/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_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 01:19:16,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 01:19:16,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 01:19:16,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 01:19:16,924 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 01:19:16,926 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 01:19:16,928 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 01:19:16,930 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 01:19:16,931 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 01:19:16,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 01:19:16,934 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 01:19:16,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 01:19:16,935 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 01:19:16,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 01:19:16,937 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 01:19:16,938 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 01:19:16,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 01:19:16,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 01:19:16,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 01:19:16,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 01:19:16,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 01:19:16,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 01:19:16,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 01:19:16,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 01:19:16,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 01:19:16,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 01:19:16,959 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 01:19:16,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 01:19:16,961 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 01:19:16,976 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 01:19:16,976 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 01:19:16,977 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 01:19:16,978 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 01:19:16,978 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 01:19:16,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 01:19:16,978 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 01:19:16,978 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 01:19:16,979 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 01:19:16,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 01:19:16,979 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 01:19:16,979 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 01:19:16,979 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 01:19:16,980 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 01:19:16,980 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 01:19:16,980 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 01:19:16,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 01:19:16,980 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 01:19:16,981 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 01:19:16,981 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 01:19:16,981 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 01:19:16,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 01:19:16,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 01:19:16,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 01:19:16,982 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 01:19:16,982 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 01:19:16,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:19:16,982 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 01:19:16,982 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 01:19:16,983 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 01:19:17,255 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 01:19:17,270 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 01:19:17,273 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 01:19:17,275 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 01:19:17,275 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 01:19:17,276 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label19.c [2020-07-21 01:19:17,357 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dadf454e4/b7b4e684580d4dbdbefa8c95b37aead9/FLAGd3787c9ef [2020-07-21 01:19:17,947 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 01:19:17,947 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label19.c [2020-07-21 01:19:17,964 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dadf454e4/b7b4e684580d4dbdbefa8c95b37aead9/FLAGd3787c9ef [2020-07-21 01:19:18,200 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dadf454e4/b7b4e684580d4dbdbefa8c95b37aead9 [2020-07-21 01:19:18,210 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 01:19:18,213 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 01:19:18,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 01:19:18,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 01:19:18,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 01:19:18,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:19:18" (1/1) ... [2020-07-21 01:19:18,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5957ebad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:18, skipping insertion in model container [2020-07-21 01:19:18,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:19:18" (1/1) ... [2020-07-21 01:19:18,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 01:19:18,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 01:19:18,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:19:18,798 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 01:19:18,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:19:18,997 INFO L208 MainTranslator]: Completed translation [2020-07-21 01:19:18,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:18 WrapperNode [2020-07-21 01:19:18,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 01:19:18,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 01:19:18,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 01:19:18,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 01:19:19,013 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:18" (1/1) ... [2020-07-21 01:19:19,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:18" (1/1) ... [2020-07-21 01:19:19,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:18" (1/1) ... [2020-07-21 01:19:19,034 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:18" (1/1) ... [2020-07-21 01:19:19,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:18" (1/1) ... [2020-07-21 01:19:19,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:18" (1/1) ... [2020-07-21 01:19:19,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:18" (1/1) ... [2020-07-21 01:19:19,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 01:19:19,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 01:19:19,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 01:19:19,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 01:19:19,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:18" (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 01:19:19,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 01:19:19,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 01:19:19,184 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 01:19:19,185 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 01:19:19,185 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 01:19:19,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 01:19:19,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 01:19:19,185 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 01:19:19,186 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 01:19:19,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 01:19:19,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 01:19:20,342 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 01:19:20,342 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 01:19:20,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:19:20 BoogieIcfgContainer [2020-07-21 01:19:20,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 01:19:20,350 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 01:19:20,350 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 01:19:20,354 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 01:19:20,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:19:18" (1/3) ... [2020-07-21 01:19:20,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56c4ed2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:19:20, skipping insertion in model container [2020-07-21 01:19:20,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:18" (2/3) ... [2020-07-21 01:19:20,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56c4ed2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:19:20, skipping insertion in model container [2020-07-21 01:19:20,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:19:20" (3/3) ... [2020-07-21 01:19:20,358 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label19.c [2020-07-21 01:19:20,369 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 01:19:20,378 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 01:19:20,393 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 01:19:20,421 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 01:19:20,422 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 01:19:20,422 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 01:19:20,422 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 01:19:20,422 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 01:19:20,423 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 01:19:20,423 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 01:19:20,423 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 01:19:20,447 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-07-21 01:19:20,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-07-21 01:19:20,459 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:19:20,461 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] [2020-07-21 01:19:20,461 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:19:20,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:19:20,468 INFO L82 PathProgramCache]: Analyzing trace with hash -940773154, now seen corresponding path program 1 times [2020-07-21 01:19:20,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:19:20,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471964012] [2020-07-21 01:19:20,479 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 01:19:20,709 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:19:20,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:19:20,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 68 conjunts are in the unsatisfiable core [2020-07-21 01:19:20,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:19:21,072 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 31 [2020-07-21 01:19:21,629 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 01:19:21,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:19:21,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471964012] [2020-07-21 01:19:21,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:19:21,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-21 01:19:21,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525362863] [2020-07-21 01:19:21,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-21 01:19:21,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:19:21,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-21 01:19:21,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-07-21 01:19:21,667 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 11 states. [2020-07-21 01:19:23,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:19:23,388 INFO L93 Difference]: Finished difference Result 472 states and 791 transitions. [2020-07-21 01:19:23,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 01:19:23,390 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 92 [2020-07-21 01:19:23,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:19:23,405 INFO L225 Difference]: With dead ends: 472 [2020-07-21 01:19:23,405 INFO L226 Difference]: Without dead ends: 203 [2020-07-21 01:19:23,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 82 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 01:19:23,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-07-21 01:19:23,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-07-21 01:19:23,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-07-21 01:19:23,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 275 transitions. [2020-07-21 01:19:23,474 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 275 transitions. Word has length 92 [2020-07-21 01:19:23,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:19:23,475 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 275 transitions. [2020-07-21 01:19:23,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-21 01:19:23,476 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 275 transitions. [2020-07-21 01:19:23,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-07-21 01:19:23,481 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:19:23,481 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] [2020-07-21 01:19:23,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:19:23,689 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:19:23,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:19:23,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1150552775, now seen corresponding path program 1 times [2020-07-21 01:19:23,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:19:23,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564791560] [2020-07-21 01:19:23,692 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 01:19:23,809 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:19:23,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:19:23,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 01:19:23,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:19:23,856 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-21 01:19:23,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:19:23,929 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-21 01:19:23,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564791560] [2020-07-21 01:19:23,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-21 01:19:23,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2020-07-21 01:19:23,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034100165] [2020-07-21 01:19:23,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 01:19:23,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:19:23,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 01:19:23,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 01:19:23,935 INFO L87 Difference]: Start difference. First operand 203 states and 275 transitions. Second operand 4 states. [2020-07-21 01:19:24,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:19:24,607 INFO L93 Difference]: Finished difference Result 477 states and 686 transitions. [2020-07-21 01:19:24,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 01:19:24,608 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2020-07-21 01:19:24,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:19:24,613 INFO L225 Difference]: With dead ends: 477 [2020-07-21 01:19:24,613 INFO L226 Difference]: Without dead ends: 340 [2020-07-21 01:19:24,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 192 SyntacticMatches, 4 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 01:19:24,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-07-21 01:19:24,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2020-07-21 01:19:24,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2020-07-21 01:19:24,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 463 transitions. [2020-07-21 01:19:24,646 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 463 transitions. Word has length 100 [2020-07-21 01:19:24,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:19:24,647 INFO L479 AbstractCegarLoop]: Abstraction has 340 states and 463 transitions. [2020-07-21 01:19:24,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 01:19:24,647 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 463 transitions. [2020-07-21 01:19:24,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-07-21 01:19:24,656 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:19:24,656 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] [2020-07-21 01:19:24,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:19:24,871 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:19:24,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:19:24,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1797779511, now seen corresponding path program 1 times [2020-07-21 01:19:24,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:19:24,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054528048] [2020-07-21 01:19:24,872 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 01:19:24,982 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:19:24,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:19:24,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:19:24,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:19:25,027 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 01:19:25,028 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:19:25,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054528048] [2020-07-21 01:19:25,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:19:25,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:19:25,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209498927] [2020-07-21 01:19:25,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:19:25,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:19:25,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:19:25,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:19:25,047 INFO L87 Difference]: Start difference. First operand 340 states and 463 transitions. Second operand 3 states. [2020-07-21 01:19:25,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:19:25,568 INFO L93 Difference]: Finished difference Result 886 states and 1258 transitions. [2020-07-21 01:19:25,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:19:25,569 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-07-21 01:19:25,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:19:25,574 INFO L225 Difference]: With dead ends: 886 [2020-07-21 01:19:25,574 INFO L226 Difference]: Without dead ends: 612 [2020-07-21 01:19:25,576 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 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 01:19:25,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2020-07-21 01:19:25,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 612. [2020-07-21 01:19:25,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 612 states. [2020-07-21 01:19:25,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 808 transitions. [2020-07-21 01:19:25,617 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 808 transitions. Word has length 103 [2020-07-21 01:19:25,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:19:25,618 INFO L479 AbstractCegarLoop]: Abstraction has 612 states and 808 transitions. [2020-07-21 01:19:25,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:19:25,619 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 808 transitions. [2020-07-21 01:19:25,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-07-21 01:19:25,627 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:19:25,627 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:19:25,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:19:25,841 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:19:25,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:19:25,842 INFO L82 PathProgramCache]: Analyzing trace with hash 2130698740, now seen corresponding path program 1 times [2020-07-21 01:19:25,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:19:25,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623295267] [2020-07-21 01:19:25,843 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 01:19:25,964 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 01:19:25,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:19:25,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 01:19:25,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:19:26,001 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 6, 1] term [2020-07-21 01:19:26,002 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:19:26,041 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:19:26,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:19:26,237 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-07-21 01:19:26,284 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:19:26,285 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:19:26,288 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 01:19:26,289 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:19:26,289 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:19:26,290 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:19:26,291 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:19:26,292 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:19:26,293 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:19:26,294 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:19:26,323 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:19:26,403 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:19:26,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623295267] [2020-07-21 01:19:26,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:19:26,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:19:26,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924124588] [2020-07-21 01:19:26,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:19:26,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:19:26,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:19:26,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:19:26,407 INFO L87 Difference]: Start difference. First operand 612 states and 808 transitions. Second operand 7 states. [2020-07-21 01:19:27,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:19:27,708 INFO L93 Difference]: Finished difference Result 1879 states and 2539 transitions. [2020-07-21 01:19:27,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 01:19:27,708 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2020-07-21 01:19:27,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:19:27,719 INFO L225 Difference]: With dead ends: 1879 [2020-07-21 01:19:27,720 INFO L226 Difference]: Without dead ends: 1333 [2020-07-21 01:19:27,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 225 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 01:19:27,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2020-07-21 01:19:27,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 1323. [2020-07-21 01:19:27,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1323 states. [2020-07-21 01:19:27,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 1620 transitions. [2020-07-21 01:19:27,786 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 1620 transitions. Word has length 115 [2020-07-21 01:19:27,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:19:27,788 INFO L479 AbstractCegarLoop]: Abstraction has 1323 states and 1620 transitions. [2020-07-21 01:19:27,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:19:27,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 1620 transitions. [2020-07-21 01:19:27,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-07-21 01:19:27,794 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:19:27,795 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:19:28,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:19:28,008 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:19:28,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:19:28,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1128975158, now seen corresponding path program 1 times [2020-07-21 01:19:28,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:19:28,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1230849025] [2020-07-21 01:19:28,009 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 01:19:28,082 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 01:19:28,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:19:28,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 01:19:28,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:19:28,138 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:19:28,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:19:28,338 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-07-21 01:19:28,382 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:19:28,384 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:19:28,384 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:19:28,385 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[4, 2, 1] term [2020-07-21 01:19:28,385 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:19:28,386 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 01:19:28,387 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:19:28,511 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:19:28,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1230849025] [2020-07-21 01:19:28,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:19:28,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:19:28,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395439316] [2020-07-21 01:19:28,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:19:28,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:19:28,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:19:28,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:19:28,514 INFO L87 Difference]: Start difference. First operand 1323 states and 1620 transitions. Second operand 7 states. [2020-07-21 01:19:30,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:19:30,083 INFO L93 Difference]: Finished difference Result 3406 states and 4260 transitions. [2020-07-21 01:19:30,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 01:19:30,084 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-07-21 01:19:30,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:19:30,094 INFO L225 Difference]: With dead ends: 3406 [2020-07-21 01:19:30,094 INFO L226 Difference]: Without dead ends: 2008 [2020-07-21 01:19:30,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 232 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 01:19:30,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2008 states. [2020-07-21 01:19:30,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2008 to 1873. [2020-07-21 01:19:30,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1873 states. [2020-07-21 01:19:30,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 2143 transitions. [2020-07-21 01:19:30,158 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 2143 transitions. Word has length 118 [2020-07-21 01:19:30,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:19:30,159 INFO L479 AbstractCegarLoop]: Abstraction has 1873 states and 2143 transitions. [2020-07-21 01:19:30,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:19:30,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 2143 transitions. [2020-07-21 01:19:30,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-07-21 01:19:30,163 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:19:30,164 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:19:30,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:19:30,379 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:19:30,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:19:30,380 INFO L82 PathProgramCache]: Analyzing trace with hash -491889195, now seen corresponding path program 1 times [2020-07-21 01:19:30,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:19:30,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820746161] [2020-07-21 01:19:30,381 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 01:19:30,531 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 01:19:30,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:19:30,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:19:30,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:19:30,571 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-07-21 01:19:30,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:19:30,634 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 37 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-21 01:19:30,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820746161] [2020-07-21 01:19:30,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:19:30,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:19:30,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077664378] [2020-07-21 01:19:30,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:19:30,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:19:30,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:19:30,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:19:30,637 INFO L87 Difference]: Start difference. First operand 1873 states and 2143 transitions. Second operand 7 states. [2020-07-21 01:19:31,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:19:31,386 INFO L93 Difference]: Finished difference Result 4540 states and 5371 transitions. [2020-07-21 01:19:31,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 01:19:31,386 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 128 [2020-07-21 01:19:31,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:19:31,400 INFO L225 Difference]: With dead ends: 4540 [2020-07-21 01:19:31,400 INFO L226 Difference]: Without dead ends: 2594 [2020-07-21 01:19:31,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 250 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-21 01:19:31,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2594 states. [2020-07-21 01:19:31,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2594 to 2570. [2020-07-21 01:19:31,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2570 states. [2020-07-21 01:19:31,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2570 states to 2570 states and 3037 transitions. [2020-07-21 01:19:31,483 INFO L78 Accepts]: Start accepts. Automaton has 2570 states and 3037 transitions. Word has length 128 [2020-07-21 01:19:31,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:19:31,483 INFO L479 AbstractCegarLoop]: Abstraction has 2570 states and 3037 transitions. [2020-07-21 01:19:31,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:19:31,483 INFO L276 IsEmpty]: Start isEmpty. Operand 2570 states and 3037 transitions. [2020-07-21 01:19:31,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-07-21 01:19:31,490 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:19:31,490 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:19:31,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:19:31,706 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:19:31,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:19:31,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1030924100, now seen corresponding path program 1 times [2020-07-21 01:19:31,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:19:31,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573359081] [2020-07-21 01:19:31,708 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 01:19:31,790 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 01:19:31,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:19:31,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 01:19:31,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:19:31,817 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 3, 1] term [2020-07-21 01:19:31,818 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 01:19:31,898 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-07-21 01:19:31,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:19:32,036 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:19:32,037 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:19:32,038 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:19:32,064 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:19:32,162 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 63 proven. 32 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-07-21 01:19:32,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573359081] [2020-07-21 01:19:32,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:19:32,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:19:32,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620261938] [2020-07-21 01:19:32,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:19:32,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:19:32,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:19:32,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:19:32,164 INFO L87 Difference]: Start difference. First operand 2570 states and 3037 transitions. Second operand 7 states. [2020-07-21 01:19:33,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:19:33,017 INFO L93 Difference]: Finished difference Result 5380 states and 6492 transitions. [2020-07-21 01:19:33,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 01:19:33,017 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 153 [2020-07-21 01:19:33,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:19:33,032 INFO L225 Difference]: With dead ends: 5380 [2020-07-21 01:19:33,032 INFO L226 Difference]: Without dead ends: 2876 [2020-07-21 01:19:33,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 302 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 01:19:33,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2876 states. [2020-07-21 01:19:33,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2876 to 2721. [2020-07-21 01:19:33,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2721 states. [2020-07-21 01:19:33,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2721 states to 2721 states and 3197 transitions. [2020-07-21 01:19:33,137 INFO L78 Accepts]: Start accepts. Automaton has 2721 states and 3197 transitions. Word has length 153 [2020-07-21 01:19:33,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:19:33,137 INFO L479 AbstractCegarLoop]: Abstraction has 2721 states and 3197 transitions. [2020-07-21 01:19:33,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:19:33,137 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 3197 transitions. [2020-07-21 01:19:33,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-07-21 01:19:33,144 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:19:33,144 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:19:33,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:19:33,358 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:19:33,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:19:33,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1783694105, now seen corresponding path program 1 times [2020-07-21 01:19:33,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:19:33,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833298813] [2020-07-21 01:19:33,360 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 01:19:33,468 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:19:33,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:19:33,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 01:19:33,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:19:33,566 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 118 proven. 2 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-07-21 01:19:33,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:19:33,762 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-07-21 01:19:33,797 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:19:33,799 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:19:33,800 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:19:33,802 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 01:19:33,803 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:19:33,804 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 1] term [2020-07-21 01:19:33,805 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:19:33,916 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 105 proven. 15 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-07-21 01:19:33,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833298813] [2020-07-21 01:19:33,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:19:33,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:19:33,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930712035] [2020-07-21 01:19:33,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:19:33,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:19:33,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:19:33,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:19:33,919 INFO L87 Difference]: Start difference. First operand 2721 states and 3197 transitions. Second operand 7 states. [2020-07-21 01:19:35,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:19:35,258 INFO L93 Difference]: Finished difference Result 7030 states and 8486 transitions. [2020-07-21 01:19:35,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 01:19:35,261 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 189 [2020-07-21 01:19:35,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:19:35,283 INFO L225 Difference]: With dead ends: 7030 [2020-07-21 01:19:35,284 INFO L226 Difference]: Without dead ends: 4375 [2020-07-21 01:19:35,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 376 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 01:19:35,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4375 states. [2020-07-21 01:19:35,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4375 to 2868. [2020-07-21 01:19:35,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2868 states. [2020-07-21 01:19:35,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2868 states to 2868 states and 3282 transitions. [2020-07-21 01:19:35,382 INFO L78 Accepts]: Start accepts. Automaton has 2868 states and 3282 transitions. Word has length 189 [2020-07-21 01:19:35,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:19:35,383 INFO L479 AbstractCegarLoop]: Abstraction has 2868 states and 3282 transitions. [2020-07-21 01:19:35,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:19:35,383 INFO L276 IsEmpty]: Start isEmpty. Operand 2868 states and 3282 transitions. [2020-07-21 01:19:35,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-07-21 01:19:35,393 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:19:35,393 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:19:35,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:19:35,607 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:19:35,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:19:35,608 INFO L82 PathProgramCache]: Analyzing trace with hash -201537607, now seen corresponding path program 1 times [2020-07-21 01:19:35,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:19:35,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334307098] [2020-07-21 01:19:35,608 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 01:19:35,725 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:19:35,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:19:35,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-21 01:19:35,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:19:35,774 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 6, 1] term [2020-07-21 01:19:35,774 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:19:35,886 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 172 proven. 6 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-07-21 01:19:35,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:19:36,121 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 40 [2020-07-21 01:19:36,173 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:19:36,174 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:19:36,176 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:19:36,178 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:19:36,179 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:19:36,185 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:19:36,186 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:19:36,187 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[9, 2, 1] term [2020-07-21 01:19:36,188 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:19:36,189 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 2, 1] term [2020-07-21 01:19:36,189 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:19:36,225 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:19:36,282 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:19:36,284 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:19:36,530 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 140 proven. 83 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-07-21 01:19:36,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1334307098] [2020-07-21 01:19:36,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:19:36,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 8 [2020-07-21 01:19:36,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133706321] [2020-07-21 01:19:36,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 01:19:36,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:19:36,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 01:19:36,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-07-21 01:19:36,535 INFO L87 Difference]: Start difference. First operand 2868 states and 3282 transitions. Second operand 8 states. [2020-07-21 01:19:37,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:19:37,387 INFO L93 Difference]: Finished difference Result 6103 states and 7053 transitions. [2020-07-21 01:19:37,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 01:19:37,387 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 217 [2020-07-21 01:19:37,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:19:37,401 INFO L225 Difference]: With dead ends: 6103 [2020-07-21 01:19:37,401 INFO L226 Difference]: Without dead ends: 3301 [2020-07-21 01:19:37,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 429 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-07-21 01:19:37,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3301 states. [2020-07-21 01:19:37,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3301 to 3003. [2020-07-21 01:19:37,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3003 states. [2020-07-21 01:19:37,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3003 states to 3003 states and 3387 transitions. [2020-07-21 01:19:37,493 INFO L78 Accepts]: Start accepts. Automaton has 3003 states and 3387 transitions. Word has length 217 [2020-07-21 01:19:37,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:19:37,494 INFO L479 AbstractCegarLoop]: Abstraction has 3003 states and 3387 transitions. [2020-07-21 01:19:37,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 01:19:37,494 INFO L276 IsEmpty]: Start isEmpty. Operand 3003 states and 3387 transitions. [2020-07-21 01:19:37,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-07-21 01:19:37,503 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:19:37,503 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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] [2020-07-21 01:19:37,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:19:37,718 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:19:37,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:19:37,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1917647538, now seen corresponding path program 1 times [2020-07-21 01:19:37,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:19:37,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912295806] [2020-07-21 01:19:37,719 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 01:19:37,886 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:19:37,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:19:37,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:19:37,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:19:37,965 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 281 proven. 2 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2020-07-21 01:19:37,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:19:38,186 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 209 proven. 74 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2020-07-21 01:19:38,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912295806] [2020-07-21 01:19:38,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:19:38,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:19:38,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955905276] [2020-07-21 01:19:38,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:19:38,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:19:38,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:19:38,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:19:38,190 INFO L87 Difference]: Start difference. First operand 3003 states and 3387 transitions. Second operand 7 states. [2020-07-21 01:19:39,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:19:39,396 INFO L93 Difference]: Finished difference Result 6224 states and 7039 transitions. [2020-07-21 01:19:39,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 01:19:39,397 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 264 [2020-07-21 01:19:39,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:19:39,410 INFO L225 Difference]: With dead ends: 6224 [2020-07-21 01:19:39,410 INFO L226 Difference]: Without dead ends: 3287 [2020-07-21 01:19:39,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 525 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-07-21 01:19:39,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3287 states. [2020-07-21 01:19:39,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3287 to 2999. [2020-07-21 01:19:39,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2999 states. [2020-07-21 01:19:39,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2999 states to 2999 states and 3295 transitions. [2020-07-21 01:19:39,487 INFO L78 Accepts]: Start accepts. Automaton has 2999 states and 3295 transitions. Word has length 264 [2020-07-21 01:19:39,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:19:39,487 INFO L479 AbstractCegarLoop]: Abstraction has 2999 states and 3295 transitions. [2020-07-21 01:19:39,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:19:39,487 INFO L276 IsEmpty]: Start isEmpty. Operand 2999 states and 3295 transitions. [2020-07-21 01:19:39,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-07-21 01:19:39,501 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:19:39,501 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-07-21 01:19:39,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:19:39,716 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:19:39,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:19:39,716 INFO L82 PathProgramCache]: Analyzing trace with hash 583835934, now seen corresponding path program 1 times [2020-07-21 01:19:39,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:19:39,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754071079] [2020-07-21 01:19:39,717 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 01:19:39,887 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:19:39,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:19:39,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 01:19:39,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:19:39,923 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 1] term [2020-07-21 01:19:39,924 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:19:40,034 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 283 proven. 2 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2020-07-21 01:19:40,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:19:40,163 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:19:40,164 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[5, 2, 1] term [2020-07-21 01:19:40,164 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:19:40,190 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:19:40,344 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 283 proven. 2 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2020-07-21 01:19:40,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754071079] [2020-07-21 01:19:40,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:19:40,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:19:40,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648148210] [2020-07-21 01:19:40,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:19:40,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:19:40,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:19:40,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:19:40,347 INFO L87 Difference]: Start difference. First operand 2999 states and 3295 transitions. Second operand 7 states. [2020-07-21 01:19:41,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:19:41,729 INFO L93 Difference]: Finished difference Result 6250 states and 6921 transitions. [2020-07-21 01:19:41,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 01:19:41,729 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 286 [2020-07-21 01:19:41,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:19:41,743 INFO L225 Difference]: With dead ends: 6250 [2020-07-21 01:19:41,743 INFO L226 Difference]: Without dead ends: 3180 [2020-07-21 01:19:41,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 579 GetRequests, 569 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-07-21 01:19:41,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3180 states. [2020-07-21 01:19:41,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3180 to 2999. [2020-07-21 01:19:41,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2999 states. [2020-07-21 01:19:41,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2999 states to 2999 states and 3257 transitions. [2020-07-21 01:19:41,862 INFO L78 Accepts]: Start accepts. Automaton has 2999 states and 3257 transitions. Word has length 286 [2020-07-21 01:19:41,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:19:41,862 INFO L479 AbstractCegarLoop]: Abstraction has 2999 states and 3257 transitions. [2020-07-21 01:19:41,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:19:41,862 INFO L276 IsEmpty]: Start isEmpty. Operand 2999 states and 3257 transitions. [2020-07-21 01:19:41,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-07-21 01:19:41,872 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:19:41,873 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 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, 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] [2020-07-21 01:19:42,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:19:42,086 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:19:42,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:19:42,086 INFO L82 PathProgramCache]: Analyzing trace with hash 530159302, now seen corresponding path program 1 times [2020-07-21 01:19:42,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:19:42,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571244599] [2020-07-21 01:19:42,087 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 01:19:42,307 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:19:42,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:19:42,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 01:19:42,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:19:42,372 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 211 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2020-07-21 01:19:42,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:19:42,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [571244599] [2020-07-21 01:19:42,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:19:42,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:19:42,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293201443] [2020-07-21 01:19:42,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:19:42,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:19:42,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:19:42,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:19:42,375 INFO L87 Difference]: Start difference. First operand 2999 states and 3257 transitions. Second operand 3 states. [2020-07-21 01:19:42,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:19:42,829 INFO L93 Difference]: Finished difference Result 6067 states and 6616 transitions. [2020-07-21 01:19:42,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:19:42,830 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 306 [2020-07-21 01:19:42,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:19:42,841 INFO L225 Difference]: With dead ends: 6067 [2020-07-21 01:19:42,841 INFO L226 Difference]: Without dead ends: 3134 [2020-07-21 01:19:42,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 304 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 01:19:42,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3134 states. [2020-07-21 01:19:42,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3134 to 3134. [2020-07-21 01:19:42,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3134 states. [2020-07-21 01:19:42,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3134 states to 3134 states and 3427 transitions. [2020-07-21 01:19:42,907 INFO L78 Accepts]: Start accepts. Automaton has 3134 states and 3427 transitions. Word has length 306 [2020-07-21 01:19:42,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:19:42,907 INFO L479 AbstractCegarLoop]: Abstraction has 3134 states and 3427 transitions. [2020-07-21 01:19:42,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:19:42,908 INFO L276 IsEmpty]: Start isEmpty. Operand 3134 states and 3427 transitions. [2020-07-21 01:19:42,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-07-21 01:19:42,918 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:19:42,918 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-07-21 01:19:43,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:19:43,132 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:19:43,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:19:43,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1228519189, now seen corresponding path program 1 times [2020-07-21 01:19:43,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:19:43,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1337985215] [2020-07-21 01:19:43,134 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:19:43,361 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:19:43,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:19:43,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 01:19:43,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:19:43,492 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 504 proven. 4 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2020-07-21 01:19:43,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:19:43,639 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 457 proven. 24 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2020-07-21 01:19:43,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1337985215] [2020-07-21 01:19:43,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:19:43,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:19:43,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190042357] [2020-07-21 01:19:43,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:19:43,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:19:43,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:19:43,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:19:43,641 INFO L87 Difference]: Start difference. First operand 3134 states and 3427 transitions. Second operand 7 states. [2020-07-21 01:19:44,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:19:44,661 INFO L93 Difference]: Finished difference Result 6033 states and 6599 transitions. [2020-07-21 01:19:44,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 01:19:44,661 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 327 [2020-07-21 01:19:44,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:19:44,662 INFO L225 Difference]: With dead ends: 6033 [2020-07-21 01:19:44,662 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 01:19:44,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 647 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-07-21 01:19:44,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 01:19:44,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 01:19:44,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 01:19:44,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 01:19:44,674 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 327 [2020-07-21 01:19:44,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:19:44,674 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 01:19:44,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:19:44,675 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 01:19:44,675 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 01:19:44,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:19:44,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 01:19:45,603 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 214 [2020-07-21 01:19:45,822 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 204 [2020-07-21 01:19:47,203 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 222 DAG size of output: 85 [2020-07-21 01:19:48,263 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 232 DAG size of output: 51 [2020-07-21 01:19:49,297 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 222 DAG size of output: 51 [2020-07-21 01:19:49,302 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 01:19:49,302 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a16~0 |old(~a16~0)|) (= ~a7~0 |old(~a7~0)|) (= ~a17~0 |old(~a17~0)|) (<= |old(~a16~0)| ~a16~0) (<= |old(~a8~0)| ~a8~0) (= ~a20~0 |old(~a20~0)|) (= ~a21~0 |old(~a21~0)|)) [2020-07-21 01:19:49,303 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 01:19:49,303 INFO L268 CegarLoopResult]: For program point L333(lines 333 390) no Hoare annotation was computed. [2020-07-21 01:19:49,303 INFO L268 CegarLoopResult]: For program point L102(lines 102 390) no Hoare annotation was computed. [2020-07-21 01:19:49,303 INFO L268 CegarLoopResult]: For program point L565-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,303 INFO L268 CegarLoopResult]: For program point L532-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,304 INFO L268 CegarLoopResult]: For program point L499-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,304 INFO L268 CegarLoopResult]: For program point L466-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,304 INFO L268 CegarLoopResult]: For program point L433-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,304 INFO L268 CegarLoopResult]: For program point L400-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,304 INFO L268 CegarLoopResult]: For program point L268(lines 268 390) no Hoare annotation was computed. [2020-07-21 01:19:49,304 INFO L268 CegarLoopResult]: For program point L136(lines 136 390) no Hoare annotation was computed. [2020-07-21 01:19:49,305 INFO L268 CegarLoopResult]: For program point L566(line 566) no Hoare annotation was computed. [2020-07-21 01:19:49,305 INFO L268 CegarLoopResult]: For program point L533(line 533) no Hoare annotation was computed. [2020-07-21 01:19:49,305 INFO L268 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2020-07-21 01:19:49,305 INFO L268 CegarLoopResult]: For program point L467(line 467) no Hoare annotation was computed. [2020-07-21 01:19:49,305 INFO L268 CegarLoopResult]: For program point L434(line 434) no Hoare annotation was computed. [2020-07-21 01:19:49,305 INFO L268 CegarLoopResult]: For program point L401(line 401) no Hoare annotation was computed. [2020-07-21 01:19:49,305 INFO L268 CegarLoopResult]: For program point L203(lines 203 390) no Hoare annotation was computed. [2020-07-21 01:19:49,305 INFO L268 CegarLoopResult]: For program point L72(lines 72 390) no Hoare annotation was computed. [2020-07-21 01:19:49,305 INFO L268 CegarLoopResult]: For program point L568-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,306 INFO L268 CegarLoopResult]: For program point L535-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,306 INFO L268 CegarLoopResult]: For program point L502-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,306 INFO L268 CegarLoopResult]: For program point L469-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,306 INFO L268 CegarLoopResult]: For program point L436-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,306 INFO L268 CegarLoopResult]: For program point L403-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,306 INFO L268 CegarLoopResult]: For program point L337(lines 337 390) no Hoare annotation was computed. [2020-07-21 01:19:49,306 INFO L268 CegarLoopResult]: For program point L238(lines 238 390) no Hoare annotation was computed. [2020-07-21 01:19:49,306 INFO L268 CegarLoopResult]: For program point L569(line 569) no Hoare annotation was computed. [2020-07-21 01:19:49,307 INFO L268 CegarLoopResult]: For program point L536(line 536) no Hoare annotation was computed. [2020-07-21 01:19:49,307 INFO L268 CegarLoopResult]: For program point L503(line 503) no Hoare annotation was computed. [2020-07-21 01:19:49,307 INFO L268 CegarLoopResult]: For program point L470(line 470) no Hoare annotation was computed. [2020-07-21 01:19:49,307 INFO L268 CegarLoopResult]: For program point L437(line 437) no Hoare annotation was computed. [2020-07-21 01:19:49,307 INFO L268 CegarLoopResult]: For program point L404(line 404) no Hoare annotation was computed. [2020-07-21 01:19:49,307 INFO L268 CegarLoopResult]: For program point L173(lines 173 390) no Hoare annotation was computed. [2020-07-21 01:19:49,307 INFO L268 CegarLoopResult]: For program point L140(lines 140 390) no Hoare annotation was computed. [2020-07-21 01:19:49,307 INFO L268 CegarLoopResult]: For program point L372(lines 372 390) no Hoare annotation was computed. [2020-07-21 01:19:49,308 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 434) no Hoare annotation was computed. [2020-07-21 01:19:49,308 INFO L268 CegarLoopResult]: For program point L306(lines 306 390) no Hoare annotation was computed. [2020-07-21 01:19:49,308 INFO L268 CegarLoopResult]: For program point L273(lines 273 390) no Hoare annotation was computed. [2020-07-21 01:19:49,308 INFO L268 CegarLoopResult]: For program point L108(lines 108 390) no Hoare annotation was computed. [2020-07-21 01:19:49,308 INFO L268 CegarLoopResult]: For program point L571-1(lines 571 573) no Hoare annotation was computed. [2020-07-21 01:19:49,308 INFO L268 CegarLoopResult]: For program point L538-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,308 INFO L268 CegarLoopResult]: For program point L505-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,308 INFO L268 CegarLoopResult]: For program point L472-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,309 INFO L268 CegarLoopResult]: For program point L439-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,309 INFO L268 CegarLoopResult]: For program point L406-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,309 INFO L268 CegarLoopResult]: For program point L208(lines 208 390) no Hoare annotation was computed. [2020-07-21 01:19:49,309 INFO L268 CegarLoopResult]: For program point L43(lines 43 390) no Hoare annotation was computed. [2020-07-21 01:19:49,309 INFO L268 CegarLoopResult]: For program point L572(line 572) no Hoare annotation was computed. [2020-07-21 01:19:49,309 INFO L268 CegarLoopResult]: For program point L539(line 539) no Hoare annotation was computed. [2020-07-21 01:19:49,309 INFO L268 CegarLoopResult]: For program point L506(line 506) no Hoare annotation was computed. [2020-07-21 01:19:49,309 INFO L268 CegarLoopResult]: For program point L473(line 473) no Hoare annotation was computed. [2020-07-21 01:19:49,309 INFO L268 CegarLoopResult]: For program point L440(line 440) no Hoare annotation was computed. [2020-07-21 01:19:49,310 INFO L268 CegarLoopResult]: For program point L407(line 407) no Hoare annotation was computed. [2020-07-21 01:19:49,310 INFO L268 CegarLoopResult]: For program point L144(lines 144 390) no Hoare annotation was computed. [2020-07-21 01:19:49,310 INFO L268 CegarLoopResult]: For program point L541-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,310 INFO L268 CegarLoopResult]: For program point L508-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,310 INFO L268 CegarLoopResult]: For program point L475-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,310 INFO L268 CegarLoopResult]: For program point L442-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,310 INFO L268 CegarLoopResult]: For program point L409-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,310 INFO L268 CegarLoopResult]: For program point L178(lines 178 390) no Hoare annotation was computed. [2020-07-21 01:19:49,311 INFO L268 CegarLoopResult]: For program point L542(line 542) no Hoare annotation was computed. [2020-07-21 01:19:49,311 INFO L268 CegarLoopResult]: For program point L509(line 509) no Hoare annotation was computed. [2020-07-21 01:19:49,311 INFO L268 CegarLoopResult]: For program point L476(line 476) no Hoare annotation was computed. [2020-07-21 01:19:49,311 INFO L268 CegarLoopResult]: For program point L443(line 443) no Hoare annotation was computed. [2020-07-21 01:19:49,311 INFO L268 CegarLoopResult]: For program point L410(line 410) no Hoare annotation was computed. [2020-07-21 01:19:49,311 INFO L268 CegarLoopResult]: For program point L377(lines 377 390) no Hoare annotation was computed. [2020-07-21 01:19:49,311 INFO L268 CegarLoopResult]: For program point L278(lines 278 390) no Hoare annotation was computed. [2020-07-21 01:19:49,311 INFO L268 CegarLoopResult]: For program point L245(lines 245 390) no Hoare annotation was computed. [2020-07-21 01:19:49,312 INFO L268 CegarLoopResult]: For program point L80(lines 80 390) no Hoare annotation was computed. [2020-07-21 01:19:49,312 INFO L268 CegarLoopResult]: For program point L345(lines 345 390) no Hoare annotation was computed. [2020-07-21 01:19:49,312 INFO L268 CegarLoopResult]: For program point L312(lines 312 390) no Hoare annotation was computed. [2020-07-21 01:19:49,312 INFO L268 CegarLoopResult]: For program point L114(lines 114 390) no Hoare annotation was computed. [2020-07-21 01:19:49,312 INFO L268 CegarLoopResult]: For program point L544-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,312 INFO L268 CegarLoopResult]: For program point L511-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,312 INFO L268 CegarLoopResult]: For program point L478-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,312 INFO L268 CegarLoopResult]: For program point L445-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,312 INFO L268 CegarLoopResult]: For program point L412-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,313 INFO L268 CegarLoopResult]: For program point L214(lines 214 390) no Hoare annotation was computed. [2020-07-21 01:19:49,313 INFO L268 CegarLoopResult]: For program point L148(lines 148 390) no Hoare annotation was computed. [2020-07-21 01:19:49,313 INFO L268 CegarLoopResult]: For program point L49(lines 49 390) no Hoare annotation was computed. [2020-07-21 01:19:49,313 INFO L268 CegarLoopResult]: For program point L545(line 545) no Hoare annotation was computed. [2020-07-21 01:19:49,313 INFO L268 CegarLoopResult]: For program point L512(line 512) no Hoare annotation was computed. [2020-07-21 01:19:49,313 INFO L268 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2020-07-21 01:19:49,313 INFO L268 CegarLoopResult]: For program point L446(line 446) no Hoare annotation was computed. [2020-07-21 01:19:49,313 INFO L268 CegarLoopResult]: For program point L413(line 413) no Hoare annotation was computed. [2020-07-21 01:19:49,313 INFO L268 CegarLoopResult]: For program point L84(lines 84 390) no Hoare annotation was computed. [2020-07-21 01:19:49,313 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,313 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,313 INFO L268 CegarLoopResult]: For program point L547-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,313 INFO L268 CegarLoopResult]: For program point L514-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,314 INFO L268 CegarLoopResult]: For program point L481-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,314 INFO L268 CegarLoopResult]: For program point L448-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,314 INFO L268 CegarLoopResult]: For program point L382(lines 382 390) no Hoare annotation was computed. [2020-07-21 01:19:49,314 INFO L268 CegarLoopResult]: For program point L415-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,314 INFO L268 CegarLoopResult]: For program point L316(lines 316 390) no Hoare annotation was computed. [2020-07-21 01:19:49,314 INFO L268 CegarLoopResult]: For program point L250(lines 250 390) no Hoare annotation was computed. [2020-07-21 01:19:49,314 INFO L268 CegarLoopResult]: For program point L548(line 548) no Hoare annotation was computed. [2020-07-21 01:19:49,314 INFO L268 CegarLoopResult]: For program point L515(line 515) no Hoare annotation was computed. [2020-07-21 01:19:49,314 INFO L268 CegarLoopResult]: For program point L482(line 482) no Hoare annotation was computed. [2020-07-21 01:19:49,314 INFO L268 CegarLoopResult]: For program point L449(line 449) no Hoare annotation was computed. [2020-07-21 01:19:49,314 INFO L268 CegarLoopResult]: For program point L416(line 416) no Hoare annotation was computed. [2020-07-21 01:19:49,314 INFO L268 CegarLoopResult]: For program point L218(lines 218 390) no Hoare annotation was computed. [2020-07-21 01:19:49,314 INFO L268 CegarLoopResult]: For program point L152(lines 152 390) no Hoare annotation was computed. [2020-07-21 01:19:49,315 INFO L268 CegarLoopResult]: For program point L119(lines 119 390) no Hoare annotation was computed. [2020-07-21 01:19:49,315 INFO L268 CegarLoopResult]: For program point L318(lines 318 390) no Hoare annotation was computed. [2020-07-21 01:19:49,315 INFO L268 CegarLoopResult]: For program point L186(lines 186 390) no Hoare annotation was computed. [2020-07-21 01:19:49,315 INFO L268 CegarLoopResult]: For program point L54(lines 54 390) no Hoare annotation was computed. [2020-07-21 01:19:49,315 INFO L268 CegarLoopResult]: For program point L550-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,315 INFO L268 CegarLoopResult]: For program point L517-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,315 INFO L268 CegarLoopResult]: For program point L484-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,315 INFO L268 CegarLoopResult]: For program point L451-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,315 INFO L268 CegarLoopResult]: For program point L418-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,315 INFO L268 CegarLoopResult]: For program point L286(lines 286 390) no Hoare annotation was computed. [2020-07-21 01:19:49,315 INFO L268 CegarLoopResult]: For program point L551(line 551) no Hoare annotation was computed. [2020-07-21 01:19:49,315 INFO L268 CegarLoopResult]: For program point L518(line 518) no Hoare annotation was computed. [2020-07-21 01:19:49,315 INFO L268 CegarLoopResult]: For program point L485(line 485) no Hoare annotation was computed. [2020-07-21 01:19:49,316 INFO L268 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2020-07-21 01:19:49,316 INFO L268 CegarLoopResult]: For program point L419(line 419) no Hoare annotation was computed. [2020-07-21 01:19:49,316 INFO L268 CegarLoopResult]: For program point L353(lines 353 390) no Hoare annotation was computed. [2020-07-21 01:19:49,316 INFO L268 CegarLoopResult]: For program point L189(lines 189 390) no Hoare annotation was computed. [2020-07-21 01:19:49,316 INFO L268 CegarLoopResult]: For program point L553-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,316 INFO L268 CegarLoopResult]: For program point L520-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,316 INFO L268 CegarLoopResult]: For program point L487-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,316 INFO L268 CegarLoopResult]: For program point L454-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,316 INFO L268 CegarLoopResult]: For program point L421-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,316 INFO L268 CegarLoopResult]: For program point L355(lines 355 390) no Hoare annotation was computed. [2020-07-21 01:19:49,316 INFO L268 CegarLoopResult]: For program point L256(lines 256 390) no Hoare annotation was computed. [2020-07-21 01:19:49,316 INFO L268 CegarLoopResult]: For program point L223(lines 223 390) no Hoare annotation was computed. [2020-07-21 01:19:49,317 INFO L268 CegarLoopResult]: For program point L124(lines 124 390) no Hoare annotation was computed. [2020-07-21 01:19:49,317 INFO L268 CegarLoopResult]: For program point L554(line 554) no Hoare annotation was computed. [2020-07-21 01:19:49,317 INFO L268 CegarLoopResult]: For program point L521(line 521) no Hoare annotation was computed. [2020-07-21 01:19:49,317 INFO L268 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2020-07-21 01:19:49,317 INFO L268 CegarLoopResult]: For program point L455(line 455) no Hoare annotation was computed. [2020-07-21 01:19:49,317 INFO L268 CegarLoopResult]: For program point L422(line 422) no Hoare annotation was computed. [2020-07-21 01:19:49,317 INFO L268 CegarLoopResult]: For program point L92(lines 92 390) no Hoare annotation was computed. [2020-07-21 01:19:49,317 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 30 575) the Hoare annotation is: (let ((.cse14 (<= ~a16~0 |old(~a16~0)|)) (.cse6 (= ~a7~0 |old(~a7~0)|)) (.cse7 (= ~a17~0 |old(~a17~0)|)) (.cse8 (<= |old(~a8~0)| ~a8~0)) (.cse9 (= ~a20~0 |old(~a20~0)|)) (.cse10 (= ~a21~0 |old(~a21~0)|))) (let ((.cse1 (not (<= |old(~a21~0)| 0))) (.cse2 (and .cse14 .cse6 .cse7 (<= |old(~a16~0)| ~a16~0) .cse8 .cse9 .cse10)) (.cse3 (not (<= 6 |old(~a16~0)|))) (.cse0 (not (= 1 |old(~a20~0)|))) (.cse4 (not (<= |old(~a7~0)| 0))) (.cse11 (not (< |old(~a16~0)| 6))) (.cse12 (not (= 1 |old(~a17~0)|))) (.cse13 (not (<= 5 |old(~a16~0)|))) (.cse5 (not (= 1 |old(~a21~0)|)))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse1 .cse2 (not (<= |old(~a16~0)| 4))) (or .cse4 .cse2 .cse5) (or .cse0 .cse1 (and .cse6 .cse7 .cse8 (<= ~a16~0 5) (< 4 ~a16~0) .cse9 .cse10) .cse11 .cse12 .cse13) (or (not (= 1 |old(~a7~0)|)) (not (<= |old(~a16~0)| 5)) (and .cse14 (= 1 ~a7~0) .cse7 .cse8 .cse10) .cse5) (or .cse4 .cse2 .cse3) (or .cse0 (not (= 15 |old(~a8~0)|)) .cse4 .cse11 .cse12 .cse13 (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|))) .cse5 (= 15 ~a8~0) (not (= 8 ~a12~0)))))) [2020-07-21 01:19:49,317 INFO L268 CegarLoopResult]: For program point L324(lines 324 390) no Hoare annotation was computed. [2020-07-21 01:19:49,317 INFO L268 CegarLoopResult]: For program point L556-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,317 INFO L268 CegarLoopResult]: For program point L523-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,318 INFO L268 CegarLoopResult]: For program point L490-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,318 INFO L268 CegarLoopResult]: For program point L457-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,318 INFO L268 CegarLoopResult]: For program point L391(lines 391 393) no Hoare annotation was computed. [2020-07-21 01:19:49,318 INFO L268 CegarLoopResult]: For program point L424-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,318 INFO L268 CegarLoopResult]: For program point L391-2(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,318 INFO L268 CegarLoopResult]: For program point L292(lines 292 390) no Hoare annotation was computed. [2020-07-21 01:19:49,318 INFO L268 CegarLoopResult]: For program point L160(lines 160 390) no Hoare annotation was computed. [2020-07-21 01:19:49,318 INFO L268 CegarLoopResult]: For program point L557(line 557) no Hoare annotation was computed. [2020-07-21 01:19:49,319 INFO L268 CegarLoopResult]: For program point L524(line 524) no Hoare annotation was computed. [2020-07-21 01:19:49,319 INFO L268 CegarLoopResult]: For program point L491(line 491) no Hoare annotation was computed. [2020-07-21 01:19:49,319 INFO L268 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2020-07-21 01:19:49,319 INFO L268 CegarLoopResult]: For program point L425(line 425) no Hoare annotation was computed. [2020-07-21 01:19:49,319 INFO L268 CegarLoopResult]: For program point L392(line 392) no Hoare annotation was computed. [2020-07-21 01:19:49,319 INFO L268 CegarLoopResult]: For program point L194(lines 194 390) no Hoare annotation was computed. [2020-07-21 01:19:49,319 INFO L268 CegarLoopResult]: For program point L62(lines 62 390) no Hoare annotation was computed. [2020-07-21 01:19:49,319 INFO L268 CegarLoopResult]: For program point L261(lines 261 390) no Hoare annotation was computed. [2020-07-21 01:19:49,319 INFO L268 CegarLoopResult]: For program point L129(lines 129 390) no Hoare annotation was computed. [2020-07-21 01:19:49,320 INFO L268 CegarLoopResult]: For program point L559-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,320 INFO L268 CegarLoopResult]: For program point L526-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,320 INFO L268 CegarLoopResult]: For program point L493-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,320 INFO L268 CegarLoopResult]: For program point L460-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,320 INFO L268 CegarLoopResult]: For program point L427-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,320 INFO L268 CegarLoopResult]: For program point L361(lines 361 390) no Hoare annotation was computed. [2020-07-21 01:19:49,320 INFO L268 CegarLoopResult]: For program point L394-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,320 INFO L268 CegarLoopResult]: For program point L97(lines 97 390) no Hoare annotation was computed. [2020-07-21 01:19:49,320 INFO L268 CegarLoopResult]: For program point L31(lines 31 390) no Hoare annotation was computed. [2020-07-21 01:19:49,320 INFO L268 CegarLoopResult]: For program point L560(line 560) no Hoare annotation was computed. [2020-07-21 01:19:49,321 INFO L268 CegarLoopResult]: For program point L527(line 527) no Hoare annotation was computed. [2020-07-21 01:19:49,321 INFO L268 CegarLoopResult]: For program point L494(line 494) no Hoare annotation was computed. [2020-07-21 01:19:49,321 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-21 01:19:49,321 INFO L268 CegarLoopResult]: For program point L428(line 428) no Hoare annotation was computed. [2020-07-21 01:19:49,321 INFO L268 CegarLoopResult]: For program point L395(line 395) no Hoare annotation was computed. [2020-07-21 01:19:49,321 INFO L268 CegarLoopResult]: For program point L329(lines 329 390) no Hoare annotation was computed. [2020-07-21 01:19:49,321 INFO L268 CegarLoopResult]: For program point L197(lines 197 390) no Hoare annotation was computed. [2020-07-21 01:19:49,321 INFO L268 CegarLoopResult]: For program point L65(lines 65 390) no Hoare annotation was computed. [2020-07-21 01:19:49,321 INFO L268 CegarLoopResult]: For program point L363(lines 363 390) no Hoare annotation was computed. [2020-07-21 01:19:49,322 INFO L268 CegarLoopResult]: For program point L231(lines 231 390) no Hoare annotation was computed. [2020-07-21 01:19:49,322 INFO L268 CegarLoopResult]: For program point L165(lines 165 390) no Hoare annotation was computed. [2020-07-21 01:19:49,322 INFO L268 CegarLoopResult]: For program point L562-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,322 INFO L268 CegarLoopResult]: For program point L529-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,322 INFO L268 CegarLoopResult]: For program point L496-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,322 INFO L268 CegarLoopResult]: For program point L463-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,322 INFO L268 CegarLoopResult]: For program point L430-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,322 INFO L268 CegarLoopResult]: For program point L397-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:19:49,322 INFO L268 CegarLoopResult]: For program point L265(lines 265 390) no Hoare annotation was computed. [2020-07-21 01:19:49,323 INFO L268 CegarLoopResult]: For program point L563(line 563) no Hoare annotation was computed. [2020-07-21 01:19:49,323 INFO L268 CegarLoopResult]: For program point L530(line 530) no Hoare annotation was computed. [2020-07-21 01:19:49,323 INFO L268 CegarLoopResult]: For program point L497(line 497) no Hoare annotation was computed. [2020-07-21 01:19:49,323 INFO L268 CegarLoopResult]: For program point L464(line 464) no Hoare annotation was computed. [2020-07-21 01:19:49,323 INFO L268 CegarLoopResult]: For program point L431(line 431) no Hoare annotation was computed. [2020-07-21 01:19:49,323 INFO L268 CegarLoopResult]: For program point L398(line 398) no Hoare annotation was computed. [2020-07-21 01:19:49,323 INFO L268 CegarLoopResult]: For program point L365(lines 365 390) no Hoare annotation was computed. [2020-07-21 01:19:49,323 INFO L268 CegarLoopResult]: For program point L299(lines 299 390) no Hoare annotation was computed. [2020-07-21 01:19:49,323 INFO L268 CegarLoopResult]: For program point L35(lines 35 390) no Hoare annotation was computed. [2020-07-21 01:19:49,323 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 01:19:49,324 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 01:19:49,324 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 01:19:49,324 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 01:19:49,324 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)| 6)) (not (= 1 |old(~a17~0)|)) (not (<= 5 |old(~a16~0)|)) (not (= 1 |old(~a21~0)|)) (not (= 8 ~a12~0))) [2020-07-21 01:19:49,324 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 577 594) no Hoare annotation was computed. [2020-07-21 01:19:49,324 INFO L264 CegarLoopResult]: At program point L591(line 591) the Hoare annotation is: (let ((.cse1 (<= ~a7~0 0)) (.cse0 (<= 6 ~a16~0)) (.cse2 (= 1 ~a21~0)) (.cse3 (<= ~a21~0 0)) (.cse4 (= 1 ~a20~0))) (or (and .cse0 .cse1) (not (= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (not (< 4 |old(~a16~0)|)) (not (= 1 |old(~a17~0)|)) (and .cse1 .cse2) (and .cse3 .cse0 .cse4) (not (= 1 |old(~a20~0)|)) (and .cse3 (<= ~a16~0 4)) (not (< |old(~a16~0)| 6)) (and (= 1 ~a7~0) (<= ~a16~0 5) .cse2) (and .cse3 (= 1 ~a17~0) .cse4) (not (= 1 |old(~a21~0)|)) (not (= 8 ~a12~0)))) [2020-07-21 01:19:49,324 INFO L268 CegarLoopResult]: For program point L591-1(line 591) no Hoare annotation was computed. [2020-07-21 01:19:49,325 INFO L268 CegarLoopResult]: For program point L588(line 588) no Hoare annotation was computed. [2020-07-21 01:19:49,325 INFO L264 CegarLoopResult]: At program point L583-2(lines 583 593) the Hoare annotation is: (let ((.cse1 (<= ~a7~0 0)) (.cse0 (<= 6 ~a16~0)) (.cse2 (= 1 ~a21~0)) (.cse3 (<= ~a21~0 0)) (.cse4 (= 1 ~a20~0))) (or (and .cse0 .cse1) (not (= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (not (< 4 |old(~a16~0)|)) (not (= 1 |old(~a17~0)|)) (and .cse1 .cse2) (and .cse3 .cse0 .cse4) (not (= 1 |old(~a20~0)|)) (and .cse3 (<= ~a16~0 4)) (not (< |old(~a16~0)| 6)) (and (= 1 ~a7~0) (<= ~a16~0 5) .cse2) (and .cse3 (= 1 ~a17~0) .cse4) (not (= 1 |old(~a21~0)|)) (not (= 8 ~a12~0)))) [2020-07-21 01:19:49,325 INFO L268 CegarLoopResult]: For program point L583-3(lines 577 594) no Hoare annotation was computed. [2020-07-21 01:19:49,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:19:49 BoogieIcfgContainer [2020-07-21 01:19:49,351 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 01:19:49,354 INFO L168 Benchmark]: Toolchain (without parser) took 31141.38 ms. Allocated memory was 137.4 MB in the beginning and 657.5 MB in the end (delta: 520.1 MB). Free memory was 99.6 MB in the beginning and 503.4 MB in the end (delta: -403.8 MB). Peak memory consumption was 535.9 MB. Max. memory is 7.1 GB. [2020-07-21 01:19:49,359 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 137.4 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 01:19:49,360 INFO L168 Benchmark]: CACSL2BoogieTranslator took 784.18 ms. Allocated memory was 137.4 MB in the beginning and 203.9 MB in the end (delta: 66.6 MB). Free memory was 99.2 MB in the beginning and 170.4 MB in the end (delta: -71.2 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. [2020-07-21 01:19:49,365 INFO L168 Benchmark]: Boogie Preprocessor took 106.14 ms. Allocated memory is still 203.9 MB. Free memory was 170.4 MB in the beginning and 165.3 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. [2020-07-21 01:19:49,366 INFO L168 Benchmark]: RCFGBuilder took 1243.91 ms. Allocated memory was 203.9 MB in the beginning and 235.4 MB in the end (delta: 31.5 MB). Free memory was 165.3 MB in the beginning and 179.5 MB in the end (delta: -14.1 MB). Peak memory consumption was 84.5 MB. Max. memory is 7.1 GB. [2020-07-21 01:19:49,367 INFO L168 Benchmark]: TraceAbstraction took 29000.71 ms. Allocated memory was 235.4 MB in the beginning and 657.5 MB in the end (delta: 422.1 MB). Free memory was 179.5 MB in the beginning and 503.4 MB in the end (delta: -324.0 MB). Peak memory consumption was 517.8 MB. Max. memory is 7.1 GB. [2020-07-21 01:19:49,372 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 137.4 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 784.18 ms. Allocated memory was 137.4 MB in the beginning and 203.9 MB in the end (delta: 66.6 MB). Free memory was 99.2 MB in the beginning and 170.4 MB in the end (delta: -71.2 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.14 ms. Allocated memory is still 203.9 MB. Free memory was 170.4 MB in the beginning and 165.3 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1243.91 ms. Allocated memory was 203.9 MB in the beginning and 235.4 MB in the end (delta: 31.5 MB). Free memory was 165.3 MB in the beginning and 179.5 MB in the end (delta: -14.1 MB). Peak memory consumption was 84.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 29000.71 ms. Allocated memory was 235.4 MB in the beginning and 657.5 MB in the end (delta: 422.1 MB). Free memory was 179.5 MB in the beginning and 503.4 MB in the end (delta: -324.0 MB). Peak memory consumption was 517.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 434]: 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: (((((((((((((6 <= a16 && a7 <= 0) || !(15 == \old(a8))) || !(\old(a7) <= 0)) || !(4 < \old(a16))) || !(1 == \old(a17))) || (a7 <= 0 && 1 == a21)) || ((a21 <= 0 && 6 <= a16) && 1 == a20)) || !(1 == \old(a20))) || (a21 <= 0 && a16 <= 4)) || !(\old(a16) < 6)) || ((1 == a7 && a16 <= 5) && 1 == a21)) || ((a21 <= 0 && 1 == a17) && 1 == a20)) || !(1 == \old(a21))) || !(8 == a12) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 24.4s, OverallIterations: 13, TraceHistogramMax: 8, AutomataDifference: 13.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 771 SDtfs, 6541 SDslu, 519 SDs, 0 SdLazy, 9836 SolverSat, 1374 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4345 GetRequests, 4234 SyntacticMatches, 15 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3134occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 13 MinimizatonAttempts, 2598 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 203 PreInvPairs, 253 NumberOfFragments, 527 HoareAnnotationTreeSize, 203 FomulaSimplifications, 8249 FormulaSimplificationTreeSizeReduction, 0.9s HoareSimplificationTime, 7 FomulaSimplificationsInter, 35608 FormulaSimplificationTreeSizeReductionInter, 3.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 2398 NumberOfCodeBlocks, 1508 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 4272 ConstructedInterpolants, 0 QuantifiedInterpolants, 2474158 SizeOfPredicates, 52 NumberOfNonLiveVariables, 5671 ConjunctsInSsa, 173 ConjunctsInUnsatCore, 23 InterpolantComputations, 4 PerfectInterpolantSequences, 4760/5033 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...