/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 20:08:20,069 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-21 20:08:20,085 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 20:08:20,086 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 20:08:20,087 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 20:08:20,089 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 20:08:20,091 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 20:08:20,092 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 20:08:20,093 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 20:08:20,094 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 20:08:20,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 20:08:20,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 20:08:20,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 20:08:20,098 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 20:08:20,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 20:08:20,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 20:08:20,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 20:08:20,103 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 20:08:20,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 20:08:20,105 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 20:08:20,107 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 20:08:20,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 20:08:20,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 20:08:20,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 20:08:20,118 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 20:08:20,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 20:08:20,120 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 20:08:20,144 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 20:08:20,144 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 20:08:20,147 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 20:08:20,147 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 20:08:20,148 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 20:08:20,148 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 20:08:20,148 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 20:08:20,148 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 20:08:20,148 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 20:08:20,149 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 20:08:20,149 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 20:08:20,149 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 20:08:20,149 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 20:08:20,150 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 20:08:20,151 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 20:08:20,151 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 20:08:20,151 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 20:08:20,151 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 20:08:20,151 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 20:08:20,152 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 20:08:20,152 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 20:08:20,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 20:08:20,152 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 20:08:20,153 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 20:08:20,153 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 20:08:20,153 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 20:08:20,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:08:20,154 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 20:08:20,154 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 20:08:20,154 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 20:08:20,457 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 20:08:20,470 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 20:08:20,476 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 20:08:20,478 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 20:08:20,478 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 20:08:20,479 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label55.c [2020-07-21 20:08:20,561 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86ff81d1e/1014b1b2e54b466196aac4e976f0e9cc/FLAGf3a60e8e1 [2020-07-21 20:08:21,145 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 20:08:21,152 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label55.c [2020-07-21 20:08:21,167 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86ff81d1e/1014b1b2e54b466196aac4e976f0e9cc/FLAGf3a60e8e1 [2020-07-21 20:08:21,387 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86ff81d1e/1014b1b2e54b466196aac4e976f0e9cc [2020-07-21 20:08:21,395 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 20:08:21,398 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 20:08:21,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 20:08:21,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 20:08:21,403 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 20:08:21,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:08:21" (1/1) ... [2020-07-21 20:08:21,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@666d22b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:08:21, skipping insertion in model container [2020-07-21 20:08:21,409 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:08:21" (1/1) ... [2020-07-21 20:08:21,417 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 20:08:21,461 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 20:08:21,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 20:08:21,882 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 20:08:22,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 20:08:22,186 INFO L208 MainTranslator]: Completed translation [2020-07-21 20:08:22,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:08:22 WrapperNode [2020-07-21 20:08:22,187 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 20:08:22,188 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 20:08:22,188 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 20:08:22,188 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 20:08:22,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:08:22" (1/1) ... [2020-07-21 20:08:22,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:08:22" (1/1) ... [2020-07-21 20:08:22,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:08:22" (1/1) ... [2020-07-21 20:08:22,239 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:08:22" (1/1) ... [2020-07-21 20:08:22,289 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:08:22" (1/1) ... [2020-07-21 20:08:22,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:08:22" (1/1) ... [2020-07-21 20:08:22,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:08:22" (1/1) ... [2020-07-21 20:08:22,326 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 20:08:22,327 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 20:08:22,327 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 20:08:22,327 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 20:08:22,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:08:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 20:08:22,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 20:08:22,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 20:08:22,384 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 20:08:22,384 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 20:08:22,384 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 20:08:22,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 20:08:22,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 20:08:22,384 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 20:08:22,385 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 20:08:22,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 20:08:22,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 20:08:23,591 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 20:08:23,592 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 20:08:23,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:08:23 BoogieIcfgContainer [2020-07-21 20:08:23,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 20:08:23,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 20:08:23,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 20:08:23,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 20:08:23,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:08:21" (1/3) ... [2020-07-21 20:08:23,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@164d7a00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:08:23, skipping insertion in model container [2020-07-21 20:08:23,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:08:22" (2/3) ... [2020-07-21 20:08:23,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@164d7a00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:08:23, skipping insertion in model container [2020-07-21 20:08:23,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:08:23" (3/3) ... [2020-07-21 20:08:23,619 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label55.c [2020-07-21 20:08:23,632 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 20:08:23,647 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 20:08:23,662 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 20:08:23,703 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 20:08:23,704 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 20:08:23,704 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 20:08:23,705 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 20:08:23,705 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 20:08:23,705 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 20:08:23,705 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 20:08:23,705 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 20:08:23,734 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-07-21 20:08:23,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-07-21 20:08:23,754 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:08:23,756 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:08:23,756 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:08:23,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:08:23,763 INFO L82 PathProgramCache]: Analyzing trace with hash -462333177, now seen corresponding path program 1 times [2020-07-21 20:08:23,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:08:23,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901928741] [2020-07-21 20:08:23,774 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:08:23,995 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:08:23,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:08:24,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 20:08:24,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:08:24,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:08:24,106 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:08:24,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [901928741] [2020-07-21 20:08:24,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:08:24,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 20:08:24,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607607434] [2020-07-21 20:08:24,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 20:08:24,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:08:24,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 20:08:24,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 20:08:24,133 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 3 states. [2020-07-21 20:08:25,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:08:25,141 INFO L93 Difference]: Finished difference Result 547 states and 938 transitions. [2020-07-21 20:08:25,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 20:08:25,143 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 117 [2020-07-21 20:08:25,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:08:25,159 INFO L225 Difference]: With dead ends: 547 [2020-07-21 20:08:25,160 INFO L226 Difference]: Without dead ends: 278 [2020-07-21 20:08:25,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 20:08:25,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-07-21 20:08:25,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2020-07-21 20:08:25,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-07-21 20:08:25,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 406 transitions. [2020-07-21 20:08:25,245 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 406 transitions. Word has length 117 [2020-07-21 20:08:25,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:08:25,247 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 406 transitions. [2020-07-21 20:08:25,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 20:08:25,248 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 406 transitions. [2020-07-21 20:08:25,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-07-21 20:08:25,259 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:08:25,260 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:08:25,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:08:25,475 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:08:25,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:08:25,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1604702730, now seen corresponding path program 1 times [2020-07-21 20:08:25,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:08:25,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068651298] [2020-07-21 20:08:25,478 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:08:25,616 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:08:25,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:08:25,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 20:08:25,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:08:25,699 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:08:25,700 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:08:25,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068651298] [2020-07-21 20:08:25,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:08:25,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 20:08:25,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53682738] [2020-07-21 20:08:25,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 20:08:25,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:08:25,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 20:08:25,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 20:08:25,704 INFO L87 Difference]: Start difference. First operand 278 states and 406 transitions. Second operand 3 states. [2020-07-21 20:08:26,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:08:26,269 INFO L93 Difference]: Finished difference Result 820 states and 1217 transitions. [2020-07-21 20:08:26,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 20:08:26,270 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 126 [2020-07-21 20:08:26,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:08:26,277 INFO L225 Difference]: With dead ends: 820 [2020-07-21 20:08:26,277 INFO L226 Difference]: Without dead ends: 548 [2020-07-21 20:08:26,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 20:08:26,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2020-07-21 20:08:26,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 413. [2020-07-21 20:08:26,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2020-07-21 20:08:26,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 587 transitions. [2020-07-21 20:08:26,307 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 587 transitions. Word has length 126 [2020-07-21 20:08:26,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:08:26,308 INFO L479 AbstractCegarLoop]: Abstraction has 413 states and 587 transitions. [2020-07-21 20:08:26,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 20:08:26,309 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 587 transitions. [2020-07-21 20:08:26,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-07-21 20:08:26,311 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:08:26,311 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:08:26,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:08:26,526 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:08:26,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:08:26,527 INFO L82 PathProgramCache]: Analyzing trace with hash -879876428, now seen corresponding path program 1 times [2020-07-21 20:08:26,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:08:26,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063228070] [2020-07-21 20:08:26,529 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:08:26,686 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:08:26,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:08:26,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 20:08:26,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:08:26,734 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:08:26,734 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:08:26,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1063228070] [2020-07-21 20:08:26,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:08:26,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 20:08:26,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19584570] [2020-07-21 20:08:26,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 20:08:26,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:08:26,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 20:08:26,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 20:08:26,737 INFO L87 Difference]: Start difference. First operand 413 states and 587 transitions. Second operand 3 states. [2020-07-21 20:08:27,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:08:27,282 INFO L93 Difference]: Finished difference Result 1225 states and 1771 transitions. [2020-07-21 20:08:27,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 20:08:27,282 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 145 [2020-07-21 20:08:27,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:08:27,289 INFO L225 Difference]: With dead ends: 1225 [2020-07-21 20:08:27,290 INFO L226 Difference]: Without dead ends: 818 [2020-07-21 20:08:27,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 20:08:27,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2020-07-21 20:08:27,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 818. [2020-07-21 20:08:27,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 818 states. [2020-07-21 20:08:27,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1132 transitions. [2020-07-21 20:08:27,334 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1132 transitions. Word has length 145 [2020-07-21 20:08:27,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:08:27,335 INFO L479 AbstractCegarLoop]: Abstraction has 818 states and 1132 transitions. [2020-07-21 20:08:27,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 20:08:27,335 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1132 transitions. [2020-07-21 20:08:27,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-07-21 20:08:27,339 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:08:27,340 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 20:08:27,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:08:27,554 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:08:27,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:08:27,554 INFO L82 PathProgramCache]: Analyzing trace with hash 952013651, now seen corresponding path program 1 times [2020-07-21 20:08:27,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:08:27,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285367798] [2020-07-21 20:08:27,556 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:08:27,714 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:08:27,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:08:27,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 20:08:27,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:08:27,834 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 86 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:08:27,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 20:08:27,997 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 86 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:08:27,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285367798] [2020-07-21 20:08:27,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 20:08:27,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 20:08:27,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999361125] [2020-07-21 20:08:28,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 20:08:28,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:08:28,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 20:08:28,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 20:08:28,001 INFO L87 Difference]: Start difference. First operand 818 states and 1132 transitions. Second operand 6 states. [2020-07-21 20:08:29,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:08:29,201 INFO L93 Difference]: Finished difference Result 2266 states and 3421 transitions. [2020-07-21 20:08:29,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 20:08:29,202 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 200 [2020-07-21 20:08:29,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:08:29,217 INFO L225 Difference]: With dead ends: 2266 [2020-07-21 20:08:29,218 INFO L226 Difference]: Without dead ends: 1454 [2020-07-21 20:08:29,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 396 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-21 20:08:29,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1454 states. [2020-07-21 20:08:29,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1454 to 1386. [2020-07-21 20:08:29,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1386 states. [2020-07-21 20:08:29,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 1906 transitions. [2020-07-21 20:08:29,294 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 1906 transitions. Word has length 200 [2020-07-21 20:08:29,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:08:29,295 INFO L479 AbstractCegarLoop]: Abstraction has 1386 states and 1906 transitions. [2020-07-21 20:08:29,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 20:08:29,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 1906 transitions. [2020-07-21 20:08:29,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-07-21 20:08:29,301 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:08:29,302 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:08:29,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:08:29,517 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:08:29,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:08:29,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1988856539, now seen corresponding path program 1 times [2020-07-21 20:08:29,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:08:29,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752909944] [2020-07-21 20:08:29,519 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:08:29,653 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:08:29,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:08:29,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 20:08:29,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:08:29,717 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-21 20:08:29,717 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:08:29,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752909944] [2020-07-21 20:08:29,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:08:29,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 20:08:29,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510131951] [2020-07-21 20:08:29,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 20:08:29,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:08:29,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 20:08:29,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 20:08:29,720 INFO L87 Difference]: Start difference. First operand 1386 states and 1906 transitions. Second operand 3 states. [2020-07-21 20:08:30,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:08:30,324 INFO L93 Difference]: Finished difference Result 3173 states and 4411 transitions. [2020-07-21 20:08:30,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 20:08:30,324 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2020-07-21 20:08:30,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:08:30,326 INFO L225 Difference]: With dead ends: 3173 [2020-07-21 20:08:30,326 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 20:08:30,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 20:08:30,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 20:08:30,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 20:08:30,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 20:08:30,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 20:08:30,333 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 204 [2020-07-21 20:08:30,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:08:30,333 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 20:08:30,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 20:08:30,334 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 20:08:30,334 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 20:08:30,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:08:30,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 20:08:30,863 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 30 [2020-07-21 20:08:30,922 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 20:08:30,923 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (<= ~a16~0 |old(~a16~0)|) [2020-07-21 20:08:30,923 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 20:08:30,923 INFO L268 CegarLoopResult]: For program point L333(lines 333 390) no Hoare annotation was computed. [2020-07-21 20:08:30,923 INFO L268 CegarLoopResult]: For program point L102(lines 102 390) no Hoare annotation was computed. [2020-07-21 20:08:30,923 INFO L268 CegarLoopResult]: For program point L565-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,923 INFO L268 CegarLoopResult]: For program point L532-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,923 INFO L268 CegarLoopResult]: For program point L499-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,924 INFO L268 CegarLoopResult]: For program point L466-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,924 INFO L268 CegarLoopResult]: For program point L433-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,924 INFO L268 CegarLoopResult]: For program point L400-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,924 INFO L268 CegarLoopResult]: For program point L268(lines 268 390) no Hoare annotation was computed. [2020-07-21 20:08:30,924 INFO L268 CegarLoopResult]: For program point L136(lines 136 390) no Hoare annotation was computed. [2020-07-21 20:08:30,924 INFO L268 CegarLoopResult]: For program point L566(line 566) no Hoare annotation was computed. [2020-07-21 20:08:30,925 INFO L268 CegarLoopResult]: For program point L533(line 533) no Hoare annotation was computed. [2020-07-21 20:08:30,925 INFO L268 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2020-07-21 20:08:30,925 INFO L268 CegarLoopResult]: For program point L467(line 467) no Hoare annotation was computed. [2020-07-21 20:08:30,925 INFO L268 CegarLoopResult]: For program point L434(line 434) no Hoare annotation was computed. [2020-07-21 20:08:30,925 INFO L268 CegarLoopResult]: For program point L401(line 401) no Hoare annotation was computed. [2020-07-21 20:08:30,925 INFO L268 CegarLoopResult]: For program point L203(lines 203 390) no Hoare annotation was computed. [2020-07-21 20:08:30,926 INFO L268 CegarLoopResult]: For program point L72(lines 72 390) no Hoare annotation was computed. [2020-07-21 20:08:30,933 INFO L268 CegarLoopResult]: For program point L568-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,933 INFO L268 CegarLoopResult]: For program point L535-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,933 INFO L268 CegarLoopResult]: For program point L502-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,933 INFO L268 CegarLoopResult]: For program point L469-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,933 INFO L268 CegarLoopResult]: For program point L436-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,933 INFO L268 CegarLoopResult]: For program point L403-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,934 INFO L268 CegarLoopResult]: For program point L337(lines 337 390) no Hoare annotation was computed. [2020-07-21 20:08:30,934 INFO L268 CegarLoopResult]: For program point L238(lines 238 390) no Hoare annotation was computed. [2020-07-21 20:08:30,934 INFO L268 CegarLoopResult]: For program point L569(line 569) no Hoare annotation was computed. [2020-07-21 20:08:30,934 INFO L268 CegarLoopResult]: For program point L536(line 536) no Hoare annotation was computed. [2020-07-21 20:08:30,934 INFO L268 CegarLoopResult]: For program point L503(line 503) no Hoare annotation was computed. [2020-07-21 20:08:30,936 INFO L268 CegarLoopResult]: For program point L470(line 470) no Hoare annotation was computed. [2020-07-21 20:08:30,936 INFO L268 CegarLoopResult]: For program point L437(line 437) no Hoare annotation was computed. [2020-07-21 20:08:30,937 INFO L268 CegarLoopResult]: For program point L404(line 404) no Hoare annotation was computed. [2020-07-21 20:08:30,937 INFO L268 CegarLoopResult]: For program point L173(lines 173 390) no Hoare annotation was computed. [2020-07-21 20:08:30,937 INFO L268 CegarLoopResult]: For program point L140(lines 140 390) no Hoare annotation was computed. [2020-07-21 20:08:30,937 INFO L268 CegarLoopResult]: For program point L372(lines 372 390) no Hoare annotation was computed. [2020-07-21 20:08:30,937 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 509) no Hoare annotation was computed. [2020-07-21 20:08:30,937 INFO L268 CegarLoopResult]: For program point L306(lines 306 390) no Hoare annotation was computed. [2020-07-21 20:08:30,937 INFO L268 CegarLoopResult]: For program point L273(lines 273 390) no Hoare annotation was computed. [2020-07-21 20:08:30,938 INFO L268 CegarLoopResult]: For program point L108(lines 108 390) no Hoare annotation was computed. [2020-07-21 20:08:30,938 INFO L268 CegarLoopResult]: For program point L571-1(lines 571 573) no Hoare annotation was computed. [2020-07-21 20:08:30,938 INFO L268 CegarLoopResult]: For program point L538-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,938 INFO L268 CegarLoopResult]: For program point L505-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,938 INFO L268 CegarLoopResult]: For program point L472-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,938 INFO L268 CegarLoopResult]: For program point L439-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,938 INFO L268 CegarLoopResult]: For program point L406-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,939 INFO L268 CegarLoopResult]: For program point L208(lines 208 390) no Hoare annotation was computed. [2020-07-21 20:08:30,939 INFO L268 CegarLoopResult]: For program point L43(lines 43 390) no Hoare annotation was computed. [2020-07-21 20:08:30,939 INFO L268 CegarLoopResult]: For program point L572(line 572) no Hoare annotation was computed. [2020-07-21 20:08:30,939 INFO L268 CegarLoopResult]: For program point L539(line 539) no Hoare annotation was computed. [2020-07-21 20:08:30,939 INFO L268 CegarLoopResult]: For program point L506(line 506) no Hoare annotation was computed. [2020-07-21 20:08:30,939 INFO L268 CegarLoopResult]: For program point L473(line 473) no Hoare annotation was computed. [2020-07-21 20:08:30,939 INFO L268 CegarLoopResult]: For program point L440(line 440) no Hoare annotation was computed. [2020-07-21 20:08:30,939 INFO L268 CegarLoopResult]: For program point L407(line 407) no Hoare annotation was computed. [2020-07-21 20:08:30,940 INFO L268 CegarLoopResult]: For program point L144(lines 144 390) no Hoare annotation was computed. [2020-07-21 20:08:30,940 INFO L268 CegarLoopResult]: For program point L541-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,940 INFO L268 CegarLoopResult]: For program point L508-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,940 INFO L268 CegarLoopResult]: For program point L475-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,940 INFO L268 CegarLoopResult]: For program point L442-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,940 INFO L268 CegarLoopResult]: For program point L409-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,940 INFO L268 CegarLoopResult]: For program point L178(lines 178 390) no Hoare annotation was computed. [2020-07-21 20:08:30,941 INFO L268 CegarLoopResult]: For program point L542(line 542) no Hoare annotation was computed. [2020-07-21 20:08:30,941 INFO L268 CegarLoopResult]: For program point L509(line 509) no Hoare annotation was computed. [2020-07-21 20:08:30,941 INFO L268 CegarLoopResult]: For program point L476(line 476) no Hoare annotation was computed. [2020-07-21 20:08:30,941 INFO L268 CegarLoopResult]: For program point L443(line 443) no Hoare annotation was computed. [2020-07-21 20:08:30,941 INFO L268 CegarLoopResult]: For program point L410(line 410) no Hoare annotation was computed. [2020-07-21 20:08:30,941 INFO L268 CegarLoopResult]: For program point L377(lines 377 390) no Hoare annotation was computed. [2020-07-21 20:08:30,941 INFO L268 CegarLoopResult]: For program point L278(lines 278 390) no Hoare annotation was computed. [2020-07-21 20:08:30,941 INFO L268 CegarLoopResult]: For program point L245(lines 245 390) no Hoare annotation was computed. [2020-07-21 20:08:30,942 INFO L268 CegarLoopResult]: For program point L80(lines 80 390) no Hoare annotation was computed. [2020-07-21 20:08:30,942 INFO L268 CegarLoopResult]: For program point L345(lines 345 390) no Hoare annotation was computed. [2020-07-21 20:08:30,942 INFO L268 CegarLoopResult]: For program point L312(lines 312 390) no Hoare annotation was computed. [2020-07-21 20:08:30,942 INFO L268 CegarLoopResult]: For program point L114(lines 114 390) no Hoare annotation was computed. [2020-07-21 20:08:30,942 INFO L268 CegarLoopResult]: For program point L544-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,945 INFO L268 CegarLoopResult]: For program point L511-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,945 INFO L268 CegarLoopResult]: For program point L478-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,945 INFO L268 CegarLoopResult]: For program point L445-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,945 INFO L268 CegarLoopResult]: For program point L412-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,945 INFO L268 CegarLoopResult]: For program point L214(lines 214 390) no Hoare annotation was computed. [2020-07-21 20:08:30,946 INFO L268 CegarLoopResult]: For program point L148(lines 148 390) no Hoare annotation was computed. [2020-07-21 20:08:30,946 INFO L268 CegarLoopResult]: For program point L49(lines 49 390) no Hoare annotation was computed. [2020-07-21 20:08:30,946 INFO L268 CegarLoopResult]: For program point L545(line 545) no Hoare annotation was computed. [2020-07-21 20:08:30,946 INFO L268 CegarLoopResult]: For program point L512(line 512) no Hoare annotation was computed. [2020-07-21 20:08:30,946 INFO L268 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2020-07-21 20:08:30,946 INFO L268 CegarLoopResult]: For program point L446(line 446) no Hoare annotation was computed. [2020-07-21 20:08:30,946 INFO L268 CegarLoopResult]: For program point L413(line 413) no Hoare annotation was computed. [2020-07-21 20:08:30,946 INFO L268 CegarLoopResult]: For program point L84(lines 84 390) no Hoare annotation was computed. [2020-07-21 20:08:30,947 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,947 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,947 INFO L268 CegarLoopResult]: For program point L547-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,947 INFO L268 CegarLoopResult]: For program point L514-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,947 INFO L268 CegarLoopResult]: For program point L481-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,947 INFO L268 CegarLoopResult]: For program point L448-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,947 INFO L268 CegarLoopResult]: For program point L382(lines 382 390) no Hoare annotation was computed. [2020-07-21 20:08:30,947 INFO L268 CegarLoopResult]: For program point L415-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,948 INFO L268 CegarLoopResult]: For program point L316(lines 316 390) no Hoare annotation was computed. [2020-07-21 20:08:30,948 INFO L268 CegarLoopResult]: For program point L250(lines 250 390) no Hoare annotation was computed. [2020-07-21 20:08:30,948 INFO L268 CegarLoopResult]: For program point L548(line 548) no Hoare annotation was computed. [2020-07-21 20:08:30,948 INFO L268 CegarLoopResult]: For program point L515(line 515) no Hoare annotation was computed. [2020-07-21 20:08:30,948 INFO L268 CegarLoopResult]: For program point L482(line 482) no Hoare annotation was computed. [2020-07-21 20:08:30,948 INFO L268 CegarLoopResult]: For program point L449(line 449) no Hoare annotation was computed. [2020-07-21 20:08:30,948 INFO L268 CegarLoopResult]: For program point L416(line 416) no Hoare annotation was computed. [2020-07-21 20:08:30,949 INFO L268 CegarLoopResult]: For program point L218(lines 218 390) no Hoare annotation was computed. [2020-07-21 20:08:30,949 INFO L268 CegarLoopResult]: For program point L152(lines 152 390) no Hoare annotation was computed. [2020-07-21 20:08:30,949 INFO L268 CegarLoopResult]: For program point L119(lines 119 390) no Hoare annotation was computed. [2020-07-21 20:08:30,949 INFO L268 CegarLoopResult]: For program point L318(lines 318 390) no Hoare annotation was computed. [2020-07-21 20:08:30,949 INFO L268 CegarLoopResult]: For program point L186(lines 186 390) no Hoare annotation was computed. [2020-07-21 20:08:30,949 INFO L268 CegarLoopResult]: For program point L54(lines 54 390) no Hoare annotation was computed. [2020-07-21 20:08:30,949 INFO L268 CegarLoopResult]: For program point L550-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,949 INFO L268 CegarLoopResult]: For program point L517-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,950 INFO L268 CegarLoopResult]: For program point L484-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,950 INFO L268 CegarLoopResult]: For program point L451-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,950 INFO L268 CegarLoopResult]: For program point L418-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,951 INFO L268 CegarLoopResult]: For program point L286(lines 286 390) no Hoare annotation was computed. [2020-07-21 20:08:30,951 INFO L268 CegarLoopResult]: For program point L551(line 551) no Hoare annotation was computed. [2020-07-21 20:08:30,951 INFO L268 CegarLoopResult]: For program point L518(line 518) no Hoare annotation was computed. [2020-07-21 20:08:30,951 INFO L268 CegarLoopResult]: For program point L485(line 485) no Hoare annotation was computed. [2020-07-21 20:08:30,951 INFO L268 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2020-07-21 20:08:30,951 INFO L268 CegarLoopResult]: For program point L419(line 419) no Hoare annotation was computed. [2020-07-21 20:08:30,952 INFO L268 CegarLoopResult]: For program point L353(lines 353 390) no Hoare annotation was computed. [2020-07-21 20:08:30,952 INFO L268 CegarLoopResult]: For program point L189(lines 189 390) no Hoare annotation was computed. [2020-07-21 20:08:30,952 INFO L268 CegarLoopResult]: For program point L553-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,953 INFO L268 CegarLoopResult]: For program point L520-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,953 INFO L268 CegarLoopResult]: For program point L487-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,954 INFO L268 CegarLoopResult]: For program point L454-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,954 INFO L268 CegarLoopResult]: For program point L421-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,954 INFO L268 CegarLoopResult]: For program point L355(lines 355 390) no Hoare annotation was computed. [2020-07-21 20:08:30,954 INFO L268 CegarLoopResult]: For program point L256(lines 256 390) no Hoare annotation was computed. [2020-07-21 20:08:30,954 INFO L268 CegarLoopResult]: For program point L223(lines 223 390) no Hoare annotation was computed. [2020-07-21 20:08:30,954 INFO L268 CegarLoopResult]: For program point L124(lines 124 390) no Hoare annotation was computed. [2020-07-21 20:08:30,954 INFO L268 CegarLoopResult]: For program point L554(line 554) no Hoare annotation was computed. [2020-07-21 20:08:30,955 INFO L268 CegarLoopResult]: For program point L521(line 521) no Hoare annotation was computed. [2020-07-21 20:08:30,955 INFO L268 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2020-07-21 20:08:30,955 INFO L268 CegarLoopResult]: For program point L455(line 455) no Hoare annotation was computed. [2020-07-21 20:08:30,955 INFO L268 CegarLoopResult]: For program point L422(line 422) no Hoare annotation was computed. [2020-07-21 20:08:30,955 INFO L268 CegarLoopResult]: For program point L92(lines 92 390) no Hoare annotation was computed. [2020-07-21 20:08:30,955 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 30 575) the Hoare annotation is: (let ((.cse0 (<= ~a16~0 |old(~a16~0)|))) (and (or (not (<= 15 |old(~a8~0)|)) (and .cse0 (<= 15 ~a8~0))) (or (not (<= |old(~a8~0)| 13)) (and .cse0 (<= ~a8~0 13))) (or .cse0 (not (<= |old(~a16~0)| 4))) (or (and .cse0 (<= ~a17~0 0)) (not (<= |old(~a17~0)| 0))))) [2020-07-21 20:08:30,956 INFO L268 CegarLoopResult]: For program point L324(lines 324 390) no Hoare annotation was computed. [2020-07-21 20:08:30,956 INFO L268 CegarLoopResult]: For program point L556-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,956 INFO L268 CegarLoopResult]: For program point L523-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,956 INFO L268 CegarLoopResult]: For program point L490-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,956 INFO L268 CegarLoopResult]: For program point L457-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,956 INFO L268 CegarLoopResult]: For program point L391(lines 391 393) no Hoare annotation was computed. [2020-07-21 20:08:30,957 INFO L268 CegarLoopResult]: For program point L424-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,957 INFO L268 CegarLoopResult]: For program point L391-2(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,957 INFO L268 CegarLoopResult]: For program point L292(lines 292 390) no Hoare annotation was computed. [2020-07-21 20:08:30,957 INFO L268 CegarLoopResult]: For program point L160(lines 160 390) no Hoare annotation was computed. [2020-07-21 20:08:30,960 INFO L268 CegarLoopResult]: For program point L557(line 557) no Hoare annotation was computed. [2020-07-21 20:08:30,960 INFO L268 CegarLoopResult]: For program point L524(line 524) no Hoare annotation was computed. [2020-07-21 20:08:30,960 INFO L268 CegarLoopResult]: For program point L491(line 491) no Hoare annotation was computed. [2020-07-21 20:08:30,960 INFO L268 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2020-07-21 20:08:30,960 INFO L268 CegarLoopResult]: For program point L425(line 425) no Hoare annotation was computed. [2020-07-21 20:08:30,961 INFO L268 CegarLoopResult]: For program point L392(line 392) no Hoare annotation was computed. [2020-07-21 20:08:30,961 INFO L268 CegarLoopResult]: For program point L194(lines 194 390) no Hoare annotation was computed. [2020-07-21 20:08:30,961 INFO L268 CegarLoopResult]: For program point L62(lines 62 390) no Hoare annotation was computed. [2020-07-21 20:08:30,961 INFO L268 CegarLoopResult]: For program point L261(lines 261 390) no Hoare annotation was computed. [2020-07-21 20:08:30,961 INFO L268 CegarLoopResult]: For program point L129(lines 129 390) no Hoare annotation was computed. [2020-07-21 20:08:30,962 INFO L268 CegarLoopResult]: For program point L559-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,962 INFO L268 CegarLoopResult]: For program point L526-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,962 INFO L268 CegarLoopResult]: For program point L493-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,962 INFO L268 CegarLoopResult]: For program point L460-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,962 INFO L268 CegarLoopResult]: For program point L427-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,962 INFO L268 CegarLoopResult]: For program point L361(lines 361 390) no Hoare annotation was computed. [2020-07-21 20:08:30,963 INFO L268 CegarLoopResult]: For program point L394-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,963 INFO L268 CegarLoopResult]: For program point L97(lines 97 390) no Hoare annotation was computed. [2020-07-21 20:08:30,963 INFO L268 CegarLoopResult]: For program point L31(lines 31 390) no Hoare annotation was computed. [2020-07-21 20:08:30,963 INFO L268 CegarLoopResult]: For program point L560(line 560) no Hoare annotation was computed. [2020-07-21 20:08:30,963 INFO L268 CegarLoopResult]: For program point L527(line 527) no Hoare annotation was computed. [2020-07-21 20:08:30,963 INFO L268 CegarLoopResult]: For program point L494(line 494) no Hoare annotation was computed. [2020-07-21 20:08:30,963 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-21 20:08:30,963 INFO L268 CegarLoopResult]: For program point L428(line 428) no Hoare annotation was computed. [2020-07-21 20:08:30,964 INFO L268 CegarLoopResult]: For program point L395(line 395) no Hoare annotation was computed. [2020-07-21 20:08:30,964 INFO L268 CegarLoopResult]: For program point L329(lines 329 390) no Hoare annotation was computed. [2020-07-21 20:08:30,964 INFO L268 CegarLoopResult]: For program point L197(lines 197 390) no Hoare annotation was computed. [2020-07-21 20:08:30,964 INFO L268 CegarLoopResult]: For program point L65(lines 65 390) no Hoare annotation was computed. [2020-07-21 20:08:30,964 INFO L268 CegarLoopResult]: For program point L363(lines 363 390) no Hoare annotation was computed. [2020-07-21 20:08:30,964 INFO L268 CegarLoopResult]: For program point L231(lines 231 390) no Hoare annotation was computed. [2020-07-21 20:08:30,964 INFO L268 CegarLoopResult]: For program point L165(lines 165 390) no Hoare annotation was computed. [2020-07-21 20:08:30,964 INFO L268 CegarLoopResult]: For program point L562-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,965 INFO L268 CegarLoopResult]: For program point L529-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,965 INFO L268 CegarLoopResult]: For program point L496-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,965 INFO L268 CegarLoopResult]: For program point L463-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,965 INFO L268 CegarLoopResult]: For program point L430-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,965 INFO L268 CegarLoopResult]: For program point L397-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:08:30,965 INFO L268 CegarLoopResult]: For program point L265(lines 265 390) no Hoare annotation was computed. [2020-07-21 20:08:30,965 INFO L268 CegarLoopResult]: For program point L563(line 563) no Hoare annotation was computed. [2020-07-21 20:08:30,966 INFO L268 CegarLoopResult]: For program point L530(line 530) no Hoare annotation was computed. [2020-07-21 20:08:30,966 INFO L268 CegarLoopResult]: For program point L497(line 497) no Hoare annotation was computed. [2020-07-21 20:08:30,966 INFO L268 CegarLoopResult]: For program point L464(line 464) no Hoare annotation was computed. [2020-07-21 20:08:30,966 INFO L268 CegarLoopResult]: For program point L431(line 431) no Hoare annotation was computed. [2020-07-21 20:08:30,966 INFO L268 CegarLoopResult]: For program point L398(line 398) no Hoare annotation was computed. [2020-07-21 20:08:30,966 INFO L268 CegarLoopResult]: For program point L365(lines 365 390) no Hoare annotation was computed. [2020-07-21 20:08:30,966 INFO L268 CegarLoopResult]: For program point L299(lines 299 390) no Hoare annotation was computed. [2020-07-21 20:08:30,966 INFO L268 CegarLoopResult]: For program point L35(lines 35 390) no Hoare annotation was computed. [2020-07-21 20:08:30,967 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 20:08:30,967 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a16~0 5) (<= 15 ~a8~0)) [2020-07-21 20:08:30,967 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 20:08:30,967 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 20:08:30,967 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 577 594) the Hoare annotation is: (or (not (<= 15 |old(~a8~0)|)) (not (<= |old(~a16~0)| 5)) (and (<= ~a16~0 |old(~a16~0)|) (<= 15 ~a8~0))) [2020-07-21 20:08:30,967 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 577 594) no Hoare annotation was computed. [2020-07-21 20:08:30,968 INFO L264 CegarLoopResult]: At program point L591(line 591) the Hoare annotation is: (or (<= ~a8~0 13) (not (<= 15 |old(~a8~0)|)) (<= ~a17~0 0) (<= 15 ~a8~0) (not (<= |old(~a16~0)| 5)) (<= ~a16~0 4)) [2020-07-21 20:08:30,968 INFO L268 CegarLoopResult]: For program point L591-1(line 591) no Hoare annotation was computed. [2020-07-21 20:08:30,968 INFO L268 CegarLoopResult]: For program point L588(line 588) no Hoare annotation was computed. [2020-07-21 20:08:30,968 INFO L264 CegarLoopResult]: At program point L583-2(lines 583 593) the Hoare annotation is: (or (<= ~a8~0 13) (not (<= 15 |old(~a8~0)|)) (<= ~a17~0 0) (<= 15 ~a8~0) (not (<= |old(~a16~0)| 5)) (<= ~a16~0 4)) [2020-07-21 20:08:30,968 INFO L268 CegarLoopResult]: For program point L583-3(lines 577 594) no Hoare annotation was computed. [2020-07-21 20:08:30,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 08:08:30 BoogieIcfgContainer [2020-07-21 20:08:30,996 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 20:08:31,000 INFO L168 Benchmark]: Toolchain (without parser) took 9602.25 ms. Allocated memory was 137.4 MB in the beginning and 336.6 MB in the end (delta: 199.2 MB). Free memory was 100.5 MB in the beginning and 167.5 MB in the end (delta: -67.0 MB). Peak memory consumption was 132.2 MB. Max. memory is 7.1 GB. [2020-07-21 20:08:31,005 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 137.4 MB. Free memory is still 120.1 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 20:08:31,006 INFO L168 Benchmark]: CACSL2BoogieTranslator took 788.70 ms. Allocated memory was 137.4 MB in the beginning and 204.5 MB in the end (delta: 67.1 MB). Free memory was 100.5 MB in the beginning and 171.4 MB in the end (delta: -70.9 MB). Peak memory consumption was 37.7 MB. Max. memory is 7.1 GB. [2020-07-21 20:08:31,008 INFO L168 Benchmark]: Boogie Preprocessor took 138.58 ms. Allocated memory is still 204.5 MB. Free memory was 171.4 MB in the beginning and 166.2 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 7.1 GB. [2020-07-21 20:08:31,009 INFO L168 Benchmark]: RCFGBuilder took 1277.71 ms. Allocated memory was 204.5 MB in the beginning and 235.4 MB in the end (delta: 30.9 MB). Free memory was 166.2 MB in the beginning and 180.2 MB in the end (delta: -14.0 MB). Peak memory consumption was 85.3 MB. Max. memory is 7.1 GB. [2020-07-21 20:08:31,010 INFO L168 Benchmark]: TraceAbstraction took 7389.10 ms. Allocated memory was 235.4 MB in the beginning and 336.6 MB in the end (delta: 101.2 MB). Free memory was 178.4 MB in the beginning and 167.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 112.1 MB. Max. memory is 7.1 GB. [2020-07-21 20:08:31,024 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 137.4 MB. Free memory is still 120.1 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 788.70 ms. Allocated memory was 137.4 MB in the beginning and 204.5 MB in the end (delta: 67.1 MB). Free memory was 100.5 MB in the beginning and 171.4 MB in the end (delta: -70.9 MB). Peak memory consumption was 37.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 138.58 ms. Allocated memory is still 204.5 MB. Free memory was 171.4 MB in the beginning and 166.2 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1277.71 ms. Allocated memory was 204.5 MB in the beginning and 235.4 MB in the end (delta: 30.9 MB). Free memory was 166.2 MB in the beginning and 180.2 MB in the end (delta: -14.0 MB). Peak memory consumption was 85.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7389.10 ms. Allocated memory was 235.4 MB in the beginning and 336.6 MB in the end (delta: 101.2 MB). Free memory was 178.4 MB in the beginning and 167.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 112.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 509]: 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: ((((a8 <= 13 || !(15 <= \old(a8))) || a17 <= 0) || 15 <= a8) || !(\old(a16) <= 5)) || a16 <= 4 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.8s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 531 SDtfs, 424 SDslu, 106 SDs, 0 SdLazy, 2306 SolverSat, 469 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 993 GetRequests, 980 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1386occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 203 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 41 PreInvPairs, 67 NumberOfFragments, 114 HoareAnnotationTreeSize, 41 FomulaSimplifications, 894 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 281 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 792 NumberOfCodeBlocks, 792 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 986 ConstructedInterpolants, 0 QuantifiedInterpolants, 414788 SizeOfPredicates, 9 NumberOfNonLiveVariables, 2016 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 299/303 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...