2) (not (<= 7 |old(~a19~0)|)) (not (<= |old(~a10~0)| 2))) (or .cse0 (not (<= |old(~a10~0)| 0))) (or (<= 8 ~a19~0) (not (<= 8 |old(~a19~0)|)) (not (<= 2 |old(~a10~0)|)))))) [2020-07-20 22:06:35,590 INFO L268 CegarLoopResult]: For program point L357(lines 357 572) no Hoare annotation was computed. [2020-07-20 22:06:35,591 INFO L268 CegarLoopResult]: For program point L291(lines 291 572) no Hoare annotation was computed. [2020-07-20 22:06:35,591 INFO L268 CegarLoopResult]: For program point L225(lines 225 572) no Hoare annotation was computed. [2020-07-20 22:06:35,591 INFO L268 CegarLoopResult]: For program point L192-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,591 INFO L268 CegarLoopResult]: For program point L159-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,591 INFO L268 CegarLoopResult]: For program point L126-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,591 INFO L268 CegarLoopResult]: For program point L93-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,591 INFO L268 CegarLoopResult]: For program point L60-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,591 INFO L268 CegarLoopResult]: For program point L27-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,592 INFO L268 CegarLoopResult]: For program point L523(lines 523 572) no Hoare annotation was computed. [2020-07-20 22:06:35,592 INFO L268 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2020-07-20 22:06:35,592 INFO L268 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-07-20 22:06:35,592 INFO L268 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-07-20 22:06:35,592 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-07-20 22:06:35,592 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-07-20 22:06:35,592 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-07-20 22:06:35,593 INFO L268 CegarLoopResult]: For program point L557(lines 557 572) no Hoare annotation was computed. [2020-07-20 22:06:35,593 INFO L268 CegarLoopResult]: For program point L425(lines 425 572) no Hoare annotation was computed. [2020-07-20 22:06:35,593 INFO L268 CegarLoopResult]: For program point L326(lines 326 572) no Hoare annotation was computed. [2020-07-20 22:06:35,593 INFO L268 CegarLoopResult]: For program point L260(lines 260 572) no Hoare annotation was computed. [2020-07-20 22:06:35,593 INFO L268 CegarLoopResult]: For program point L393(lines 393 572) no Hoare annotation was computed. [2020-07-20 22:06:35,593 INFO L268 CegarLoopResult]: For program point L360(lines 360 572) no Hoare annotation was computed. [2020-07-20 22:06:35,593 INFO L268 CegarLoopResult]: For program point L195-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,593 INFO L268 CegarLoopResult]: For program point L162-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,593 INFO L268 CegarLoopResult]: For program point L129-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,594 INFO L268 CegarLoopResult]: For program point L96-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,594 INFO L268 CegarLoopResult]: For program point L63-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,594 INFO L268 CegarLoopResult]: For program point L30-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,594 INFO L268 CegarLoopResult]: For program point L526(lines 526 572) no Hoare annotation was computed. [2020-07-20 22:06:35,594 INFO L268 CegarLoopResult]: For program point L493(lines 493 572) no Hoare annotation was computed. [2020-07-20 22:06:35,594 INFO L268 CegarLoopResult]: For program point L460(lines 460 572) no Hoare annotation was computed. [2020-07-20 22:06:35,594 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-07-20 22:06:35,594 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-07-20 22:06:35,595 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-07-20 22:06:35,595 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-07-20 22:06:35,595 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-07-20 22:06:35,595 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-20 22:06:35,595 INFO L268 CegarLoopResult]: For program point L329(lines 329 572) no Hoare annotation was computed. [2020-07-20 22:06:35,595 INFO L268 CegarLoopResult]: For program point L296(lines 296 572) no Hoare annotation was computed. [2020-07-20 22:06:35,595 INFO L268 CegarLoopResult]: For program point L231(lines 231 572) no Hoare annotation was computed. [2020-07-20 22:06:35,595 INFO L268 CegarLoopResult]: For program point L198-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,595 INFO L268 CegarLoopResult]: For program point L165-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,595 INFO L268 CegarLoopResult]: For program point L132-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,595 INFO L268 CegarLoopResult]: For program point L99-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,595 INFO L268 CegarLoopResult]: For program point L66-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,595 INFO L268 CegarLoopResult]: For program point L33-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:06:35,596 INFO L268 CegarLoopResult]: For program point L529(lines 529 572) no Hoare annotation was computed. [2020-07-20 22:06:35,596 INFO L268 CegarLoopResult]: For program point L430(lines 430 572) no Hoare annotation was computed. [2020-07-20 22:06:35,596 INFO L268 CegarLoopResult]: For program point L265(lines 265 572) no Hoare annotation was computed. [2020-07-20 22:06:35,596 INFO L268 CegarLoopResult]: For program point L199(line 199) no Hoare annotation was computed. [2020-07-20 22:06:35,596 INFO L268 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2020-07-20 22:06:35,596 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-07-20 22:06:35,596 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-07-20 22:06:35,596 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-07-20 22:06:35,596 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-20 22:06:35,596 INFO L268 CegarLoopResult]: For program point L563(lines 563 572) no Hoare annotation was computed. [2020-07-20 22:06:35,596 INFO L268 CegarLoopResult]: For program point L398(lines 398 572) no Hoare annotation was computed. [2020-07-20 22:06:35,596 INFO L268 CegarLoopResult]: For program point L365(lines 365 572) no Hoare annotation was computed. [2020-07-20 22:06:35,596 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 22:06:35,597 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a10~0 0) (<= 9 ~a19~0)) [2020-07-20 22:06:35,597 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 22:06:35,597 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 22:06:35,597 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 576 592) the Hoare annotation is: (or (not (<= |old(~a10~0)| 0)) (not (<= 9 |old(~a19~0)|)) (and (<= 9 ~a19~0) (<= ~a10~0 |old(~a10~0)|) (<= |old(~a10~0)| ~a10~0))) [2020-07-20 22:06:35,597 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 576 592) no Hoare annotation was computed. [2020-07-20 22:06:35,597 INFO L264 CegarLoopResult]: At program point L590(line 590) the Hoare annotation is: (or (<= ~a10~0 0) (<= 7 ~a19~0) (not (<= |old(~a10~0)| 0)) (not (<= 9 |old(~a19~0)|)) (<= 3 ~a10~0)) [2020-07-20 22:06:35,597 INFO L268 CegarLoopResult]: For program point L590-1(line 590) no Hoare annotation was computed. [2020-07-20 22:06:35,598 INFO L268 CegarLoopResult]: For program point L587(line 587) no Hoare annotation was computed. [2020-07-20 22:06:35,598 INFO L264 CegarLoopResult]: At program point L582-2(lines 582 591) the Hoare annotation is: (or (<= ~a10~0 0) (<= 7 ~a19~0) (not (<= |old(~a10~0)| 0)) (not (<= 9 |old(~a19~0)|)) (<= 3 ~a10~0)) [2020-07-20 22:06:35,598 INFO L268 CegarLoopResult]: For program point L582-3(lines 576 592) no Hoare annotation was computed. [2020-07-20 22:06:35,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 10:06:35 BoogieIcfgContainer [2020-07-20 22:06:35,618 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 22:06:35,620 INFO L168 Benchmark]: Toolchain (without parser) took 13677.79 ms. Allocated memory was 138.4 MB in the beginning and 400.6 MB in the end (delta: 262.1 MB). Free memory was 101.9 MB in the beginning and 123.8 MB in the end (delta: -22.0 MB). Peak memory consumption was 240.2 MB. Max. memory is 7.1 GB. [2020-07-20 22:06:35,620 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-20 22:06:35,621 INFO L168 Benchmark]: CACSL2BoogieTranslator took 768.92 ms. Allocated memory was 138.4 MB in the beginning and 206.0 MB in the end (delta: 67.6 MB). Free memory was 101.6 MB in the beginning and 173.2 MB in the end (delta: -71.5 MB). Peak memory consumption was 36.6 MB. Max. memory is 7.1 GB. [2020-07-20 22:06:35,622 INFO L168 Benchmark]: Boogie Preprocessor took 99.89 ms. Allocated memory is still 206.0 MB. Free memory was 173.2 MB in the beginning and 168.3 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2020-07-20 22:06:35,623 INFO L168 Benchmark]: RCFGBuilder took 1409.25 ms. Allocated memory was 206.0 MB in the beginning and 239.1 MB in the end (delta: 33.0 MB). Free memory was 168.3 MB in the beginning and 184.4 MB in the end (delta: -16.1 MB). Peak memory consumption was 83.8 MB. Max. memory is 7.1 GB. [2020-07-20 22:06:35,624 INFO L168 Benchmark]: TraceAbstraction took 11394.20 ms. Allocated memory was 239.1 MB in the beginning and 400.6 MB in the end (delta: 161.5 MB). Free memory was 182.9 MB in the beginning and 123.8 MB in the end (delta: 59.1 MB). Peak memory consumption was 220.6 MB. Max. memory is 7.1 GB. [2020-07-20 22:06:35,628 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 768.92 ms. Allocated memory was 138.4 MB in the beginning and 206.0 MB in the end (delta: 67.6 MB). Free memory was 101.6 MB in the beginning and 173.2 MB in the end (delta: -71.5 MB). Peak memory consumption was 36.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 99.89 ms. Allocated memory is still 206.0 MB. Free memory was 173.2 MB in the beginning and 168.3 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1409.25 ms. Allocated memory was 206.0 MB in the beginning and 239.1 MB in the end (delta: 33.0 MB). Free memory was 168.3 MB in the beginning and 184.4 MB in the end (delta: -16.1 MB). Peak memory consumption was 83.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11394.20 ms. Allocated memory was 239.1 MB in the beginning and 400.6 MB in the end (delta: 161.5 MB). Free memory was 182.9 MB in the beginning and 123.8 MB in the end (delta: 59.1 MB). Peak memory consumption was 220.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 124]: 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: (((a10 <= 0 || 7 <= a19) || !(\old(a10) <= 0)) || !(9 <= \old(a19))) || 3 <= a10 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.6s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 6.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 499 SDtfs, 1502 SDslu, 128 SDs, 0 SdLazy, 3643 SolverSat, 902 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1824 GetRequests, 1800 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=892occurred 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: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 741 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 32 PreInvPairs, 44 NumberOfFragments, 126 HoareAnnotationTreeSize, 32 FomulaSimplifications, 1098 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 7 FomulaSimplificationsInter, 456 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 1367 NumberOfCodeBlocks, 1367 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 1812 ConstructedInterpolants, 0 QuantifiedInterpolants, 845420 SizeOfPredicates, 13 NumberOfNonLiveVariables, 2579 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 1011/1019 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...