/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 NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 11:33:21,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 11:33:21,411 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 11:33:21,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 11:33:21,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 11:33:21,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 11:33:21,428 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 11:33:21,430 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 11:33:21,432 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 11:33:21,433 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 11:33:21,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 11:33:21,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 11:33:21,435 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 11:33:21,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 11:33:21,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 11:33:21,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 11:33:21,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 11:33:21,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 11:33:21,443 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 11:33:21,445 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 11:33:21,447 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 11:33:21,448 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 11:33:21,449 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 11:33:21,450 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 11:33:21,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 11:33:21,461 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 11:33:21,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 11:33:21,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 11:33:21,463 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 11:33:21,478 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 11:33:21,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 11:33:21,479 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 11:33:21,479 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 11:33:21,480 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 11:33:21,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 11:33:21,480 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 11:33:21,480 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 11:33:21,480 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 11:33:21,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 11:33:21,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 11:33:21,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 11:33:21,481 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 11:33:21,481 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 11:33:21,482 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 11:33:21,482 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 11:33:21,482 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 11:33:21,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 11:33:21,482 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 11:33:21,483 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 11:33:21,483 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 11:33:21,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:33:21,486 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 11:33:21,486 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 11:33:21,487 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 11:33:21,487 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 11:33:21,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:33:21,487 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 11:33:21,487 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 11:33:21,488 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 -> NOT_INCREMENTALLY [2020-07-20 11:33:21,752 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 11:33:21,770 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 11:33:21,773 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 11:33:21,774 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 11:33:21,775 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 11:33:21,776 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label31.c [2020-07-20 11:33:21,853 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06a6597fb/14375dcf974c47d8b6feae9f60e2fd82/FLAG10a4279f6 [2020-07-20 11:33:22,400 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 11:33:22,400 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label31.c [2020-07-20 11:33:22,411 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06a6597fb/14375dcf974c47d8b6feae9f60e2fd82/FLAG10a4279f6 [2020-07-20 11:33:22,660 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06a6597fb/14375dcf974c47d8b6feae9f60e2fd82 [2020-07-20 11:33:22,668 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 11:33:22,670 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 11:33:22,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 11:33:22,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 11:33:22,675 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 11:33:22,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:33:22" (1/1) ... [2020-07-20 11:33:22,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5957ebad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:33:22, skipping insertion in model container [2020-07-20 11:33:22,679 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:33:22" (1/1) ... [2020-07-20 11:33:22,685 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 11:33:22,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 11:33:23,187 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:33:23,195 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 11:33:23,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:33:23,423 INFO L208 MainTranslator]: Completed translation [2020-07-20 11:33:23,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:33:23 WrapperNode [2020-07-20 11:33:23,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 11:33:23,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 11:33:23,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 11:33:23,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 11:33:23,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:33:23" (1/1) ... [2020-07-20 11:33:23,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:33:23" (1/1) ... [2020-07-20 11:33:23,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:33:23" (1/1) ... [2020-07-20 11:33:23,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:33:23" (1/1) ... [2020-07-20 11:33:23,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:33:23" (1/1) ... [2020-07-20 11:33:23,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:33:23" (1/1) ... [2020-07-20 11:33:23,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:33:23" (1/1) ... [2020-07-20 11:33:23,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 11:33:23,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 11:33:23,533 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 11:33:23,533 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 11:33:23,534 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:33:23" (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 11:33:23,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 11:33:23,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 11:33:23,608 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-20 11:33:23,608 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 11:33:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-20 11:33:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 11:33:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 11:33:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 11:33:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 11:33:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 11:33:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 11:33:24,739 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 11:33:24,740 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 11:33:24,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:33:24 BoogieIcfgContainer [2020-07-20 11:33:24,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 11:33:24,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 11:33:24,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 11:33:24,754 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 11:33:24,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:33:22" (1/3) ... [2020-07-20 11:33:24,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56c4ed2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:33:24, skipping insertion in model container [2020-07-20 11:33:24,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:33:23" (2/3) ... [2020-07-20 11:33:24,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56c4ed2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:33:24, skipping insertion in model container [2020-07-20 11:33:24,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:33:24" (3/3) ... [2020-07-20 11:33:24,760 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label31.c [2020-07-20 11:33:24,771 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 11:33:24,782 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 11:33:24,796 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 11:33:24,825 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 11:33:24,825 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 11:33:24,825 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 11:33:24,826 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 11:33:24,826 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 11:33:24,826 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 11:33:24,826 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 11:33:24,826 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 11:33:24,846 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-07-20 11:33:24,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-07-20 11:33:24,857 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:33:24,858 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:33:24,859 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:33:24,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:33:24,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1379021910, now seen corresponding path program 1 times [2020-07-20 11:33:24,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:33:24,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471964012] [2020-07-20 11:33:24,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:33:25,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:33:25,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 11:33:25,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:33:25,108 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 11:33:25,109 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:33:25,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471964012] [2020-07-20 11:33:25,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:33:25,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:33:25,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578128403] [2020-07-20 11:33:25,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:33:25,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:33:25,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:33:25,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:33:25,135 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 3 states. [2020-07-20 11:33:25,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:33:25,967 INFO L93 Difference]: Finished difference Result 572 states and 963 transitions. [2020-07-20 11:33:25,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:33:25,969 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-07-20 11:33:25,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:33:25,990 INFO L225 Difference]: With dead ends: 572 [2020-07-20 11:33:25,990 INFO L226 Difference]: Without dead ends: 278 [2020-07-20 11:33:26,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 96 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 11:33:26,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-07-20 11:33:26,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2020-07-20 11:33:26,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-07-20 11:33:26,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 394 transitions. [2020-07-20 11:33:26,116 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 394 transitions. Word has length 98 [2020-07-20 11:33:26,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:33:26,117 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 394 transitions. [2020-07-20 11:33:26,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:33:26,118 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 394 transitions. [2020-07-20 11:33:26,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-07-20 11:33:26,124 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:33:26,124 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2020-07-20 11:33:26,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:33:26,331 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:33:26,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:33:26,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1132011565, now seen corresponding path program 1 times [2020-07-20 11:33:26,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:33:26,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792077256] [2020-07-20 11:33:26,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:33:26,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:33:26,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 11:33:26,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:33:26,520 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:33:26,520 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:33:26,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792077256] [2020-07-20 11:33:26,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:33:26,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:33:26,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572137762] [2020-07-20 11:33:26,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:33:26,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:33:26,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:33:26,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:33:26,526 INFO L87 Difference]: Start difference. First operand 278 states and 394 transitions. Second operand 5 states. [2020-07-20 11:33:27,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:33:27,330 INFO L93 Difference]: Finished difference Result 842 states and 1218 transitions. [2020-07-20 11:33:27,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 11:33:27,331 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-07-20 11:33:27,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:33:27,337 INFO L225 Difference]: With dead ends: 842 [2020-07-20 11:33:27,337 INFO L226 Difference]: Without dead ends: 570 [2020-07-20 11:33:27,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-20 11:33:27,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2020-07-20 11:33:27,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 556. [2020-07-20 11:33:27,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-07-20 11:33:27,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 784 transitions. [2020-07-20 11:33:27,366 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 784 transitions. Word has length 108 [2020-07-20 11:33:27,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:33:27,367 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 784 transitions. [2020-07-20 11:33:27,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:33:27,367 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 784 transitions. [2020-07-20 11:33:27,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-07-20 11:33:27,372 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:33:27,372 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2020-07-20 11:33:27,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:33:27,587 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:33:27,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:33:27,588 INFO L82 PathProgramCache]: Analyzing trace with hash -623833434, now seen corresponding path program 1 times [2020-07-20 11:33:27,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:33:27,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680065589] [2020-07-20 11:33:27,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:33:27,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:33:27,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:33:27,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:33:27,788 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:33:27,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:33:27,884 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:33:27,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680065589] [2020-07-20 11:33:27,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:33:27,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-07-20 11:33:27,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398422647] [2020-07-20 11:33:27,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 11:33:27,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:33:27,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 11:33:27,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-07-20 11:33:27,887 INFO L87 Difference]: Start difference. First operand 556 states and 784 transitions. Second operand 8 states. [2020-07-20 11:33:30,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:33:30,041 INFO L93 Difference]: Finished difference Result 2270 states and 3383 transitions. [2020-07-20 11:33:30,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 11:33:30,042 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 128 [2020-07-20 11:33:30,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:33:30,063 INFO L225 Difference]: With dead ends: 2270 [2020-07-20 11:33:30,064 INFO L226 Difference]: Without dead ends: 1720 [2020-07-20 11:33:30,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-07-20 11:33:30,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1720 states. [2020-07-20 11:33:30,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1720 to 1390. [2020-07-20 11:33:30,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1390 states. [2020-07-20 11:33:30,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 1826 transitions. [2020-07-20 11:33:30,152 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 1826 transitions. Word has length 128 [2020-07-20 11:33:30,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:33:30,153 INFO L479 AbstractCegarLoop]: Abstraction has 1390 states and 1826 transitions. [2020-07-20 11:33:30,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 11:33:30,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 1826 transitions. [2020-07-20 11:33:30,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-07-20 11:33:30,162 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:33:30,162 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-07-20 11:33:30,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:33:30,376 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:33:30,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:33:30,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1632168509, now seen corresponding path program 1 times [2020-07-20 11:33:30,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:33:30,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962961919] [2020-07-20 11:33:30,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:33:30,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:33:30,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:33:30,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:33:30,539 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-20 11:33:30,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:33:30,614 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 54 proven. 19 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-07-20 11:33:30,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962961919] [2020-07-20 11:33:30,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:33:30,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-20 11:33:30,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557826823] [2020-07-20 11:33:30,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 11:33:30,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:33:30,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 11:33:30,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 11:33:30,617 INFO L87 Difference]: Start difference. First operand 1390 states and 1826 transitions. Second operand 7 states. [2020-07-20 11:33:32,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:33:32,169 INFO L93 Difference]: Finished difference Result 4669 states and 6466 transitions. [2020-07-20 11:33:32,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 11:33:32,169 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 148 [2020-07-20 11:33:32,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:33:32,193 INFO L225 Difference]: With dead ends: 4669 [2020-07-20 11:33:32,194 INFO L226 Difference]: Without dead ends: 3289 [2020-07-20 11:33:32,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 291 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-07-20 11:33:32,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2020-07-20 11:33:32,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 2925. [2020-07-20 11:33:32,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2925 states. [2020-07-20 11:33:32,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 3785 transitions. [2020-07-20 11:33:32,356 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 3785 transitions. Word has length 148 [2020-07-20 11:33:32,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:33:32,357 INFO L479 AbstractCegarLoop]: Abstraction has 2925 states and 3785 transitions. [2020-07-20 11:33:32,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 11:33:32,358 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 3785 transitions. [2020-07-20 11:33:32,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-07-20 11:33:32,372 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:33:32,372 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2020-07-20 11:33:32,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:33:32,586 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:33:32,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:33:32,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1534770869, now seen corresponding path program 1 times [2020-07-20 11:33:32,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:33:32,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278898000] [2020-07-20 11:33:32,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:33:32,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:33:32,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:33:32,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:33:32,770 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-07-20 11:33:32,771 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:33:32,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278898000] [2020-07-20 11:33:32,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:33:32,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:33:32,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65814698] [2020-07-20 11:33:32,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:33:32,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:33:32,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:33:32,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:33:32,774 INFO L87 Difference]: Start difference. First operand 2925 states and 3785 transitions. Second operand 3 states. [2020-07-20 11:33:33,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:33:33,379 INFO L93 Difference]: Finished difference Result 8038 states and 10693 transitions. [2020-07-20 11:33:33,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:33:33,379 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 152 [2020-07-20 11:33:33,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:33:33,413 INFO L225 Difference]: With dead ends: 8038 [2020-07-20 11:33:33,413 INFO L226 Difference]: Without dead ends: 5123 [2020-07-20 11:33:33,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 150 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 11:33:33,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5123 states. [2020-07-20 11:33:33,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5123 to 4170. [2020-07-20 11:33:33,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4170 states. [2020-07-20 11:33:33,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4170 states to 4170 states and 5480 transitions. [2020-07-20 11:33:33,584 INFO L78 Accepts]: Start accepts. Automaton has 4170 states and 5480 transitions. Word has length 152 [2020-07-20 11:33:33,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:33:33,586 INFO L479 AbstractCegarLoop]: Abstraction has 4170 states and 5480 transitions. [2020-07-20 11:33:33,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:33:33,586 INFO L276 IsEmpty]: Start isEmpty. Operand 4170 states and 5480 transitions. [2020-07-20 11:33:33,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-07-20 11:33:33,602 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:33:33,602 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2020-07-20 11:33:33,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:33:33,818 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:33:33,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:33:33,818 INFO L82 PathProgramCache]: Analyzing trace with hash 269767272, now seen corresponding path program 1 times [2020-07-20 11:33:33,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:33:33,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549106161] [2020-07-20 11:33:33,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:33:34,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:33:34,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:33:34,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:33:34,051 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-07-20 11:33:34,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:33:34,124 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 107 proven. 16 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-07-20 11:33:34,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549106161] [2020-07-20 11:33:34,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:33:34,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-20 11:33:34,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453824523] [2020-07-20 11:33:34,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 11:33:34,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:33:34,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 11:33:34,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 11:33:34,130 INFO L87 Difference]: Start difference. First operand 4170 states and 5480 transitions. Second operand 6 states. [2020-07-20 11:33:34,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:33:34,989 INFO L93 Difference]: Finished difference Result 7409 states and 9840 transitions. [2020-07-20 11:33:34,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 11:33:34,990 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 177 [2020-07-20 11:33:34,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:33:35,011 INFO L225 Difference]: With dead ends: 7409 [2020-07-20 11:33:35,011 INFO L226 Difference]: Without dead ends: 4484 [2020-07-20 11:33:35,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 350 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 11:33:35,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4484 states. [2020-07-20 11:33:35,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4484 to 3918. [2020-07-20 11:33:35,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3918 states. [2020-07-20 11:33:35,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3918 states to 3918 states and 5041 transitions. [2020-07-20 11:33:35,131 INFO L78 Accepts]: Start accepts. Automaton has 3918 states and 5041 transitions. Word has length 177 [2020-07-20 11:33:35,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:33:35,131 INFO L479 AbstractCegarLoop]: Abstraction has 3918 states and 5041 transitions. [2020-07-20 11:33:35,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 11:33:35,132 INFO L276 IsEmpty]: Start isEmpty. Operand 3918 states and 5041 transitions. [2020-07-20 11:33:35,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-07-20 11:33:35,144 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:33:35,144 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:33:35,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:33:35,359 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:33:35,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:33:35,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1715843109, now seen corresponding path program 1 times [2020-07-20 11:33:35,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:33:35,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682150654] [2020-07-20 11:33:35,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:33:35,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:33:35,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:33:35,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:33:35,508 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-07-20 11:33:35,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:33:35,602 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-07-20 11:33:35,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682150654] [2020-07-20 11:33:35,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:33:35,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-20 11:33:35,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308055739] [2020-07-20 11:33:35,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 11:33:35,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:33:35,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 11:33:35,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 11:33:35,606 INFO L87 Difference]: Start difference. First operand 3918 states and 5041 transitions. Second operand 6 states. [2020-07-20 11:33:36,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:33:36,767 INFO L93 Difference]: Finished difference Result 11529 states and 16127 transitions. [2020-07-20 11:33:36,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 11:33:36,768 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 185 [2020-07-20 11:33:36,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:33:36,814 INFO L225 Difference]: With dead ends: 11529 [2020-07-20 11:33:36,814 INFO L226 Difference]: Without dead ends: 7621 [2020-07-20 11:33:36,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 366 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 11:33:36,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7621 states. [2020-07-20 11:33:37,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7621 to 7214. [2020-07-20 11:33:37,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7214 states. [2020-07-20 11:33:37,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7214 states to 7214 states and 9244 transitions. [2020-07-20 11:33:37,086 INFO L78 Accepts]: Start accepts. Automaton has 7214 states and 9244 transitions. Word has length 185 [2020-07-20 11:33:37,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:33:37,086 INFO L479 AbstractCegarLoop]: Abstraction has 7214 states and 9244 transitions. [2020-07-20 11:33:37,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 11:33:37,087 INFO L276 IsEmpty]: Start isEmpty. Operand 7214 states and 9244 transitions. [2020-07-20 11:33:37,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-07-20 11:33:37,111 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:33:37,111 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:33:37,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:33:37,326 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:33:37,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:33:37,327 INFO L82 PathProgramCache]: Analyzing trace with hash 2145011220, now seen corresponding path program 1 times [2020-07-20 11:33:37,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:33:37,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518679272] [2020-07-20 11:33:37,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:33:37,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:33:37,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 11:33:37,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:33:37,550 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-07-20 11:33:37,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:33:37,621 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 121 proven. 26 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-07-20 11:33:37,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518679272] [2020-07-20 11:33:37,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:33:37,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-20 11:33:37,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074728024] [2020-07-20 11:33:37,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 11:33:37,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:33:37,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 11:33:37,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 11:33:37,623 INFO L87 Difference]: Start difference. First operand 7214 states and 9244 transitions. Second operand 7 states. [2020-07-20 11:33:39,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:33:39,045 INFO L93 Difference]: Finished difference Result 10930 states and 13967 transitions. [2020-07-20 11:33:39,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 11:33:39,046 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 187 [2020-07-20 11:33:39,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:33:39,046 INFO L225 Difference]: With dead ends: 10930 [2020-07-20 11:33:39,046 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 11:33:39,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-07-20 11:33:39,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 11:33:39,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 11:33:39,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 11:33:39,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 11:33:39,071 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 187 [2020-07-20 11:33:39,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:33:39,071 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 11:33:39,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 11:33:39,071 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 11:33:39,072 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 11:33:39,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:33:39,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 11:33:40,394 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 312 DAG size of output: 173 [2020-07-20 11:33:40,858 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 312 DAG size of output: 173 [2020-07-20 11:33:41,670 WARN L193 SmtUtils]: Spent 698.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 74 [2020-07-20 11:33:42,456 WARN L193 SmtUtils]: Spent 773.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 35 [2020-07-20 11:33:43,288 WARN L193 SmtUtils]: Spent 829.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 35 [2020-07-20 11:33:43,292 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 11:33:43,292 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a8~0 |old(~a8~0)|) (<= ~a16~0 |old(~a16~0)|) (= ~a7~0 |old(~a7~0)|) (<= ~a20~0 |old(~a20~0)|) (<= |old(~a16~0)| ~a16~0)) [2020-07-20 11:33:43,293 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:33:43,293 INFO L268 CegarLoopResult]: For program point L333(lines 333 390) no Hoare annotation was computed. [2020-07-20 11:33:43,293 INFO L268 CegarLoopResult]: For program point L102(lines 102 390) no Hoare annotation was computed. [2020-07-20 11:33:43,294 INFO L268 CegarLoopResult]: For program point L565-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,294 INFO L268 CegarLoopResult]: For program point L532-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,294 INFO L268 CegarLoopResult]: For program point L499-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,294 INFO L268 CegarLoopResult]: For program point L466-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,294 INFO L268 CegarLoopResult]: For program point L433-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,295 INFO L268 CegarLoopResult]: For program point L400-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,295 INFO L268 CegarLoopResult]: For program point L268(lines 268 390) no Hoare annotation was computed. [2020-07-20 11:33:43,295 INFO L268 CegarLoopResult]: For program point L136(lines 136 390) no Hoare annotation was computed. [2020-07-20 11:33:43,295 INFO L268 CegarLoopResult]: For program point L566(line 566) no Hoare annotation was computed. [2020-07-20 11:33:43,295 INFO L268 CegarLoopResult]: For program point L533(line 533) no Hoare annotation was computed. [2020-07-20 11:33:43,295 INFO L268 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2020-07-20 11:33:43,295 INFO L268 CegarLoopResult]: For program point L467(line 467) no Hoare annotation was computed. [2020-07-20 11:33:43,295 INFO L268 CegarLoopResult]: For program point L434(line 434) no Hoare annotation was computed. [2020-07-20 11:33:43,295 INFO L268 CegarLoopResult]: For program point L401(line 401) no Hoare annotation was computed. [2020-07-20 11:33:43,296 INFO L268 CegarLoopResult]: For program point L203(lines 203 390) no Hoare annotation was computed. [2020-07-20 11:33:43,296 INFO L268 CegarLoopResult]: For program point L72(lines 72 390) no Hoare annotation was computed. [2020-07-20 11:33:43,296 INFO L268 CegarLoopResult]: For program point L568-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,296 INFO L268 CegarLoopResult]: For program point L535-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,296 INFO L268 CegarLoopResult]: For program point L502-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,296 INFO L268 CegarLoopResult]: For program point L469-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,296 INFO L268 CegarLoopResult]: For program point L436-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,296 INFO L268 CegarLoopResult]: For program point L403-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,297 INFO L268 CegarLoopResult]: For program point L337(lines 337 390) no Hoare annotation was computed. [2020-07-20 11:33:43,297 INFO L268 CegarLoopResult]: For program point L238(lines 238 390) no Hoare annotation was computed. [2020-07-20 11:33:43,297 INFO L268 CegarLoopResult]: For program point L569(line 569) no Hoare annotation was computed. [2020-07-20 11:33:43,297 INFO L268 CegarLoopResult]: For program point L536(line 536) no Hoare annotation was computed. [2020-07-20 11:33:43,297 INFO L268 CegarLoopResult]: For program point L503(line 503) no Hoare annotation was computed. [2020-07-20 11:33:43,297 INFO L268 CegarLoopResult]: For program point L470(line 470) no Hoare annotation was computed. [2020-07-20 11:33:43,297 INFO L268 CegarLoopResult]: For program point L437(line 437) no Hoare annotation was computed. [2020-07-20 11:33:43,298 INFO L268 CegarLoopResult]: For program point L404(line 404) no Hoare annotation was computed. [2020-07-20 11:33:43,298 INFO L268 CegarLoopResult]: For program point L173(lines 173 390) no Hoare annotation was computed. [2020-07-20 11:33:43,298 INFO L268 CegarLoopResult]: For program point L140(lines 140 390) no Hoare annotation was computed. [2020-07-20 11:33:43,298 INFO L268 CegarLoopResult]: For program point L372(lines 372 390) no Hoare annotation was computed. [2020-07-20 11:33:43,298 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 452) no Hoare annotation was computed. [2020-07-20 11:33:43,298 INFO L268 CegarLoopResult]: For program point L306(lines 306 390) no Hoare annotation was computed. [2020-07-20 11:33:43,298 INFO L268 CegarLoopResult]: For program point L273(lines 273 390) no Hoare annotation was computed. [2020-07-20 11:33:43,298 INFO L268 CegarLoopResult]: For program point L108(lines 108 390) no Hoare annotation was computed. [2020-07-20 11:33:43,298 INFO L268 CegarLoopResult]: For program point L571-1(lines 571 573) no Hoare annotation was computed. [2020-07-20 11:33:43,299 INFO L268 CegarLoopResult]: For program point L538-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,299 INFO L268 CegarLoopResult]: For program point L505-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,299 INFO L268 CegarLoopResult]: For program point L472-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,299 INFO L268 CegarLoopResult]: For program point L439-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,299 INFO L268 CegarLoopResult]: For program point L406-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,299 INFO L268 CegarLoopResult]: For program point L208(lines 208 390) no Hoare annotation was computed. [2020-07-20 11:33:43,299 INFO L268 CegarLoopResult]: For program point L43(lines 43 390) no Hoare annotation was computed. [2020-07-20 11:33:43,299 INFO L268 CegarLoopResult]: For program point L572(line 572) no Hoare annotation was computed. [2020-07-20 11:33:43,299 INFO L268 CegarLoopResult]: For program point L539(line 539) no Hoare annotation was computed. [2020-07-20 11:33:43,299 INFO L268 CegarLoopResult]: For program point L506(line 506) no Hoare annotation was computed. [2020-07-20 11:33:43,300 INFO L268 CegarLoopResult]: For program point L473(line 473) no Hoare annotation was computed. [2020-07-20 11:33:43,300 INFO L268 CegarLoopResult]: For program point L440(line 440) no Hoare annotation was computed. [2020-07-20 11:33:43,300 INFO L268 CegarLoopResult]: For program point L407(line 407) no Hoare annotation was computed. [2020-07-20 11:33:43,300 INFO L268 CegarLoopResult]: For program point L144(lines 144 390) no Hoare annotation was computed. [2020-07-20 11:33:43,300 INFO L268 CegarLoopResult]: For program point L541-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,300 INFO L268 CegarLoopResult]: For program point L508-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,300 INFO L268 CegarLoopResult]: For program point L475-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,300 INFO L268 CegarLoopResult]: For program point L442-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,300 INFO L268 CegarLoopResult]: For program point L409-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,300 INFO L268 CegarLoopResult]: For program point L178(lines 178 390) no Hoare annotation was computed. [2020-07-20 11:33:43,300 INFO L268 CegarLoopResult]: For program point L542(line 542) no Hoare annotation was computed. [2020-07-20 11:33:43,301 INFO L268 CegarLoopResult]: For program point L509(line 509) no Hoare annotation was computed. [2020-07-20 11:33:43,301 INFO L268 CegarLoopResult]: For program point L476(line 476) no Hoare annotation was computed. [2020-07-20 11:33:43,301 INFO L268 CegarLoopResult]: For program point L443(line 443) no Hoare annotation was computed. [2020-07-20 11:33:43,301 INFO L268 CegarLoopResult]: For program point L410(line 410) no Hoare annotation was computed. [2020-07-20 11:33:43,301 INFO L268 CegarLoopResult]: For program point L377(lines 377 390) no Hoare annotation was computed. [2020-07-20 11:33:43,301 INFO L268 CegarLoopResult]: For program point L278(lines 278 390) no Hoare annotation was computed. [2020-07-20 11:33:43,301 INFO L268 CegarLoopResult]: For program point L245(lines 245 390) no Hoare annotation was computed. [2020-07-20 11:33:43,301 INFO L268 CegarLoopResult]: For program point L80(lines 80 390) no Hoare annotation was computed. [2020-07-20 11:33:43,302 INFO L268 CegarLoopResult]: For program point L345(lines 345 390) no Hoare annotation was computed. [2020-07-20 11:33:43,302 INFO L268 CegarLoopResult]: For program point L312(lines 312 390) no Hoare annotation was computed. [2020-07-20 11:33:43,302 INFO L268 CegarLoopResult]: For program point L114(lines 114 390) no Hoare annotation was computed. [2020-07-20 11:33:43,302 INFO L268 CegarLoopResult]: For program point L544-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,302 INFO L268 CegarLoopResult]: For program point L511-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,302 INFO L268 CegarLoopResult]: For program point L478-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,302 INFO L268 CegarLoopResult]: For program point L445-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,302 INFO L268 CegarLoopResult]: For program point L412-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,303 INFO L268 CegarLoopResult]: For program point L214(lines 214 390) no Hoare annotation was computed. [2020-07-20 11:33:43,303 INFO L268 CegarLoopResult]: For program point L148(lines 148 390) no Hoare annotation was computed. [2020-07-20 11:33:43,303 INFO L268 CegarLoopResult]: For program point L49(lines 49 390) no Hoare annotation was computed. [2020-07-20 11:33:43,303 INFO L268 CegarLoopResult]: For program point L545(line 545) no Hoare annotation was computed. [2020-07-20 11:33:43,303 INFO L268 CegarLoopResult]: For program point L512(line 512) no Hoare annotation was computed. [2020-07-20 11:33:43,303 INFO L268 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2020-07-20 11:33:43,303 INFO L268 CegarLoopResult]: For program point L446(line 446) no Hoare annotation was computed. [2020-07-20 11:33:43,303 INFO L268 CegarLoopResult]: For program point L413(line 413) no Hoare annotation was computed. [2020-07-20 11:33:43,304 INFO L268 CegarLoopResult]: For program point L84(lines 84 390) no Hoare annotation was computed. [2020-07-20 11:33:43,304 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,304 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,304 INFO L268 CegarLoopResult]: For program point L547-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,304 INFO L268 CegarLoopResult]: For program point L514-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,304 INFO L268 CegarLoopResult]: For program point L481-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,304 INFO L268 CegarLoopResult]: For program point L448-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,304 INFO L268 CegarLoopResult]: For program point L382(lines 382 390) no Hoare annotation was computed. [2020-07-20 11:33:43,304 INFO L268 CegarLoopResult]: For program point L415-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,305 INFO L268 CegarLoopResult]: For program point L316(lines 316 390) no Hoare annotation was computed. [2020-07-20 11:33:43,305 INFO L268 CegarLoopResult]: For program point L250(lines 250 390) no Hoare annotation was computed. [2020-07-20 11:33:43,305 INFO L268 CegarLoopResult]: For program point L548(line 548) no Hoare annotation was computed. [2020-07-20 11:33:43,305 INFO L268 CegarLoopResult]: For program point L515(line 515) no Hoare annotation was computed. [2020-07-20 11:33:43,305 INFO L268 CegarLoopResult]: For program point L482(line 482) no Hoare annotation was computed. [2020-07-20 11:33:43,305 INFO L268 CegarLoopResult]: For program point L449(line 449) no Hoare annotation was computed. [2020-07-20 11:33:43,305 INFO L268 CegarLoopResult]: For program point L416(line 416) no Hoare annotation was computed. [2020-07-20 11:33:43,305 INFO L268 CegarLoopResult]: For program point L218(lines 218 390) no Hoare annotation was computed. [2020-07-20 11:33:43,306 INFO L268 CegarLoopResult]: For program point L152(lines 152 390) no Hoare annotation was computed. [2020-07-20 11:33:43,306 INFO L268 CegarLoopResult]: For program point L119(lines 119 390) no Hoare annotation was computed. [2020-07-20 11:33:43,306 INFO L268 CegarLoopResult]: For program point L318(lines 318 390) no Hoare annotation was computed. [2020-07-20 11:33:43,306 INFO L268 CegarLoopResult]: For program point L186(lines 186 390) no Hoare annotation was computed. [2020-07-20 11:33:43,306 INFO L268 CegarLoopResult]: For program point L54(lines 54 390) no Hoare annotation was computed. [2020-07-20 11:33:43,306 INFO L268 CegarLoopResult]: For program point L550-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,306 INFO L268 CegarLoopResult]: For program point L517-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,306 INFO L268 CegarLoopResult]: For program point L484-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,306 INFO L268 CegarLoopResult]: For program point L451-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,307 INFO L268 CegarLoopResult]: For program point L418-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,307 INFO L268 CegarLoopResult]: For program point L286(lines 286 390) no Hoare annotation was computed. [2020-07-20 11:33:43,307 INFO L268 CegarLoopResult]: For program point L551(line 551) no Hoare annotation was computed. [2020-07-20 11:33:43,307 INFO L268 CegarLoopResult]: For program point L518(line 518) no Hoare annotation was computed. [2020-07-20 11:33:43,307 INFO L268 CegarLoopResult]: For program point L485(line 485) no Hoare annotation was computed. [2020-07-20 11:33:43,307 INFO L268 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2020-07-20 11:33:43,307 INFO L268 CegarLoopResult]: For program point L419(line 419) no Hoare annotation was computed. [2020-07-20 11:33:43,307 INFO L268 CegarLoopResult]: For program point L353(lines 353 390) no Hoare annotation was computed. [2020-07-20 11:33:43,307 INFO L268 CegarLoopResult]: For program point L189(lines 189 390) no Hoare annotation was computed. [2020-07-20 11:33:43,308 INFO L268 CegarLoopResult]: For program point L553-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,308 INFO L268 CegarLoopResult]: For program point L520-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,308 INFO L268 CegarLoopResult]: For program point L487-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,308 INFO L268 CegarLoopResult]: For program point L454-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,308 INFO L268 CegarLoopResult]: For program point L421-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,308 INFO L268 CegarLoopResult]: For program point L355(lines 355 390) no Hoare annotation was computed. [2020-07-20 11:33:43,308 INFO L268 CegarLoopResult]: For program point L256(lines 256 390) no Hoare annotation was computed. [2020-07-20 11:33:43,308 INFO L268 CegarLoopResult]: For program point L223(lines 223 390) no Hoare annotation was computed. [2020-07-20 11:33:43,309 INFO L268 CegarLoopResult]: For program point L124(lines 124 390) no Hoare annotation was computed. [2020-07-20 11:33:43,309 INFO L268 CegarLoopResult]: For program point L554(line 554) no Hoare annotation was computed. [2020-07-20 11:33:43,309 INFO L268 CegarLoopResult]: For program point L521(line 521) no Hoare annotation was computed. [2020-07-20 11:33:43,309 INFO L268 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2020-07-20 11:33:43,309 INFO L268 CegarLoopResult]: For program point L455(line 455) no Hoare annotation was computed. [2020-07-20 11:33:43,309 INFO L268 CegarLoopResult]: For program point L422(line 422) no Hoare annotation was computed. [2020-07-20 11:33:43,309 INFO L268 CegarLoopResult]: For program point L92(lines 92 390) no Hoare annotation was computed. [2020-07-20 11:33:43,310 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 30 575) the Hoare annotation is: (let ((.cse17 (not (<= |old(~a8~0)| 13))) (.cse6 (not (<= |old(~a16~0)| 5))) (.cse4 (<= ~a16~0 5)) (.cse0 (<= ~a8~0 |old(~a8~0)|)) (.cse11 (<= ~a16~0 |old(~a16~0)|)) (.cse16 (<= ~a8~0 13))) (let ((.cse8 (not (<= 5 |old(~a16~0)|))) (.cse7 (not (<= |old(~a20~0)| 0))) (.cse10 (not (<= |old(~a7~0)| 0))) (.cse1 (= 1 ~a7~0)) (.cse2 (<= ~a20~0 |old(~a20~0)|)) (.cse13 (or (and .cse0 .cse11 .cse4 (< ~a8~0 15)) (and .cse0 .cse11 .cse16))) (.cse3 (<= ~a17~0 0)) (.cse12 (<= |old(~a16~0)| ~a16~0)) (.cse5 (not (= 1 |old(~a7~0)|))) (.cse14 (and .cse17 (or .cse6 (not (< |old(~a8~0)| 15))))) (.cse9 (not (<= |old(~a17~0)| 0))) (.cse15 (not (<= |old(~a16~0)| 4)))) (and (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (<= 5 ~a16~0)) .cse5 .cse6 .cse7 .cse8 .cse9) (or .cse10 (and .cse0 .cse11 (= ~a7~0 |old(~a7~0)|) .cse2 .cse12)) (or (and .cse13 .cse1 .cse2 .cse12) .cse5 .cse14 .cse8) (or .cse5 .cse7 (and .cse0 .cse11 .cse1 .cse2 .cse12 .cse3) .cse15 .cse9) (or .cse3 .cse10 .cse9) (or (not (<= 15 |old(~a8~0)|)) .cse10 (<= 15 ~a8~0)) (or (and .cse1 .cse2 (or (and .cse13 .cse12 .cse3) (and .cse0 .cse11 .cse16 .cse12 (<= ~a16~0 4)))) .cse5 (and (or .cse14 .cse9) (or .cse17 .cse15)))))) [2020-07-20 11:33:43,310 INFO L268 CegarLoopResult]: For program point L324(lines 324 390) no Hoare annotation was computed. [2020-07-20 11:33:43,310 INFO L268 CegarLoopResult]: For program point L556-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,310 INFO L268 CegarLoopResult]: For program point L523-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,310 INFO L268 CegarLoopResult]: For program point L490-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,310 INFO L268 CegarLoopResult]: For program point L457-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,311 INFO L268 CegarLoopResult]: For program point L391(lines 391 393) no Hoare annotation was computed. [2020-07-20 11:33:43,311 INFO L268 CegarLoopResult]: For program point L424-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,311 INFO L268 CegarLoopResult]: For program point L391-2(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,311 INFO L268 CegarLoopResult]: For program point L292(lines 292 390) no Hoare annotation was computed. [2020-07-20 11:33:43,311 INFO L268 CegarLoopResult]: For program point L160(lines 160 390) no Hoare annotation was computed. [2020-07-20 11:33:43,311 INFO L268 CegarLoopResult]: For program point L557(line 557) no Hoare annotation was computed. [2020-07-20 11:33:43,311 INFO L268 CegarLoopResult]: For program point L524(line 524) no Hoare annotation was computed. [2020-07-20 11:33:43,312 INFO L268 CegarLoopResult]: For program point L491(line 491) no Hoare annotation was computed. [2020-07-20 11:33:43,312 INFO L268 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2020-07-20 11:33:43,312 INFO L268 CegarLoopResult]: For program point L425(line 425) no Hoare annotation was computed. [2020-07-20 11:33:43,312 INFO L268 CegarLoopResult]: For program point L392(line 392) no Hoare annotation was computed. [2020-07-20 11:33:43,312 INFO L268 CegarLoopResult]: For program point L194(lines 194 390) no Hoare annotation was computed. [2020-07-20 11:33:43,312 INFO L268 CegarLoopResult]: For program point L62(lines 62 390) no Hoare annotation was computed. [2020-07-20 11:33:43,312 INFO L268 CegarLoopResult]: For program point L261(lines 261 390) no Hoare annotation was computed. [2020-07-20 11:33:43,312 INFO L268 CegarLoopResult]: For program point L129(lines 129 390) no Hoare annotation was computed. [2020-07-20 11:33:43,313 INFO L268 CegarLoopResult]: For program point L559-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,313 INFO L268 CegarLoopResult]: For program point L526-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,313 INFO L268 CegarLoopResult]: For program point L493-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,313 INFO L268 CegarLoopResult]: For program point L460-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,313 INFO L268 CegarLoopResult]: For program point L427-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,313 INFO L268 CegarLoopResult]: For program point L361(lines 361 390) no Hoare annotation was computed. [2020-07-20 11:33:43,313 INFO L268 CegarLoopResult]: For program point L394-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,314 INFO L268 CegarLoopResult]: For program point L97(lines 97 390) no Hoare annotation was computed. [2020-07-20 11:33:43,314 INFO L268 CegarLoopResult]: For program point L31(lines 31 390) no Hoare annotation was computed. [2020-07-20 11:33:43,314 INFO L268 CegarLoopResult]: For program point L560(line 560) no Hoare annotation was computed. [2020-07-20 11:33:43,314 INFO L268 CegarLoopResult]: For program point L527(line 527) no Hoare annotation was computed. [2020-07-20 11:33:43,314 INFO L268 CegarLoopResult]: For program point L494(line 494) no Hoare annotation was computed. [2020-07-20 11:33:43,314 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-20 11:33:43,314 INFO L268 CegarLoopResult]: For program point L428(line 428) no Hoare annotation was computed. [2020-07-20 11:33:43,314 INFO L268 CegarLoopResult]: For program point L395(line 395) no Hoare annotation was computed. [2020-07-20 11:33:43,315 INFO L268 CegarLoopResult]: For program point L329(lines 329 390) no Hoare annotation was computed. [2020-07-20 11:33:43,315 INFO L268 CegarLoopResult]: For program point L197(lines 197 390) no Hoare annotation was computed. [2020-07-20 11:33:43,315 INFO L268 CegarLoopResult]: For program point L65(lines 65 390) no Hoare annotation was computed. [2020-07-20 11:33:43,315 INFO L268 CegarLoopResult]: For program point L363(lines 363 390) no Hoare annotation was computed. [2020-07-20 11:33:43,315 INFO L268 CegarLoopResult]: For program point L231(lines 231 390) no Hoare annotation was computed. [2020-07-20 11:33:43,315 INFO L268 CegarLoopResult]: For program point L165(lines 165 390) no Hoare annotation was computed. [2020-07-20 11:33:43,315 INFO L268 CegarLoopResult]: For program point L562-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,315 INFO L268 CegarLoopResult]: For program point L529-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,315 INFO L268 CegarLoopResult]: For program point L496-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,315 INFO L268 CegarLoopResult]: For program point L463-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,315 INFO L268 CegarLoopResult]: For program point L430-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,315 INFO L268 CegarLoopResult]: For program point L397-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:33:43,315 INFO L268 CegarLoopResult]: For program point L265(lines 265 390) no Hoare annotation was computed. [2020-07-20 11:33:43,316 INFO L268 CegarLoopResult]: For program point L563(line 563) no Hoare annotation was computed. [2020-07-20 11:33:43,316 INFO L268 CegarLoopResult]: For program point L530(line 530) no Hoare annotation was computed. [2020-07-20 11:33:43,316 INFO L268 CegarLoopResult]: For program point L497(line 497) no Hoare annotation was computed. [2020-07-20 11:33:43,316 INFO L268 CegarLoopResult]: For program point L464(line 464) no Hoare annotation was computed. [2020-07-20 11:33:43,316 INFO L268 CegarLoopResult]: For program point L431(line 431) no Hoare annotation was computed. [2020-07-20 11:33:43,316 INFO L268 CegarLoopResult]: For program point L398(line 398) no Hoare annotation was computed. [2020-07-20 11:33:43,316 INFO L268 CegarLoopResult]: For program point L365(lines 365 390) no Hoare annotation was computed. [2020-07-20 11:33:43,316 INFO L268 CegarLoopResult]: For program point L299(lines 299 390) no Hoare annotation was computed. [2020-07-20 11:33:43,316 INFO L268 CegarLoopResult]: For program point L35(lines 35 390) no Hoare annotation was computed. [2020-07-20 11:33:43,316 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:33:43,316 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a7~0 0) (<= ~a16~0 5) (<= 5 ~a16~0)) [2020-07-20 11:33:43,316 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 11:33:43,316 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 11:33:43,317 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 577 594) the Hoare annotation is: (or (and (<= ~a8~0 |old(~a8~0)|) (= ~a7~0 |old(~a7~0)|) (<= ~a20~0 |old(~a20~0)|) (<= ~a16~0 5) (<= 5 ~a16~0)) (not (<= |old(~a7~0)| 0)) (not (<= |old(~a16~0)| 5)) (not (<= 5 |old(~a16~0)|))) [2020-07-20 11:33:43,317 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 577 594) no Hoare annotation was computed. [2020-07-20 11:33:43,317 INFO L264 CegarLoopResult]: At program point L591(line 591) the Hoare annotation is: (let ((.cse2 (<= ~a8~0 13)) (.cse4 (<= ~a16~0 5))) (let ((.cse1 (or .cse2 (and .cse4 (< ~a8~0 15)))) (.cse0 (= 1 ~a7~0)) (.cse3 (<= ~a17~0 0))) (or (and .cse0 (<= 5 ~a16~0) .cse1) (<= ~a7~0 0) (not (<= |old(~a7~0)| 0)) (not (<= |old(~a16~0)| 5)) (and (or .cse2 (and .cse3 .cse1)) .cse0) (not (<= 5 |old(~a16~0)|)) (and .cse0 .cse3 .cse4 (<= ~a20~0 0))))) [2020-07-20 11:33:43,317 INFO L268 CegarLoopResult]: For program point L591-1(line 591) no Hoare annotation was computed. [2020-07-20 11:33:43,317 INFO L268 CegarLoopResult]: For program point L588(line 588) no Hoare annotation was computed. [2020-07-20 11:33:43,317 INFO L264 CegarLoopResult]: At program point L583-2(lines 583 593) the Hoare annotation is: (let ((.cse2 (<= ~a8~0 13)) (.cse4 (<= ~a16~0 5))) (let ((.cse1 (or .cse2 (and .cse4 (< ~a8~0 15)))) (.cse0 (= 1 ~a7~0)) (.cse3 (<= ~a17~0 0))) (or (and .cse0 (<= 5 ~a16~0) .cse1) (<= ~a7~0 0) (not (<= |old(~a7~0)| 0)) (not (<= |old(~a16~0)| 5)) (and (or .cse2 (and .cse3 .cse1)) .cse0) (not (<= 5 |old(~a16~0)|)) (and .cse0 .cse3 .cse4 (<= ~a20~0 0))))) [2020-07-20 11:33:43,317 INFO L268 CegarLoopResult]: For program point L583-3(lines 577 594) no Hoare annotation was computed. [2020-07-20 11:33:43,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:33:43 BoogieIcfgContainer [2020-07-20 11:33:43,338 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 11:33:43,340 INFO L168 Benchmark]: Toolchain (without parser) took 20670.30 ms. Allocated memory was 138.9 MB in the beginning and 519.6 MB in the end (delta: 380.6 MB). Free memory was 101.6 MB in the beginning and 428.1 MB in the end (delta: -326.5 MB). Peak memory consumption was 411.0 MB. Max. memory is 7.1 GB. [2020-07-20 11:33:43,341 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.8 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 11:33:43,342 INFO L168 Benchmark]: CACSL2BoogieTranslator took 752.95 ms. Allocated memory was 138.9 MB in the beginning and 207.6 MB in the end (delta: 68.7 MB). Free memory was 101.1 MB in the beginning and 173.5 MB in the end (delta: -72.3 MB). Peak memory consumption was 36.1 MB. Max. memory is 7.1 GB. [2020-07-20 11:33:43,342 INFO L168 Benchmark]: Boogie Preprocessor took 107.66 ms. Allocated memory is still 207.6 MB. Free memory was 173.5 MB in the beginning and 168.6 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2020-07-20 11:33:43,343 INFO L168 Benchmark]: RCFGBuilder took 1217.00 ms. Allocated memory was 207.6 MB in the beginning and 239.1 MB in the end (delta: 31.5 MB). Free memory was 168.6 MB in the beginning and 180.7 MB in the end (delta: -12.1 MB). Peak memory consumption was 81.9 MB. Max. memory is 7.1 GB. [2020-07-20 11:33:43,344 INFO L168 Benchmark]: TraceAbstraction took 18587.08 ms. Allocated memory was 239.1 MB in the beginning and 519.6 MB in the end (delta: 280.5 MB). Free memory was 180.7 MB in the beginning and 428.1 MB in the end (delta: -247.4 MB). Peak memory consumption was 390.0 MB. Max. memory is 7.1 GB. [2020-07-20 11:33:43,348 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.8 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 752.95 ms. Allocated memory was 138.9 MB in the beginning and 207.6 MB in the end (delta: 68.7 MB). Free memory was 101.1 MB in the beginning and 173.5 MB in the end (delta: -72.3 MB). Peak memory consumption was 36.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.66 ms. Allocated memory is still 207.6 MB. Free memory was 173.5 MB in the beginning and 168.6 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1217.00 ms. Allocated memory was 207.6 MB in the beginning and 239.1 MB in the end (delta: 31.5 MB). Free memory was 168.6 MB in the beginning and 180.7 MB in the end (delta: -12.1 MB). Peak memory consumption was 81.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 18587.08 ms. Allocated memory was 239.1 MB in the beginning and 519.6 MB in the end (delta: 280.5 MB). Free memory was 180.7 MB in the beginning and 428.1 MB in the end (delta: -247.4 MB). Peak memory consumption was 390.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 452]: 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: 583]: Loop Invariant Derived loop invariant: (((((((1 == a7 && 5 <= a16) && (a8 <= 13 || (a16 <= 5 && a8 < 15))) || a7 <= 0) || !(\old(a7) <= 0)) || !(\old(a16) <= 5)) || ((a8 <= 13 || (a17 <= 0 && (a8 <= 13 || (a16 <= 5 && a8 < 15)))) && 1 == a7)) || !(5 <= \old(a16))) || (((1 == a7 && a17 <= 0) && a16 <= 5) && a20 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.4s, OverallIterations: 8, TraceHistogramMax: 5, AutomataDifference: 9.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 455 SDtfs, 3075 SDslu, 362 SDs, 0 SdLazy, 7717 SolverSat, 1116 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2031 GetRequests, 1980 SyntacticMatches, 5 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7214occurred 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: 0.8s AutomataMinimizationTime, 8 MinimizatonAttempts, 2634 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 188 PreInvPairs, 302 NumberOfFragments, 464 HoareAnnotationTreeSize, 188 FomulaSimplifications, 94785 FormulaSimplificationTreeSizeReduction, 1.5s HoareSimplificationTime, 7 FomulaSimplificationsInter, 33155 FormulaSimplificationTreeSizeReductionInter, 2.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 1183 NumberOfCodeBlocks, 1183 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1995 ConstructedInterpolants, 0 QuantifiedInterpolants, 541727 SizeOfPredicates, 8 NumberOfNonLiveVariables, 3694 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 13 InterpolantComputations, 3 PerfectInterpolantSequences, 1214/1289 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...