/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/Problem10_label32.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 01:27:37,864 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-21 01:27:37,890 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 01:27:37,892 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 01:27:37,893 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 01:27:37,894 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 01:27:37,894 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 01:27:37,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 01:27:37,897 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 01:27:37,900 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 01:27:37,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 01:27:37,905 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 01:27:37,906 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 01:27:37,910 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 01:27:37,913 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 01:27:37,920 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 01:27:37,921 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 01:27:37,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 01:27:37,923 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 01:27:37,938 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 01:27:37,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 01:27:37,939 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 01:27:37,940 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 01:27:37,940 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 01:27:37,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 01:27:37,940 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 01:27:37,940 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 01:27:37,941 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 01:27:37,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 01:27:37,941 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 01:27:37,941 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 01:27:37,941 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 01:27:37,942 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 01:27:37,942 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 01:27:37,942 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 01:27:37,942 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 01:27:37,942 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 01:27:37,943 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 01:27:37,943 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 01:27:37,943 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 01:27:37,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 01:27:37,943 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 01:27:37,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 01:27:37,944 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 01:27:37,944 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 01:27:37,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:37,944 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 01:27:37,945 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 01:27:37,945 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 01:27:38,231 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 01:27:38,249 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 01:27:38,253 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 01:27:38,255 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 01:27:38,255 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 01:27:38,256 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label32.c [2020-07-21 01:27:38,342 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4dd50f05/a7ae6dbda63547cba85609da62121957/FLAG531c1e658 [2020-07-21 01:27:38,970 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 01:27:38,978 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label32.c [2020-07-21 01:27:38,993 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4dd50f05/a7ae6dbda63547cba85609da62121957/FLAG531c1e658 [2020-07-21 01:27:39,248 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4dd50f05/a7ae6dbda63547cba85609da62121957 [2020-07-21 01:27:39,260 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 01:27:39,264 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 01:27:39,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 01:27:39,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 01:27:39,271 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 01:27:39,272 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:27:39" (1/1) ... [2020-07-21 01:27:39,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1340591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:39, skipping insertion in model container [2020-07-21 01:27:39,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:27:39" (1/1) ... [2020-07-21 01:27:39,287 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 01:27:39,332 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 01:27:39,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:27:39,881 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 01:27:40,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:27:40,083 INFO L208 MainTranslator]: Completed translation [2020-07-21 01:27:40,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:40 WrapperNode [2020-07-21 01:27:40,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 01:27:40,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 01:27:40,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 01:27:40,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 01:27:40,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:40" (1/1) ... [2020-07-21 01:27:40,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:40" (1/1) ... [2020-07-21 01:27:40,114 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:40" (1/1) ... [2020-07-21 01:27:40,115 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:40" (1/1) ... [2020-07-21 01:27:40,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:40" (1/1) ... [2020-07-21 01:27:40,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:40" (1/1) ... [2020-07-21 01:27:40,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:40" (1/1) ... [2020-07-21 01:27:40,187 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 01:27:40,188 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 01:27:40,188 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 01:27:40,188 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 01:27:40,189 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:40" (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 01:27:40,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 01:27:40,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 01:27:40,273 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 01:27:40,273 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 01:27:40,274 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 01:27:40,274 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 01:27:40,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 01:27:40,275 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 01:27:40,275 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 01:27:40,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 01:27:40,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 01:27:41,696 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 01:27:41,696 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 01:27:41,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:27:41 BoogieIcfgContainer [2020-07-21 01:27:41,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 01:27:41,706 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 01:27:41,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 01:27:41,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 01:27:41,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:27:39" (1/3) ... [2020-07-21 01:27:41,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cd0f4d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:27:41, skipping insertion in model container [2020-07-21 01:27:41,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:40" (2/3) ... [2020-07-21 01:27:41,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cd0f4d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:27:41, skipping insertion in model container [2020-07-21 01:27:41,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:27:41" (3/3) ... [2020-07-21 01:27:41,717 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label32.c [2020-07-21 01:27:41,734 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 01:27:41,745 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 01:27:41,765 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 01:27:41,803 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 01:27:41,803 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 01:27:41,804 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 01:27:41,804 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 01:27:41,804 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 01:27:41,804 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 01:27:41,805 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 01:27:41,805 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 01:27:41,831 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-07-21 01:27:41,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-21 01:27:41,841 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:27:41,842 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] [2020-07-21 01:27:41,843 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:27:41,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:27:41,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1877810762, now seen corresponding path program 1 times [2020-07-21 01:27:41,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:27:41,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109207606] [2020-07-21 01:27:41,868 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 01:27:42,033 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:27:42,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:27:42,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 01:27:42,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:27:42,137 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 01:27:42,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:27:42,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109207606] [2020-07-21 01:27:42,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:27:42,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:27:42,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299753660] [2020-07-21 01:27:42,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:27:42,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:27:42,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:27:42,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:27:42,167 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2020-07-21 01:27:43,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:27:43,396 INFO L93 Difference]: Finished difference Result 571 states and 989 transitions. [2020-07-21 01:27:43,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:27:43,398 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-07-21 01:27:43,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:27:43,416 INFO L225 Difference]: With dead ends: 571 [2020-07-21 01:27:43,417 INFO L226 Difference]: Without dead ends: 294 [2020-07-21 01:27:43,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 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 01:27:43,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-07-21 01:27:43,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2020-07-21 01:27:43,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-07-21 01:27:43,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 391 transitions. [2020-07-21 01:27:43,504 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 391 transitions. Word has length 31 [2020-07-21 01:27:43,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:27:43,505 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 391 transitions. [2020-07-21 01:27:43,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:27:43,505 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 391 transitions. [2020-07-21 01:27:43,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-07-21 01:27:43,510 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:27:43,511 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:27:43,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:43,726 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:27:43,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:27:43,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1943210670, now seen corresponding path program 1 times [2020-07-21 01:27:43,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:27:43,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064197567] [2020-07-21 01:27:43,728 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 01:27:43,822 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:27:43,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:27:43,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:27:43,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:27:43,862 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:27:43,862 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:27:43,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064197567] [2020-07-21 01:27:43,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:27:43,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:27:43,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313466509] [2020-07-21 01:27:43,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:27:43,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:27:43,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:27:43,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:27:43,867 INFO L87 Difference]: Start difference. First operand 294 states and 391 transitions. Second operand 3 states. [2020-07-21 01:27:44,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:27:44,593 INFO L93 Difference]: Finished difference Result 725 states and 1001 transitions. [2020-07-21 01:27:44,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:27:44,594 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 101 [2020-07-21 01:27:44,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:27:44,599 INFO L225 Difference]: With dead ends: 725 [2020-07-21 01:27:44,600 INFO L226 Difference]: Without dead ends: 437 [2020-07-21 01:27:44,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 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 01:27:44,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2020-07-21 01:27:44,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 437. [2020-07-21 01:27:44,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-07-21 01:27:44,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 593 transitions. [2020-07-21 01:27:44,633 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 593 transitions. Word has length 101 [2020-07-21 01:27:44,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:27:44,634 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 593 transitions. [2020-07-21 01:27:44,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:27:44,634 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 593 transitions. [2020-07-21 01:27:44,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-07-21 01:27:44,638 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:27:44,639 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:27:44,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:44,852 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:27:44,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:27:44,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1649984501, now seen corresponding path program 1 times [2020-07-21 01:27:44,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:27:44,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1075549278] [2020-07-21 01:27:44,855 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 01:27:44,936 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:27:44,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:27:44,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 01:27:44,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:27:44,987 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:27:44,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:27:44,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1075549278] [2020-07-21 01:27:44,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:27:44,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 01:27:44,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060725248] [2020-07-21 01:27:44,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 01:27:44,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:27:44,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 01:27:44,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 01:27:44,990 INFO L87 Difference]: Start difference. First operand 437 states and 593 transitions. Second operand 5 states. [2020-07-21 01:27:45,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:27:45,949 INFO L93 Difference]: Finished difference Result 1027 states and 1372 transitions. [2020-07-21 01:27:45,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 01:27:45,957 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-07-21 01:27:45,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:27:45,961 INFO L225 Difference]: With dead ends: 1027 [2020-07-21 01:27:45,962 INFO L226 Difference]: Without dead ends: 596 [2020-07-21 01:27:45,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:27:45,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2020-07-21 01:27:46,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 590. [2020-07-21 01:27:46,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-07-21 01:27:46,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 764 transitions. [2020-07-21 01:27:46,004 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 764 transitions. Word has length 108 [2020-07-21 01:27:46,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:27:46,004 INFO L479 AbstractCegarLoop]: Abstraction has 590 states and 764 transitions. [2020-07-21 01:27:46,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 01:27:46,005 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 764 transitions. [2020-07-21 01:27:46,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-07-21 01:27:46,010 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:27:46,010 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:27:46,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:46,224 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:27:46,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:27:46,225 INFO L82 PathProgramCache]: Analyzing trace with hash -2011164487, now seen corresponding path program 1 times [2020-07-21 01:27:46,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:27:46,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67925367] [2020-07-21 01:27:46,226 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 01:27:46,314 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:27:46,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:27:46,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 01:27:46,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:27:46,370 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:27:46,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:27:46,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67925367] [2020-07-21 01:27:46,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:27:46,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 01:27:46,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391751501] [2020-07-21 01:27:46,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 01:27:46,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:27:46,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 01:27:46,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 01:27:46,374 INFO L87 Difference]: Start difference. First operand 590 states and 764 transitions. Second operand 5 states. [2020-07-21 01:27:47,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:27:47,380 INFO L93 Difference]: Finished difference Result 1351 states and 1835 transitions. [2020-07-21 01:27:47,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 01:27:47,382 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-07-21 01:27:47,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:27:47,397 INFO L225 Difference]: With dead ends: 1351 [2020-07-21 01:27:47,398 INFO L226 Difference]: Without dead ends: 910 [2020-07-21 01:27:47,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-21 01:27:47,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2020-07-21 01:27:47,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 894. [2020-07-21 01:27:47,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 894 states. [2020-07-21 01:27:47,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1093 transitions. [2020-07-21 01:27:47,456 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1093 transitions. Word has length 126 [2020-07-21 01:27:47,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:27:47,457 INFO L479 AbstractCegarLoop]: Abstraction has 894 states and 1093 transitions. [2020-07-21 01:27:47,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 01:27:47,457 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1093 transitions. [2020-07-21 01:27:47,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-07-21 01:27:47,474 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:27:47,475 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:27:47,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:47,679 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:27:47,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:27:47,680 INFO L82 PathProgramCache]: Analyzing trace with hash -2040836647, now seen corresponding path program 1 times [2020-07-21 01:27:47,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:27:47,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [113651754] [2020-07-21 01:27:47,681 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 01:27:47,796 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:27:47,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:27:47,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 01:27:47,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:27:47,892 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-07-21 01:27:47,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:27:48,071 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-07-21 01:27:48,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [113651754] [2020-07-21 01:27:48,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-21 01:27:48,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2020-07-21 01:27:48,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134060271] [2020-07-21 01:27:48,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 01:27:48,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:27:48,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 01:27:48,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 01:27:48,074 INFO L87 Difference]: Start difference. First operand 894 states and 1093 transitions. Second operand 4 states. [2020-07-21 01:27:48,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:27:48,809 INFO L93 Difference]: Finished difference Result 1335 states and 1649 transitions. [2020-07-21 01:27:48,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 01:27:48,811 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 178 [2020-07-21 01:27:48,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:27:48,818 INFO L225 Difference]: With dead ends: 1335 [2020-07-21 01:27:48,818 INFO L226 Difference]: Without dead ends: 1333 [2020-07-21 01:27:48,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 01:27:48,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2020-07-21 01:27:48,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 1188. [2020-07-21 01:27:48,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1188 states. [2020-07-21 01:27:48,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1487 transitions. [2020-07-21 01:27:48,857 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1487 transitions. Word has length 178 [2020-07-21 01:27:48,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:27:48,857 INFO L479 AbstractCegarLoop]: Abstraction has 1188 states and 1487 transitions. [2020-07-21 01:27:48,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 01:27:48,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1487 transitions. [2020-07-21 01:27:48,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-07-21 01:27:48,863 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:27:48,864 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-07-21 01:27:49,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:49,079 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:27:49,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:27:49,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1235452698, now seen corresponding path program 1 times [2020-07-21 01:27:49,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:27:49,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705936132] [2020-07-21 01:27:49,082 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 01:27:49,218 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:27:49,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:27:49,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:27:49,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:27:49,250 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-21 01:27:49,250 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:27:49,334 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 262 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-07-21 01:27:49,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:27:49,413 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:27:49,414 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:27:49,418 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 1] term [2020-07-21 01:27:49,418 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:27:49,596 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 144 proven. 77 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-07-21 01:27:49,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705936132] [2020-07-21 01:27:49,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:27:49,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 01:27:49,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383671915] [2020-07-21 01:27:49,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 01:27:49,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:27:49,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 01:27:49,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 01:27:49,599 INFO L87 Difference]: Start difference. First operand 1188 states and 1487 transitions. Second operand 6 states. [2020-07-21 01:27:50,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:27:50,710 INFO L93 Difference]: Finished difference Result 2567 states and 3333 transitions. [2020-07-21 01:27:50,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 01:27:50,711 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 297 [2020-07-21 01:27:50,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:27:50,721 INFO L225 Difference]: With dead ends: 2567 [2020-07-21 01:27:50,721 INFO L226 Difference]: Without dead ends: 1528 [2020-07-21 01:27:50,724 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 590 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-21 01:27:50,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2020-07-21 01:27:50,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1200. [2020-07-21 01:27:50,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1200 states. [2020-07-21 01:27:50,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 1428 transitions. [2020-07-21 01:27:50,813 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 1428 transitions. Word has length 297 [2020-07-21 01:27:50,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:27:50,813 INFO L479 AbstractCegarLoop]: Abstraction has 1200 states and 1428 transitions. [2020-07-21 01:27:50,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 01:27:50,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 1428 transitions. [2020-07-21 01:27:50,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-07-21 01:27:50,820 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:27:50,821 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-07-21 01:27:51,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:51,035 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:27:51,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:27:51,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1849632851, now seen corresponding path program 1 times [2020-07-21 01:27:51,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:27:51,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124107459] [2020-07-21 01:27:51,037 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 01:27:51,150 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:27:51,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:27:51,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 20 conjunts are in the unsatisfiable core [2020-07-21 01:27:51,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:27:51,373 INFO L501 QuantifierPusher]: Distributing 6 conjuncts over 3 disjuncts [2020-07-21 01:27:51,374 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 01:27:51,374 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 01:27:51,376 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 01:27:51,378 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 01:27:51,380 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 01:27:51,382 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 01:27:51,383 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 01:27:51,617 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 278 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-07-21 01:27:51,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:27:51,917 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 2 conjuncts [2020-07-21 01:27:51,919 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:27:52,232 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 151 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-07-21 01:27:52,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124107459] [2020-07-21 01:27:52,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:27:52,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2020-07-21 01:27:52,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532902818] [2020-07-21 01:27:52,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-21 01:27:52,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:27:52,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-21 01:27:52,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-07-21 01:27:52,236 INFO L87 Difference]: Start difference. First operand 1200 states and 1428 transitions. Second operand 15 states. [2020-07-21 01:27:53,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:27:53,892 INFO L93 Difference]: Finished difference Result 2457 states and 2990 transitions. [2020-07-21 01:27:53,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-21 01:27:53,893 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 306 [2020-07-21 01:27:53,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:27:53,901 INFO L225 Difference]: With dead ends: 2457 [2020-07-21 01:27:53,901 INFO L226 Difference]: Without dead ends: 1347 [2020-07-21 01:27:53,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 621 GetRequests, 601 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-07-21 01:27:53,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1347 states. [2020-07-21 01:27:53,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1347 to 1202. [2020-07-21 01:27:53,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1202 states. [2020-07-21 01:27:53,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 1426 transitions. [2020-07-21 01:27:53,941 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 1426 transitions. Word has length 306 [2020-07-21 01:27:53,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:27:53,941 INFO L479 AbstractCegarLoop]: Abstraction has 1202 states and 1426 transitions. [2020-07-21 01:27:53,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-21 01:27:53,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 1426 transitions. [2020-07-21 01:27:53,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-07-21 01:27:53,948 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:27:53,949 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:27:54,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:54,164 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:27:54,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:27:54,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1017830091, now seen corresponding path program 1 times [2020-07-21 01:27:54,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:27:54,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839904943] [2020-07-21 01:27:54,166 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 01:27:54,319 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:27:54,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:27:54,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-21 01:27:54,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:27:54,348 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:27:54,351 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 01:27:54,354 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:27:54,356 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 01:27:54,359 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 01:27:54,364 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 01:27:54,367 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:27:54,373 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 01:27:54,374 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 01:27:54,377 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 01:27:54,383 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 01:27:54,385 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 01:27:54,386 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 01:27:54,393 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:27:54,395 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:27:54,402 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:27:54,404 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 01:27:54,405 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:27:54,407 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 01:27:54,409 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 01:27:54,410 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:27:54,412 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 01:27:54,412 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:27:54,413 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:27:54,417 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:27:54,423 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 01:28:06,883 WARN L193 SmtUtils]: Spent 12.39 s on a formula simplification. DAG size of input: 64 DAG size of output: 34 [2020-07-21 01:28:06,923 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 01:28:07,030 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-21 01:28:07,031 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:28:07,031 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:28:07,060 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:28:07,209 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-07-21 01:28:07,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:28:07,302 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:28:07,303 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:28:07,304 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:28:07,305 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:28:07,324 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:28:07,325 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:28:07,419 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:28:07,421 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:28:07,421 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:28:07,422 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:28:07,424 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:28:07,425 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:28:07,425 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:28:07,426 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:28:07,427 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:28:07,428 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:28:07,429 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:28:07,430 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:28:07,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839904943] [2020-07-21 01:28:07,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 01:28:07,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-07-21 01:28:07,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510706207] [2020-07-21 01:28:07,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 01:28:07,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:28:07,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 01:28:07,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-07-21 01:28:07,506 INFO L87 Difference]: Start difference. First operand 1202 states and 1426 transitions. Second operand 8 states. [2020-07-21 01:30:41,082 WARN L193 SmtUtils]: Spent 12.45 s on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2020-07-21 01:31:02,811 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 27 [2020-07-21 01:31:09,278 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 25 [2020-07-21 01:31:57,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:31:57,604 INFO L93 Difference]: Finished difference Result 3596 states and 4506 transitions. [2020-07-21 01:31:57,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-21 01:31:57,610 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 342 [2020-07-21 01:31:57,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:31:57,626 INFO L225 Difference]: With dead ends: 3596 [2020-07-21 01:31:57,626 INFO L226 Difference]: Without dead ends: 2543 [2020-07-21 01:31:57,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 553 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 27.7s TimeCoverageRelationStatistics Valid=149, Invalid=312, Unknown=1, NotChecked=0, Total=462 [2020-07-21 01:31:57,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2543 states. [2020-07-21 01:31:57,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2543 to 2531. [2020-07-21 01:31:57,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2531 states. [2020-07-21 01:31:57,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2531 states to 2531 states and 3051 transitions. [2020-07-21 01:31:57,710 INFO L78 Accepts]: Start accepts. Automaton has 2531 states and 3051 transitions. Word has length 342 [2020-07-21 01:31:57,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:31:57,711 INFO L479 AbstractCegarLoop]: Abstraction has 2531 states and 3051 transitions. [2020-07-21 01:31:57,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 01:31:57,711 INFO L276 IsEmpty]: Start isEmpty. Operand 2531 states and 3051 transitions. [2020-07-21 01:31:57,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-07-21 01:31:57,720 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:31:57,721 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-07-21 01:31:57,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:31:57,922 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:31:57,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:31:57,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1612364689, now seen corresponding path program 1 times [2020-07-21 01:31:57,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:31:57,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757994664] [2020-07-21 01:31:57,924 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 01:31:58,154 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:31:58,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:31:58,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:31:58,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:31:58,264 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2020-07-21 01:31:58,265 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:31:58,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757994664] [2020-07-21 01:31:58,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:31:58,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:31:58,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204575716] [2020-07-21 01:31:58,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:31:58,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:31:58,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:31:58,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:31:58,268 INFO L87 Difference]: Start difference. First operand 2531 states and 3051 transitions. Second operand 3 states. [2020-07-21 01:32:00,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:32:00,296 INFO L93 Difference]: Finished difference Result 5491 states and 6701 transitions. [2020-07-21 01:32:00,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:32:00,305 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 356 [2020-07-21 01:32:00,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:32:00,322 INFO L225 Difference]: With dead ends: 5491 [2020-07-21 01:32:00,322 INFO L226 Difference]: Without dead ends: 3109 [2020-07-21 01:32:00,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 354 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 01:32:00,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3109 states. [2020-07-21 01:32:00,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3109 to 2964. [2020-07-21 01:32:00,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2964 states. [2020-07-21 01:32:00,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2964 states to 2964 states and 3557 transitions. [2020-07-21 01:32:00,425 INFO L78 Accepts]: Start accepts. Automaton has 2964 states and 3557 transitions. Word has length 356 [2020-07-21 01:32:00,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:32:00,426 INFO L479 AbstractCegarLoop]: Abstraction has 2964 states and 3557 transitions. [2020-07-21 01:32:00,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:32:00,426 INFO L276 IsEmpty]: Start isEmpty. Operand 2964 states and 3557 transitions. [2020-07-21 01:32:00,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2020-07-21 01:32:00,437 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:32:00,437 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 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 01:32:00,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:32:00,651 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:32:00,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:32:00,652 INFO L82 PathProgramCache]: Analyzing trace with hash 2056378726, now seen corresponding path program 1 times [2020-07-21 01:32:00,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:32:00,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379277585] [2020-07-21 01:32:00,653 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 01:32:00,851 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:32:00,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:32:00,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:32:00,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:32:00,963 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2020-07-21 01:32:00,963 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:32:00,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379277585] [2020-07-21 01:32:00,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:32:00,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:32:00,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819167291] [2020-07-21 01:32:00,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:32:00,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:32:00,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:32:00,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:32:00,966 INFO L87 Difference]: Start difference. First operand 2964 states and 3557 transitions. Second operand 3 states. [2020-07-21 01:32:02,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:32:02,765 INFO L93 Difference]: Finished difference Result 6063 states and 7282 transitions. [2020-07-21 01:32:02,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:32:02,767 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 361 [2020-07-21 01:32:02,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:32:02,769 INFO L225 Difference]: With dead ends: 6063 [2020-07-21 01:32:02,769 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 01:32:02,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 359 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 01:32:02,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 01:32:02,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 01:32:02,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 01:32:02,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 01:32:02,782 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 361 [2020-07-21 01:32:02,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:32:02,782 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 01:32:02,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:32:02,783 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 01:32:02,783 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 01:32:02,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:32:03,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 01:32:03,815 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 30 [2020-07-21 01:32:05,297 WARN L193 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 168 DAG size of output: 39 [2020-07-21 01:32:05,458 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 30 [2020-07-21 01:32:06,454 WARN L193 SmtUtils]: Spent 993.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 35 [2020-07-21 01:32:07,373 WARN L193 SmtUtils]: Spent 913.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 35 [2020-07-21 01:32:07,380 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 01:32:07,380 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (or (= 1 ~a10~0) (not (= 1 |old(~a10~0)|)) (not (= 0 ~a12~0)) (not (= 14 ~a4~0)) (not (= 8 |old(~a19~0)|))) (or (< 7 ~a19~0) (< |old(~a19~0)| 8)) (<= |old(~a10~0)| ~a10~0) (<= ~a19~0 |old(~a19~0)|) (= ~a1~0 |old(~a1~0)|)) [2020-07-21 01:32:07,381 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 01:32:07,381 INFO L268 CegarLoopResult]: For program point L465(lines 465 572) no Hoare annotation was computed. [2020-07-21 01:32:07,381 INFO L268 CegarLoopResult]: For program point L201-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,381 INFO L268 CegarLoopResult]: For program point L168-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,381 INFO L268 CegarLoopResult]: For program point L135-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,381 INFO L268 CegarLoopResult]: For program point L102-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,381 INFO L268 CegarLoopResult]: For program point L69-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,381 INFO L268 CegarLoopResult]: For program point L36-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,381 INFO L268 CegarLoopResult]: For program point L499(lines 499 572) no Hoare annotation was computed. [2020-07-21 01:32:07,382 INFO L268 CegarLoopResult]: For program point L301(lines 301 572) no Hoare annotation was computed. [2020-07-21 01:32:07,382 INFO L268 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2020-07-21 01:32:07,382 INFO L268 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2020-07-21 01:32:07,382 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-07-21 01:32:07,382 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-07-21 01:32:07,382 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-07-21 01:32:07,382 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-07-21 01:32:07,382 INFO L268 CegarLoopResult]: For program point L335(lines 335 572) no Hoare annotation was computed. [2020-07-21 01:32:07,383 INFO L268 CegarLoopResult]: For program point L236(lines 236 572) no Hoare annotation was computed. [2020-07-21 01:32:07,383 INFO L268 CegarLoopResult]: For program point L534(lines 534 572) no Hoare annotation was computed. [2020-07-21 01:32:07,383 INFO L268 CegarLoopResult]: For program point L171-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,383 INFO L268 CegarLoopResult]: For program point L138-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,383 INFO L268 CegarLoopResult]: For program point L105-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,383 INFO L268 CegarLoopResult]: For program point L72-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,383 INFO L268 CegarLoopResult]: For program point L39-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,383 INFO L268 CegarLoopResult]: For program point L436(lines 436 572) no Hoare annotation was computed. [2020-07-21 01:32:07,384 INFO L268 CegarLoopResult]: For program point L403(lines 403 572) no Hoare annotation was computed. [2020-07-21 01:32:07,384 INFO L268 CegarLoopResult]: For program point L370(lines 370 572) no Hoare annotation was computed. [2020-07-21 01:32:07,384 INFO L268 CegarLoopResult]: For program point L271(lines 271 572) no Hoare annotation was computed. [2020-07-21 01:32:07,384 INFO L268 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2020-07-21 01:32:07,384 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-07-21 01:32:07,384 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-07-21 01:32:07,384 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-07-21 01:32:07,384 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-07-21 01:32:07,385 INFO L268 CegarLoopResult]: For program point L569(lines 569 572) no Hoare annotation was computed. [2020-07-21 01:32:07,385 INFO L268 CegarLoopResult]: For program point L239(lines 239 572) no Hoare annotation was computed. [2020-07-21 01:32:07,385 INFO L268 CegarLoopResult]: For program point L504(lines 504 572) no Hoare annotation was computed. [2020-07-21 01:32:07,385 INFO L268 CegarLoopResult]: For program point L471(lines 471 572) no Hoare annotation was computed. [2020-07-21 01:32:07,385 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 79) no Hoare annotation was computed. [2020-07-21 01:32:07,385 INFO L268 CegarLoopResult]: For program point L306(lines 306 572) no Hoare annotation was computed. [2020-07-21 01:32:07,386 INFO L268 CegarLoopResult]: For program point L174-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,386 INFO L268 CegarLoopResult]: For program point L141-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,386 INFO L268 CegarLoopResult]: For program point L108-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,386 INFO L268 CegarLoopResult]: For program point L75-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,386 INFO L268 CegarLoopResult]: For program point L42-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,386 INFO L268 CegarLoopResult]: For program point L340(lines 340 572) no Hoare annotation was computed. [2020-07-21 01:32:07,386 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-21 01:32:07,386 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-07-21 01:32:07,387 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-07-21 01:32:07,387 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-07-21 01:32:07,387 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-07-21 01:32:07,387 INFO L268 CegarLoopResult]: For program point L540(lines 540 572) no Hoare annotation was computed. [2020-07-21 01:32:07,387 INFO L268 CegarLoopResult]: For program point L408(lines 408 572) no Hoare annotation was computed. [2020-07-21 01:32:07,387 INFO L268 CegarLoopResult]: For program point L375(lines 375 572) no Hoare annotation was computed. [2020-07-21 01:32:07,387 INFO L268 CegarLoopResult]: For program point L210(lines 210 572) no Hoare annotation was computed. [2020-07-21 01:32:07,387 INFO L268 CegarLoopResult]: For program point L177-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,388 INFO L268 CegarLoopResult]: For program point L144-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,388 INFO L268 CegarLoopResult]: For program point L111-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,388 INFO L268 CegarLoopResult]: For program point L78-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,388 INFO L268 CegarLoopResult]: For program point L45-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,388 INFO L268 CegarLoopResult]: For program point L442(lines 442 572) no Hoare annotation was computed. [2020-07-21 01:32:07,388 INFO L268 CegarLoopResult]: For program point L277(lines 277 572) no Hoare annotation was computed. [2020-07-21 01:32:07,388 INFO L268 CegarLoopResult]: For program point L244(lines 244 572) no Hoare annotation was computed. [2020-07-21 01:32:07,388 INFO L268 CegarLoopResult]: For program point L178(line 178) no Hoare annotation was computed. [2020-07-21 01:32:07,388 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-07-21 01:32:07,389 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-07-21 01:32:07,389 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-07-21 01:32:07,389 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-21 01:32:07,389 INFO L268 CegarLoopResult]: For program point L509(lines 509 572) no Hoare annotation was computed. [2020-07-21 01:32:07,389 INFO L268 CegarLoopResult]: For program point L476(lines 476 572) no Hoare annotation was computed. [2020-07-21 01:32:07,389 INFO L268 CegarLoopResult]: For program point L378(lines 378 572) no Hoare annotation was computed. [2020-07-21 01:32:07,389 INFO L268 CegarLoopResult]: For program point L345(lines 345 572) no Hoare annotation was computed. [2020-07-21 01:32:07,389 INFO L268 CegarLoopResult]: For program point L312(lines 312 572) no Hoare annotation was computed. [2020-07-21 01:32:07,390 INFO L268 CegarLoopResult]: For program point L180-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,390 INFO L268 CegarLoopResult]: For program point L147-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,390 INFO L268 CegarLoopResult]: For program point L114-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,390 INFO L268 CegarLoopResult]: For program point L81-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,390 INFO L268 CegarLoopResult]: For program point L48-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,390 INFO L268 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2020-07-21 01:32:07,390 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-07-21 01:32:07,390 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-21 01:32:07,390 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-07-21 01:32:07,391 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-07-21 01:32:07,391 INFO L268 CegarLoopResult]: For program point L545(lines 545 572) no Hoare annotation was computed. [2020-07-21 01:32:07,391 INFO L268 CegarLoopResult]: For program point L215(lines 215 572) no Hoare annotation was computed. [2020-07-21 01:32:07,391 INFO L268 CegarLoopResult]: For program point L414(lines 414 572) no Hoare annotation was computed. [2020-07-21 01:32:07,391 INFO L268 CegarLoopResult]: For program point L249(lines 249 572) no Hoare annotation was computed. [2020-07-21 01:32:07,391 INFO L268 CegarLoopResult]: For program point L183-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,391 INFO L268 CegarLoopResult]: For program point L150-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,391 INFO L268 CegarLoopResult]: For program point L117-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,392 INFO L268 CegarLoopResult]: For program point L84-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,392 INFO L268 CegarLoopResult]: For program point L51-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,392 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,392 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,392 INFO L268 CegarLoopResult]: For program point L514(lines 514 572) no Hoare annotation was computed. [2020-07-21 01:32:07,392 INFO L268 CegarLoopResult]: For program point L481(lines 481 572) no Hoare annotation was computed. [2020-07-21 01:32:07,392 INFO L268 CegarLoopResult]: For program point L448(lines 448 572) no Hoare annotation was computed. [2020-07-21 01:32:07,392 INFO L268 CegarLoopResult]: For program point L283(lines 283 572) no Hoare annotation was computed. [2020-07-21 01:32:07,392 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-07-21 01:32:07,393 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-07-21 01:32:07,393 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-07-21 01:32:07,393 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-07-21 01:32:07,393 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-07-21 01:32:07,393 INFO L268 CegarLoopResult]: For program point L548(lines 548 572) no Hoare annotation was computed. [2020-07-21 01:32:07,393 INFO L268 CegarLoopResult]: For program point L383(lines 383 572) no Hoare annotation was computed. [2020-07-21 01:32:07,393 INFO L268 CegarLoopResult]: For program point L317(lines 317 572) no Hoare annotation was computed. [2020-07-21 01:32:07,393 INFO L268 CegarLoopResult]: For program point L351(lines 351 572) no Hoare annotation was computed. [2020-07-21 01:32:07,393 INFO L268 CegarLoopResult]: For program point L186-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,394 INFO L268 CegarLoopResult]: For program point L153-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,394 INFO L268 CegarLoopResult]: For program point L120-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,394 INFO L268 CegarLoopResult]: For program point L87-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,394 INFO L268 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-07-21 01:32:07,394 INFO L268 CegarLoopResult]: For program point L54-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,394 INFO L268 CegarLoopResult]: For program point L21-2(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,394 INFO L268 CegarLoopResult]: For program point L517(lines 517 572) no Hoare annotation was computed. [2020-07-21 01:32:07,394 INFO L268 CegarLoopResult]: For program point L286(lines 286 572) no Hoare annotation was computed. [2020-07-21 01:32:07,395 INFO L268 CegarLoopResult]: For program point L220(lines 220 572) no Hoare annotation was computed. [2020-07-21 01:32:07,395 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-21 01:32:07,395 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-07-21 01:32:07,395 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-07-21 01:32:07,395 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-07-21 01:32:07,395 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-07-21 01:32:07,395 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-21 01:32:07,395 INFO L268 CegarLoopResult]: For program point L419(lines 419 572) no Hoare annotation was computed. [2020-07-21 01:32:07,395 INFO L268 CegarLoopResult]: For program point L320(lines 320 572) no Hoare annotation was computed. [2020-07-21 01:32:07,396 INFO L268 CegarLoopResult]: For program point L254(lines 254 572) no Hoare annotation was computed. [2020-07-21 01:32:07,396 INFO L268 CegarLoopResult]: For program point L354(lines 354 572) no Hoare annotation was computed. [2020-07-21 01:32:07,396 INFO L268 CegarLoopResult]: For program point L189-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,396 INFO L268 CegarLoopResult]: For program point L156-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,396 INFO L268 CegarLoopResult]: For program point L123-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,396 INFO L268 CegarLoopResult]: For program point L90-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,396 INFO L268 CegarLoopResult]: For program point L57-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,396 INFO L268 CegarLoopResult]: For program point L24-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,397 INFO L268 CegarLoopResult]: For program point L487(lines 487 572) no Hoare annotation was computed. [2020-07-21 01:32:07,397 INFO L268 CegarLoopResult]: For program point L454(lines 454 572) no Hoare annotation was computed. [2020-07-21 01:32:07,397 INFO L268 CegarLoopResult]: For program point L388(lines 388 572) no Hoare annotation was computed. [2020-07-21 01:32:07,397 INFO L268 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2020-07-21 01:32:07,397 INFO L268 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2020-07-21 01:32:07,397 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-07-21 01:32:07,397 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-07-21 01:32:07,397 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-07-21 01:32:07,397 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-21 01:32:07,398 INFO L268 CegarLoopResult]: For program point L554(lines 554 572) no Hoare annotation was computed. [2020-07-21 01:32:07,398 INFO L268 CegarLoopResult]: For program point L323(lines 323 572) no Hoare annotation was computed. [2020-07-21 01:32:07,398 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 20 574) the Hoare annotation is: (let ((.cse0 (not (= 0 ~a12~0))) (.cse1 (not (= 14 ~a4~0))) (.cse3 (not (<= |old(~a19~0)| 9))) (.cse2 (and (= ~a10~0 |old(~a10~0)|) (= ~a19~0 |old(~a19~0)|) (= ~a1~0 |old(~a1~0)|)))) (and (or (not (<= |old(~a19~0)| 6)) .cse0 .cse1 .cse2) (or (not (<= 4 |old(~a10~0)|)) .cse0 .cse1 .cse3 .cse2) (or .cse0 .cse1 .cse2 (not (<= |old(~a10~0)| 2))) (or (not (< 7 |old(~a19~0)|)) .cse0 .cse1 .cse3 .cse2))) [2020-07-21 01:32:07,398 INFO L268 CegarLoopResult]: For program point L357(lines 357 572) no Hoare annotation was computed. [2020-07-21 01:32:07,398 INFO L268 CegarLoopResult]: For program point L291(lines 291 572) no Hoare annotation was computed. [2020-07-21 01:32:07,398 INFO L268 CegarLoopResult]: For program point L225(lines 225 572) no Hoare annotation was computed. [2020-07-21 01:32:07,398 INFO L268 CegarLoopResult]: For program point L192-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,398 INFO L268 CegarLoopResult]: For program point L159-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,398 INFO L268 CegarLoopResult]: For program point L126-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,399 INFO L268 CegarLoopResult]: For program point L93-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,399 INFO L268 CegarLoopResult]: For program point L60-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,399 INFO L268 CegarLoopResult]: For program point L27-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,399 INFO L268 CegarLoopResult]: For program point L523(lines 523 572) no Hoare annotation was computed. [2020-07-21 01:32:07,399 INFO L268 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2020-07-21 01:32:07,399 INFO L268 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-07-21 01:32:07,399 INFO L268 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-07-21 01:32:07,399 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-07-21 01:32:07,399 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-07-21 01:32:07,399 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-07-21 01:32:07,400 INFO L268 CegarLoopResult]: For program point L557(lines 557 572) no Hoare annotation was computed. [2020-07-21 01:32:07,400 INFO L268 CegarLoopResult]: For program point L425(lines 425 572) no Hoare annotation was computed. [2020-07-21 01:32:07,400 INFO L268 CegarLoopResult]: For program point L326(lines 326 572) no Hoare annotation was computed. [2020-07-21 01:32:07,400 INFO L268 CegarLoopResult]: For program point L260(lines 260 572) no Hoare annotation was computed. [2020-07-21 01:32:07,400 INFO L268 CegarLoopResult]: For program point L393(lines 393 572) no Hoare annotation was computed. [2020-07-21 01:32:07,400 INFO L268 CegarLoopResult]: For program point L360(lines 360 572) no Hoare annotation was computed. [2020-07-21 01:32:07,400 INFO L268 CegarLoopResult]: For program point L195-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,400 INFO L268 CegarLoopResult]: For program point L162-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,400 INFO L268 CegarLoopResult]: For program point L129-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,401 INFO L268 CegarLoopResult]: For program point L96-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,401 INFO L268 CegarLoopResult]: For program point L63-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,401 INFO L268 CegarLoopResult]: For program point L30-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,401 INFO L268 CegarLoopResult]: For program point L526(lines 526 572) no Hoare annotation was computed. [2020-07-21 01:32:07,401 INFO L268 CegarLoopResult]: For program point L493(lines 493 572) no Hoare annotation was computed. [2020-07-21 01:32:07,401 INFO L268 CegarLoopResult]: For program point L460(lines 460 572) no Hoare annotation was computed. [2020-07-21 01:32:07,401 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-07-21 01:32:07,401 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-07-21 01:32:07,401 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-07-21 01:32:07,402 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-07-21 01:32:07,402 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-07-21 01:32:07,402 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-21 01:32:07,402 INFO L268 CegarLoopResult]: For program point L329(lines 329 572) no Hoare annotation was computed. [2020-07-21 01:32:07,402 INFO L268 CegarLoopResult]: For program point L296(lines 296 572) no Hoare annotation was computed. [2020-07-21 01:32:07,402 INFO L268 CegarLoopResult]: For program point L231(lines 231 572) no Hoare annotation was computed. [2020-07-21 01:32:07,402 INFO L268 CegarLoopResult]: For program point L198-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,402 INFO L268 CegarLoopResult]: For program point L165-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,402 INFO L268 CegarLoopResult]: For program point L132-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,403 INFO L268 CegarLoopResult]: For program point L99-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,403 INFO L268 CegarLoopResult]: For program point L66-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,403 INFO L268 CegarLoopResult]: For program point L33-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:32:07,403 INFO L268 CegarLoopResult]: For program point L529(lines 529 572) no Hoare annotation was computed. [2020-07-21 01:32:07,403 INFO L268 CegarLoopResult]: For program point L430(lines 430 572) no Hoare annotation was computed. [2020-07-21 01:32:07,403 INFO L268 CegarLoopResult]: For program point L265(lines 265 572) no Hoare annotation was computed. [2020-07-21 01:32:07,403 INFO L268 CegarLoopResult]: For program point L199(line 199) no Hoare annotation was computed. [2020-07-21 01:32:07,403 INFO L268 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2020-07-21 01:32:07,403 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-07-21 01:32:07,403 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-07-21 01:32:07,404 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-07-21 01:32:07,404 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-21 01:32:07,404 INFO L268 CegarLoopResult]: For program point L563(lines 563 572) no Hoare annotation was computed. [2020-07-21 01:32:07,404 INFO L268 CegarLoopResult]: For program point L398(lines 398 572) no Hoare annotation was computed. [2020-07-21 01:32:07,404 INFO L268 CegarLoopResult]: For program point L365(lines 365 572) no Hoare annotation was computed. [2020-07-21 01:32:07,404 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 01:32:07,404 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a10~0 0) (= 14 ~a4~0) (<= ~a19~0 9) (= 0 ~a12~0) (< 7 ~a19~0) (= 23 ~a1~0)) [2020-07-21 01:32:07,404 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 01:32:07,404 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 01:32:07,405 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 576 592) the Hoare annotation is: (or (not (< 7 |old(~a19~0)|)) (not (= 23 |old(~a1~0)|)) (not (<= |old(~a10~0)| 0)) (not (= 0 ~a12~0)) (not (= 14 ~a4~0)) (not (<= |old(~a19~0)| 9)) (and (= ~a10~0 |old(~a10~0)|) (= ~a19~0 |old(~a19~0)|) (= ~a1~0 |old(~a1~0)|))) [2020-07-21 01:32:07,405 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 576 592) no Hoare annotation was computed. [2020-07-21 01:32:07,405 INFO L264 CegarLoopResult]: At program point L590(line 590) the Hoare annotation is: (let ((.cse0 (<= ~a19~0 9))) (or (<= ~a19~0 6) (not (<= |old(~a10~0)| 0)) (and .cse0 (<= 4 ~a10~0)) (not (< 7 |old(~a19~0)|)) (not (= 23 |old(~a1~0)|)) (not (= 0 ~a12~0)) (<= ~a10~0 2) (and .cse0 (< 7 ~a19~0)) (not (= 14 ~a4~0)) (not (<= |old(~a19~0)| 9)))) [2020-07-21 01:32:07,405 INFO L268 CegarLoopResult]: For program point L590-1(line 590) no Hoare annotation was computed. [2020-07-21 01:32:07,405 INFO L268 CegarLoopResult]: For program point L587(line 587) no Hoare annotation was computed. [2020-07-21 01:32:07,405 INFO L264 CegarLoopResult]: At program point L582-2(lines 582 591) the Hoare annotation is: (let ((.cse0 (<= ~a19~0 9))) (or (<= ~a19~0 6) (not (<= |old(~a10~0)| 0)) (and .cse0 (<= 4 ~a10~0)) (not (< 7 |old(~a19~0)|)) (not (= 23 |old(~a1~0)|)) (not (= 0 ~a12~0)) (<= ~a10~0 2) (and .cse0 (< 7 ~a19~0)) (not (= 14 ~a4~0)) (not (<= |old(~a19~0)| 9)))) [2020-07-21 01:32:07,406 INFO L268 CegarLoopResult]: For program point L582-3(lines 576 592) no Hoare annotation was computed. [2020-07-21 01:32:07,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:32:07 BoogieIcfgContainer [2020-07-21 01:32:07,426 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 01:32:07,428 INFO L168 Benchmark]: Toolchain (without parser) took 268165.86 ms. Allocated memory was 137.9 MB in the beginning and 578.8 MB in the end (delta: 440.9 MB). Free memory was 100.3 MB in the beginning and 441.2 MB in the end (delta: -340.9 MB). Peak memory consumption was 431.6 MB. Max. memory is 7.1 GB. [2020-07-21 01:32:07,428 INFO L168 Benchmark]: CDTParser took 0.64 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 01:32:07,429 INFO L168 Benchmark]: CACSL2BoogieTranslator took 819.12 ms. Allocated memory was 137.9 MB in the beginning and 204.5 MB in the end (delta: 66.6 MB). Free memory was 100.1 MB in the beginning and 170.7 MB in the end (delta: -70.6 MB). Peak memory consumption was 35.0 MB. Max. memory is 7.1 GB. [2020-07-21 01:32:07,430 INFO L168 Benchmark]: Boogie Preprocessor took 102.71 ms. Allocated memory is still 204.5 MB. Free memory was 170.7 MB in the beginning and 165.8 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2020-07-21 01:32:07,431 INFO L168 Benchmark]: RCFGBuilder took 1516.76 ms. Allocated memory was 204.5 MB in the beginning and 236.5 MB in the end (delta: 32.0 MB). Free memory was 165.8 MB in the beginning and 181.9 MB in the end (delta: -16.1 MB). Peak memory consumption was 83.9 MB. Max. memory is 7.1 GB. [2020-07-21 01:32:07,432 INFO L168 Benchmark]: TraceAbstraction took 265719.40 ms. Allocated memory was 236.5 MB in the beginning and 578.8 MB in the end (delta: 342.4 MB). Free memory was 181.9 MB in the beginning and 441.2 MB in the end (delta: -259.3 MB). Peak memory consumption was 414.6 MB. Max. memory is 7.1 GB. [2020-07-21 01:32:07,435 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.64 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 819.12 ms. Allocated memory was 137.9 MB in the beginning and 204.5 MB in the end (delta: 66.6 MB). Free memory was 100.1 MB in the beginning and 170.7 MB in the end (delta: -70.6 MB). Peak memory consumption was 35.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 102.71 ms. Allocated memory is still 204.5 MB. Free memory was 170.7 MB in the beginning and 165.8 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1516.76 ms. Allocated memory was 204.5 MB in the beginning and 236.5 MB in the end (delta: 32.0 MB). Free memory was 165.8 MB in the beginning and 181.9 MB in the end (delta: -16.1 MB). Peak memory consumption was 83.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 265719.40 ms. Allocated memory was 236.5 MB in the beginning and 578.8 MB in the end (delta: 342.4 MB). Free memory was 181.9 MB in the beginning and 441.2 MB in the end (delta: -259.3 MB). Peak memory consumption was 414.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 79]: 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: 582]: Loop Invariant Derived loop invariant: ((((((((a19 <= 6 || !(\old(a10) <= 0)) || (a19 <= 9 && 4 <= a10)) || !(7 < \old(a19))) || !(23 == \old(a1))) || !(0 == a12)) || a10 <= 2) || (a19 <= 9 && 7 < a19)) || !(14 == a4)) || !(\old(a19) <= 9) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 261.1s, OverallIterations: 10, TraceHistogramMax: 4, AutomataDifference: 241.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 754 SDtfs, 2997 SDslu, 306 SDs, 0 SdLazy, 6968 SolverSat, 1305 SolverUnsat, 87 SolverUnknown, 0 SolverNotchecked, 217.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3232 GetRequests, 3162 SyntacticMatches, 4 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 28.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2964occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 10 MinimizatonAttempts, 797 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 94 PreInvPairs, 140 NumberOfFragments, 283 HoareAnnotationTreeSize, 94 FomulaSimplifications, 5674 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 7 FomulaSimplificationsInter, 6567 FormulaSimplificationTreeSizeReductionInter, 3.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 15.3s InterpolantComputationTime, 2206 NumberOfCodeBlocks, 1796 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 2974 ConstructedInterpolants, 6 QuantifiedInterpolants, 3050500 SizeOfPredicates, 19 NumberOfNonLiveVariables, 3305 ConjunctsInSsa, 81 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 2337/2539 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...