/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 BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 22:50:22,094 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-21 22:50:22,141 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 22:50:22,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 22:50:22,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 22:50:22,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 22:50:22,148 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 22:50:22,149 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 22:50:22,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 22:50:22,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 22:50:22,160 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 22:50:22,164 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 22:50:22,165 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 22:50:22,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 22:50:22,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 22:50:22,178 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 22:50:22,179 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 22:50:22,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 22:50:22,181 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 22:50:22,217 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 22:50:22,217 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 22:50:22,218 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 22:50:22,218 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 22:50:22,219 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 22:50:22,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 22:50:22,219 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 22:50:22,219 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 22:50:22,219 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 22:50:22,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 22:50:22,220 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 22:50:22,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 22:50:22,220 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 22:50:22,220 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 22:50:22,220 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 22:50:22,221 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 22:50:22,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 22:50:22,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 22:50:22,221 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 22:50:22,221 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 22:50:22,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 22:50:22,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 22:50:22,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 22:50:22,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 22:50:22,223 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 22:50:22,223 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 22:50:22,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:50:22,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 22:50:22,223 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 22:50:22,223 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 -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 22:50:22,551 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 22:50:22,573 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 22:50:22,576 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 22:50:22,578 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 22:50:22,578 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 22:50:22,580 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label13.c [2020-07-21 22:50:22,662 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8e99bb68/c9ba20c324f249c5a78834129a3d443b/FLAG839cc7418 [2020-07-21 22:50:23,243 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 22:50:23,244 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label13.c [2020-07-21 22:50:23,257 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8e99bb68/c9ba20c324f249c5a78834129a3d443b/FLAG839cc7418 [2020-07-21 22:50:23,497 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8e99bb68/c9ba20c324f249c5a78834129a3d443b [2020-07-21 22:50:23,508 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 22:50:23,511 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 22:50:23,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 22:50:23,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 22:50:23,516 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 22:50:23,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:50:23" (1/1) ... [2020-07-21 22:50:23,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@143da84a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:50:23, skipping insertion in model container [2020-07-21 22:50:23,521 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:50:23" (1/1) ... [2020-07-21 22:50:23,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 22:50:23,592 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 22:50:23,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:50:23,998 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 22:50:24,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:50:24,214 INFO L208 MainTranslator]: Completed translation [2020-07-21 22:50:24,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:50:24 WrapperNode [2020-07-21 22:50:24,215 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 22:50:24,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 22:50:24,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 22:50:24,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 22:50:24,230 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:50:24" (1/1) ... [2020-07-21 22:50:24,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:50:24" (1/1) ... [2020-07-21 22:50:24,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:50:24" (1/1) ... [2020-07-21 22:50:24,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:50:24" (1/1) ... [2020-07-21 22:50:24,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:50:24" (1/1) ... [2020-07-21 22:50:24,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:50:24" (1/1) ... [2020-07-21 22:50:24,328 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:50:24" (1/1) ... [2020-07-21 22:50:24,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 22:50:24,341 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 22:50:24,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 22:50:24,341 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 22:50:24,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:50:24" (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 22:50:24,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 22:50:24,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 22:50:24,404 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 22:50:24,404 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 22:50:24,404 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 22:50:24,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 22:50:24,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 22:50:24,406 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 22:50:24,406 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 22:50:24,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 22:50:24,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 22:50:25,491 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 22:50:25,491 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 22:50:25,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:50:25 BoogieIcfgContainer [2020-07-21 22:50:25,498 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 22:50:25,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 22:50:25,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 22:50:25,503 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 22:50:25,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:50:23" (1/3) ... [2020-07-21 22:50:25,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a33665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:50:25, skipping insertion in model container [2020-07-21 22:50:25,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:50:24" (2/3) ... [2020-07-21 22:50:25,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a33665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:50:25, skipping insertion in model container [2020-07-21 22:50:25,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:50:25" (3/3) ... [2020-07-21 22:50:25,508 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label13.c [2020-07-21 22:50:25,521 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 22:50:25,529 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 22:50:25,547 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 22:50:25,577 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 22:50:25,578 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 22:50:25,578 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 22:50:25,578 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 22:50:25,578 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 22:50:25,578 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 22:50:25,579 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 22:50:25,579 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 22:50:25,605 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-07-21 22:50:25,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-07-21 22:50:25,620 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:50:25,622 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 22:50:25,622 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:50:25,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:50:25,629 INFO L82 PathProgramCache]: Analyzing trace with hash -2118591881, now seen corresponding path program 1 times [2020-07-21 22:50:25,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:50:25,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851304375] [2020-07-21 22:50:25,643 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 22:50:25,831 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:50:25,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:50:25,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 68 conjunts are in the unsatisfiable core [2020-07-21 22:50:25,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:50:26,260 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 31 [2020-07-21 22:50:26,405 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 29 [2020-07-21 22:50:26,871 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 22:50:26,871 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:50:26,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851304375] [2020-07-21 22:50:26,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:50:26,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-21 22:50:26,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650337922] [2020-07-21 22:50:26,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-21 22:50:26,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:50:26,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-21 22:50:26,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-07-21 22:50:26,897 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 11 states. [2020-07-21 22:50:28,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:50:28,535 INFO L93 Difference]: Finished difference Result 472 states and 791 transitions. [2020-07-21 22:50:28,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 22:50:28,537 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 129 [2020-07-21 22:50:28,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:50:28,550 INFO L225 Difference]: With dead ends: 472 [2020-07-21 22:50:28,551 INFO L226 Difference]: Without dead ends: 203 [2020-07-21 22:50:28,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=102, Invalid=170, Unknown=0, NotChecked=0, Total=272 [2020-07-21 22:50:28,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-07-21 22:50:28,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-07-21 22:50:28,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-07-21 22:50:28,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 275 transitions. [2020-07-21 22:50:28,616 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 275 transitions. Word has length 129 [2020-07-21 22:50:28,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:50:28,617 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 275 transitions. [2020-07-21 22:50:28,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-21 22:50:28,618 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 275 transitions. [2020-07-21 22:50:28,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-07-21 22:50:28,621 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:50:28,622 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1] [2020-07-21 22:50:28,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:50:28,837 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:50:28,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:50:28,838 INFO L82 PathProgramCache]: Analyzing trace with hash 74056444, now seen corresponding path program 1 times [2020-07-21 22:50:28,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:50:28,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981406595] [2020-07-21 22:50:28,839 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:50:28,944 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:50:28,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:50:28,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 48 conjunts are in the unsatisfiable core [2020-07-21 22:50:28,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:50:29,601 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:50:29,605 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2020-07-21 22:50:29,606 INFO L501 QuantifierPusher]: Distributing 1 conjuncts over 2 disjuncts [2020-07-21 22:50:29,725 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:50:29,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:50:30,423 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-07-21 22:50:30,567 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-07-21 22:50:30,750 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-07-21 22:50:30,894 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-07-21 22:50:30,901 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 7 conjuncts [2020-07-21 22:50:30,903 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 6 conjuncts [2020-07-21 22:50:30,906 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 5 conjuncts [2020-07-21 22:50:30,909 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 4 conjuncts [2020-07-21 22:50:30,911 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:50:30,913 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 2 conjuncts [2020-07-21 22:50:30,919 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 5 conjuncts [2020-07-21 22:50:30,925 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 4 conjuncts [2020-07-21 22:50:30,927 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:50:30,939 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:50:30,942 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:50:30,945 INFO L501 QuantifierPusher]: Distributing 14 disjuncts over 3 conjuncts [2020-07-21 22:50:30,948 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 22:50:30,950 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 22:50:30,952 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:50:30,961 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:50:30,963 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:50:30,966 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:50:30,968 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:50:30,972 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:50:30,973 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:50:30,985 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 22:50:30,986 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:50:30,988 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 22:50:30,989 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:50:31,552 WARN L193 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 37 [2020-07-21 22:50:31,555 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 8, 6, 7, 1] term [2020-07-21 22:50:31,556 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 22:50:31,617 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 22:50:31,618 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:31,679 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:31,704 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:31,917 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:50:31,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981406595] [2020-07-21 22:50:31,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:50:31,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 25 [2020-07-21 22:50:31,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627232174] [2020-07-21 22:50:31,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-21 22:50:31,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:50:31,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-21 22:50:31,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2020-07-21 22:50:31,933 INFO L87 Difference]: Start difference. First operand 203 states and 275 transitions. Second operand 25 states. [2020-07-21 22:50:32,941 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-07-21 22:50:33,515 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2020-07-21 22:50:33,812 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-07-21 22:50:34,270 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 22:50:34,477 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-07-21 22:50:34,944 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-07-21 22:50:37,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:50:37,253 INFO L93 Difference]: Finished difference Result 588 states and 878 transitions. [2020-07-21 22:50:37,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-21 22:50:37,254 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 137 [2020-07-21 22:50:37,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:50:37,260 INFO L225 Difference]: With dead ends: 588 [2020-07-21 22:50:37,260 INFO L226 Difference]: Without dead ends: 451 [2020-07-21 22:50:37,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 246 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=551, Invalid=1611, Unknown=0, NotChecked=0, Total=2162 [2020-07-21 22:50:37,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-07-21 22:50:37,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 417. [2020-07-21 22:50:37,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-07-21 22:50:37,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 548 transitions. [2020-07-21 22:50:37,341 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 548 transitions. Word has length 137 [2020-07-21 22:50:37,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:50:37,343 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 548 transitions. [2020-07-21 22:50:37,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-21 22:50:37,343 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 548 transitions. [2020-07-21 22:50:37,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-07-21 22:50:37,350 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:50:37,350 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2020-07-21 22:50:37,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:50:37,562 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:50:37,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:50:37,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1517924030, now seen corresponding path program 1 times [2020-07-21 22:50:37,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:50:37,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999526885] [2020-07-21 22:50:37,565 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:50:37,676 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:50:37,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:50:37,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:50:37,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:50:37,731 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:50:37,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:50:37,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999526885] [2020-07-21 22:50:37,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:50:37,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 22:50:37,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941892843] [2020-07-21 22:50:37,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 22:50:37,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:50:37,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 22:50:37,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:50:37,736 INFO L87 Difference]: Start difference. First operand 417 states and 548 transitions. Second operand 3 states. [2020-07-21 22:50:38,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:50:38,287 INFO L93 Difference]: Finished difference Result 1042 states and 1433 transitions. [2020-07-21 22:50:38,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 22:50:38,295 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 140 [2020-07-21 22:50:38,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:50:38,305 INFO L225 Difference]: With dead ends: 1042 [2020-07-21 22:50:38,305 INFO L226 Difference]: Without dead ends: 691 [2020-07-21 22:50:38,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 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 22:50:38,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2020-07-21 22:50:38,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 691. [2020-07-21 22:50:38,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-07-21 22:50:38,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 897 transitions. [2020-07-21 22:50:38,340 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 897 transitions. Word has length 140 [2020-07-21 22:50:38,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:50:38,341 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 897 transitions. [2020-07-21 22:50:38,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 22:50:38,341 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 897 transitions. [2020-07-21 22:50:38,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-07-21 22:50:38,345 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:50:38,345 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2020-07-21 22:50:38,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:50:38,556 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:50:38,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:50:38,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1707010273, now seen corresponding path program 1 times [2020-07-21 22:50:38,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:50:38,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317733877] [2020-07-21 22:50:38,559 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:50:38,673 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 22:50:38,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:50:38,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 22:50:38,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:50:38,722 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:50:38,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:50:38,939 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2020-07-21 22:50:38,988 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:38,989 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[4, 2, 1] term [2020-07-21 22:50:38,989 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:50:38,990 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 22:50:38,990 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:38,991 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:39,089 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:50:39,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317733877] [2020-07-21 22:50:39,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:50:39,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:50:39,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980068147] [2020-07-21 22:50:39,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:50:39,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:50:39,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:50:39,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:50:39,091 INFO L87 Difference]: Start difference. First operand 691 states and 897 transitions. Second operand 7 states. [2020-07-21 22:50:40,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:50:40,385 INFO L93 Difference]: Finished difference Result 1933 states and 2552 transitions. [2020-07-21 22:50:40,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 22:50:40,386 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 155 [2020-07-21 22:50:40,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:50:40,396 INFO L225 Difference]: With dead ends: 1933 [2020-07-21 22:50:40,401 INFO L226 Difference]: Without dead ends: 1169 [2020-07-21 22:50:40,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 306 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-07-21 22:50:40,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2020-07-21 22:50:40,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1106. [2020-07-21 22:50:40,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1106 states. [2020-07-21 22:50:40,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1302 transitions. [2020-07-21 22:50:40,459 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1302 transitions. Word has length 155 [2020-07-21 22:50:40,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:50:40,460 INFO L479 AbstractCegarLoop]: Abstraction has 1106 states and 1302 transitions. [2020-07-21 22:50:40,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:50:40,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1302 transitions. [2020-07-21 22:50:40,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-07-21 22:50:40,470 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:50:40,470 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:50:40,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:50:40,685 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:50:40,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:50:40,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1111327453, now seen corresponding path program 1 times [2020-07-21 22:50:40,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:50:40,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036723450] [2020-07-21 22:50:40,687 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:50:40,793 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:50:40,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:50:40,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 22:50:40,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:50:40,861 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:50:40,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:50:41,049 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-07-21 22:50:41,087 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:41,088 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:41,089 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 22:50:41,089 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:41,090 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:41,091 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 22:50:41,091 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:41,190 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:50:41,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036723450] [2020-07-21 22:50:41,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:50:41,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:50:41,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7568649] [2020-07-21 22:50:41,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:50:41,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:50:41,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:50:41,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:50:41,192 INFO L87 Difference]: Start difference. First operand 1106 states and 1302 transitions. Second operand 7 states. [2020-07-21 22:50:42,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:50:42,415 INFO L93 Difference]: Finished difference Result 3270 states and 3951 transitions. [2020-07-21 22:50:42,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 22:50:42,416 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 185 [2020-07-21 22:50:42,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:50:42,432 INFO L225 Difference]: With dead ends: 3270 [2020-07-21 22:50:42,433 INFO L226 Difference]: Without dead ends: 2230 [2020-07-21 22:50:42,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 365 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-07-21 22:50:42,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2230 states. [2020-07-21 22:50:42,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2230 to 2081. [2020-07-21 22:50:42,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2081 states. [2020-07-21 22:50:42,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2081 states to 2081 states and 2367 transitions. [2020-07-21 22:50:42,530 INFO L78 Accepts]: Start accepts. Automaton has 2081 states and 2367 transitions. Word has length 185 [2020-07-21 22:50:42,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:50:42,531 INFO L479 AbstractCegarLoop]: Abstraction has 2081 states and 2367 transitions. [2020-07-21 22:50:42,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:50:42,531 INFO L276 IsEmpty]: Start isEmpty. Operand 2081 states and 2367 transitions. [2020-07-21 22:50:42,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-07-21 22:50:42,539 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:50:42,539 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:50:42,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:50:42,754 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:50:42,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:50:42,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1075881128, now seen corresponding path program 1 times [2020-07-21 22:50:42,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:50:42,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236912885] [2020-07-21 22:50:42,755 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:50:42,889 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:50:42,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:50:42,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-21 22:50:42,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:50:42,914 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 6, 1] term [2020-07-21 22:50:42,914 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:50:42,979 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 76 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-07-21 22:50:42,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:50:43,242 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 41 [2020-07-21 22:50:43,304 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:50:43,305 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:43,306 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:50:43,306 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:50:43,307 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:50:43,307 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:43,309 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 22:50:43,309 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:43,310 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:43,310 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:43,311 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:43,333 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:50:43,384 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:43,385 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:50:43,554 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 78 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-21 22:50:43,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236912885] [2020-07-21 22:50:43,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:50:43,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 8 [2020-07-21 22:50:43,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987628641] [2020-07-21 22:50:43,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 22:50:43,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:50:43,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 22:50:43,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-07-21 22:50:43,560 INFO L87 Difference]: Start difference. First operand 2081 states and 2367 transitions. Second operand 8 states. [2020-07-21 22:50:44,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:50:44,528 INFO L93 Difference]: Finished difference Result 5085 states and 5938 transitions. [2020-07-21 22:50:44,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 22:50:44,533 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 202 [2020-07-21 22:50:44,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:50:44,549 INFO L225 Difference]: With dead ends: 5085 [2020-07-21 22:50:44,550 INFO L226 Difference]: Without dead ends: 2931 [2020-07-21 22:50:44,556 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 397 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-07-21 22:50:44,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2931 states. [2020-07-21 22:50:44,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2931 to 2641. [2020-07-21 22:50:44,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2641 states. [2020-07-21 22:50:44,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2641 states to 2641 states and 3030 transitions. [2020-07-21 22:50:44,644 INFO L78 Accepts]: Start accepts. Automaton has 2641 states and 3030 transitions. Word has length 202 [2020-07-21 22:50:44,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:50:44,645 INFO L479 AbstractCegarLoop]: Abstraction has 2641 states and 3030 transitions. [2020-07-21 22:50:44,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 22:50:44,645 INFO L276 IsEmpty]: Start isEmpty. Operand 2641 states and 3030 transitions. [2020-07-21 22:50:44,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-07-21 22:50:44,655 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:50:44,656 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:50:44,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:50:44,871 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:50:44,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:50:44,872 INFO L82 PathProgramCache]: Analyzing trace with hash -307432494, now seen corresponding path program 1 times [2020-07-21 22:50:44,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:50:44,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854088646] [2020-07-21 22:50:44,873 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:50:45,037 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:50:45,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:50:45,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:50:45,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:50:45,104 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-07-21 22:50:45,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:50:45,207 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 141 proven. 15 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-07-21 22:50:45,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854088646] [2020-07-21 22:50:45,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:50:45,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:50:45,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995495544] [2020-07-21 22:50:45,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:50:45,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:50:45,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:50:45,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:50:45,211 INFO L87 Difference]: Start difference. First operand 2641 states and 3030 transitions. Second operand 7 states. [2020-07-21 22:50:46,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:50:46,361 INFO L93 Difference]: Finished difference Result 5633 states and 6520 transitions. [2020-07-21 22:50:46,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 22:50:46,361 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 236 [2020-07-21 22:50:46,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:50:46,376 INFO L225 Difference]: With dead ends: 5633 [2020-07-21 22:50:46,376 INFO L226 Difference]: Without dead ends: 3058 [2020-07-21 22:50:46,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 469 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-07-21 22:50:46,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3058 states. [2020-07-21 22:50:46,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3058 to 2099. [2020-07-21 22:50:46,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2099 states. [2020-07-21 22:50:46,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2099 states to 2099 states and 2372 transitions. [2020-07-21 22:50:46,445 INFO L78 Accepts]: Start accepts. Automaton has 2099 states and 2372 transitions. Word has length 236 [2020-07-21 22:50:46,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:50:46,446 INFO L479 AbstractCegarLoop]: Abstraction has 2099 states and 2372 transitions. [2020-07-21 22:50:46,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:50:46,446 INFO L276 IsEmpty]: Start isEmpty. Operand 2099 states and 2372 transitions. [2020-07-21 22:50:46,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-07-21 22:50:46,453 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:50:46,453 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:50:46,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:50:46,667 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:50:46,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:50:46,667 INFO L82 PathProgramCache]: Analyzing trace with hash -707251138, now seen corresponding path program 1 times [2020-07-21 22:50:46,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:50:46,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947808502] [2020-07-21 22:50:46,668 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:50:46,806 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:50:46,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:50:46,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 22:50:46,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:50:46,838 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 6, 1] term [2020-07-21 22:50:46,838 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:50:46,896 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-07-21 22:50:46,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:50:47,124 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 40 [2020-07-21 22:50:47,181 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 22:50:47,182 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:50:47,183 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:50:47,183 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:47,184 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:47,185 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:47,186 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 2, 2, 2, 2, 2, 1] term [2020-07-21 22:50:47,186 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:47,187 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 22:50:47,188 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:47,188 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 3, 1] term [2020-07-21 22:50:47,189 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:47,189 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:47,190 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 22:50:47,190 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 22:50:47,191 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 3, 1] term [2020-07-21 22:50:47,191 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:47,191 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:47,192 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 22:50:47,226 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:50:47,339 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-07-21 22:50:47,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1947808502] [2020-07-21 22:50:47,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:50:47,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:50:47,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058237785] [2020-07-21 22:50:47,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:50:47,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:50:47,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:50:47,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:50:47,342 INFO L87 Difference]: Start difference. First operand 2099 states and 2372 transitions. Second operand 7 states. [2020-07-21 22:50:48,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:50:48,531 INFO L93 Difference]: Finished difference Result 5109 states and 5823 transitions. [2020-07-21 22:50:48,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 22:50:48,532 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 258 [2020-07-21 22:50:48,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:50:48,547 INFO L225 Difference]: With dead ends: 5109 [2020-07-21 22:50:48,547 INFO L226 Difference]: Without dead ends: 3076 [2020-07-21 22:50:48,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 514 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-07-21 22:50:48,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3076 states. [2020-07-21 22:50:48,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3076 to 3070. [2020-07-21 22:50:48,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3070 states. [2020-07-21 22:50:48,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3070 states to 3070 states and 3452 transitions. [2020-07-21 22:50:48,632 INFO L78 Accepts]: Start accepts. Automaton has 3070 states and 3452 transitions. Word has length 258 [2020-07-21 22:50:48,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:50:48,633 INFO L479 AbstractCegarLoop]: Abstraction has 3070 states and 3452 transitions. [2020-07-21 22:50:48,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:50:48,634 INFO L276 IsEmpty]: Start isEmpty. Operand 3070 states and 3452 transitions. [2020-07-21 22:50:48,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-07-21 22:50:48,647 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:50:48,648 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:50:48,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:50:48,862 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:50:48,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:50:48,862 INFO L82 PathProgramCache]: Analyzing trace with hash -308818461, now seen corresponding path program 1 times [2020-07-21 22:50:48,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:50:48,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675125980] [2020-07-21 22:50:48,863 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:50:49,046 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:50:49,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:50:49,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:50:49,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:50:49,121 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 22:50:49,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:50:49,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675125980] [2020-07-21 22:50:49,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:50:49,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 22:50:49,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052883287] [2020-07-21 22:50:49,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 22:50:49,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:50:49,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 22:50:49,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:50:49,125 INFO L87 Difference]: Start difference. First operand 3070 states and 3452 transitions. Second operand 3 states. [2020-07-21 22:50:49,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:50:49,688 INFO L93 Difference]: Finished difference Result 4954 states and 5607 transitions. [2020-07-21 22:50:49,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 22:50:49,689 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 271 [2020-07-21 22:50:49,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:50:49,690 INFO L225 Difference]: With dead ends: 4954 [2020-07-21 22:50:49,690 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 22:50:49,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 269 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 22:50:49,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 22:50:49,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 22:50:49,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 22:50:49,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 22:50:49,705 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 271 [2020-07-21 22:50:49,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:50:49,706 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 22:50:49,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 22:50:49,706 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 22:50:49,706 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 22:50:49,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:50:49,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 22:50:50,337 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 127 [2020-07-21 22:50:50,444 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 117 [2020-07-21 22:50:51,592 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 188 DAG size of output: 84 [2020-07-21 22:50:52,112 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 44 [2020-07-21 22:50:52,550 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 44 [2020-07-21 22:50:52,554 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 22:50:52,555 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a16~0 |old(~a16~0)|) (= ~a7~0 |old(~a7~0)|) (= ~a17~0 |old(~a17~0)|) (<= |old(~a16~0)| ~a16~0) (<= |old(~a8~0)| ~a8~0) (= ~a20~0 |old(~a20~0)|) (= ~a21~0 |old(~a21~0)|)) [2020-07-21 22:50:52,555 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 22:50:52,555 INFO L268 CegarLoopResult]: For program point L333(lines 333 390) no Hoare annotation was computed. [2020-07-21 22:50:52,555 INFO L268 CegarLoopResult]: For program point L102(lines 102 390) no Hoare annotation was computed. [2020-07-21 22:50:52,556 INFO L268 CegarLoopResult]: For program point L565-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,556 INFO L268 CegarLoopResult]: For program point L532-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,556 INFO L268 CegarLoopResult]: For program point L499-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,556 INFO L268 CegarLoopResult]: For program point L466-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,556 INFO L268 CegarLoopResult]: For program point L433-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,556 INFO L268 CegarLoopResult]: For program point L400-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,557 INFO L268 CegarLoopResult]: For program point L268(lines 268 390) no Hoare annotation was computed. [2020-07-21 22:50:52,557 INFO L268 CegarLoopResult]: For program point L136(lines 136 390) no Hoare annotation was computed. [2020-07-21 22:50:52,557 INFO L268 CegarLoopResult]: For program point L566(line 566) no Hoare annotation was computed. [2020-07-21 22:50:52,557 INFO L268 CegarLoopResult]: For program point L533(line 533) no Hoare annotation was computed. [2020-07-21 22:50:52,557 INFO L268 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2020-07-21 22:50:52,557 INFO L268 CegarLoopResult]: For program point L467(line 467) no Hoare annotation was computed. [2020-07-21 22:50:52,557 INFO L268 CegarLoopResult]: For program point L434(line 434) no Hoare annotation was computed. [2020-07-21 22:50:52,557 INFO L268 CegarLoopResult]: For program point L401(line 401) no Hoare annotation was computed. [2020-07-21 22:50:52,558 INFO L268 CegarLoopResult]: For program point L203(lines 203 390) no Hoare annotation was computed. [2020-07-21 22:50:52,558 INFO L268 CegarLoopResult]: For program point L72(lines 72 390) no Hoare annotation was computed. [2020-07-21 22:50:52,558 INFO L268 CegarLoopResult]: For program point L568-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,558 INFO L268 CegarLoopResult]: For program point L535-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,558 INFO L268 CegarLoopResult]: For program point L502-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,558 INFO L268 CegarLoopResult]: For program point L469-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,558 INFO L268 CegarLoopResult]: For program point L436-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,558 INFO L268 CegarLoopResult]: For program point L403-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,559 INFO L268 CegarLoopResult]: For program point L337(lines 337 390) no Hoare annotation was computed. [2020-07-21 22:50:52,559 INFO L268 CegarLoopResult]: For program point L238(lines 238 390) no Hoare annotation was computed. [2020-07-21 22:50:52,559 INFO L268 CegarLoopResult]: For program point L569(line 569) no Hoare annotation was computed. [2020-07-21 22:50:52,559 INFO L268 CegarLoopResult]: For program point L536(line 536) no Hoare annotation was computed. [2020-07-21 22:50:52,559 INFO L268 CegarLoopResult]: For program point L503(line 503) no Hoare annotation was computed. [2020-07-21 22:50:52,559 INFO L268 CegarLoopResult]: For program point L470(line 470) no Hoare annotation was computed. [2020-07-21 22:50:52,559 INFO L268 CegarLoopResult]: For program point L437(line 437) no Hoare annotation was computed. [2020-07-21 22:50:52,559 INFO L268 CegarLoopResult]: For program point L404(line 404) no Hoare annotation was computed. [2020-07-21 22:50:52,560 INFO L268 CegarLoopResult]: For program point L173(lines 173 390) no Hoare annotation was computed. [2020-07-21 22:50:52,560 INFO L268 CegarLoopResult]: For program point L140(lines 140 390) no Hoare annotation was computed. [2020-07-21 22:50:52,560 INFO L268 CegarLoopResult]: For program point L372(lines 372 390) no Hoare annotation was computed. [2020-07-21 22:50:52,560 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 545) no Hoare annotation was computed. [2020-07-21 22:50:52,560 INFO L268 CegarLoopResult]: For program point L306(lines 306 390) no Hoare annotation was computed. [2020-07-21 22:50:52,560 INFO L268 CegarLoopResult]: For program point L273(lines 273 390) no Hoare annotation was computed. [2020-07-21 22:50:52,560 INFO L268 CegarLoopResult]: For program point L108(lines 108 390) no Hoare annotation was computed. [2020-07-21 22:50:52,560 INFO L268 CegarLoopResult]: For program point L571-1(lines 571 573) no Hoare annotation was computed. [2020-07-21 22:50:52,560 INFO L268 CegarLoopResult]: For program point L538-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,560 INFO L268 CegarLoopResult]: For program point L505-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,561 INFO L268 CegarLoopResult]: For program point L472-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,561 INFO L268 CegarLoopResult]: For program point L439-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,561 INFO L268 CegarLoopResult]: For program point L406-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,561 INFO L268 CegarLoopResult]: For program point L208(lines 208 390) no Hoare annotation was computed. [2020-07-21 22:50:52,561 INFO L268 CegarLoopResult]: For program point L43(lines 43 390) no Hoare annotation was computed. [2020-07-21 22:50:52,561 INFO L268 CegarLoopResult]: For program point L572(line 572) no Hoare annotation was computed. [2020-07-21 22:50:52,561 INFO L268 CegarLoopResult]: For program point L539(line 539) no Hoare annotation was computed. [2020-07-21 22:50:52,561 INFO L268 CegarLoopResult]: For program point L506(line 506) no Hoare annotation was computed. [2020-07-21 22:50:52,562 INFO L268 CegarLoopResult]: For program point L473(line 473) no Hoare annotation was computed. [2020-07-21 22:50:52,562 INFO L268 CegarLoopResult]: For program point L440(line 440) no Hoare annotation was computed. [2020-07-21 22:50:52,562 INFO L268 CegarLoopResult]: For program point L407(line 407) no Hoare annotation was computed. [2020-07-21 22:50:52,562 INFO L268 CegarLoopResult]: For program point L144(lines 144 390) no Hoare annotation was computed. [2020-07-21 22:50:52,562 INFO L268 CegarLoopResult]: For program point L541-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,562 INFO L268 CegarLoopResult]: For program point L508-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,562 INFO L268 CegarLoopResult]: For program point L475-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,562 INFO L268 CegarLoopResult]: For program point L442-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,563 INFO L268 CegarLoopResult]: For program point L409-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,563 INFO L268 CegarLoopResult]: For program point L178(lines 178 390) no Hoare annotation was computed. [2020-07-21 22:50:52,563 INFO L268 CegarLoopResult]: For program point L542(line 542) no Hoare annotation was computed. [2020-07-21 22:50:52,563 INFO L268 CegarLoopResult]: For program point L509(line 509) no Hoare annotation was computed. [2020-07-21 22:50:52,563 INFO L268 CegarLoopResult]: For program point L476(line 476) no Hoare annotation was computed. [2020-07-21 22:50:52,563 INFO L268 CegarLoopResult]: For program point L443(line 443) no Hoare annotation was computed. [2020-07-21 22:50:52,563 INFO L268 CegarLoopResult]: For program point L410(line 410) no Hoare annotation was computed. [2020-07-21 22:50:52,563 INFO L268 CegarLoopResult]: For program point L377(lines 377 390) no Hoare annotation was computed. [2020-07-21 22:50:52,563 INFO L268 CegarLoopResult]: For program point L278(lines 278 390) no Hoare annotation was computed. [2020-07-21 22:50:52,564 INFO L268 CegarLoopResult]: For program point L245(lines 245 390) no Hoare annotation was computed. [2020-07-21 22:50:52,564 INFO L268 CegarLoopResult]: For program point L80(lines 80 390) no Hoare annotation was computed. [2020-07-21 22:50:52,564 INFO L268 CegarLoopResult]: For program point L345(lines 345 390) no Hoare annotation was computed. [2020-07-21 22:50:52,564 INFO L268 CegarLoopResult]: For program point L312(lines 312 390) no Hoare annotation was computed. [2020-07-21 22:50:52,564 INFO L268 CegarLoopResult]: For program point L114(lines 114 390) no Hoare annotation was computed. [2020-07-21 22:50:52,564 INFO L268 CegarLoopResult]: For program point L544-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,564 INFO L268 CegarLoopResult]: For program point L511-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,564 INFO L268 CegarLoopResult]: For program point L478-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,564 INFO L268 CegarLoopResult]: For program point L445-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,565 INFO L268 CegarLoopResult]: For program point L412-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,565 INFO L268 CegarLoopResult]: For program point L214(lines 214 390) no Hoare annotation was computed. [2020-07-21 22:50:52,565 INFO L268 CegarLoopResult]: For program point L148(lines 148 390) no Hoare annotation was computed. [2020-07-21 22:50:52,565 INFO L268 CegarLoopResult]: For program point L49(lines 49 390) no Hoare annotation was computed. [2020-07-21 22:50:52,565 INFO L268 CegarLoopResult]: For program point L545(line 545) no Hoare annotation was computed. [2020-07-21 22:50:52,565 INFO L268 CegarLoopResult]: For program point L512(line 512) no Hoare annotation was computed. [2020-07-21 22:50:52,565 INFO L268 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2020-07-21 22:50:52,565 INFO L268 CegarLoopResult]: For program point L446(line 446) no Hoare annotation was computed. [2020-07-21 22:50:52,566 INFO L268 CegarLoopResult]: For program point L413(line 413) no Hoare annotation was computed. [2020-07-21 22:50:52,566 INFO L268 CegarLoopResult]: For program point L84(lines 84 390) no Hoare annotation was computed. [2020-07-21 22:50:52,566 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,566 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,566 INFO L268 CegarLoopResult]: For program point L547-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,566 INFO L268 CegarLoopResult]: For program point L514-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,566 INFO L268 CegarLoopResult]: For program point L481-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,566 INFO L268 CegarLoopResult]: For program point L448-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,567 INFO L268 CegarLoopResult]: For program point L382(lines 382 390) no Hoare annotation was computed. [2020-07-21 22:50:52,567 INFO L268 CegarLoopResult]: For program point L415-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,567 INFO L268 CegarLoopResult]: For program point L316(lines 316 390) no Hoare annotation was computed. [2020-07-21 22:50:52,567 INFO L268 CegarLoopResult]: For program point L250(lines 250 390) no Hoare annotation was computed. [2020-07-21 22:50:52,567 INFO L268 CegarLoopResult]: For program point L548(line 548) no Hoare annotation was computed. [2020-07-21 22:50:52,567 INFO L268 CegarLoopResult]: For program point L515(line 515) no Hoare annotation was computed. [2020-07-21 22:50:52,567 INFO L268 CegarLoopResult]: For program point L482(line 482) no Hoare annotation was computed. [2020-07-21 22:50:52,567 INFO L268 CegarLoopResult]: For program point L449(line 449) no Hoare annotation was computed. [2020-07-21 22:50:52,568 INFO L268 CegarLoopResult]: For program point L416(line 416) no Hoare annotation was computed. [2020-07-21 22:50:52,568 INFO L268 CegarLoopResult]: For program point L218(lines 218 390) no Hoare annotation was computed. [2020-07-21 22:50:52,568 INFO L268 CegarLoopResult]: For program point L152(lines 152 390) no Hoare annotation was computed. [2020-07-21 22:50:52,568 INFO L268 CegarLoopResult]: For program point L119(lines 119 390) no Hoare annotation was computed. [2020-07-21 22:50:52,568 INFO L268 CegarLoopResult]: For program point L318(lines 318 390) no Hoare annotation was computed. [2020-07-21 22:50:52,568 INFO L268 CegarLoopResult]: For program point L186(lines 186 390) no Hoare annotation was computed. [2020-07-21 22:50:52,568 INFO L268 CegarLoopResult]: For program point L54(lines 54 390) no Hoare annotation was computed. [2020-07-21 22:50:52,568 INFO L268 CegarLoopResult]: For program point L550-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,568 INFO L268 CegarLoopResult]: For program point L517-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,568 INFO L268 CegarLoopResult]: For program point L484-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,568 INFO L268 CegarLoopResult]: For program point L451-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,569 INFO L268 CegarLoopResult]: For program point L418-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,569 INFO L268 CegarLoopResult]: For program point L286(lines 286 390) no Hoare annotation was computed. [2020-07-21 22:50:52,569 INFO L268 CegarLoopResult]: For program point L551(line 551) no Hoare annotation was computed. [2020-07-21 22:50:52,569 INFO L268 CegarLoopResult]: For program point L518(line 518) no Hoare annotation was computed. [2020-07-21 22:50:52,569 INFO L268 CegarLoopResult]: For program point L485(line 485) no Hoare annotation was computed. [2020-07-21 22:50:52,569 INFO L268 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2020-07-21 22:50:52,569 INFO L268 CegarLoopResult]: For program point L419(line 419) no Hoare annotation was computed. [2020-07-21 22:50:52,569 INFO L268 CegarLoopResult]: For program point L353(lines 353 390) no Hoare annotation was computed. [2020-07-21 22:50:52,569 INFO L268 CegarLoopResult]: For program point L189(lines 189 390) no Hoare annotation was computed. [2020-07-21 22:50:52,570 INFO L268 CegarLoopResult]: For program point L553-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,570 INFO L268 CegarLoopResult]: For program point L520-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,570 INFO L268 CegarLoopResult]: For program point L487-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,570 INFO L268 CegarLoopResult]: For program point L454-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,570 INFO L268 CegarLoopResult]: For program point L421-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,570 INFO L268 CegarLoopResult]: For program point L355(lines 355 390) no Hoare annotation was computed. [2020-07-21 22:50:52,570 INFO L268 CegarLoopResult]: For program point L256(lines 256 390) no Hoare annotation was computed. [2020-07-21 22:50:52,570 INFO L268 CegarLoopResult]: For program point L223(lines 223 390) no Hoare annotation was computed. [2020-07-21 22:50:52,570 INFO L268 CegarLoopResult]: For program point L124(lines 124 390) no Hoare annotation was computed. [2020-07-21 22:50:52,570 INFO L268 CegarLoopResult]: For program point L554(line 554) no Hoare annotation was computed. [2020-07-21 22:50:52,570 INFO L268 CegarLoopResult]: For program point L521(line 521) no Hoare annotation was computed. [2020-07-21 22:50:52,571 INFO L268 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2020-07-21 22:50:52,571 INFO L268 CegarLoopResult]: For program point L455(line 455) no Hoare annotation was computed. [2020-07-21 22:50:52,571 INFO L268 CegarLoopResult]: For program point L422(line 422) no Hoare annotation was computed. [2020-07-21 22:50:52,571 INFO L268 CegarLoopResult]: For program point L92(lines 92 390) no Hoare annotation was computed. [2020-07-21 22:50:52,571 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 30 575) the Hoare annotation is: (let ((.cse10 (<= ~a16~0 |old(~a16~0)|)) (.cse11 (= ~a7~0 |old(~a7~0)|)) (.cse12 (= ~a17~0 |old(~a17~0)|)) (.cse13 (<= |old(~a16~0)| ~a16~0)) (.cse14 (<= |old(~a8~0)| ~a8~0)) (.cse15 (= ~a20~0 |old(~a20~0)|)) (.cse16 (= ~a21~0 |old(~a21~0)|))) (let ((.cse3 (not (= 15 |old(~a8~0)|))) (.cse5 (not (< 4 |old(~a16~0)|))) (.cse6 (not (= 1 |old(~a17~0)|))) (.cse7 (and (not (= 6 |calculate_output_#in~input|)) (not (= 1 |calculate_output_#in~input|)) (not (= 2 |calculate_output_#in~input|)) (not (= 4 |calculate_output_#in~input|)) (not (= 5 |calculate_output_#in~input|)) (not (= 3 |calculate_output_#in~input|)))) (.cse9 (= 15 ~a8~0)) (.cse0 (not (<= |old(~a7~0)| 0))) (.cse2 (not (= 8 ~a12~0))) (.cse1 (and .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16)) (.cse4 (not (<= |old(~a16~0)| 5))) (.cse8 (not (= 1 |old(~a21~0)|)))) (and (or .cse0 .cse1 (not (<= 6 |old(~a16~0)|)) .cse2) (or (not (= 1 |old(~a20~0)|)) .cse3 .cse0 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse2) (or .cse3 .cse0 .cse4 .cse5 (not (<= |old(~a20~0)| 0)) .cse6 .cse7 .cse8 .cse9 .cse2) (or (and .cse10 .cse11 .cse12 .cse13 .cse14 (= 1 ~a21~0) .cse15) .cse0 .cse8 .cse2) (or (not (<= |old(~a21~0)| 0)) .cse1) (or (not (= 1 |old(~a7~0)|)) .cse4 .cse8 (and .cse10 (= 1 ~a7~0) .cse15 .cse16))))) [2020-07-21 22:50:52,571 INFO L268 CegarLoopResult]: For program point L324(lines 324 390) no Hoare annotation was computed. [2020-07-21 22:50:52,571 INFO L268 CegarLoopResult]: For program point L556-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,572 INFO L268 CegarLoopResult]: For program point L523-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,572 INFO L268 CegarLoopResult]: For program point L490-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,572 INFO L268 CegarLoopResult]: For program point L457-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,572 INFO L268 CegarLoopResult]: For program point L391(lines 391 393) no Hoare annotation was computed. [2020-07-21 22:50:52,572 INFO L268 CegarLoopResult]: For program point L424-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,572 INFO L268 CegarLoopResult]: For program point L391-2(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,572 INFO L268 CegarLoopResult]: For program point L292(lines 292 390) no Hoare annotation was computed. [2020-07-21 22:50:52,572 INFO L268 CegarLoopResult]: For program point L160(lines 160 390) no Hoare annotation was computed. [2020-07-21 22:50:52,572 INFO L268 CegarLoopResult]: For program point L557(line 557) no Hoare annotation was computed. [2020-07-21 22:50:52,572 INFO L268 CegarLoopResult]: For program point L524(line 524) no Hoare annotation was computed. [2020-07-21 22:50:52,572 INFO L268 CegarLoopResult]: For program point L491(line 491) no Hoare annotation was computed. [2020-07-21 22:50:52,572 INFO L268 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2020-07-21 22:50:52,572 INFO L268 CegarLoopResult]: For program point L425(line 425) no Hoare annotation was computed. [2020-07-21 22:50:52,572 INFO L268 CegarLoopResult]: For program point L392(line 392) no Hoare annotation was computed. [2020-07-21 22:50:52,573 INFO L268 CegarLoopResult]: For program point L194(lines 194 390) no Hoare annotation was computed. [2020-07-21 22:50:52,573 INFO L268 CegarLoopResult]: For program point L62(lines 62 390) no Hoare annotation was computed. [2020-07-21 22:50:52,573 INFO L268 CegarLoopResult]: For program point L261(lines 261 390) no Hoare annotation was computed. [2020-07-21 22:50:52,573 INFO L268 CegarLoopResult]: For program point L129(lines 129 390) no Hoare annotation was computed. [2020-07-21 22:50:52,573 INFO L268 CegarLoopResult]: For program point L559-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,573 INFO L268 CegarLoopResult]: For program point L526-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,573 INFO L268 CegarLoopResult]: For program point L493-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,573 INFO L268 CegarLoopResult]: For program point L460-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,573 INFO L268 CegarLoopResult]: For program point L427-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,573 INFO L268 CegarLoopResult]: For program point L361(lines 361 390) no Hoare annotation was computed. [2020-07-21 22:50:52,573 INFO L268 CegarLoopResult]: For program point L394-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,573 INFO L268 CegarLoopResult]: For program point L97(lines 97 390) no Hoare annotation was computed. [2020-07-21 22:50:52,573 INFO L268 CegarLoopResult]: For program point L31(lines 31 390) no Hoare annotation was computed. [2020-07-21 22:50:52,573 INFO L268 CegarLoopResult]: For program point L560(line 560) no Hoare annotation was computed. [2020-07-21 22:50:52,574 INFO L268 CegarLoopResult]: For program point L527(line 527) no Hoare annotation was computed. [2020-07-21 22:50:52,574 INFO L268 CegarLoopResult]: For program point L494(line 494) no Hoare annotation was computed. [2020-07-21 22:50:52,574 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-21 22:50:52,574 INFO L268 CegarLoopResult]: For program point L428(line 428) no Hoare annotation was computed. [2020-07-21 22:50:52,574 INFO L268 CegarLoopResult]: For program point L395(line 395) no Hoare annotation was computed. [2020-07-21 22:50:52,574 INFO L268 CegarLoopResult]: For program point L329(lines 329 390) no Hoare annotation was computed. [2020-07-21 22:50:52,574 INFO L268 CegarLoopResult]: For program point L197(lines 197 390) no Hoare annotation was computed. [2020-07-21 22:50:52,574 INFO L268 CegarLoopResult]: For program point L65(lines 65 390) no Hoare annotation was computed. [2020-07-21 22:50:52,574 INFO L268 CegarLoopResult]: For program point L363(lines 363 390) no Hoare annotation was computed. [2020-07-21 22:50:52,574 INFO L268 CegarLoopResult]: For program point L231(lines 231 390) no Hoare annotation was computed. [2020-07-21 22:50:52,574 INFO L268 CegarLoopResult]: For program point L165(lines 165 390) no Hoare annotation was computed. [2020-07-21 22:50:52,574 INFO L268 CegarLoopResult]: For program point L562-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,574 INFO L268 CegarLoopResult]: For program point L529-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,574 INFO L268 CegarLoopResult]: For program point L496-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,574 INFO L268 CegarLoopResult]: For program point L463-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,575 INFO L268 CegarLoopResult]: For program point L430-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,575 INFO L268 CegarLoopResult]: For program point L397-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:52,575 INFO L268 CegarLoopResult]: For program point L265(lines 265 390) no Hoare annotation was computed. [2020-07-21 22:50:52,575 INFO L268 CegarLoopResult]: For program point L563(line 563) no Hoare annotation was computed. [2020-07-21 22:50:52,575 INFO L268 CegarLoopResult]: For program point L530(line 530) no Hoare annotation was computed. [2020-07-21 22:50:52,575 INFO L268 CegarLoopResult]: For program point L497(line 497) no Hoare annotation was computed. [2020-07-21 22:50:52,575 INFO L268 CegarLoopResult]: For program point L464(line 464) no Hoare annotation was computed. [2020-07-21 22:50:52,575 INFO L268 CegarLoopResult]: For program point L431(line 431) no Hoare annotation was computed. [2020-07-21 22:50:52,575 INFO L268 CegarLoopResult]: For program point L398(line 398) no Hoare annotation was computed. [2020-07-21 22:50:52,575 INFO L268 CegarLoopResult]: For program point L365(lines 365 390) no Hoare annotation was computed. [2020-07-21 22:50:52,575 INFO L268 CegarLoopResult]: For program point L299(lines 299 390) no Hoare annotation was computed. [2020-07-21 22:50:52,576 INFO L268 CegarLoopResult]: For program point L35(lines 35 390) no Hoare annotation was computed. [2020-07-21 22:50:52,576 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 22:50:52,576 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a7~0 0) (= 1 ~a17~0) (= 1 ~a21~0) (= 1 ~a20~0) (= 15 ~a8~0) (= 5 ~a16~0) (= 8 ~a12~0)) [2020-07-21 22:50:52,576 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 22:50:52,576 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 22:50:52,576 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 577 594) the Hoare annotation is: (or (not (= 1 |old(~a20~0)|)) (not (= 15 |old(~a8~0)|)) (and (= ~a7~0 |old(~a7~0)|) (= ~a17~0 |old(~a17~0)|) (= 1 ~a21~0) (= ~a20~0 |old(~a20~0)|) (= 15 ~a8~0) (= 5 ~a16~0)) (not (<= |old(~a7~0)| 0)) (not (<= |old(~a16~0)| 5)) (not (< 4 |old(~a16~0)|)) (not (= 1 |old(~a17~0)|)) (not (= 1 |old(~a21~0)|)) (not (= 8 ~a12~0))) [2020-07-21 22:50:52,576 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 577 594) no Hoare annotation was computed. [2020-07-21 22:50:52,577 INFO L264 CegarLoopResult]: At program point L591(line 591) the Hoare annotation is: (let ((.cse0 (<= ~a7~0 0)) (.cse1 (= 1 ~a21~0))) (or (and .cse0 .cse1) (and (<= 6 ~a16~0) .cse0) (not (= 1 |old(~a20~0)|)) (<= ~a21~0 0) (not (= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (not (<= |old(~a16~0)| 5)) (not (< 4 |old(~a16~0)|)) (not (= 1 |old(~a17~0)|)) (and (= 1 ~a7~0) (<= ~a16~0 5) .cse1) (not (= 1 |old(~a21~0)|)) (not (= 8 ~a12~0)))) [2020-07-21 22:50:52,577 INFO L268 CegarLoopResult]: For program point L591-1(line 591) no Hoare annotation was computed. [2020-07-21 22:50:52,577 INFO L268 CegarLoopResult]: For program point L588(line 588) no Hoare annotation was computed. [2020-07-21 22:50:52,577 INFO L264 CegarLoopResult]: At program point L583-2(lines 583 593) the Hoare annotation is: (let ((.cse0 (<= ~a7~0 0)) (.cse1 (= 1 ~a21~0))) (or (and .cse0 .cse1) (and (<= 6 ~a16~0) .cse0) (not (= 1 |old(~a20~0)|)) (<= ~a21~0 0) (not (= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (not (<= |old(~a16~0)| 5)) (not (< 4 |old(~a16~0)|)) (not (= 1 |old(~a17~0)|)) (and (= 1 ~a7~0) (<= ~a16~0 5) .cse1) (not (= 1 |old(~a21~0)|)) (not (= 8 ~a12~0)))) [2020-07-21 22:50:52,577 INFO L268 CegarLoopResult]: For program point L583-3(lines 577 594) no Hoare annotation was computed. [2020-07-21 22:50:52,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:50:52 BoogieIcfgContainer [2020-07-21 22:50:52,598 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 22:50:52,599 INFO L168 Benchmark]: Toolchain (without parser) took 29090.17 ms. Allocated memory was 141.0 MB in the beginning and 543.2 MB in the end (delta: 402.1 MB). Free memory was 104.2 MB in the beginning and 387.6 MB in the end (delta: -283.4 MB). Peak memory consumption was 388.4 MB. Max. memory is 7.1 GB. [2020-07-21 22:50:52,600 INFO L168 Benchmark]: CDTParser took 0.52 ms. Allocated memory is still 141.0 MB. Free memory was 124.1 MB in the beginning and 123.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 22:50:52,601 INFO L168 Benchmark]: CACSL2BoogieTranslator took 703.58 ms. Allocated memory was 141.0 MB in the beginning and 206.6 MB in the end (delta: 65.5 MB). Free memory was 103.8 MB in the beginning and 173.2 MB in the end (delta: -69.4 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. [2020-07-21 22:50:52,602 INFO L168 Benchmark]: Boogie Preprocessor took 124.45 ms. Allocated memory is still 206.6 MB. Free memory was 173.2 MB in the beginning and 167.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 7.1 GB. [2020-07-21 22:50:52,603 INFO L168 Benchmark]: RCFGBuilder took 1157.16 ms. Allocated memory was 206.6 MB in the beginning and 235.9 MB in the end (delta: 29.4 MB). Free memory was 167.8 MB in the beginning and 173.7 MB in the end (delta: -5.9 MB). Peak memory consumption was 77.4 MB. Max. memory is 7.1 GB. [2020-07-21 22:50:52,603 INFO L168 Benchmark]: TraceAbstraction took 27098.59 ms. Allocated memory was 235.9 MB in the beginning and 543.2 MB in the end (delta: 307.2 MB). Free memory was 173.7 MB in the beginning and 387.6 MB in the end (delta: -213.9 MB). Peak memory consumption was 363.0 MB. Max. memory is 7.1 GB. [2020-07-21 22:50:52,607 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 ms. Allocated memory is still 141.0 MB. Free memory was 124.1 MB in the beginning and 123.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 703.58 ms. Allocated memory was 141.0 MB in the beginning and 206.6 MB in the end (delta: 65.5 MB). Free memory was 103.8 MB in the beginning and 173.2 MB in the end (delta: -69.4 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.45 ms. Allocated memory is still 206.6 MB. Free memory was 173.2 MB in the beginning and 167.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1157.16 ms. Allocated memory was 206.6 MB in the beginning and 235.9 MB in the end (delta: 29.4 MB). Free memory was 167.8 MB in the beginning and 173.7 MB in the end (delta: -5.9 MB). Peak memory consumption was 77.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27098.59 ms. Allocated memory was 235.9 MB in the beginning and 543.2 MB in the end (delta: 307.2 MB). Free memory was 173.7 MB in the beginning and 387.6 MB in the end (delta: -213.9 MB). Peak memory consumption was 363.0 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: (((((((((((a7 <= 0 && 1 == a21) || (6 <= a16 && a7 <= 0)) || !(1 == \old(a20))) || a21 <= 0) || !(15 == \old(a8))) || !(\old(a7) <= 0)) || !(\old(a16) <= 5)) || !(4 < \old(a16))) || !(1 == \old(a17))) || ((1 == a7 && a16 <= 5) && 1 == a21)) || !(1 == \old(a21))) || !(8 == a12) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 24.3s, OverallIterations: 9, TraceHistogramMax: 5, AutomataDifference: 14.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 651 SDtfs, 4776 SDslu, 468 SDs, 0 SdLazy, 9146 SolverSat, 1196 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2940 GetRequests, 2823 SyntacticMatches, 9 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3070occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 1501 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 115 PreInvPairs, 149 NumberOfFragments, 463 HoareAnnotationTreeSize, 115 FomulaSimplifications, 2688 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 7 FomulaSimplificationsInter, 6486 FormulaSimplificationTreeSizeReductionInter, 2.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 6.3s InterpolantComputationTime, 1713 NumberOfCodeBlocks, 1130 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 2871 ConstructedInterpolants, 0 QuantifiedInterpolants, 3256271 SizeOfPredicates, 63 NumberOfNonLiveVariables, 3665 ConjunctsInSsa, 180 ConjunctsInUnsatCore, 15 InterpolantComputations, 3 PerfectInterpolantSequences, 1338/1390 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...