/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_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 22:50:56,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 22:50:56,867 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 22:50:56,885 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 22:50:56,885 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 22:50:56,887 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 22:50:56,889 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 22:50:56,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 22:50:56,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 22:50:56,903 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 22:50:56,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 22:50:56,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 22:50:56,908 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 22:50:56,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 22:50:56,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 22:50:56,911 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 22:50:56,914 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 22:50:56,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 22:50:56,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 22:50:56,921 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 22:50:56,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 22:50:56,926 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 22:50:56,927 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 22:50:56,928 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 22:50:56,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 22:50:56,950 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 22:50:56,971 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 22:50:56,971 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 22:50:56,973 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 22:50:56,974 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 22:50:56,974 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 22:50:56,974 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 22:50:56,975 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 22:50:56,975 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 22:50:56,975 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 22:50:56,975 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 22:50:56,976 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 22:50:56,977 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 22:50:56,977 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 22:50:56,977 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 22:50:56,977 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 22:50:56,978 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 22:50:56,978 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 22:50:56,978 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 22:50:56,978 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 22:50:56,978 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 22:50:56,979 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 22:50:56,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 22:50:56,979 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 22:50:56,979 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 22:50:56,979 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 22:50:56,980 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 22:50:56,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:50:56,980 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 22:50:56,980 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 22:50:56,980 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 22:50:57,256 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 22:50:57,269 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 22:50:57,272 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 22:50:57,274 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 22:50:57,274 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 22:50:57,275 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label26.c [2020-07-21 22:50:57,335 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3a2927f3/ac37548348fe4a3998a197485c26cd12/FLAGa6dc50b7a [2020-07-21 22:50:57,890 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 22:50:57,891 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label26.c [2020-07-21 22:50:57,906 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3a2927f3/ac37548348fe4a3998a197485c26cd12/FLAGa6dc50b7a [2020-07-21 22:50:58,166 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3a2927f3/ac37548348fe4a3998a197485c26cd12 [2020-07-21 22:50:58,176 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 22:50:58,179 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 22:50:58,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 22:50:58,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 22:50:58,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 22:50:58,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:50:58" (1/1) ... [2020-07-21 22:50:58,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ece8b69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:50:58, skipping insertion in model container [2020-07-21 22:50:58,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:50:58" (1/1) ... [2020-07-21 22:50:58,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 22:50:58,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 22:50:58,701 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:50:58,706 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 22:50:58,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:50:58,963 INFO L208 MainTranslator]: Completed translation [2020-07-21 22:50:58,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:50:58 WrapperNode [2020-07-21 22:50:58,964 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 22:50:58,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 22:50:58,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 22:50:58,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 22:50:58,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:50:58" (1/1) ... [2020-07-21 22:50:58,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:50:58" (1/1) ... [2020-07-21 22:50:58,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:50:58" (1/1) ... [2020-07-21 22:50:58,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:50:58" (1/1) ... [2020-07-21 22:50:59,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:50:58" (1/1) ... [2020-07-21 22:50:59,057 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:50:58" (1/1) ... [2020-07-21 22:50:59,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:50:58" (1/1) ... [2020-07-21 22:50:59,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 22:50:59,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 22:50:59,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 22:50:59,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 22:50:59,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:50:58" (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 22:50:59,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 22:50:59,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 22:50:59,134 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 22:50:59,134 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 22:50:59,134 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 22:50:59,135 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 22:50:59,135 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 22:50:59,135 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 22:50:59,135 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 22:50:59,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 22:50:59,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 22:51:00,263 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 22:51:00,263 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 22:51:00,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:51:00 BoogieIcfgContainer [2020-07-21 22:51:00,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 22:51:00,271 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 22:51:00,271 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 22:51:00,275 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 22:51:00,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:50:58" (1/3) ... [2020-07-21 22:51:00,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d0e505 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:51:00, skipping insertion in model container [2020-07-21 22:51:00,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:50:58" (2/3) ... [2020-07-21 22:51:00,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d0e505 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:51:00, skipping insertion in model container [2020-07-21 22:51:00,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:51:00" (3/3) ... [2020-07-21 22:51:00,279 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label26.c [2020-07-21 22:51:00,292 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 22:51:00,302 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 22:51:00,320 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 22:51:00,347 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 22:51:00,348 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 22:51:00,348 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 22:51:00,348 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 22:51:00,349 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 22:51:00,349 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 22:51:00,349 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 22:51:00,349 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 22:51:00,373 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-07-21 22:51:00,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-07-21 22:51:00,385 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:51:00,386 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] [2020-07-21 22:51:00,387 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:51:00,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:51:00,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1414431897, now seen corresponding path program 1 times [2020-07-21 22:51:00,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:51:00,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344488078] [2020-07-21 22:51:00,406 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 22:51:00,606 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:51:00,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:51:00,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 68 conjunts are in the unsatisfiable core [2020-07-21 22:51:00,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:51:00,933 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 31 [2020-07-21 22:51:01,066 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 29 [2020-07-21 22:51:01,448 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 22:51:01,448 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:51:01,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344488078] [2020-07-21 22:51:01,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:51:01,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-21 22:51:01,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017504809] [2020-07-21 22:51:01,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-21 22:51:01,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:51:01,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-21 22:51:01,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-07-21 22:51:01,474 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 11 states. [2020-07-21 22:51:03,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:51:03,174 INFO L93 Difference]: Finished difference Result 472 states and 791 transitions. [2020-07-21 22:51:03,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 22:51:03,181 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 109 [2020-07-21 22:51:03,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:51:03,194 INFO L225 Difference]: With dead ends: 472 [2020-07-21 22:51:03,194 INFO L226 Difference]: Without dead ends: 203 [2020-07-21 22:51:03,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=102, Invalid=170, Unknown=0, NotChecked=0, Total=272 [2020-07-21 22:51:03,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-07-21 22:51:03,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-07-21 22:51:03,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-07-21 22:51:03,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 275 transitions. [2020-07-21 22:51:03,260 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 275 transitions. Word has length 109 [2020-07-21 22:51:03,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:51:03,261 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 275 transitions. [2020-07-21 22:51:03,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-21 22:51:03,261 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 275 transitions. [2020-07-21 22:51:03,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-07-21 22:51:03,267 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:51:03,268 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] [2020-07-21 22:51:03,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:03,484 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:51:03,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:51:03,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1836472428, now seen corresponding path program 1 times [2020-07-21 22:51:03,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:51:03,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1039971099] [2020-07-21 22:51:03,487 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 22:51:03,594 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:51:03,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:51:03,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 48 conjunts are in the unsatisfiable core [2020-07-21 22:51:03,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:51:03,915 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 31 [2020-07-21 22:51:04,253 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:51:04,257 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2020-07-21 22:51:04,257 INFO L501 QuantifierPusher]: Distributing 1 conjuncts over 2 disjuncts [2020-07-21 22:51:04,347 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 22:51:04,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:51:05,098 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-07-21 22:51:05,234 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-07-21 22:51:05,380 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-07-21 22:51:05,524 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-07-21 22:51:05,529 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 7 conjuncts [2020-07-21 22:51:05,532 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 6 conjuncts [2020-07-21 22:51:05,533 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 5 conjuncts [2020-07-21 22:51:05,535 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 4 conjuncts [2020-07-21 22:51:05,536 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:51:05,537 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 2 conjuncts [2020-07-21 22:51:05,541 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 5 conjuncts [2020-07-21 22:51:05,543 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 4 conjuncts [2020-07-21 22:51:05,544 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:51:05,551 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:51:05,554 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:51:05,556 INFO L501 QuantifierPusher]: Distributing 14 disjuncts over 3 conjuncts [2020-07-21 22:51:05,557 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 22:51:05,558 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 22:51:05,559 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:51:05,562 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:51:05,563 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:51:05,565 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:51:05,566 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:51:05,568 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:51:05,569 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:51:05,574 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 22:51:05,575 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:51:05,578 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 22:51:05,578 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:51:06,154 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 37 [2020-07-21 22:51:06,159 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 8, 6, 7, 1] term [2020-07-21 22:51:06,159 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 22:51:06,226 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 22:51:06,227 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:06,285 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:06,307 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:06,507 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 22:51:06,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1039971099] [2020-07-21 22:51:06,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:51:06,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 25 [2020-07-21 22:51:06,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918139760] [2020-07-21 22:51:06,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-21 22:51:06,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:51:06,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-21 22:51:06,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2020-07-21 22:51:06,512 INFO L87 Difference]: Start difference. First operand 203 states and 275 transitions. Second operand 25 states. [2020-07-21 22:51:07,493 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-07-21 22:51:08,037 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2020-07-21 22:51:08,365 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-07-21 22:51:08,817 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 22:51:09,026 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-07-21 22:51:09,478 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-07-21 22:51:12,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:51:12,007 INFO L93 Difference]: Finished difference Result 588 states and 878 transitions. [2020-07-21 22:51:12,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-21 22:51:12,009 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 117 [2020-07-21 22:51:12,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:51:12,015 INFO L225 Difference]: With dead ends: 588 [2020-07-21 22:51:12,015 INFO L226 Difference]: Without dead ends: 451 [2020-07-21 22:51:12,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 206 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=551, Invalid=1611, Unknown=0, NotChecked=0, Total=2162 [2020-07-21 22:51:12,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-07-21 22:51:12,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 417. [2020-07-21 22:51:12,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-07-21 22:51:12,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 548 transitions. [2020-07-21 22:51:12,063 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 548 transitions. Word has length 117 [2020-07-21 22:51:12,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:51:12,063 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 548 transitions. [2020-07-21 22:51:12,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-21 22:51:12,064 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 548 transitions. [2020-07-21 22:51:12,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-07-21 22:51:12,067 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:51:12,068 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] [2020-07-21 22:51:12,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:12,282 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:51:12,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:51:12,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1252784430, now seen corresponding path program 1 times [2020-07-21 22:51:12,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:51:12,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482623349] [2020-07-21 22:51:12,284 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 22:51:12,415 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:51:12,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:51:12,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:51:12,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:51:12,446 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 22:51:12,446 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:51:12,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482623349] [2020-07-21 22:51:12,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:51:12,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 22:51:12,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059868438] [2020-07-21 22:51:12,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 22:51:12,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:51:12,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 22:51:12,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:51:12,449 INFO L87 Difference]: Start difference. First operand 417 states and 548 transitions. Second operand 3 states. [2020-07-21 22:51:13,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:51:13,010 INFO L93 Difference]: Finished difference Result 1044 states and 1434 transitions. [2020-07-21 22:51:13,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 22:51:13,010 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 120 [2020-07-21 22:51:13,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:51:13,016 INFO L225 Difference]: With dead ends: 1044 [2020-07-21 22:51:13,016 INFO L226 Difference]: Without dead ends: 693 [2020-07-21 22:51:13,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 118 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 22:51:13,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2020-07-21 22:51:13,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 693. [2020-07-21 22:51:13,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-07-21 22:51:13,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 869 transitions. [2020-07-21 22:51:13,057 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 869 transitions. Word has length 120 [2020-07-21 22:51:13,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:51:13,057 INFO L479 AbstractCegarLoop]: Abstraction has 693 states and 869 transitions. [2020-07-21 22:51:13,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 22:51:13,058 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 869 transitions. [2020-07-21 22:51:13,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-07-21 22:51:13,064 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:51:13,065 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:51:13,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:13,278 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:51:13,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:51:13,279 INFO L82 PathProgramCache]: Analyzing trace with hash 696610123, now seen corresponding path program 1 times [2020-07-21 22:51:13,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:51:13,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627940215] [2020-07-21 22:51:13,280 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 22:51:13,388 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 22:51:13,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:51:13,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:51:13,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:51:13,469 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:51:13,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:51:13,538 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:51:13,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [627940215] [2020-07-21 22:51:13,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:51:13,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:51:13,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728575579] [2020-07-21 22:51:13,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:51:13,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:51:13,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:51:13,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:51:13,541 INFO L87 Difference]: Start difference. First operand 693 states and 869 transitions. Second operand 7 states. [2020-07-21 22:51:14,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:51:14,877 INFO L93 Difference]: Finished difference Result 2372 states and 3098 transitions. [2020-07-21 22:51:14,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 22:51:14,877 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2020-07-21 22:51:14,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:51:14,886 INFO L225 Difference]: With dead ends: 2372 [2020-07-21 22:51:14,887 INFO L226 Difference]: Without dead ends: 1745 [2020-07-21 22:51:14,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 275 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-07-21 22:51:14,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1745 states. [2020-07-21 22:51:14,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1745 to 1545. [2020-07-21 22:51:14,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1545 states. [2020-07-21 22:51:14,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 1983 transitions. [2020-07-21 22:51:14,946 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 1983 transitions. Word has length 140 [2020-07-21 22:51:14,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:51:14,946 INFO L479 AbstractCegarLoop]: Abstraction has 1545 states and 1983 transitions. [2020-07-21 22:51:14,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:51:14,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 1983 transitions. [2020-07-21 22:51:14,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-07-21 22:51:14,952 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:51:14,953 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:51:15,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:15,166 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:51:15,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:51:15,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1420721245, now seen corresponding path program 1 times [2020-07-21 22:51:15,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:51:15,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176886095] [2020-07-21 22:51:15,168 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 22:51:15,313 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:51:15,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:51:15,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 22:51:15,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:51:15,361 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:51:15,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:51:15,423 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:51:15,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176886095] [2020-07-21 22:51:15,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:51:15,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 22:51:15,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621629867] [2020-07-21 22:51:15,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 22:51:15,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:51:15,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 22:51:15,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 22:51:15,434 INFO L87 Difference]: Start difference. First operand 1545 states and 1983 transitions. Second operand 6 states. [2020-07-21 22:51:16,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:51:16,147 INFO L93 Difference]: Finished difference Result 3223 states and 4220 transitions. [2020-07-21 22:51:16,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 22:51:16,148 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2020-07-21 22:51:16,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:51:16,159 INFO L225 Difference]: With dead ends: 3223 [2020-07-21 22:51:16,159 INFO L226 Difference]: Without dead ends: 1744 [2020-07-21 22:51:16,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-07-21 22:51:16,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2020-07-21 22:51:16,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 1565. [2020-07-21 22:51:16,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-07-21 22:51:16,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 1928 transitions. [2020-07-21 22:51:16,229 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 1928 transitions. Word has length 145 [2020-07-21 22:51:16,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:51:16,231 INFO L479 AbstractCegarLoop]: Abstraction has 1565 states and 1928 transitions. [2020-07-21 22:51:16,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 22:51:16,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 1928 transitions. [2020-07-21 22:51:16,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-07-21 22:51:16,236 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:51:16,237 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:51:16,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:16,451 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:51:16,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:51:16,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1766643116, now seen corresponding path program 1 times [2020-07-21 22:51:16,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:51:16,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005647213] [2020-07-21 22:51:16,454 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 22:51:16,541 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 22:51:16,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:51:16,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 22:51:16,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:51:16,597 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-07-21 22:51:16,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:51:16,847 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 40 [2020-07-21 22:51:16,894 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:16,895 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:16,896 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:16,897 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:16,898 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 22:51:16,898 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:16,899 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[7, 2, 1] term [2020-07-21 22:51:16,900 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:16,996 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-07-21 22:51:16,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005647213] [2020-07-21 22:51:16,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:51:16,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:51:16,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445188516] [2020-07-21 22:51:16,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:51:16,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:51:16,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:51:16,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:51:16,999 INFO L87 Difference]: Start difference. First operand 1565 states and 1928 transitions. Second operand 7 states. [2020-07-21 22:51:18,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:51:18,178 INFO L93 Difference]: Finished difference Result 3804 states and 4698 transitions. [2020-07-21 22:51:18,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 22:51:18,179 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 155 [2020-07-21 22:51:18,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:51:18,189 INFO L225 Difference]: With dead ends: 3804 [2020-07-21 22:51:18,189 INFO L226 Difference]: Without dead ends: 2027 [2020-07-21 22:51:18,193 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 22:51:18,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2027 states. [2020-07-21 22:51:18,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2027 to 1690. [2020-07-21 22:51:18,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1690 states. [2020-07-21 22:51:18,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 1959 transitions. [2020-07-21 22:51:18,252 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 1959 transitions. Word has length 155 [2020-07-21 22:51:18,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:51:18,253 INFO L479 AbstractCegarLoop]: Abstraction has 1690 states and 1959 transitions. [2020-07-21 22:51:18,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:51:18,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 1959 transitions. [2020-07-21 22:51:18,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-07-21 22:51:18,260 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:51:18,260 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:51:18,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:18,476 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:51:18,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:51:18,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1932641360, now seen corresponding path program 1 times [2020-07-21 22:51:18,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:51:18,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066679557] [2020-07-21 22:51:18,477 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 22:51:18,646 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:51:18,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:51:18,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 22:51:18,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:51:18,719 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-07-21 22:51:18,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:51:18,914 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 40 [2020-07-21 22:51:18,965 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:18,966 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:18,967 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 22:51:18,967 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:18,968 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:51:18,969 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:51:18,969 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:18,970 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 22:51:18,970 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:18,971 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-07-21 22:51:18,971 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:19,091 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 84 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-07-21 22:51:19,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066679557] [2020-07-21 22:51:19,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:51:19,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:51:19,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583709260] [2020-07-21 22:51:19,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:51:19,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:51:19,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:51:19,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:51:19,093 INFO L87 Difference]: Start difference. First operand 1690 states and 1959 transitions. Second operand 7 states. [2020-07-21 22:51:20,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:51:20,213 INFO L93 Difference]: Finished difference Result 4581 states and 5398 transitions. [2020-07-21 22:51:20,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 22:51:20,213 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 185 [2020-07-21 22:51:20,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:51:20,226 INFO L225 Difference]: With dead ends: 4581 [2020-07-21 22:51:20,227 INFO L226 Difference]: Without dead ends: 2812 [2020-07-21 22:51:20,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 368 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 22:51:20,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2812 states. [2020-07-21 22:51:20,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2812 to 1839. [2020-07-21 22:51:20,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1839 states. [2020-07-21 22:51:20,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1839 states to 1839 states and 2043 transitions. [2020-07-21 22:51:20,290 INFO L78 Accepts]: Start accepts. Automaton has 1839 states and 2043 transitions. Word has length 185 [2020-07-21 22:51:20,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:51:20,291 INFO L479 AbstractCegarLoop]: Abstraction has 1839 states and 2043 transitions. [2020-07-21 22:51:20,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:51:20,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1839 states and 2043 transitions. [2020-07-21 22:51:20,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-07-21 22:51:20,297 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:51:20,297 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:51:20,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:20,513 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:51:20,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:51:20,513 INFO L82 PathProgramCache]: Analyzing trace with hash 634873, now seen corresponding path program 1 times [2020-07-21 22:51:20,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:51:20,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091847754] [2020-07-21 22:51:20,514 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 22:51:20,625 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:51:20,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:51:20,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-21 22:51:20,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:51:20,653 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 6, 1] term [2020-07-21 22:51:20,654 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:51:20,719 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 123 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-07-21 22:51:20,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:51:20,938 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-07-21 22:51:20,985 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:20,986 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:20,987 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:20,987 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:20,988 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:51:20,989 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:20,990 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[7, 2, 1] term [2020-07-21 22:51:20,990 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:21,020 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:51:21,080 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:21,081 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:51:21,248 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 108 proven. 47 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-21 22:51:21,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091847754] [2020-07-21 22:51:21,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:51:21,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 8 [2020-07-21 22:51:21,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197396587] [2020-07-21 22:51:21,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 22:51:21,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:51:21,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 22:51:21,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-07-21 22:51:21,250 INFO L87 Difference]: Start difference. First operand 1839 states and 2043 transitions. Second operand 8 states. [2020-07-21 22:51:22,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:51:22,210 INFO L93 Difference]: Finished difference Result 3759 states and 4234 transitions. [2020-07-21 22:51:22,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 22:51:22,214 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 207 [2020-07-21 22:51:22,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:51:22,222 INFO L225 Difference]: With dead ends: 3759 [2020-07-21 22:51:22,222 INFO L226 Difference]: Without dead ends: 1845 [2020-07-21 22:51:22,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 409 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 22:51:22,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1845 states. [2020-07-21 22:51:22,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1845 to 1686. [2020-07-21 22:51:22,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1686 states. [2020-07-21 22:51:22,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1686 states to 1686 states and 1876 transitions. [2020-07-21 22:51:22,271 INFO L78 Accepts]: Start accepts. Automaton has 1686 states and 1876 transitions. Word has length 207 [2020-07-21 22:51:22,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:51:22,271 INFO L479 AbstractCegarLoop]: Abstraction has 1686 states and 1876 transitions. [2020-07-21 22:51:22,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 22:51:22,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1686 states and 1876 transitions. [2020-07-21 22:51:22,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-07-21 22:51:22,278 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:51:22,278 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-07-21 22:51:22,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:22,492 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:51:22,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:51:22,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1128746401, now seen corresponding path program 1 times [2020-07-21 22:51:22,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:51:22,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [30988562] [2020-07-21 22:51:22,494 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 22:51:22,631 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:51:22,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:51:22,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:51:22,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:51:22,693 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-07-21 22:51:22,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:51:22,808 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 162 proven. 33 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-07-21 22:51:22,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [30988562] [2020-07-21 22:51:22,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:51:22,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:51:22,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200401621] [2020-07-21 22:51:22,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:51:22,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:51:22,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:51:22,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:51:22,810 INFO L87 Difference]: Start difference. First operand 1686 states and 1876 transitions. Second operand 7 states. [2020-07-21 22:51:23,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:51:23,947 INFO L93 Difference]: Finished difference Result 3445 states and 3852 transitions. [2020-07-21 22:51:23,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 22:51:23,947 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 236 [2020-07-21 22:51:23,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:51:23,954 INFO L225 Difference]: With dead ends: 3445 [2020-07-21 22:51:23,955 INFO L226 Difference]: Without dead ends: 1964 [2020-07-21 22:51:23,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 469 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-07-21 22:51:23,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1964 states. [2020-07-21 22:51:23,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1964 to 1682. [2020-07-21 22:51:23,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1682 states. [2020-07-21 22:51:23,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 1836 transitions. [2020-07-21 22:51:23,996 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 1836 transitions. Word has length 236 [2020-07-21 22:51:23,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:51:23,996 INFO L479 AbstractCegarLoop]: Abstraction has 1682 states and 1836 transitions. [2020-07-21 22:51:23,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:51:23,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 1836 transitions. [2020-07-21 22:51:24,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-07-21 22:51:24,003 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:51:24,003 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:51:24,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:24,218 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:51:24,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:51:24,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1772776995, now seen corresponding path program 1 times [2020-07-21 22:51:24,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:51:24,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59537291] [2020-07-21 22:51:24,219 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:24,337 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:51:24,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:51:24,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 22:51:24,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:51:24,416 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 215 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-07-21 22:51:24,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:51:24,654 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 40 [2020-07-21 22:51:24,709 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 22:51:24,710 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:24,710 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 1] term [2020-07-21 22:51:24,711 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:51:24,711 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:24,712 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:24,713 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:24,831 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 181 proven. 15 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-07-21 22:51:24,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59537291] [2020-07-21 22:51:24,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:51:24,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:51:24,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302123810] [2020-07-21 22:51:24,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:51:24,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:51:24,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:51:24,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:51:24,833 INFO L87 Difference]: Start difference. First operand 1682 states and 1836 transitions. Second operand 7 states. [2020-07-21 22:51:25,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:51:25,987 INFO L93 Difference]: Finished difference Result 4134 states and 4569 transitions. [2020-07-21 22:51:25,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 22:51:25,991 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 263 [2020-07-21 22:51:25,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:51:26,001 INFO L225 Difference]: With dead ends: 4134 [2020-07-21 22:51:26,001 INFO L226 Difference]: Without dead ends: 2518 [2020-07-21 22:51:26,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 524 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 22:51:26,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2020-07-21 22:51:26,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2512. [2020-07-21 22:51:26,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2512 states. [2020-07-21 22:51:26,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2512 states to 2512 states and 2764 transitions. [2020-07-21 22:51:26,060 INFO L78 Accepts]: Start accepts. Automaton has 2512 states and 2764 transitions. Word has length 263 [2020-07-21 22:51:26,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:51:26,061 INFO L479 AbstractCegarLoop]: Abstraction has 2512 states and 2764 transitions. [2020-07-21 22:51:26,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:51:26,061 INFO L276 IsEmpty]: Start isEmpty. Operand 2512 states and 2764 transitions. [2020-07-21 22:51:26,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-07-21 22:51:26,069 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:51:26,070 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 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] [2020-07-21 22:51:26,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:26,283 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:51:26,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:51:26,283 INFO L82 PathProgramCache]: Analyzing trace with hash -2142104674, now seen corresponding path program 1 times [2020-07-21 22:51:26,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:51:26,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134423375] [2020-07-21 22:51:26,284 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 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:26,451 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:51:26,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:51:26,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 22:51:26,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:51:26,492 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 2, 1] term [2020-07-21 22:51:26,492 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 22:51:26,556 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 237 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 22:51:26,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:51:26,647 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:51:26,648 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 22:51:26,683 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:51:26,950 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 237 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 22:51:26,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134423375] [2020-07-21 22:51:26,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:51:26,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:51:26,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645211323] [2020-07-21 22:51:26,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:51:26,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:51:26,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:51:26,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:51:26,954 INFO L87 Difference]: Start difference. First operand 2512 states and 2764 transitions. Second operand 7 states. [2020-07-21 22:51:28,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:51:28,051 INFO L93 Difference]: Finished difference Result 4567 states and 5045 transitions. [2020-07-21 22:51:28,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 22:51:28,052 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 276 [2020-07-21 22:51:28,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:51:28,061 INFO L225 Difference]: With dead ends: 4567 [2020-07-21 22:51:28,061 INFO L226 Difference]: Without dead ends: 2540 [2020-07-21 22:51:28,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 548 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 22:51:28,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2540 states. [2020-07-21 22:51:28,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2540 to 2518. [2020-07-21 22:51:28,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2518 states. [2020-07-21 22:51:28,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 2747 transitions. [2020-07-21 22:51:28,115 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 2747 transitions. Word has length 276 [2020-07-21 22:51:28,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:51:28,116 INFO L479 AbstractCegarLoop]: Abstraction has 2518 states and 2747 transitions. [2020-07-21 22:51:28,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:51:28,116 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 2747 transitions. [2020-07-21 22:51:28,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-07-21 22:51:28,125 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:51:28,125 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-07-21 22:51:28,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:28,341 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:51:28,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:51:28,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1164437318, now seen corresponding path program 1 times [2020-07-21 22:51:28,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:51:28,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423297879] [2020-07-21 22:51:28,343 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:28,514 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:51:28,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:51:28,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 22:51:28,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:51:28,604 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 297 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 22:51:28,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:51:28,736 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 22:51:28,736 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:28,936 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 297 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 22:51:28,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423297879] [2020-07-21 22:51:28,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:51:28,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:51:28,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112139201] [2020-07-21 22:51:28,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:51:28,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:51:28,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:51:28,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:51:28,940 INFO L87 Difference]: Start difference. First operand 2518 states and 2747 transitions. Second operand 7 states. [2020-07-21 22:51:30,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:51:30,257 INFO L93 Difference]: Finished difference Result 4974 states and 5427 transitions. [2020-07-21 22:51:30,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 22:51:30,257 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 296 [2020-07-21 22:51:30,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:51:30,258 INFO L225 Difference]: With dead ends: 4974 [2020-07-21 22:51:30,258 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 22:51:30,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 590 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-07-21 22:51:30,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 22:51:30,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 22:51:30,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 22:51:30,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 22:51:30,269 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 296 [2020-07-21 22:51:30,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:51:30,269 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 22:51:30,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:51:30,270 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 22:51:30,270 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 22:51:30,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:30,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 22:51:31,063 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 189 [2020-07-21 22:51:31,259 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 177 [2020-07-21 22:51:33,060 WARN L193 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 229 DAG size of output: 119 [2020-07-21 22:51:33,962 WARN L193 SmtUtils]: Spent 870.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 68 [2020-07-21 22:51:34,835 WARN L193 SmtUtils]: Spent 869.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 68 [2020-07-21 22:51:34,840 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 22:51:34,841 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) (= ~a20~0 |old(~a20~0)|) (= ~a21~0 |old(~a21~0)|)) [2020-07-21 22:51:34,841 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 22:51:34,841 INFO L268 CegarLoopResult]: For program point L333(lines 333 390) no Hoare annotation was computed. [2020-07-21 22:51:34,841 INFO L268 CegarLoopResult]: For program point L102(lines 102 390) no Hoare annotation was computed. [2020-07-21 22:51:34,841 INFO L268 CegarLoopResult]: For program point L565-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,841 INFO L268 CegarLoopResult]: For program point L532-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,841 INFO L268 CegarLoopResult]: For program point L499-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,841 INFO L268 CegarLoopResult]: For program point L466-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,841 INFO L268 CegarLoopResult]: For program point L433-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,841 INFO L268 CegarLoopResult]: For program point L400-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,842 INFO L268 CegarLoopResult]: For program point L268(lines 268 390) no Hoare annotation was computed. [2020-07-21 22:51:34,842 INFO L268 CegarLoopResult]: For program point L136(lines 136 390) no Hoare annotation was computed. [2020-07-21 22:51:34,842 INFO L268 CegarLoopResult]: For program point L566(line 566) no Hoare annotation was computed. [2020-07-21 22:51:34,842 INFO L268 CegarLoopResult]: For program point L533(line 533) no Hoare annotation was computed. [2020-07-21 22:51:34,842 INFO L268 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2020-07-21 22:51:34,842 INFO L268 CegarLoopResult]: For program point L467(line 467) no Hoare annotation was computed. [2020-07-21 22:51:34,842 INFO L268 CegarLoopResult]: For program point L434(line 434) no Hoare annotation was computed. [2020-07-21 22:51:34,842 INFO L268 CegarLoopResult]: For program point L401(line 401) no Hoare annotation was computed. [2020-07-21 22:51:34,842 INFO L268 CegarLoopResult]: For program point L203(lines 203 390) no Hoare annotation was computed. [2020-07-21 22:51:34,842 INFO L268 CegarLoopResult]: For program point L72(lines 72 390) no Hoare annotation was computed. [2020-07-21 22:51:34,842 INFO L268 CegarLoopResult]: For program point L568-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,842 INFO L268 CegarLoopResult]: For program point L535-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,843 INFO L268 CegarLoopResult]: For program point L502-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,843 INFO L268 CegarLoopResult]: For program point L469-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,843 INFO L268 CegarLoopResult]: For program point L436-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,843 INFO L268 CegarLoopResult]: For program point L403-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,843 INFO L268 CegarLoopResult]: For program point L337(lines 337 390) no Hoare annotation was computed. [2020-07-21 22:51:34,843 INFO L268 CegarLoopResult]: For program point L238(lines 238 390) no Hoare annotation was computed. [2020-07-21 22:51:34,843 INFO L268 CegarLoopResult]: For program point L569(line 569) no Hoare annotation was computed. [2020-07-21 22:51:34,843 INFO L268 CegarLoopResult]: For program point L536(line 536) no Hoare annotation was computed. [2020-07-21 22:51:34,843 INFO L268 CegarLoopResult]: For program point L503(line 503) no Hoare annotation was computed. [2020-07-21 22:51:34,844 INFO L268 CegarLoopResult]: For program point L470(line 470) no Hoare annotation was computed. [2020-07-21 22:51:34,844 INFO L268 CegarLoopResult]: For program point L437(line 437) no Hoare annotation was computed. [2020-07-21 22:51:34,844 INFO L268 CegarLoopResult]: For program point L404(line 404) no Hoare annotation was computed. [2020-07-21 22:51:34,844 INFO L268 CegarLoopResult]: For program point L173(lines 173 390) no Hoare annotation was computed. [2020-07-21 22:51:34,844 INFO L268 CegarLoopResult]: For program point L140(lines 140 390) no Hoare annotation was computed. [2020-07-21 22:51:34,844 INFO L268 CegarLoopResult]: For program point L372(lines 372 390) no Hoare annotation was computed. [2020-07-21 22:51:34,844 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 485) no Hoare annotation was computed. [2020-07-21 22:51:34,845 INFO L268 CegarLoopResult]: For program point L306(lines 306 390) no Hoare annotation was computed. [2020-07-21 22:51:34,845 INFO L268 CegarLoopResult]: For program point L273(lines 273 390) no Hoare annotation was computed. [2020-07-21 22:51:34,845 INFO L268 CegarLoopResult]: For program point L108(lines 108 390) no Hoare annotation was computed. [2020-07-21 22:51:34,845 INFO L268 CegarLoopResult]: For program point L571-1(lines 571 573) no Hoare annotation was computed. [2020-07-21 22:51:34,845 INFO L268 CegarLoopResult]: For program point L538-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,845 INFO L268 CegarLoopResult]: For program point L505-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,845 INFO L268 CegarLoopResult]: For program point L472-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,845 INFO L268 CegarLoopResult]: For program point L439-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,845 INFO L268 CegarLoopResult]: For program point L406-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,845 INFO L268 CegarLoopResult]: For program point L208(lines 208 390) no Hoare annotation was computed. [2020-07-21 22:51:34,845 INFO L268 CegarLoopResult]: For program point L43(lines 43 390) no Hoare annotation was computed. [2020-07-21 22:51:34,846 INFO L268 CegarLoopResult]: For program point L572(line 572) no Hoare annotation was computed. [2020-07-21 22:51:34,846 INFO L268 CegarLoopResult]: For program point L539(line 539) no Hoare annotation was computed. [2020-07-21 22:51:34,846 INFO L268 CegarLoopResult]: For program point L506(line 506) no Hoare annotation was computed. [2020-07-21 22:51:34,846 INFO L268 CegarLoopResult]: For program point L473(line 473) no Hoare annotation was computed. [2020-07-21 22:51:34,846 INFO L268 CegarLoopResult]: For program point L440(line 440) no Hoare annotation was computed. [2020-07-21 22:51:34,846 INFO L268 CegarLoopResult]: For program point L407(line 407) no Hoare annotation was computed. [2020-07-21 22:51:34,846 INFO L268 CegarLoopResult]: For program point L144(lines 144 390) no Hoare annotation was computed. [2020-07-21 22:51:34,846 INFO L268 CegarLoopResult]: For program point L541-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,846 INFO L268 CegarLoopResult]: For program point L508-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,846 INFO L268 CegarLoopResult]: For program point L475-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,846 INFO L268 CegarLoopResult]: For program point L442-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,846 INFO L268 CegarLoopResult]: For program point L409-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,847 INFO L268 CegarLoopResult]: For program point L178(lines 178 390) no Hoare annotation was computed. [2020-07-21 22:51:34,847 INFO L268 CegarLoopResult]: For program point L542(line 542) no Hoare annotation was computed. [2020-07-21 22:51:34,847 INFO L268 CegarLoopResult]: For program point L509(line 509) no Hoare annotation was computed. [2020-07-21 22:51:34,847 INFO L268 CegarLoopResult]: For program point L476(line 476) no Hoare annotation was computed. [2020-07-21 22:51:34,847 INFO L268 CegarLoopResult]: For program point L443(line 443) no Hoare annotation was computed. [2020-07-21 22:51:34,847 INFO L268 CegarLoopResult]: For program point L410(line 410) no Hoare annotation was computed. [2020-07-21 22:51:34,847 INFO L268 CegarLoopResult]: For program point L377(lines 377 390) no Hoare annotation was computed. [2020-07-21 22:51:34,847 INFO L268 CegarLoopResult]: For program point L278(lines 278 390) no Hoare annotation was computed. [2020-07-21 22:51:34,848 INFO L268 CegarLoopResult]: For program point L245(lines 245 390) no Hoare annotation was computed. [2020-07-21 22:51:34,848 INFO L268 CegarLoopResult]: For program point L80(lines 80 390) no Hoare annotation was computed. [2020-07-21 22:51:34,848 INFO L268 CegarLoopResult]: For program point L345(lines 345 390) no Hoare annotation was computed. [2020-07-21 22:51:34,848 INFO L268 CegarLoopResult]: For program point L312(lines 312 390) no Hoare annotation was computed. [2020-07-21 22:51:34,848 INFO L268 CegarLoopResult]: For program point L114(lines 114 390) no Hoare annotation was computed. [2020-07-21 22:51:34,848 INFO L268 CegarLoopResult]: For program point L544-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,848 INFO L268 CegarLoopResult]: For program point L511-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,848 INFO L268 CegarLoopResult]: For program point L478-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,848 INFO L268 CegarLoopResult]: For program point L445-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,849 INFO L268 CegarLoopResult]: For program point L412-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,849 INFO L268 CegarLoopResult]: For program point L214(lines 214 390) no Hoare annotation was computed. [2020-07-21 22:51:34,849 INFO L268 CegarLoopResult]: For program point L148(lines 148 390) no Hoare annotation was computed. [2020-07-21 22:51:34,849 INFO L268 CegarLoopResult]: For program point L49(lines 49 390) no Hoare annotation was computed. [2020-07-21 22:51:34,849 INFO L268 CegarLoopResult]: For program point L545(line 545) no Hoare annotation was computed. [2020-07-21 22:51:34,849 INFO L268 CegarLoopResult]: For program point L512(line 512) no Hoare annotation was computed. [2020-07-21 22:51:34,849 INFO L268 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2020-07-21 22:51:34,849 INFO L268 CegarLoopResult]: For program point L446(line 446) no Hoare annotation was computed. [2020-07-21 22:51:34,849 INFO L268 CegarLoopResult]: For program point L413(line 413) no Hoare annotation was computed. [2020-07-21 22:51:34,849 INFO L268 CegarLoopResult]: For program point L84(lines 84 390) no Hoare annotation was computed. [2020-07-21 22:51:34,850 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,850 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,850 INFO L268 CegarLoopResult]: For program point L547-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,850 INFO L268 CegarLoopResult]: For program point L514-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,850 INFO L268 CegarLoopResult]: For program point L481-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,850 INFO L268 CegarLoopResult]: For program point L448-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,850 INFO L268 CegarLoopResult]: For program point L382(lines 382 390) no Hoare annotation was computed. [2020-07-21 22:51:34,850 INFO L268 CegarLoopResult]: For program point L415-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,850 INFO L268 CegarLoopResult]: For program point L316(lines 316 390) no Hoare annotation was computed. [2020-07-21 22:51:34,850 INFO L268 CegarLoopResult]: For program point L250(lines 250 390) no Hoare annotation was computed. [2020-07-21 22:51:34,850 INFO L268 CegarLoopResult]: For program point L548(line 548) no Hoare annotation was computed. [2020-07-21 22:51:34,850 INFO L268 CegarLoopResult]: For program point L515(line 515) no Hoare annotation was computed. [2020-07-21 22:51:34,850 INFO L268 CegarLoopResult]: For program point L482(line 482) no Hoare annotation was computed. [2020-07-21 22:51:34,851 INFO L268 CegarLoopResult]: For program point L449(line 449) no Hoare annotation was computed. [2020-07-21 22:51:34,851 INFO L268 CegarLoopResult]: For program point L416(line 416) no Hoare annotation was computed. [2020-07-21 22:51:34,851 INFO L268 CegarLoopResult]: For program point L218(lines 218 390) no Hoare annotation was computed. [2020-07-21 22:51:34,851 INFO L268 CegarLoopResult]: For program point L152(lines 152 390) no Hoare annotation was computed. [2020-07-21 22:51:34,851 INFO L268 CegarLoopResult]: For program point L119(lines 119 390) no Hoare annotation was computed. [2020-07-21 22:51:34,851 INFO L268 CegarLoopResult]: For program point L318(lines 318 390) no Hoare annotation was computed. [2020-07-21 22:51:34,851 INFO L268 CegarLoopResult]: For program point L186(lines 186 390) no Hoare annotation was computed. [2020-07-21 22:51:34,851 INFO L268 CegarLoopResult]: For program point L54(lines 54 390) no Hoare annotation was computed. [2020-07-21 22:51:34,851 INFO L268 CegarLoopResult]: For program point L550-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,851 INFO L268 CegarLoopResult]: For program point L517-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,851 INFO L268 CegarLoopResult]: For program point L484-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,851 INFO L268 CegarLoopResult]: For program point L451-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,851 INFO L268 CegarLoopResult]: For program point L418-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,851 INFO L268 CegarLoopResult]: For program point L286(lines 286 390) no Hoare annotation was computed. [2020-07-21 22:51:34,852 INFO L268 CegarLoopResult]: For program point L551(line 551) no Hoare annotation was computed. [2020-07-21 22:51:34,852 INFO L268 CegarLoopResult]: For program point L518(line 518) no Hoare annotation was computed. [2020-07-21 22:51:34,852 INFO L268 CegarLoopResult]: For program point L485(line 485) no Hoare annotation was computed. [2020-07-21 22:51:34,852 INFO L268 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2020-07-21 22:51:34,852 INFO L268 CegarLoopResult]: For program point L419(line 419) no Hoare annotation was computed. [2020-07-21 22:51:34,852 INFO L268 CegarLoopResult]: For program point L353(lines 353 390) no Hoare annotation was computed. [2020-07-21 22:51:34,852 INFO L268 CegarLoopResult]: For program point L189(lines 189 390) no Hoare annotation was computed. [2020-07-21 22:51:34,852 INFO L268 CegarLoopResult]: For program point L553-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,852 INFO L268 CegarLoopResult]: For program point L520-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,853 INFO L268 CegarLoopResult]: For program point L487-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,853 INFO L268 CegarLoopResult]: For program point L454-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,853 INFO L268 CegarLoopResult]: For program point L421-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,853 INFO L268 CegarLoopResult]: For program point L355(lines 355 390) no Hoare annotation was computed. [2020-07-21 22:51:34,853 INFO L268 CegarLoopResult]: For program point L256(lines 256 390) no Hoare annotation was computed. [2020-07-21 22:51:34,853 INFO L268 CegarLoopResult]: For program point L223(lines 223 390) no Hoare annotation was computed. [2020-07-21 22:51:34,853 INFO L268 CegarLoopResult]: For program point L124(lines 124 390) no Hoare annotation was computed. [2020-07-21 22:51:34,853 INFO L268 CegarLoopResult]: For program point L554(line 554) no Hoare annotation was computed. [2020-07-21 22:51:34,853 INFO L268 CegarLoopResult]: For program point L521(line 521) no Hoare annotation was computed. [2020-07-21 22:51:34,854 INFO L268 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2020-07-21 22:51:34,854 INFO L268 CegarLoopResult]: For program point L455(line 455) no Hoare annotation was computed. [2020-07-21 22:51:34,854 INFO L268 CegarLoopResult]: For program point L422(line 422) no Hoare annotation was computed. [2020-07-21 22:51:34,854 INFO L268 CegarLoopResult]: For program point L92(lines 92 390) no Hoare annotation was computed. [2020-07-21 22:51:34,854 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 30 575) the Hoare annotation is: (let ((.cse28 (= 8 ~a12~0)) (.cse10 (not (<= |old(~a8~0)| 13)))) (let ((.cse22 (= 1 |old(~a17~0)|)) (.cse25 (= 1 |old(~a21~0)|)) (.cse16 (<= ~a16~0 |old(~a16~0)|)) (.cse12 (<= ~a8~0 13)) (.cse21 (= 1 |old(~a20~0)|)) (.cse27 (or .cse10 (not (<= |old(~a16~0)| 4)))) (.cse2 (not (<= |old(~a7~0)| 0))) (.cse9 (not .cse28))) (let ((.cse20 (= 1 ~a7~0)) (.cse1 (not (= 15 |old(~a8~0)|))) (.cse6 (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|)))) (.cse8 (= 15 ~a8~0)) (.cse19 (not (= 1 |old(~a7~0)|))) (.cse4 (not (< 4 |old(~a16~0)|))) (.cse24 (and .cse27 (or .cse2 .cse10 .cse9))) (.cse0 (not .cse21)) (.cse23 (or (and .cse12 (<= ~a7~0 0) .cse28) (and .cse16 .cse12 (<= ~a16~0 4)))) (.cse17 (= ~a17~0 |old(~a17~0)|)) (.cse7 (not .cse25)) (.cse3 (not (<= |old(~a16~0)| 5))) (.cse5 (not .cse22)) (.cse11 (= ~a7~0 |old(~a7~0)|)) (.cse18 (<= |old(~a16~0)| ~a16~0)) (.cse13 (= 1 ~a17~0)) (.cse14 (= ~a20~0 |old(~a20~0)|)) (.cse15 (= ~a21~0 |old(~a21~0)|)) (.cse26 (and (or .cse10 (not (<= 6 |old(~a16~0)|))) .cse27))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) (or .cse0 .cse3 .cse10 .cse4 .cse5 (and .cse11 .cse12 .cse13 (<= ~a16~0 5) (< 4 ~a16~0) .cse14 .cse15)) (or (and .cse16 .cse11 .cse17 .cse18 .cse14 .cse15) .cse2 .cse7 .cse9) (or .cse19 .cse3 (and .cse16 .cse20 .cse17 .cse18 .cse14 .cse15) (and (or .cse0 .cse5) (or .cse21 .cse22)) .cse7) (or .cse19 (and .cse16 .cse20 (<= 5 ~a16~0) .cse15) (not (<= 5 |old(~a16~0)|)) .cse7) (or (not (= 5 |old(~a16~0)|)) .cse1 .cse2 (not (<= |old(~a20~0)| 0)) .cse5 .cse6 .cse7 .cse8 .cse9) (or (and .cse11 .cse14 .cse23 .cse15) .cse24 .cse3 .cse7) (or .cse19 .cse3 .cse4 .cse14 .cse7) (or .cse24 .cse0 (and .cse11 .cse23) .cse7) (or (and .cse16 .cse11 .cse12 .cse17 .cse18 .cse14 .cse15) (and (or .cse5 .cse7) (or .cse22 .cse25)) .cse26) (or .cse3 .cse5 (and .cse16 .cse11 .cse12 .cse18 .cse13 .cse14 .cse15) .cse26))))) [2020-07-21 22:51:34,854 INFO L268 CegarLoopResult]: For program point L324(lines 324 390) no Hoare annotation was computed. [2020-07-21 22:51:34,855 INFO L268 CegarLoopResult]: For program point L556-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,855 INFO L268 CegarLoopResult]: For program point L523-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,855 INFO L268 CegarLoopResult]: For program point L490-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,855 INFO L268 CegarLoopResult]: For program point L457-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,855 INFO L268 CegarLoopResult]: For program point L391(lines 391 393) no Hoare annotation was computed. [2020-07-21 22:51:34,855 INFO L268 CegarLoopResult]: For program point L424-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,855 INFO L268 CegarLoopResult]: For program point L391-2(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,855 INFO L268 CegarLoopResult]: For program point L292(lines 292 390) no Hoare annotation was computed. [2020-07-21 22:51:34,855 INFO L268 CegarLoopResult]: For program point L160(lines 160 390) no Hoare annotation was computed. [2020-07-21 22:51:34,856 INFO L268 CegarLoopResult]: For program point L557(line 557) no Hoare annotation was computed. [2020-07-21 22:51:34,856 INFO L268 CegarLoopResult]: For program point L524(line 524) no Hoare annotation was computed. [2020-07-21 22:51:34,856 INFO L268 CegarLoopResult]: For program point L491(line 491) no Hoare annotation was computed. [2020-07-21 22:51:34,856 INFO L268 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2020-07-21 22:51:34,856 INFO L268 CegarLoopResult]: For program point L425(line 425) no Hoare annotation was computed. [2020-07-21 22:51:34,856 INFO L268 CegarLoopResult]: For program point L392(line 392) no Hoare annotation was computed. [2020-07-21 22:51:34,856 INFO L268 CegarLoopResult]: For program point L194(lines 194 390) no Hoare annotation was computed. [2020-07-21 22:51:34,856 INFO L268 CegarLoopResult]: For program point L62(lines 62 390) no Hoare annotation was computed. [2020-07-21 22:51:34,856 INFO L268 CegarLoopResult]: For program point L261(lines 261 390) no Hoare annotation was computed. [2020-07-21 22:51:34,856 INFO L268 CegarLoopResult]: For program point L129(lines 129 390) no Hoare annotation was computed. [2020-07-21 22:51:34,857 INFO L268 CegarLoopResult]: For program point L559-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,857 INFO L268 CegarLoopResult]: For program point L526-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,857 INFO L268 CegarLoopResult]: For program point L493-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,857 INFO L268 CegarLoopResult]: For program point L460-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,857 INFO L268 CegarLoopResult]: For program point L427-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,857 INFO L268 CegarLoopResult]: For program point L361(lines 361 390) no Hoare annotation was computed. [2020-07-21 22:51:34,857 INFO L268 CegarLoopResult]: For program point L394-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,857 INFO L268 CegarLoopResult]: For program point L97(lines 97 390) no Hoare annotation was computed. [2020-07-21 22:51:34,857 INFO L268 CegarLoopResult]: For program point L31(lines 31 390) no Hoare annotation was computed. [2020-07-21 22:51:34,857 INFO L268 CegarLoopResult]: For program point L560(line 560) no Hoare annotation was computed. [2020-07-21 22:51:34,858 INFO L268 CegarLoopResult]: For program point L527(line 527) no Hoare annotation was computed. [2020-07-21 22:51:34,858 INFO L268 CegarLoopResult]: For program point L494(line 494) no Hoare annotation was computed. [2020-07-21 22:51:34,858 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-21 22:51:34,858 INFO L268 CegarLoopResult]: For program point L428(line 428) no Hoare annotation was computed. [2020-07-21 22:51:34,858 INFO L268 CegarLoopResult]: For program point L395(line 395) no Hoare annotation was computed. [2020-07-21 22:51:34,858 INFO L268 CegarLoopResult]: For program point L329(lines 329 390) no Hoare annotation was computed. [2020-07-21 22:51:34,858 INFO L268 CegarLoopResult]: For program point L197(lines 197 390) no Hoare annotation was computed. [2020-07-21 22:51:34,858 INFO L268 CegarLoopResult]: For program point L65(lines 65 390) no Hoare annotation was computed. [2020-07-21 22:51:34,858 INFO L268 CegarLoopResult]: For program point L363(lines 363 390) no Hoare annotation was computed. [2020-07-21 22:51:34,858 INFO L268 CegarLoopResult]: For program point L231(lines 231 390) no Hoare annotation was computed. [2020-07-21 22:51:34,858 INFO L268 CegarLoopResult]: For program point L165(lines 165 390) no Hoare annotation was computed. [2020-07-21 22:51:34,859 INFO L268 CegarLoopResult]: For program point L562-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,859 INFO L268 CegarLoopResult]: For program point L529-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,859 INFO L268 CegarLoopResult]: For program point L496-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,859 INFO L268 CegarLoopResult]: For program point L463-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,859 INFO L268 CegarLoopResult]: For program point L430-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,859 INFO L268 CegarLoopResult]: For program point L397-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:51:34,859 INFO L268 CegarLoopResult]: For program point L265(lines 265 390) no Hoare annotation was computed. [2020-07-21 22:51:34,859 INFO L268 CegarLoopResult]: For program point L563(line 563) no Hoare annotation was computed. [2020-07-21 22:51:34,859 INFO L268 CegarLoopResult]: For program point L530(line 530) no Hoare annotation was computed. [2020-07-21 22:51:34,859 INFO L268 CegarLoopResult]: For program point L497(line 497) no Hoare annotation was computed. [2020-07-21 22:51:34,859 INFO L268 CegarLoopResult]: For program point L464(line 464) no Hoare annotation was computed. [2020-07-21 22:51:34,859 INFO L268 CegarLoopResult]: For program point L431(line 431) no Hoare annotation was computed. [2020-07-21 22:51:34,859 INFO L268 CegarLoopResult]: For program point L398(line 398) no Hoare annotation was computed. [2020-07-21 22:51:34,860 INFO L268 CegarLoopResult]: For program point L365(lines 365 390) no Hoare annotation was computed. [2020-07-21 22:51:34,860 INFO L268 CegarLoopResult]: For program point L299(lines 299 390) no Hoare annotation was computed. [2020-07-21 22:51:34,860 INFO L268 CegarLoopResult]: For program point L35(lines 35 390) no Hoare annotation was computed. [2020-07-21 22:51:34,860 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 22:51:34,860 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 22:51:34,860 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 22:51:34,860 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 22:51:34,860 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 22:51:34,860 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 577 594) no Hoare annotation was computed. [2020-07-21 22:51:34,860 INFO L264 CegarLoopResult]: At program point L591(line 591) the Hoare annotation is: (let ((.cse3 (= 1 ~a17~0))) (let ((.cse1 (not .cse3)) (.cse4 (<= ~a8~0 13)) (.cse7 (= 1 ~a20~0)) (.cse5 (= 1 ~a7~0)) (.cse6 (not (= 1 |old(~a7~0)|))) (.cse8 (<= ~a16~0 5)) (.cse0 (< 4 |old(~a16~0)|)) (.cse2 (= 1 ~a21~0))) (or (not (= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (not .cse0) (not (= 1 |old(~a17~0)|)) (and (or (and .cse1 (not .cse2)) (and .cse3 .cse2)) .cse4 (<= 6 ~a16~0)) (and .cse5 .cse6 (or (and (not .cse7) .cse1) (and .cse3 .cse7)) .cse8 .cse0 .cse2) (and .cse4 (<= ~a16~0 4)) (not (= 1 |old(~a20~0)|)) (and (<= ~a7~0 0) (= ~a21~0 |old(~a21~0)|)) (not (<= |old(~a16~0)| 5)) (and .cse4 .cse3 .cse8 .cse7) (and .cse5 .cse6 .cse8 .cse0 .cse2 (< 4 ~a16~0)) (not (= 1 |old(~a21~0)|)) (not (= 8 ~a12~0))))) [2020-07-21 22:51:34,860 INFO L268 CegarLoopResult]: For program point L591-1(line 591) no Hoare annotation was computed. [2020-07-21 22:51:34,861 INFO L268 CegarLoopResult]: For program point L588(line 588) no Hoare annotation was computed. [2020-07-21 22:51:34,861 INFO L264 CegarLoopResult]: At program point L583-2(lines 583 593) the Hoare annotation is: (let ((.cse3 (= 1 ~a17~0))) (let ((.cse1 (not .cse3)) (.cse4 (<= ~a8~0 13)) (.cse7 (= 1 ~a20~0)) (.cse5 (= 1 ~a7~0)) (.cse6 (not (= 1 |old(~a7~0)|))) (.cse8 (<= ~a16~0 5)) (.cse0 (< 4 |old(~a16~0)|)) (.cse2 (= 1 ~a21~0))) (or (not (= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (not .cse0) (not (= 1 |old(~a17~0)|)) (and (or (and .cse1 (not .cse2)) (and .cse3 .cse2)) .cse4 (<= 6 ~a16~0)) (and .cse5 .cse6 (or (and (not .cse7) .cse1) (and .cse3 .cse7)) .cse8 .cse0 .cse2) (and .cse4 (<= ~a16~0 4)) (not (= 1 |old(~a20~0)|)) (and (<= ~a7~0 0) (= ~a21~0 |old(~a21~0)|)) (not (<= |old(~a16~0)| 5)) (and .cse4 .cse3 .cse8 .cse7) (and .cse5 .cse6 .cse8 .cse0 .cse2 (< 4 ~a16~0)) (not (= 1 |old(~a21~0)|)) (not (= 8 ~a12~0))))) [2020-07-21 22:51:34,861 INFO L268 CegarLoopResult]: For program point L583-3(lines 577 594) no Hoare annotation was computed. [2020-07-21 22:51:34,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:51:34 BoogieIcfgContainer [2020-07-21 22:51:34,882 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 22:51:34,884 INFO L168 Benchmark]: Toolchain (without parser) took 36706.17 ms. Allocated memory was 145.2 MB in the beginning and 575.7 MB in the end (delta: 430.4 MB). Free memory was 100.7 MB in the beginning and 440.0 MB in the end (delta: -339.3 MB). Peak memory consumption was 428.6 MB. Max. memory is 7.1 GB. [2020-07-21 22:51:34,884 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 145.2 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-21 22:51:34,885 INFO L168 Benchmark]: CACSL2BoogieTranslator took 784.20 ms. Allocated memory was 145.2 MB in the beginning and 207.1 MB in the end (delta: 61.9 MB). Free memory was 100.2 MB in the beginning and 173.9 MB in the end (delta: -73.6 MB). Peak memory consumption was 31.1 MB. Max. memory is 7.1 GB. [2020-07-21 22:51:34,885 INFO L168 Benchmark]: Boogie Preprocessor took 106.49 ms. Allocated memory is still 207.1 MB. Free memory was 173.9 MB in the beginning and 168.3 MB in the end (delta: 5.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 7.1 GB. [2020-07-21 22:51:34,886 INFO L168 Benchmark]: RCFGBuilder took 1198.45 ms. Allocated memory was 207.1 MB in the beginning and 238.0 MB in the end (delta: 30.9 MB). Free memory was 168.3 MB in the beginning and 178.7 MB in the end (delta: -10.4 MB). Peak memory consumption was 80.7 MB. Max. memory is 7.1 GB. [2020-07-21 22:51:34,887 INFO L168 Benchmark]: TraceAbstraction took 34610.60 ms. Allocated memory was 238.0 MB in the beginning and 575.7 MB in the end (delta: 337.6 MB). Free memory was 178.7 MB in the beginning and 440.0 MB in the end (delta: -261.3 MB). Peak memory consumption was 413.8 MB. Max. memory is 7.1 GB. [2020-07-21 22:51:34,889 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 145.2 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 784.20 ms. Allocated memory was 145.2 MB in the beginning and 207.1 MB in the end (delta: 61.9 MB). Free memory was 100.2 MB in the beginning and 173.9 MB in the end (delta: -73.6 MB). Peak memory consumption was 31.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.49 ms. Allocated memory is still 207.1 MB. Free memory was 173.9 MB in the beginning and 168.3 MB in the end (delta: 5.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1198.45 ms. Allocated memory was 207.1 MB in the beginning and 238.0 MB in the end (delta: 30.9 MB). Free memory was 168.3 MB in the beginning and 178.7 MB in the end (delta: -10.4 MB). Peak memory consumption was 80.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 34610.60 ms. Allocated memory was 238.0 MB in the beginning and 575.7 MB in the end (delta: 337.6 MB). Free memory was 178.7 MB in the beginning and 440.0 MB in the end (delta: -261.3 MB). Peak memory consumption was 413.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 485]: 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: ((((((((((((!(15 == \old(a8)) || !(\old(a7) <= 0)) || !(4 < \old(a16))) || !(1 == \old(a17))) || ((((!(1 == a17) && !(1 == a21)) || (1 == a17 && 1 == a21)) && a8 <= 13) && 6 <= a16)) || (((((1 == a7 && !(1 == \old(a7))) && ((!(1 == a20) && !(1 == a17)) || (1 == a17 && 1 == a20))) && a16 <= 5) && 4 < \old(a16)) && 1 == a21)) || (a8 <= 13 && a16 <= 4)) || !(1 == \old(a20))) || (a7 <= 0 && a21 == \old(a21))) || !(\old(a16) <= 5)) || (((a8 <= 13 && 1 == a17) && a16 <= 5) && 1 == a20)) || (((((1 == a7 && !(1 == \old(a7))) && a16 <= 5) && 4 < \old(a16)) && 1 == a21) && 4 < a16)) || !(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: 30.1s, OverallIterations: 12, TraceHistogramMax: 6, AutomataDifference: 17.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 586 SDtfs, 6585 SDslu, 660 SDs, 0 SdLazy, 12775 SolverSat, 1478 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4350 GetRequests, 4198 SyntacticMatches, 12 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 5.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2518occurred in iteration=11, 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, 12 MinimizatonAttempts, 2192 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 152 PreInvPairs, 204 NumberOfFragments, 888 HoareAnnotationTreeSize, 152 FomulaSimplifications, 18768 FormulaSimplificationTreeSizeReduction, 0.7s HoareSimplificationTime, 7 FomulaSimplificationsInter, 13463 FormulaSimplificationTreeSizeReductionInter, 3.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 2249 NumberOfCodeBlocks, 1319 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 4247 ConstructedInterpolants, 0 QuantifiedInterpolants, 4089655 SizeOfPredicates, 62 NumberOfNonLiveVariables, 4903 ConjunctsInSsa, 213 ConjunctsInUnsatCore, 22 InterpolantComputations, 2 PerfectInterpolantSequences, 3303/3462 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...