/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_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 20:06:25,837 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 20:06:25,840 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 20:06:25,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 20:06:25,856 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 20:06:25,857 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 20:06:25,859 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 20:06:25,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 20:06:25,862 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 20:06:25,863 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 20:06:25,864 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 20:06:25,865 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 20:06:25,866 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 20:06:25,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 20:06:25,868 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 20:06:25,869 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 20:06:25,870 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 20:06:25,870 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 20:06:25,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 20:06:25,874 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 20:06:25,875 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 20:06:25,876 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 20:06:25,878 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 20:06:25,878 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 20:06:25,881 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 20:06:25,889 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 20:06:25,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 20:06:25,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 20:06:25,891 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 20:06:25,906 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 20:06:25,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 20:06:25,907 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 20:06:25,907 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 20:06:25,908 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 20:06:25,908 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 20:06:25,908 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 20:06:25,908 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 20:06:25,909 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 20:06:25,909 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 20:06:25,909 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 20:06:25,909 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 20:06:25,909 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 20:06:25,909 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 20:06:25,910 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 20:06:25,910 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 20:06:25,910 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 20:06:25,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 20:06:25,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 20:06:25,912 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 20:06:25,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 20:06:25,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 20:06:25,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 20:06:25,913 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 20:06:25,913 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 20:06:25,913 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 20:06:25,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:06:25,914 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 20:06:25,914 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 20:06:25,914 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 20:06:26,226 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 20:06:26,239 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 20:06:26,243 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 20:06:26,244 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 20:06:26,245 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 20:06:26,245 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label13.c [2020-07-21 20:06:26,328 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4c5917e6/43366661218645e29dff0d10908f7af2/FLAGcf6812749 [2020-07-21 20:06:26,907 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 20:06:26,908 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label13.c [2020-07-21 20:06:26,919 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4c5917e6/43366661218645e29dff0d10908f7af2/FLAGcf6812749 [2020-07-21 20:06:27,180 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4c5917e6/43366661218645e29dff0d10908f7af2 [2020-07-21 20:06:27,190 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 20:06:27,194 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 20:06:27,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 20:06:27,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 20:06:27,199 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 20:06:27,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:06:27" (1/1) ... [2020-07-21 20:06:27,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65940f7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:06:27, skipping insertion in model container [2020-07-21 20:06:27,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:06:27" (1/1) ... [2020-07-21 20:06:27,211 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 20:06:27,255 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 20:06:27,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 20:06:27,704 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 20:06:27,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 20:06:27,959 INFO L208 MainTranslator]: Completed translation [2020-07-21 20:06:27,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:06:27 WrapperNode [2020-07-21 20:06:27,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 20:06:27,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 20:06:27,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 20:06:27,961 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 20:06:27,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:06:27" (1/1) ... [2020-07-21 20:06:27,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:06:27" (1/1) ... [2020-07-21 20:06:27,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:06:27" (1/1) ... [2020-07-21 20:06:27,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:06:27" (1/1) ... [2020-07-21 20:06:28,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:06:27" (1/1) ... [2020-07-21 20:06:28,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:06:27" (1/1) ... [2020-07-21 20:06:28,092 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:06:27" (1/1) ... [2020-07-21 20:06:28,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 20:06:28,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 20:06:28,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 20:06:28,104 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 20:06:28,105 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:06:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 20:06:28,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 20:06:28,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 20:06:28,186 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 20:06:28,186 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 20:06:28,186 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 20:06:28,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 20:06:28,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 20:06:28,187 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 20:06:28,187 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 20:06:28,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 20:06:28,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 20:06:29,328 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 20:06:29,328 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 20:06:29,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:06:29 BoogieIcfgContainer [2020-07-21 20:06:29,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 20:06:29,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 20:06:29,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 20:06:29,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 20:06:29,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:06:27" (1/3) ... [2020-07-21 20:06:29,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@187b4613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:06:29, skipping insertion in model container [2020-07-21 20:06:29,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:06:27" (2/3) ... [2020-07-21 20:06:29,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@187b4613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:06:29, skipping insertion in model container [2020-07-21 20:06:29,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:06:29" (3/3) ... [2020-07-21 20:06:29,343 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label13.c [2020-07-21 20:06:29,354 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 20:06:29,362 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 20:06:29,377 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 20:06:29,404 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 20:06:29,404 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 20:06:29,405 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 20:06:29,405 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 20:06:29,405 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 20:06:29,405 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 20:06:29,405 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 20:06:29,405 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 20:06:29,430 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-07-21 20:06:29,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-07-21 20:06:29,451 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:06:29,453 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:06:29,453 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:06:29,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:06:29,458 INFO L82 PathProgramCache]: Analyzing trace with hash -2118591881, now seen corresponding path program 1 times [2020-07-21 20:06:29,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:06:29,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2032323517] [2020-07-21 20:06:29,466 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 20:06:29,752 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:06:29,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:06:29,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 20:06:29,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:06:29,911 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 20:06:29,911 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:06:29,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2032323517] [2020-07-21 20:06:29,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:06:29,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 20:06:29,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518781089] [2020-07-21 20:06:29,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 20:06:29,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:06:29,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 20:06:29,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 20:06:29,938 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 3 states. [2020-07-21 20:06:30,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:06:30,908 INFO L93 Difference]: Finished difference Result 572 states and 963 transitions. [2020-07-21 20:06:30,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 20:06:30,911 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 129 [2020-07-21 20:06:30,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:06:30,928 INFO L225 Difference]: With dead ends: 572 [2020-07-21 20:06:30,928 INFO L226 Difference]: Without dead ends: 278 [2020-07-21 20:06:30,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 127 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 20:06:30,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-07-21 20:06:31,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2020-07-21 20:06:31,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-07-21 20:06:31,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 394 transitions. [2020-07-21 20:06:31,019 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 394 transitions. Word has length 129 [2020-07-21 20:06:31,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:06:31,022 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 394 transitions. [2020-07-21 20:06:31,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 20:06:31,023 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 394 transitions. [2020-07-21 20:06:31,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-07-21 20:06:31,033 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:06:31,034 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, 1, 1, 1, 1, 1, 1, 1, 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 20:06:31,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:06:31,250 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:06:31,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:06:31,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1831193664, now seen corresponding path program 1 times [2020-07-21 20:06:31,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:06:31,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684338097] [2020-07-21 20:06:31,253 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 20:06:31,371 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:06:31,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:06:31,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 20:06:31,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:06:31,453 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:06:31,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:06:31,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684338097] [2020-07-21 20:06:31,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:06:31,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 20:06:31,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095688246] [2020-07-21 20:06:31,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 20:06:31,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:06:31,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 20:06:31,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 20:06:31,458 INFO L87 Difference]: Start difference. First operand 278 states and 394 transitions. Second operand 3 states. [2020-07-21 20:06:32,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:06:32,022 INFO L93 Difference]: Finished difference Result 820 states and 1181 transitions. [2020-07-21 20:06:32,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 20:06:32,022 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 139 [2020-07-21 20:06:32,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:06:32,032 INFO L225 Difference]: With dead ends: 820 [2020-07-21 20:06:32,032 INFO L226 Difference]: Without dead ends: 548 [2020-07-21 20:06:32,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 137 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 20:06:32,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2020-07-21 20:06:32,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 548. [2020-07-21 20:06:32,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 548 states. [2020-07-21 20:06:32,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 734 transitions. [2020-07-21 20:06:32,100 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 734 transitions. Word has length 139 [2020-07-21 20:06:32,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:06:32,101 INFO L479 AbstractCegarLoop]: Abstraction has 548 states and 734 transitions. [2020-07-21 20:06:32,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 20:06:32,101 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 734 transitions. [2020-07-21 20:06:32,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-07-21 20:06:32,107 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:06:32,108 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 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 20:06:32,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:06:32,322 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:06:32,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:06:32,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1345330618, now seen corresponding path program 1 times [2020-07-21 20:06:32,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:06:32,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1199814143] [2020-07-21 20:06:32,325 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 20:06:32,429 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:06:32,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:06:32,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 20:06:32,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:06:32,513 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:06:32,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:06:32,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1199814143] [2020-07-21 20:06:32,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:06:32,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 20:06:32,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268153045] [2020-07-21 20:06:32,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 20:06:32,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:06:32,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 20:06:32,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 20:06:32,517 INFO L87 Difference]: Start difference. First operand 548 states and 734 transitions. Second operand 3 states. [2020-07-21 20:06:33,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:06:33,102 INFO L93 Difference]: Finished difference Result 1360 states and 1853 transitions. [2020-07-21 20:06:33,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 20:06:33,104 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 144 [2020-07-21 20:06:33,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:06:33,111 INFO L225 Difference]: With dead ends: 1360 [2020-07-21 20:06:33,111 INFO L226 Difference]: Without dead ends: 818 [2020-07-21 20:06:33,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 142 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 20:06:33,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2020-07-21 20:06:33,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 818. [2020-07-21 20:06:33,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 818 states. [2020-07-21 20:06:33,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1060 transitions. [2020-07-21 20:06:33,143 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1060 transitions. Word has length 144 [2020-07-21 20:06:33,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:06:33,144 INFO L479 AbstractCegarLoop]: Abstraction has 818 states and 1060 transitions. [2020-07-21 20:06:33,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 20:06:33,144 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1060 transitions. [2020-07-21 20:06:33,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-07-21 20:06:33,148 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:06:33,148 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 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 20:06:33,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:06:33,363 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:06:33,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:06:33,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1761792683, now seen corresponding path program 1 times [2020-07-21 20:06:33,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:06:33,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878282368] [2020-07-21 20:06:33,365 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 20:06:33,477 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:06:33,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:06:33,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 20:06:33,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:06:33,568 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:06:33,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 20:06:33,683 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:06:33,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878282368] [2020-07-21 20:06:33,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 20:06:33,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-07-21 20:06:33,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490829512] [2020-07-21 20:06:33,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 20:06:33,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:06:33,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 20:06:33,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-07-21 20:06:33,686 INFO L87 Difference]: Start difference. First operand 818 states and 1060 transitions. Second operand 8 states. [2020-07-21 20:06:35,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:06:35,987 INFO L93 Difference]: Finished difference Result 3084 states and 4287 transitions. [2020-07-21 20:06:35,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 20:06:35,988 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 155 [2020-07-21 20:06:35,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:06:36,008 INFO L225 Difference]: With dead ends: 3084 [2020-07-21 20:06:36,009 INFO L226 Difference]: Without dead ends: 2272 [2020-07-21 20:06:36,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-07-21 20:06:36,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2272 states. [2020-07-21 20:06:36,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2272 to 2065. [2020-07-21 20:06:36,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2065 states. [2020-07-21 20:06:36,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2065 states to 2065 states and 2573 transitions. [2020-07-21 20:06:36,130 INFO L78 Accepts]: Start accepts. Automaton has 2065 states and 2573 transitions. Word has length 155 [2020-07-21 20:06:36,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:06:36,131 INFO L479 AbstractCegarLoop]: Abstraction has 2065 states and 2573 transitions. [2020-07-21 20:06:36,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 20:06:36,131 INFO L276 IsEmpty]: Start isEmpty. Operand 2065 states and 2573 transitions. [2020-07-21 20:06:36,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-07-21 20:06:36,138 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:06:36,138 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:06:36,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:06:36,356 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:06:36,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:06:36,357 INFO L82 PathProgramCache]: Analyzing trace with hash -2014965277, now seen corresponding path program 1 times [2020-07-21 20:06:36,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:06:36,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1286182121] [2020-07-21 20:06:36,358 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 20:06:36,487 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:06:36,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:06:36,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 20:06:36,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:06:36,564 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-21 20:06:36,564 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:06:36,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1286182121] [2020-07-21 20:06:36,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:06:36,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 20:06:36,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785909819] [2020-07-21 20:06:36,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 20:06:36,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:06:36,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 20:06:36,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 20:06:36,568 INFO L87 Difference]: Start difference. First operand 2065 states and 2573 transitions. Second operand 3 states. [2020-07-21 20:06:37,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:06:37,215 INFO L93 Difference]: Finished difference Result 5619 states and 7121 transitions. [2020-07-21 20:06:37,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 20:06:37,216 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 164 [2020-07-21 20:06:37,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:06:37,236 INFO L225 Difference]: With dead ends: 5619 [2020-07-21 20:06:37,236 INFO L226 Difference]: Without dead ends: 3564 [2020-07-21 20:06:37,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 162 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 20:06:37,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3564 states. [2020-07-21 20:06:37,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3564 to 3157. [2020-07-21 20:06:37,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3157 states. [2020-07-21 20:06:37,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3157 states to 3157 states and 3968 transitions. [2020-07-21 20:06:37,356 INFO L78 Accepts]: Start accepts. Automaton has 3157 states and 3968 transitions. Word has length 164 [2020-07-21 20:06:37,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:06:37,356 INFO L479 AbstractCegarLoop]: Abstraction has 3157 states and 3968 transitions. [2020-07-21 20:06:37,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 20:06:37,357 INFO L276 IsEmpty]: Start isEmpty. Operand 3157 states and 3968 transitions. [2020-07-21 20:06:37,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-07-21 20:06:37,367 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:06:37,367 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:06:37,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:06:37,582 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:06:37,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:06:37,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1170195216, now seen corresponding path program 1 times [2020-07-21 20:06:37,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:06:37,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746221451] [2020-07-21 20:06:37,583 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:06:37,688 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:06:37,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:06:37,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 20:06:37,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:06:37,761 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:06:37,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:06:37,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746221451] [2020-07-21 20:06:37,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:06:37,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 20:06:37,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63574603] [2020-07-21 20:06:37,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 20:06:37,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:06:37,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 20:06:37,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 20:06:37,764 INFO L87 Difference]: Start difference. First operand 3157 states and 3968 transitions. Second operand 3 states. [2020-07-21 20:06:38,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:06:38,416 INFO L93 Difference]: Finished difference Result 8754 states and 11202 transitions. [2020-07-21 20:06:38,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 20:06:38,416 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 163 [2020-07-21 20:06:38,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:06:38,455 INFO L225 Difference]: With dead ends: 8754 [2020-07-21 20:06:38,455 INFO L226 Difference]: Without dead ends: 5607 [2020-07-21 20:06:38,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 161 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 20:06:38,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5607 states. [2020-07-21 20:06:38,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5607 to 4932. [2020-07-21 20:06:38,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4932 states. [2020-07-21 20:06:38,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4932 states to 4932 states and 6273 transitions. [2020-07-21 20:06:38,638 INFO L78 Accepts]: Start accepts. Automaton has 4932 states and 6273 transitions. Word has length 163 [2020-07-21 20:06:38,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:06:38,639 INFO L479 AbstractCegarLoop]: Abstraction has 4932 states and 6273 transitions. [2020-07-21 20:06:38,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 20:06:38,639 INFO L276 IsEmpty]: Start isEmpty. Operand 4932 states and 6273 transitions. [2020-07-21 20:06:38,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-07-21 20:06:38,658 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:06:38,658 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:06:38,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:06:38,872 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:06:38,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:06:38,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1343005271, now seen corresponding path program 1 times [2020-07-21 20:06:38,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:06:38,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575573827] [2020-07-21 20:06:38,874 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:06:39,038 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:06:39,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:06:39,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 20:06:39,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:06:39,099 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 104 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-07-21 20:06:39,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 20:06:39,240 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 104 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-07-21 20:06:39,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575573827] [2020-07-21 20:06:39,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 20:06:39,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 20:06:39,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610651609] [2020-07-21 20:06:39,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 20:06:39,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:06:39,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 20:06:39,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 20:06:39,243 INFO L87 Difference]: Start difference. First operand 4932 states and 6273 transitions. Second operand 7 states. [2020-07-21 20:06:40,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:06:40,581 INFO L93 Difference]: Finished difference Result 12086 states and 15680 transitions. [2020-07-21 20:06:40,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 20:06:40,581 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 199 [2020-07-21 20:06:40,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:06:40,622 INFO L225 Difference]: With dead ends: 12086 [2020-07-21 20:06:40,623 INFO L226 Difference]: Without dead ends: 7164 [2020-07-21 20:06:40,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 396 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-07-21 20:06:40,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7164 states. [2020-07-21 20:06:40,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7164 to 6068. [2020-07-21 20:06:40,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6068 states. [2020-07-21 20:06:40,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6068 states to 6068 states and 7620 transitions. [2020-07-21 20:06:40,975 INFO L78 Accepts]: Start accepts. Automaton has 6068 states and 7620 transitions. Word has length 199 [2020-07-21 20:06:40,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:06:40,975 INFO L479 AbstractCegarLoop]: Abstraction has 6068 states and 7620 transitions. [2020-07-21 20:06:40,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 20:06:40,976 INFO L276 IsEmpty]: Start isEmpty. Operand 6068 states and 7620 transitions. [2020-07-21 20:06:41,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-07-21 20:06:41,010 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:06:41,011 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, 1, 1, 1, 1, 1, 1, 1, 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 20:06:41,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:06:41,225 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:06:41,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:06:41,226 INFO L82 PathProgramCache]: Analyzing trace with hash -417459975, now seen corresponding path program 1 times [2020-07-21 20:06:41,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:06:41,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286972308] [2020-07-21 20:06:41,227 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:06:41,465 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:06:41,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:06:41,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 20:06:41,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:06:41,563 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-07-21 20:06:41,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:06:41,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286972308] [2020-07-21 20:06:41,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:06:41,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 20:06:41,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089268966] [2020-07-21 20:06:41,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 20:06:41,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:06:41,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 20:06:41,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 20:06:41,568 INFO L87 Difference]: Start difference. First operand 6068 states and 7620 transitions. Second operand 3 states. [2020-07-21 20:06:42,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:06:42,192 INFO L93 Difference]: Finished difference Result 10506 states and 13183 transitions. [2020-07-21 20:06:42,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 20:06:42,192 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 218 [2020-07-21 20:06:42,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:06:42,197 INFO L225 Difference]: With dead ends: 10506 [2020-07-21 20:06:42,197 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 20:06:42,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 216 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 20:06:42,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 20:06:42,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 20:06:42,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 20:06:42,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 20:06:42,222 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 218 [2020-07-21 20:06:42,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:06:42,222 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 20:06:42,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 20:06:42,222 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 20:06:42,223 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 20:06:42,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:06:42,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 20:06:44,038 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 171 DAG size of output: 74 [2020-07-21 20:06:44,234 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 20:06:44,235 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a8~0 |old(~a8~0)|) (<= |old(~a16~0)| ~a16~0)) [2020-07-21 20:06:44,235 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 20:06:44,235 INFO L268 CegarLoopResult]: For program point L333(lines 333 390) no Hoare annotation was computed. [2020-07-21 20:06:44,235 INFO L268 CegarLoopResult]: For program point L102(lines 102 390) no Hoare annotation was computed. [2020-07-21 20:06:44,236 INFO L268 CegarLoopResult]: For program point L565-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,236 INFO L268 CegarLoopResult]: For program point L532-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,236 INFO L268 CegarLoopResult]: For program point L499-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,236 INFO L268 CegarLoopResult]: For program point L466-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,236 INFO L268 CegarLoopResult]: For program point L433-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,236 INFO L268 CegarLoopResult]: For program point L400-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,236 INFO L268 CegarLoopResult]: For program point L268(lines 268 390) no Hoare annotation was computed. [2020-07-21 20:06:44,236 INFO L268 CegarLoopResult]: For program point L136(lines 136 390) no Hoare annotation was computed. [2020-07-21 20:06:44,236 INFO L268 CegarLoopResult]: For program point L566(line 566) no Hoare annotation was computed. [2020-07-21 20:06:44,237 INFO L268 CegarLoopResult]: For program point L533(line 533) no Hoare annotation was computed. [2020-07-21 20:06:44,237 INFO L268 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2020-07-21 20:06:44,237 INFO L268 CegarLoopResult]: For program point L467(line 467) no Hoare annotation was computed. [2020-07-21 20:06:44,237 INFO L268 CegarLoopResult]: For program point L434(line 434) no Hoare annotation was computed. [2020-07-21 20:06:44,237 INFO L268 CegarLoopResult]: For program point L401(line 401) no Hoare annotation was computed. [2020-07-21 20:06:44,237 INFO L268 CegarLoopResult]: For program point L203(lines 203 390) no Hoare annotation was computed. [2020-07-21 20:06:44,237 INFO L268 CegarLoopResult]: For program point L72(lines 72 390) no Hoare annotation was computed. [2020-07-21 20:06:44,237 INFO L268 CegarLoopResult]: For program point L568-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,237 INFO L268 CegarLoopResult]: For program point L535-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,237 INFO L268 CegarLoopResult]: For program point L502-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,238 INFO L268 CegarLoopResult]: For program point L469-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,238 INFO L268 CegarLoopResult]: For program point L436-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,238 INFO L268 CegarLoopResult]: For program point L403-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,238 INFO L268 CegarLoopResult]: For program point L337(lines 337 390) no Hoare annotation was computed. [2020-07-21 20:06:44,238 INFO L268 CegarLoopResult]: For program point L238(lines 238 390) no Hoare annotation was computed. [2020-07-21 20:06:44,238 INFO L268 CegarLoopResult]: For program point L569(line 569) no Hoare annotation was computed. [2020-07-21 20:06:44,238 INFO L268 CegarLoopResult]: For program point L536(line 536) no Hoare annotation was computed. [2020-07-21 20:06:44,239 INFO L268 CegarLoopResult]: For program point L503(line 503) no Hoare annotation was computed. [2020-07-21 20:06:44,239 INFO L268 CegarLoopResult]: For program point L470(line 470) no Hoare annotation was computed. [2020-07-21 20:06:44,239 INFO L268 CegarLoopResult]: For program point L437(line 437) no Hoare annotation was computed. [2020-07-21 20:06:44,239 INFO L268 CegarLoopResult]: For program point L404(line 404) no Hoare annotation was computed. [2020-07-21 20:06:44,239 INFO L268 CegarLoopResult]: For program point L173(lines 173 390) no Hoare annotation was computed. [2020-07-21 20:06:44,239 INFO L268 CegarLoopResult]: For program point L140(lines 140 390) no Hoare annotation was computed. [2020-07-21 20:06:44,239 INFO L268 CegarLoopResult]: For program point L372(lines 372 390) no Hoare annotation was computed. [2020-07-21 20:06:44,240 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 545) no Hoare annotation was computed. [2020-07-21 20:06:44,240 INFO L268 CegarLoopResult]: For program point L306(lines 306 390) no Hoare annotation was computed. [2020-07-21 20:06:44,240 INFO L268 CegarLoopResult]: For program point L273(lines 273 390) no Hoare annotation was computed. [2020-07-21 20:06:44,240 INFO L268 CegarLoopResult]: For program point L108(lines 108 390) no Hoare annotation was computed. [2020-07-21 20:06:44,240 INFO L268 CegarLoopResult]: For program point L571-1(lines 571 573) no Hoare annotation was computed. [2020-07-21 20:06:44,240 INFO L268 CegarLoopResult]: For program point L538-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,240 INFO L268 CegarLoopResult]: For program point L505-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,240 INFO L268 CegarLoopResult]: For program point L472-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,240 INFO L268 CegarLoopResult]: For program point L439-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,240 INFO L268 CegarLoopResult]: For program point L406-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,241 INFO L268 CegarLoopResult]: For program point L208(lines 208 390) no Hoare annotation was computed. [2020-07-21 20:06:44,241 INFO L268 CegarLoopResult]: For program point L43(lines 43 390) no Hoare annotation was computed. [2020-07-21 20:06:44,241 INFO L268 CegarLoopResult]: For program point L572(line 572) no Hoare annotation was computed. [2020-07-21 20:06:44,241 INFO L268 CegarLoopResult]: For program point L539(line 539) no Hoare annotation was computed. [2020-07-21 20:06:44,241 INFO L268 CegarLoopResult]: For program point L506(line 506) no Hoare annotation was computed. [2020-07-21 20:06:44,241 INFO L268 CegarLoopResult]: For program point L473(line 473) no Hoare annotation was computed. [2020-07-21 20:06:44,241 INFO L268 CegarLoopResult]: For program point L440(line 440) no Hoare annotation was computed. [2020-07-21 20:06:44,241 INFO L268 CegarLoopResult]: For program point L407(line 407) no Hoare annotation was computed. [2020-07-21 20:06:44,241 INFO L268 CegarLoopResult]: For program point L144(lines 144 390) no Hoare annotation was computed. [2020-07-21 20:06:44,241 INFO L268 CegarLoopResult]: For program point L541-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,241 INFO L268 CegarLoopResult]: For program point L508-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,241 INFO L268 CegarLoopResult]: For program point L475-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,242 INFO L268 CegarLoopResult]: For program point L442-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,242 INFO L268 CegarLoopResult]: For program point L409-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,242 INFO L268 CegarLoopResult]: For program point L178(lines 178 390) no Hoare annotation was computed. [2020-07-21 20:06:44,242 INFO L268 CegarLoopResult]: For program point L542(line 542) no Hoare annotation was computed. [2020-07-21 20:06:44,242 INFO L268 CegarLoopResult]: For program point L509(line 509) no Hoare annotation was computed. [2020-07-21 20:06:44,242 INFO L268 CegarLoopResult]: For program point L476(line 476) no Hoare annotation was computed. [2020-07-21 20:06:44,242 INFO L268 CegarLoopResult]: For program point L443(line 443) no Hoare annotation was computed. [2020-07-21 20:06:44,242 INFO L268 CegarLoopResult]: For program point L410(line 410) no Hoare annotation was computed. [2020-07-21 20:06:44,243 INFO L268 CegarLoopResult]: For program point L377(lines 377 390) no Hoare annotation was computed. [2020-07-21 20:06:44,243 INFO L268 CegarLoopResult]: For program point L278(lines 278 390) no Hoare annotation was computed. [2020-07-21 20:06:44,243 INFO L268 CegarLoopResult]: For program point L245(lines 245 390) no Hoare annotation was computed. [2020-07-21 20:06:44,243 INFO L268 CegarLoopResult]: For program point L80(lines 80 390) no Hoare annotation was computed. [2020-07-21 20:06:44,243 INFO L268 CegarLoopResult]: For program point L345(lines 345 390) no Hoare annotation was computed. [2020-07-21 20:06:44,243 INFO L268 CegarLoopResult]: For program point L312(lines 312 390) no Hoare annotation was computed. [2020-07-21 20:06:44,243 INFO L268 CegarLoopResult]: For program point L114(lines 114 390) no Hoare annotation was computed. [2020-07-21 20:06:44,243 INFO L268 CegarLoopResult]: For program point L544-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,243 INFO L268 CegarLoopResult]: For program point L511-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,244 INFO L268 CegarLoopResult]: For program point L478-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,244 INFO L268 CegarLoopResult]: For program point L445-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,244 INFO L268 CegarLoopResult]: For program point L412-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,244 INFO L268 CegarLoopResult]: For program point L214(lines 214 390) no Hoare annotation was computed. [2020-07-21 20:06:44,244 INFO L268 CegarLoopResult]: For program point L148(lines 148 390) no Hoare annotation was computed. [2020-07-21 20:06:44,244 INFO L268 CegarLoopResult]: For program point L49(lines 49 390) no Hoare annotation was computed. [2020-07-21 20:06:44,244 INFO L268 CegarLoopResult]: For program point L545(line 545) no Hoare annotation was computed. [2020-07-21 20:06:44,244 INFO L268 CegarLoopResult]: For program point L512(line 512) no Hoare annotation was computed. [2020-07-21 20:06:44,244 INFO L268 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2020-07-21 20:06:44,244 INFO L268 CegarLoopResult]: For program point L446(line 446) no Hoare annotation was computed. [2020-07-21 20:06:44,245 INFO L268 CegarLoopResult]: For program point L413(line 413) no Hoare annotation was computed. [2020-07-21 20:06:44,245 INFO L268 CegarLoopResult]: For program point L84(lines 84 390) no Hoare annotation was computed. [2020-07-21 20:06:44,245 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,245 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,245 INFO L268 CegarLoopResult]: For program point L547-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,245 INFO L268 CegarLoopResult]: For program point L514-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,245 INFO L268 CegarLoopResult]: For program point L481-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,245 INFO L268 CegarLoopResult]: For program point L448-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,245 INFO L268 CegarLoopResult]: For program point L382(lines 382 390) no Hoare annotation was computed. [2020-07-21 20:06:44,245 INFO L268 CegarLoopResult]: For program point L415-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,245 INFO L268 CegarLoopResult]: For program point L316(lines 316 390) no Hoare annotation was computed. [2020-07-21 20:06:44,245 INFO L268 CegarLoopResult]: For program point L250(lines 250 390) no Hoare annotation was computed. [2020-07-21 20:06:44,245 INFO L268 CegarLoopResult]: For program point L548(line 548) no Hoare annotation was computed. [2020-07-21 20:06:44,245 INFO L268 CegarLoopResult]: For program point L515(line 515) no Hoare annotation was computed. [2020-07-21 20:06:44,246 INFO L268 CegarLoopResult]: For program point L482(line 482) no Hoare annotation was computed. [2020-07-21 20:06:44,246 INFO L268 CegarLoopResult]: For program point L449(line 449) no Hoare annotation was computed. [2020-07-21 20:06:44,246 INFO L268 CegarLoopResult]: For program point L416(line 416) no Hoare annotation was computed. [2020-07-21 20:06:44,246 INFO L268 CegarLoopResult]: For program point L218(lines 218 390) no Hoare annotation was computed. [2020-07-21 20:06:44,246 INFO L268 CegarLoopResult]: For program point L152(lines 152 390) no Hoare annotation was computed. [2020-07-21 20:06:44,246 INFO L268 CegarLoopResult]: For program point L119(lines 119 390) no Hoare annotation was computed. [2020-07-21 20:06:44,246 INFO L268 CegarLoopResult]: For program point L318(lines 318 390) no Hoare annotation was computed. [2020-07-21 20:06:44,246 INFO L268 CegarLoopResult]: For program point L186(lines 186 390) no Hoare annotation was computed. [2020-07-21 20:06:44,246 INFO L268 CegarLoopResult]: For program point L54(lines 54 390) no Hoare annotation was computed. [2020-07-21 20:06:44,246 INFO L268 CegarLoopResult]: For program point L550-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,246 INFO L268 CegarLoopResult]: For program point L517-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,246 INFO L268 CegarLoopResult]: For program point L484-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,246 INFO L268 CegarLoopResult]: For program point L451-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,246 INFO L268 CegarLoopResult]: For program point L418-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,247 INFO L268 CegarLoopResult]: For program point L286(lines 286 390) no Hoare annotation was computed. [2020-07-21 20:06:44,247 INFO L268 CegarLoopResult]: For program point L551(line 551) no Hoare annotation was computed. [2020-07-21 20:06:44,247 INFO L268 CegarLoopResult]: For program point L518(line 518) no Hoare annotation was computed. [2020-07-21 20:06:44,247 INFO L268 CegarLoopResult]: For program point L485(line 485) no Hoare annotation was computed. [2020-07-21 20:06:44,247 INFO L268 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2020-07-21 20:06:44,247 INFO L268 CegarLoopResult]: For program point L419(line 419) no Hoare annotation was computed. [2020-07-21 20:06:44,247 INFO L268 CegarLoopResult]: For program point L353(lines 353 390) no Hoare annotation was computed. [2020-07-21 20:06:44,247 INFO L268 CegarLoopResult]: For program point L189(lines 189 390) no Hoare annotation was computed. [2020-07-21 20:06:44,248 INFO L268 CegarLoopResult]: For program point L553-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,248 INFO L268 CegarLoopResult]: For program point L520-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,248 INFO L268 CegarLoopResult]: For program point L487-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,248 INFO L268 CegarLoopResult]: For program point L454-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,248 INFO L268 CegarLoopResult]: For program point L421-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,248 INFO L268 CegarLoopResult]: For program point L355(lines 355 390) no Hoare annotation was computed. [2020-07-21 20:06:44,248 INFO L268 CegarLoopResult]: For program point L256(lines 256 390) no Hoare annotation was computed. [2020-07-21 20:06:44,248 INFO L268 CegarLoopResult]: For program point L223(lines 223 390) no Hoare annotation was computed. [2020-07-21 20:06:44,248 INFO L268 CegarLoopResult]: For program point L124(lines 124 390) no Hoare annotation was computed. [2020-07-21 20:06:44,248 INFO L268 CegarLoopResult]: For program point L554(line 554) no Hoare annotation was computed. [2020-07-21 20:06:44,248 INFO L268 CegarLoopResult]: For program point L521(line 521) no Hoare annotation was computed. [2020-07-21 20:06:44,248 INFO L268 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2020-07-21 20:06:44,249 INFO L268 CegarLoopResult]: For program point L455(line 455) no Hoare annotation was computed. [2020-07-21 20:06:44,249 INFO L268 CegarLoopResult]: For program point L422(line 422) no Hoare annotation was computed. [2020-07-21 20:06:44,249 INFO L268 CegarLoopResult]: For program point L92(lines 92 390) no Hoare annotation was computed. [2020-07-21 20:06:44,249 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 30 575) the Hoare annotation is: (let ((.cse0 (<= ~a8~0 |old(~a8~0)|)) (.cse6 (<= |old(~a16~0)| ~a16~0))) (let ((.cse3 (<= ~a20~0 0)) (.cse4 (<= ~a17~0 0)) (.cse5 (not (<= |old(~a17~0)| 0))) (.cse10 (not (<= |old(~a7~0)| 0))) (.cse11 (and .cse0 .cse6)) (.cse1 (not (<= 15 |old(~a8~0)|))) (.cse12 (not (<= |old(~a21~0)| 0))) (.cse8 (not (<= |old(~a8~0)| 13))) (.cse2 (not (<= |old(~a20~0)| 0))) (.cse9 (not (<= |old(~a16~0)| 4))) (.cse7 (<= ~a16~0 4))) (and (or (and .cse0 (<= 15 ~a8~0)) .cse1) (or .cse1 .cse2 .cse3) (or .cse1 .cse4 .cse5) (or (and (<= ~a8~0 13) .cse6 .cse3 .cse7) (and .cse6 .cse4 (< ~a8~0 15) .cse3) (and (or .cse8 .cse2 .cse9) (or .cse2 (not (< |old(~a8~0)| 15)) .cse5))) (or .cse10 .cse11) (or (and .cse0 .cse6 .cse7) (and .cse0 .cse6 .cse4) (and (or .cse8 .cse9) (or (not (< 4 |old(~a16~0)|)) .cse5))) (or (<= ~a7~0 0) .cse10) (or .cse1 .cse6) (or .cse12 .cse8 .cse11) (or .cse1 .cse9 .cse7) (or (<= ~a21~0 0) .cse12 .cse8) (or .cse12 .cse8 .cse2 .cse9 .cse7)))) [2020-07-21 20:06:44,249 INFO L268 CegarLoopResult]: For program point L324(lines 324 390) no Hoare annotation was computed. [2020-07-21 20:06:44,249 INFO L268 CegarLoopResult]: For program point L556-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,249 INFO L268 CegarLoopResult]: For program point L523-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,249 INFO L268 CegarLoopResult]: For program point L490-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,249 INFO L268 CegarLoopResult]: For program point L457-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,249 INFO L268 CegarLoopResult]: For program point L391(lines 391 393) no Hoare annotation was computed. [2020-07-21 20:06:44,249 INFO L268 CegarLoopResult]: For program point L424-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,250 INFO L268 CegarLoopResult]: For program point L391-2(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,250 INFO L268 CegarLoopResult]: For program point L292(lines 292 390) no Hoare annotation was computed. [2020-07-21 20:06:44,250 INFO L268 CegarLoopResult]: For program point L160(lines 160 390) no Hoare annotation was computed. [2020-07-21 20:06:44,250 INFO L268 CegarLoopResult]: For program point L557(line 557) no Hoare annotation was computed. [2020-07-21 20:06:44,250 INFO L268 CegarLoopResult]: For program point L524(line 524) no Hoare annotation was computed. [2020-07-21 20:06:44,250 INFO L268 CegarLoopResult]: For program point L491(line 491) no Hoare annotation was computed. [2020-07-21 20:06:44,250 INFO L268 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2020-07-21 20:06:44,250 INFO L268 CegarLoopResult]: For program point L425(line 425) no Hoare annotation was computed. [2020-07-21 20:06:44,250 INFO L268 CegarLoopResult]: For program point L392(line 392) no Hoare annotation was computed. [2020-07-21 20:06:44,250 INFO L268 CegarLoopResult]: For program point L194(lines 194 390) no Hoare annotation was computed. [2020-07-21 20:06:44,250 INFO L268 CegarLoopResult]: For program point L62(lines 62 390) no Hoare annotation was computed. [2020-07-21 20:06:44,250 INFO L268 CegarLoopResult]: For program point L261(lines 261 390) no Hoare annotation was computed. [2020-07-21 20:06:44,250 INFO L268 CegarLoopResult]: For program point L129(lines 129 390) no Hoare annotation was computed. [2020-07-21 20:06:44,250 INFO L268 CegarLoopResult]: For program point L559-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,251 INFO L268 CegarLoopResult]: For program point L526-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,251 INFO L268 CegarLoopResult]: For program point L493-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,251 INFO L268 CegarLoopResult]: For program point L460-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,251 INFO L268 CegarLoopResult]: For program point L427-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,251 INFO L268 CegarLoopResult]: For program point L361(lines 361 390) no Hoare annotation was computed. [2020-07-21 20:06:44,251 INFO L268 CegarLoopResult]: For program point L394-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,251 INFO L268 CegarLoopResult]: For program point L97(lines 97 390) no Hoare annotation was computed. [2020-07-21 20:06:44,251 INFO L268 CegarLoopResult]: For program point L31(lines 31 390) no Hoare annotation was computed. [2020-07-21 20:06:44,251 INFO L268 CegarLoopResult]: For program point L560(line 560) no Hoare annotation was computed. [2020-07-21 20:06:44,252 INFO L268 CegarLoopResult]: For program point L527(line 527) no Hoare annotation was computed. [2020-07-21 20:06:44,252 INFO L268 CegarLoopResult]: For program point L494(line 494) no Hoare annotation was computed. [2020-07-21 20:06:44,252 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-21 20:06:44,252 INFO L268 CegarLoopResult]: For program point L428(line 428) no Hoare annotation was computed. [2020-07-21 20:06:44,252 INFO L268 CegarLoopResult]: For program point L395(line 395) no Hoare annotation was computed. [2020-07-21 20:06:44,252 INFO L268 CegarLoopResult]: For program point L329(lines 329 390) no Hoare annotation was computed. [2020-07-21 20:06:44,252 INFO L268 CegarLoopResult]: For program point L197(lines 197 390) no Hoare annotation was computed. [2020-07-21 20:06:44,252 INFO L268 CegarLoopResult]: For program point L65(lines 65 390) no Hoare annotation was computed. [2020-07-21 20:06:44,252 INFO L268 CegarLoopResult]: For program point L363(lines 363 390) no Hoare annotation was computed. [2020-07-21 20:06:44,253 INFO L268 CegarLoopResult]: For program point L231(lines 231 390) no Hoare annotation was computed. [2020-07-21 20:06:44,253 INFO L268 CegarLoopResult]: For program point L165(lines 165 390) no Hoare annotation was computed. [2020-07-21 20:06:44,253 INFO L268 CegarLoopResult]: For program point L562-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,253 INFO L268 CegarLoopResult]: For program point L529-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,253 INFO L268 CegarLoopResult]: For program point L496-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,253 INFO L268 CegarLoopResult]: For program point L463-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,253 INFO L268 CegarLoopResult]: For program point L430-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,253 INFO L268 CegarLoopResult]: For program point L397-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:06:44,253 INFO L268 CegarLoopResult]: For program point L265(lines 265 390) no Hoare annotation was computed. [2020-07-21 20:06:44,253 INFO L268 CegarLoopResult]: For program point L563(line 563) no Hoare annotation was computed. [2020-07-21 20:06:44,254 INFO L268 CegarLoopResult]: For program point L530(line 530) no Hoare annotation was computed. [2020-07-21 20:06:44,254 INFO L268 CegarLoopResult]: For program point L497(line 497) no Hoare annotation was computed. [2020-07-21 20:06:44,254 INFO L268 CegarLoopResult]: For program point L464(line 464) no Hoare annotation was computed. [2020-07-21 20:06:44,254 INFO L268 CegarLoopResult]: For program point L431(line 431) no Hoare annotation was computed. [2020-07-21 20:06:44,254 INFO L268 CegarLoopResult]: For program point L398(line 398) no Hoare annotation was computed. [2020-07-21 20:06:44,254 INFO L268 CegarLoopResult]: For program point L365(lines 365 390) no Hoare annotation was computed. [2020-07-21 20:06:44,254 INFO L268 CegarLoopResult]: For program point L299(lines 299 390) no Hoare annotation was computed. [2020-07-21 20:06:44,254 INFO L268 CegarLoopResult]: For program point L35(lines 35 390) no Hoare annotation was computed. [2020-07-21 20:06:44,254 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 20:06:44,255 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a7~0 0) (<= 15 ~a8~0) (< 4 ~a16~0)) [2020-07-21 20:06:44,255 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 20:06:44,255 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 20:06:44,255 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 577 594) the Hoare annotation is: (or (not (<= 15 |old(~a8~0)|)) (and (<= ~a8~0 |old(~a8~0)|) (<= |old(~a16~0)| ~a16~0) (<= ~a7~0 0) (<= 15 ~a8~0)) (not (<= |old(~a7~0)| 0)) (not (< 4 |old(~a16~0)|))) [2020-07-21 20:06:44,255 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 577 594) no Hoare annotation was computed. [2020-07-21 20:06:44,255 INFO L264 CegarLoopResult]: At program point L591(line 591) the Hoare annotation is: (let ((.cse0 (<= ~a17~0 0)) (.cse1 (<= ~a8~0 13))) (or (and .cse0 (< 4 ~a16~0)) (and .cse1 (<= ~a16~0 4)) (not (<= 15 |old(~a8~0)|)) (and .cse0 (<= ~a20~0 0)) (not (<= |old(~a7~0)| 0)) (<= ~a7~0 0) (<= 15 ~a8~0) (not (< 4 |old(~a16~0)|)) (and .cse1 (<= ~a21~0 0)))) [2020-07-21 20:06:44,255 INFO L268 CegarLoopResult]: For program point L591-1(line 591) no Hoare annotation was computed. [2020-07-21 20:06:44,256 INFO L268 CegarLoopResult]: For program point L588(line 588) no Hoare annotation was computed. [2020-07-21 20:06:44,256 INFO L264 CegarLoopResult]: At program point L583-2(lines 583 593) the Hoare annotation is: (let ((.cse0 (<= ~a17~0 0)) (.cse1 (<= ~a8~0 13))) (or (and .cse0 (< 4 ~a16~0)) (and .cse1 (<= ~a16~0 4)) (not (<= 15 |old(~a8~0)|)) (and .cse0 (<= ~a20~0 0)) (not (<= |old(~a7~0)| 0)) (<= ~a7~0 0) (<= 15 ~a8~0) (not (< 4 |old(~a16~0)|)) (and .cse1 (<= ~a21~0 0)))) [2020-07-21 20:06:44,256 INFO L268 CegarLoopResult]: For program point L583-3(lines 577 594) no Hoare annotation was computed. [2020-07-21 20:06:44,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 08:06:44 BoogieIcfgContainer [2020-07-21 20:06:44,276 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 20:06:44,278 INFO L168 Benchmark]: Toolchain (without parser) took 17086.10 ms. Allocated memory was 136.3 MB in the beginning and 453.5 MB in the end (delta: 317.2 MB). Free memory was 98.6 MB in the beginning and 187.2 MB in the end (delta: -88.6 MB). Peak memory consumption was 354.8 MB. Max. memory is 7.1 GB. [2020-07-21 20:06:44,279 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 136.3 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 20:06:44,280 INFO L168 Benchmark]: CACSL2BoogieTranslator took 765.43 ms. Allocated memory was 136.3 MB in the beginning and 202.9 MB in the end (delta: 66.6 MB). Free memory was 98.1 MB in the beginning and 169.3 MB in the end (delta: -71.2 MB). Peak memory consumption was 36.6 MB. Max. memory is 7.1 GB. [2020-07-21 20:06:44,281 INFO L168 Benchmark]: Boogie Preprocessor took 141.58 ms. Allocated memory is still 202.9 MB. Free memory was 169.3 MB in the beginning and 164.3 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. [2020-07-21 20:06:44,282 INFO L168 Benchmark]: RCFGBuilder took 1231.33 ms. Allocated memory was 202.9 MB in the beginning and 232.3 MB in the end (delta: 29.4 MB). Free memory was 164.3 MB in the beginning and 177.9 MB in the end (delta: -13.6 MB). Peak memory consumption was 86.7 MB. Max. memory is 7.1 GB. [2020-07-21 20:06:44,282 INFO L168 Benchmark]: TraceAbstraction took 14940.62 ms. Allocated memory was 232.3 MB in the beginning and 453.5 MB in the end (delta: 221.2 MB). Free memory was 177.9 MB in the beginning and 187.2 MB in the end (delta: -9.3 MB). Peak memory consumption was 338.2 MB. Max. memory is 7.1 GB. [2020-07-21 20:06:44,286 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 136.3 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 765.43 ms. Allocated memory was 136.3 MB in the beginning and 202.9 MB in the end (delta: 66.6 MB). Free memory was 98.1 MB in the beginning and 169.3 MB in the end (delta: -71.2 MB). Peak memory consumption was 36.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 141.58 ms. Allocated memory is still 202.9 MB. Free memory was 169.3 MB in the beginning and 164.3 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1231.33 ms. Allocated memory was 202.9 MB in the beginning and 232.3 MB in the end (delta: 29.4 MB). Free memory was 164.3 MB in the beginning and 177.9 MB in the end (delta: -13.6 MB). Peak memory consumption was 86.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14940.62 ms. Allocated memory was 232.3 MB in the beginning and 453.5 MB in the end (delta: 221.2 MB). Free memory was 177.9 MB in the beginning and 187.2 MB in the end (delta: -9.3 MB). Peak memory consumption was 338.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 545]: 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: ((((((((a17 <= 0 && 4 < a16) || (a8 <= 13 && a16 <= 4)) || !(15 <= \old(a8))) || (a17 <= 0 && a20 <= 0)) || !(\old(a7) <= 0)) || a7 <= 0) || 15 <= a8) || !(4 < \old(a16))) || (a8 <= 13 && a21 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.0s, OverallIterations: 8, TraceHistogramMax: 5, AutomataDifference: 7.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1025 SDtfs, 1549 SDslu, 241 SDs, 0 SdLazy, 5244 SolverSat, 673 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1675 GetRequests, 1648 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6068occurred 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: 0.9s AutomataMinimizationTime, 8 MinimizatonAttempts, 2385 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 170 PreInvPairs, 260 NumberOfFragments, 357 HoareAnnotationTreeSize, 170 FomulaSimplifications, 3767 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 7 FomulaSimplificationsInter, 1786 FormulaSimplificationTreeSizeReductionInter, 1.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 1311 NumberOfCodeBlocks, 1311 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1655 ConstructedInterpolants, 0 QuantifiedInterpolants, 560281 SizeOfPredicates, 14 NumberOfNonLiveVariables, 3563 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 612/620 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...