/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 22:07:25,773 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 22:07:25,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 22:07:25,788 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-20 22:07:25,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 22:07:25,803 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 22:07:25,804 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 22:07:25,806 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 22:07:25,806 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 22:07:25,807 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 22:07:25,813 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 22:07:25,818 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 22:07:25,825 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 22:07:25,826 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 22:07:25,827 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 22:07:25,828 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 22:07:25,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 22:07:25,839 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 [2020-07-20 22:07:25,854 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 22:07:25,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 22:07:25,855 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 22:07:25,855 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 22:07:25,856 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 22:07:25,856 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 22:07:25,856 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 22:07:25,856 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 22:07:25,856 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 22:07:25,857 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 22:07:25,857 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 22:07:25,857 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 22:07:25,857 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 22:07:25,857 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 22:07:25,858 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 22:07:25,858 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 22:07:25,858 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 22:07:25,858 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 22:07:25,858 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 22:07:25,859 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 22:07:25,859 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 22:07:25,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 22:07:25,859 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 22:07:25,860 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 22:07:25,860 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 22:07:25,860 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 22:07:25,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:07:25,860 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 22:07:25,860 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 22:07:25,861 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 22:07:26,131 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 22:07:26,152 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 22:07:26,156 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 22:07:26,158 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 22:07:26,160 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 22:07:26,162 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label38.c [2020-07-20 22:07:26,237 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbcebe8dc/daeedd55118342dbac7acb72aec00b17/FLAGb1ac48f22 [2020-07-20 22:07:26,756 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 22:07:26,760 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label38.c [2020-07-20 22:07:26,772 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbcebe8dc/daeedd55118342dbac7acb72aec00b17/FLAGb1ac48f22 [2020-07-20 22:07:27,088 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbcebe8dc/daeedd55118342dbac7acb72aec00b17 [2020-07-20 22:07:27,096 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 22:07:27,100 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 22:07:27,101 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 22:07:27,101 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 22:07:27,104 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 22:07:27,107 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:07:27" (1/1) ... [2020-07-20 22:07:27,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fca7f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:07:27, skipping insertion in model container [2020-07-20 22:07:27,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:07:27" (1/1) ... [2020-07-20 22:07:27,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 22:07:27,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 22:07:27,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 22:07:27,776 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 22:07:27,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 22:07:27,959 INFO L208 MainTranslator]: Completed translation [2020-07-20 22:07:27,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:07:27 WrapperNode [2020-07-20 22:07:27,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 22:07:27,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 22:07:27,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 22:07:27,961 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 22:07:27,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:07:27" (1/1) ... [2020-07-20 22:07:27,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:07:27" (1/1) ... [2020-07-20 22:07:27,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:07:27" (1/1) ... [2020-07-20 22:07:27,998 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:07:27" (1/1) ... [2020-07-20 22:07:28,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:07:27" (1/1) ... [2020-07-20 22:07:28,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:07:27" (1/1) ... [2020-07-20 22:07:28,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:07:27" (1/1) ... [2020-07-20 22:07:28,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 22:07:28,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 22:07:28,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 22:07:28,069 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 22:07:28,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:07:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 22:07:28,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 22:07:28,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 22:07:28,140 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-20 22:07:28,140 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 22:07:28,140 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-20 22:07:28,140 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 22:07:28,140 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 22:07:28,141 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 22:07:28,141 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 22:07:28,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 22:07:28,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 22:07:29,413 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 22:07:29,413 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 22:07:29,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:07:29 BoogieIcfgContainer [2020-07-20 22:07:29,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 22:07:29,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 22:07:29,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 22:07:29,425 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 22:07:29,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:07:27" (1/3) ... [2020-07-20 22:07:29,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a79628e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:07:29, skipping insertion in model container [2020-07-20 22:07:29,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:07:27" (2/3) ... [2020-07-20 22:07:29,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a79628e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:07:29, skipping insertion in model container [2020-07-20 22:07:29,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:07:29" (3/3) ... [2020-07-20 22:07:29,429 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label38.c [2020-07-20 22:07:29,439 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 22:07:29,447 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 22:07:29,463 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 22:07:29,490 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 22:07:29,490 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 22:07:29,490 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 22:07:29,491 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 22:07:29,491 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 22:07:29,491 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 22:07:29,491 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 22:07:29,492 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 22:07:29,517 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-07-20 22:07:29,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-20 22:07:29,525 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:07:29,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:07:29,527 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:07:29,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:07:29,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1813043417, now seen corresponding path program 1 times [2020-07-20 22:07:29,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:07:29,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301528719] [2020-07-20 22:07:29,544 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 [2020-07-20 22:07:29,666 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:07:29,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:07:29,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 22:07:29,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:07:29,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:07:29,746 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:07:29,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301528719] [2020-07-20 22:07:29,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:07:29,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:07:29,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632611406] [2020-07-20 22:07:29,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:07:29,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:07:29,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:07:29,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:07:29,773 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2020-07-20 22:07:30,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:07:30,826 INFO L93 Difference]: Finished difference Result 586 states and 1004 transitions. [2020-07-20 22:07:30,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:07:30,828 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-07-20 22:07:30,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:07:30,846 INFO L225 Difference]: With dead ends: 586 [2020-07-20 22:07:30,846 INFO L226 Difference]: Without dead ends: 294 [2020-07-20 22:07:30,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:07:30,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-07-20 22:07:30,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2020-07-20 22:07:30,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-07-20 22:07:30,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 426 transitions. [2020-07-20 22:07:30,941 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 426 transitions. Word has length 38 [2020-07-20 22:07:30,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:07:30,942 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 426 transitions. [2020-07-20 22:07:30,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:07:30,943 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 426 transitions. [2020-07-20 22:07:30,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-07-20 22:07:30,951 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:07:30,952 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:07:31,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:07:31,168 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:07:31,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:07:31,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1939889954, now seen corresponding path program 1 times [2020-07-20 22:07:31,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:07:31,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424899954] [2020-07-20 22:07:31,169 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 [2020-07-20 22:07:31,285 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:07:31,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:07:31,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 22:07:31,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:07:31,357 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:07:31,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:07:31,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424899954] [2020-07-20 22:07:31,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:07:31,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:07:31,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603613033] [2020-07-20 22:07:31,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:07:31,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:07:31,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:07:31,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:07:31,366 INFO L87 Difference]: Start difference. First operand 294 states and 426 transitions. Second operand 3 states. [2020-07-20 22:07:32,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:07:32,070 INFO L93 Difference]: Finished difference Result 868 states and 1277 transitions. [2020-07-20 22:07:32,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:07:32,071 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 112 [2020-07-20 22:07:32,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:07:32,077 INFO L225 Difference]: With dead ends: 868 [2020-07-20 22:07:32,077 INFO L226 Difference]: Without dead ends: 580 [2020-07-20 22:07:32,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:07:32,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-07-20 22:07:32,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2020-07-20 22:07:32,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-07-20 22:07:32,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 762 transitions. [2020-07-20 22:07:32,122 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 762 transitions. Word has length 112 [2020-07-20 22:07:32,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:07:32,123 INFO L479 AbstractCegarLoop]: Abstraction has 580 states and 762 transitions. [2020-07-20 22:07:32,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:07:32,123 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 762 transitions. [2020-07-20 22:07:32,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-07-20 22:07:32,125 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:07:32,126 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:07:32,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:07:32,340 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:07:32,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:07:32,341 INFO L82 PathProgramCache]: Analyzing trace with hash -444185243, now seen corresponding path program 1 times [2020-07-20 22:07:32,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:07:32,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193557480] [2020-07-20 22:07:32,343 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-07-20 22:07:32,447 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:07:32,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:07:32,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 22:07:32,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:07:32,501 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:07:32,502 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:07:32,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193557480] [2020-07-20 22:07:32,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:07:32,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:07:32,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145864797] [2020-07-20 22:07:32,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:07:32,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:07:32,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:07:32,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:07:32,505 INFO L87 Difference]: Start difference. First operand 580 states and 762 transitions. Second operand 3 states. [2020-07-20 22:07:33,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:07:33,191 INFO L93 Difference]: Finished difference Result 1440 states and 1957 transitions. [2020-07-20 22:07:33,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:07:33,192 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 117 [2020-07-20 22:07:33,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:07:33,197 INFO L225 Difference]: With dead ends: 1440 [2020-07-20 22:07:33,198 INFO L226 Difference]: Without dead ends: 866 [2020-07-20 22:07:33,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:07:33,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2020-07-20 22:07:33,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 866. [2020-07-20 22:07:33,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 866 states. [2020-07-20 22:07:33,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1139 transitions. [2020-07-20 22:07:33,234 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1139 transitions. Word has length 117 [2020-07-20 22:07:33,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:07:33,235 INFO L479 AbstractCegarLoop]: Abstraction has 866 states and 1139 transitions. [2020-07-20 22:07:33,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:07:33,235 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1139 transitions. [2020-07-20 22:07:33,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-07-20 22:07:33,238 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:07:33,239 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:07:33,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:07:33,453 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:07:33,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:07:33,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1165296197, now seen corresponding path program 1 times [2020-07-20 22:07:33,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:07:33,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948787757] [2020-07-20 22:07:33,454 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-07-20 22:07:33,535 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:07:33,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:07:33,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 22:07:33,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:07:33,602 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:07:33,602 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:07:33,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948787757] [2020-07-20 22:07:33,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:07:33,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:07:33,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450699050] [2020-07-20 22:07:33,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:07:33,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:07:33,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:07:33,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:07:33,609 INFO L87 Difference]: Start difference. First operand 866 states and 1139 transitions. Second operand 3 states. [2020-07-20 22:07:34,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:07:34,374 INFO L93 Difference]: Finished difference Result 1583 states and 2141 transitions. [2020-07-20 22:07:34,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:07:34,374 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2020-07-20 22:07:34,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:07:34,383 INFO L225 Difference]: With dead ends: 1583 [2020-07-20 22:07:34,384 INFO L226 Difference]: Without dead ends: 1581 [2020-07-20 22:07:34,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:07:34,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2020-07-20 22:07:34,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1295. [2020-07-20 22:07:34,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1295 states. [2020-07-20 22:07:34,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1295 states to 1295 states and 1753 transitions. [2020-07-20 22:07:34,432 INFO L78 Accepts]: Start accepts. Automaton has 1295 states and 1753 transitions. Word has length 133 [2020-07-20 22:07:34,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:07:34,433 INFO L479 AbstractCegarLoop]: Abstraction has 1295 states and 1753 transitions. [2020-07-20 22:07:34,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:07:34,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states and 1753 transitions. [2020-07-20 22:07:34,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-07-20 22:07:34,437 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:07:34,437 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, 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] [2020-07-20 22:07:34,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:07:34,652 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:07:34,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:07:34,653 INFO L82 PathProgramCache]: Analyzing trace with hash 588392979, now seen corresponding path program 1 times [2020-07-20 22:07:34,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:07:34,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944020807] [2020-07-20 22:07:34,655 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 [2020-07-20 22:07:34,758 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:07:34,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:07:34,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 22:07:34,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:07:34,821 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 133 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:07:34,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 22:07:34,988 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 133 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:07:34,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944020807] [2020-07-20 22:07:34,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 22:07:34,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-20 22:07:34,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873381964] [2020-07-20 22:07:34,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 22:07:34,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:07:34,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 22:07:34,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-20 22:07:34,991 INFO L87 Difference]: Start difference. First operand 1295 states and 1753 transitions. Second operand 7 states. [2020-07-20 22:07:36,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:07:36,608 INFO L93 Difference]: Finished difference Result 3506 states and 4847 transitions. [2020-07-20 22:07:36,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 22:07:36,610 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 190 [2020-07-20 22:07:36,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:07:36,622 INFO L225 Difference]: With dead ends: 3506 [2020-07-20 22:07:36,623 INFO L226 Difference]: Without dead ends: 1627 [2020-07-20 22:07:36,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 375 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-07-20 22:07:36,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2020-07-20 22:07:36,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 1599. [2020-07-20 22:07:36,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1599 states. [2020-07-20 22:07:36,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 1888 transitions. [2020-07-20 22:07:36,673 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 1888 transitions. Word has length 190 [2020-07-20 22:07:36,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:07:36,674 INFO L479 AbstractCegarLoop]: Abstraction has 1599 states and 1888 transitions. [2020-07-20 22:07:36,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 22:07:36,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 1888 transitions. [2020-07-20 22:07:36,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-07-20 22:07:36,678 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:07:36,678 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:07:36,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:07:36,893 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:07:36,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:07:36,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1370569995, now seen corresponding path program 1 times [2020-07-20 22:07:36,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:07:36,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199612447] [2020-07-20 22:07:36,895 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 [2020-07-20 22:07:37,002 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:07:37,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:07:37,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 22:07:37,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:07:37,064 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:07:37,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 22:07:37,196 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:07:37,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199612447] [2020-07-20 22:07:37,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 22:07:37,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-20 22:07:37,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012405827] [2020-07-20 22:07:37,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 22:07:37,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:07:37,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 22:07:37,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 22:07:37,199 INFO L87 Difference]: Start difference. First operand 1599 states and 1888 transitions. Second operand 6 states. [2020-07-20 22:07:38,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:07:38,142 INFO L93 Difference]: Finished difference Result 3514 states and 4215 transitions. [2020-07-20 22:07:38,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 22:07:38,143 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 206 [2020-07-20 22:07:38,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:07:38,152 INFO L225 Difference]: With dead ends: 3514 [2020-07-20 22:07:38,153 INFO L226 Difference]: Without dead ends: 1917 [2020-07-20 22:07:38,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 406 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-20 22:07:38,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1917 states. [2020-07-20 22:07:38,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1917 to 1764. [2020-07-20 22:07:38,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1764 states. [2020-07-20 22:07:38,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1764 states to 1764 states and 2102 transitions. [2020-07-20 22:07:38,226 INFO L78 Accepts]: Start accepts. Automaton has 1764 states and 2102 transitions. Word has length 206 [2020-07-20 22:07:38,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:07:38,226 INFO L479 AbstractCegarLoop]: Abstraction has 1764 states and 2102 transitions. [2020-07-20 22:07:38,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 22:07:38,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1764 states and 2102 transitions. [2020-07-20 22:07:38,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-07-20 22:07:38,231 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:07:38,232 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, 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, 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] [2020-07-20 22:07:38,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:07:38,445 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:07:38,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:07:38,446 INFO L82 PathProgramCache]: Analyzing trace with hash 24797361, now seen corresponding path program 1 times [2020-07-20 22:07:38,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:07:38,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158670650] [2020-07-20 22:07:38,447 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 [2020-07-20 22:07:38,557 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:07:38,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:07:38,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 22:07:38,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:07:38,627 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-07-20 22:07:38,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:07:38,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [158670650] [2020-07-20 22:07:38,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:07:38,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:07:38,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153746710] [2020-07-20 22:07:38,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:07:38,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:07:38,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:07:38,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:07:38,629 INFO L87 Difference]: Start difference. First operand 1764 states and 2102 transitions. Second operand 3 states. [2020-07-20 22:07:39,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:07:39,192 INFO L93 Difference]: Finished difference Result 1911 states and 2249 transitions. [2020-07-20 22:07:39,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:07:39,193 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 224 [2020-07-20 22:07:39,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:07:39,201 INFO L225 Difference]: With dead ends: 1911 [2020-07-20 22:07:39,201 INFO L226 Difference]: Without dead ends: 1760 [2020-07-20 22:07:39,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:07:39,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1760 states. [2020-07-20 22:07:39,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1760 to 1760. [2020-07-20 22:07:39,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1760 states. [2020-07-20 22:07:39,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1760 states to 1760 states and 2089 transitions. [2020-07-20 22:07:39,245 INFO L78 Accepts]: Start accepts. Automaton has 1760 states and 2089 transitions. Word has length 224 [2020-07-20 22:07:39,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:07:39,246 INFO L479 AbstractCegarLoop]: Abstraction has 1760 states and 2089 transitions. [2020-07-20 22:07:39,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:07:39,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states and 2089 transitions. [2020-07-20 22:07:39,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-07-20 22:07:39,251 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:07:39,252 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:07:39,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:07:39,465 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:07:39,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:07:39,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1311750989, now seen corresponding path program 1 times [2020-07-20 22:07:39,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:07:39,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [400199392] [2020-07-20 22:07:39,467 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 [2020-07-20 22:07:39,617 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:07:39,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:07:39,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 22:07:39,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:07:39,707 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-07-20 22:07:39,707 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:07:39,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [400199392] [2020-07-20 22:07:39,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:07:39,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:07:39,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759298232] [2020-07-20 22:07:39,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:07:39,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:07:39,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:07:39,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:07:39,709 INFO L87 Difference]: Start difference. First operand 1760 states and 2089 transitions. Second operand 3 states. [2020-07-20 22:07:40,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:07:40,328 INFO L93 Difference]: Finished difference Result 3659 states and 4430 transitions. [2020-07-20 22:07:40,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:07:40,329 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 234 [2020-07-20 22:07:40,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:07:40,330 INFO L225 Difference]: With dead ends: 3659 [2020-07-20 22:07:40,330 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 22:07:40,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:07:40,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 22:07:40,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 22:07:40,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 22:07:40,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 22:07:40,344 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 234 [2020-07-20 22:07:40,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:07:40,344 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 22:07:40,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:07:40,344 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 22:07:40,344 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 22:07:40,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:07:40,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 22:07:41,253 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 49 [2020-07-20 22:07:41,428 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 22:07:41,428 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a10~0 |old(~a10~0)|) (<= ~a19~0 |old(~a19~0)|)) [2020-07-20 22:07:41,429 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 22:07:41,429 INFO L268 CegarLoopResult]: For program point L465(lines 465 572) no Hoare annotation was computed. [2020-07-20 22:07:41,429 INFO L268 CegarLoopResult]: For program point L201-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,429 INFO L268 CegarLoopResult]: For program point L168-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,429 INFO L268 CegarLoopResult]: For program point L135-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,429 INFO L268 CegarLoopResult]: For program point L102-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,429 INFO L268 CegarLoopResult]: For program point L69-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,430 INFO L268 CegarLoopResult]: For program point L36-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,430 INFO L268 CegarLoopResult]: For program point L499(lines 499 572) no Hoare annotation was computed. [2020-07-20 22:07:41,430 INFO L268 CegarLoopResult]: For program point L301(lines 301 572) no Hoare annotation was computed. [2020-07-20 22:07:41,430 INFO L268 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2020-07-20 22:07:41,430 INFO L268 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2020-07-20 22:07:41,430 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-07-20 22:07:41,430 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-07-20 22:07:41,430 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-07-20 22:07:41,432 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-07-20 22:07:41,432 INFO L268 CegarLoopResult]: For program point L335(lines 335 572) no Hoare annotation was computed. [2020-07-20 22:07:41,432 INFO L268 CegarLoopResult]: For program point L236(lines 236 572) no Hoare annotation was computed. [2020-07-20 22:07:41,432 INFO L268 CegarLoopResult]: For program point L534(lines 534 572) no Hoare annotation was computed. [2020-07-20 22:07:41,432 INFO L268 CegarLoopResult]: For program point L171-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,433 INFO L268 CegarLoopResult]: For program point L138-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,434 INFO L268 CegarLoopResult]: For program point L105-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,434 INFO L268 CegarLoopResult]: For program point L72-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,434 INFO L268 CegarLoopResult]: For program point L39-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,434 INFO L268 CegarLoopResult]: For program point L436(lines 436 572) no Hoare annotation was computed. [2020-07-20 22:07:41,434 INFO L268 CegarLoopResult]: For program point L403(lines 403 572) no Hoare annotation was computed. [2020-07-20 22:07:41,434 INFO L268 CegarLoopResult]: For program point L370(lines 370 572) no Hoare annotation was computed. [2020-07-20 22:07:41,434 INFO L268 CegarLoopResult]: For program point L271(lines 271 572) no Hoare annotation was computed. [2020-07-20 22:07:41,434 INFO L268 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2020-07-20 22:07:41,434 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-07-20 22:07:41,435 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-07-20 22:07:41,435 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-07-20 22:07:41,435 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-07-20 22:07:41,435 INFO L268 CegarLoopResult]: For program point L569(lines 569 572) no Hoare annotation was computed. [2020-07-20 22:07:41,435 INFO L268 CegarLoopResult]: For program point L239(lines 239 572) no Hoare annotation was computed. [2020-07-20 22:07:41,438 INFO L268 CegarLoopResult]: For program point L504(lines 504 572) no Hoare annotation was computed. [2020-07-20 22:07:41,438 INFO L268 CegarLoopResult]: For program point L471(lines 471 572) no Hoare annotation was computed. [2020-07-20 22:07:41,438 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 100) no Hoare annotation was computed. [2020-07-20 22:07:41,438 INFO L268 CegarLoopResult]: For program point L306(lines 306 572) no Hoare annotation was computed. [2020-07-20 22:07:41,438 INFO L268 CegarLoopResult]: For program point L174-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,439 INFO L268 CegarLoopResult]: For program point L141-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,439 INFO L268 CegarLoopResult]: For program point L108-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,439 INFO L268 CegarLoopResult]: For program point L75-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,439 INFO L268 CegarLoopResult]: For program point L42-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,439 INFO L268 CegarLoopResult]: For program point L340(lines 340 572) no Hoare annotation was computed. [2020-07-20 22:07:41,440 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-20 22:07:41,440 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-07-20 22:07:41,440 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-07-20 22:07:41,440 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-07-20 22:07:41,440 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-07-20 22:07:41,440 INFO L268 CegarLoopResult]: For program point L540(lines 540 572) no Hoare annotation was computed. [2020-07-20 22:07:41,440 INFO L268 CegarLoopResult]: For program point L408(lines 408 572) no Hoare annotation was computed. [2020-07-20 22:07:41,440 INFO L268 CegarLoopResult]: For program point L375(lines 375 572) no Hoare annotation was computed. [2020-07-20 22:07:41,441 INFO L268 CegarLoopResult]: For program point L210(lines 210 572) no Hoare annotation was computed. [2020-07-20 22:07:41,441 INFO L268 CegarLoopResult]: For program point L177-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,441 INFO L268 CegarLoopResult]: For program point L144-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,441 INFO L268 CegarLoopResult]: For program point L111-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,443 INFO L268 CegarLoopResult]: For program point L78-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,443 INFO L268 CegarLoopResult]: For program point L45-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,443 INFO L268 CegarLoopResult]: For program point L442(lines 442 572) no Hoare annotation was computed. [2020-07-20 22:07:41,443 INFO L268 CegarLoopResult]: For program point L277(lines 277 572) no Hoare annotation was computed. [2020-07-20 22:07:41,443 INFO L268 CegarLoopResult]: For program point L244(lines 244 572) no Hoare annotation was computed. [2020-07-20 22:07:41,443 INFO L268 CegarLoopResult]: For program point L178(line 178) no Hoare annotation was computed. [2020-07-20 22:07:41,444 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-07-20 22:07:41,444 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-07-20 22:07:41,444 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-07-20 22:07:41,444 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-20 22:07:41,444 INFO L268 CegarLoopResult]: For program point L509(lines 509 572) no Hoare annotation was computed. [2020-07-20 22:07:41,444 INFO L268 CegarLoopResult]: For program point L476(lines 476 572) no Hoare annotation was computed. [2020-07-20 22:07:41,444 INFO L268 CegarLoopResult]: For program point L378(lines 378 572) no Hoare annotation was computed. [2020-07-20 22:07:41,444 INFO L268 CegarLoopResult]: For program point L345(lines 345 572) no Hoare annotation was computed. [2020-07-20 22:07:41,444 INFO L268 CegarLoopResult]: For program point L312(lines 312 572) no Hoare annotation was computed. [2020-07-20 22:07:41,444 INFO L268 CegarLoopResult]: For program point L180-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,445 INFO L268 CegarLoopResult]: For program point L147-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,445 INFO L268 CegarLoopResult]: For program point L114-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,445 INFO L268 CegarLoopResult]: For program point L81-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,445 INFO L268 CegarLoopResult]: For program point L48-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,445 INFO L268 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2020-07-20 22:07:41,445 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-07-20 22:07:41,445 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-20 22:07:41,445 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-07-20 22:07:41,445 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-07-20 22:07:41,446 INFO L268 CegarLoopResult]: For program point L545(lines 545 572) no Hoare annotation was computed. [2020-07-20 22:07:41,446 INFO L268 CegarLoopResult]: For program point L215(lines 215 572) no Hoare annotation was computed. [2020-07-20 22:07:41,446 INFO L268 CegarLoopResult]: For program point L414(lines 414 572) no Hoare annotation was computed. [2020-07-20 22:07:41,446 INFO L268 CegarLoopResult]: For program point L249(lines 249 572) no Hoare annotation was computed. [2020-07-20 22:07:41,446 INFO L268 CegarLoopResult]: For program point L183-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,446 INFO L268 CegarLoopResult]: For program point L150-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,446 INFO L268 CegarLoopResult]: For program point L117-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,446 INFO L268 CegarLoopResult]: For program point L84-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,446 INFO L268 CegarLoopResult]: For program point L51-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,447 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,447 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,447 INFO L268 CegarLoopResult]: For program point L514(lines 514 572) no Hoare annotation was computed. [2020-07-20 22:07:41,447 INFO L268 CegarLoopResult]: For program point L481(lines 481 572) no Hoare annotation was computed. [2020-07-20 22:07:41,447 INFO L268 CegarLoopResult]: For program point L448(lines 448 572) no Hoare annotation was computed. [2020-07-20 22:07:41,447 INFO L268 CegarLoopResult]: For program point L283(lines 283 572) no Hoare annotation was computed. [2020-07-20 22:07:41,447 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-07-20 22:07:41,447 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-07-20 22:07:41,447 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-07-20 22:07:41,448 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-07-20 22:07:41,448 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-07-20 22:07:41,448 INFO L268 CegarLoopResult]: For program point L548(lines 548 572) no Hoare annotation was computed. [2020-07-20 22:07:41,448 INFO L268 CegarLoopResult]: For program point L383(lines 383 572) no Hoare annotation was computed. [2020-07-20 22:07:41,448 INFO L268 CegarLoopResult]: For program point L317(lines 317 572) no Hoare annotation was computed. [2020-07-20 22:07:41,449 INFO L268 CegarLoopResult]: For program point L351(lines 351 572) no Hoare annotation was computed. [2020-07-20 22:07:41,449 INFO L268 CegarLoopResult]: For program point L186-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,449 INFO L268 CegarLoopResult]: For program point L153-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,450 INFO L268 CegarLoopResult]: For program point L120-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,450 INFO L268 CegarLoopResult]: For program point L87-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,450 INFO L268 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-07-20 22:07:41,450 INFO L268 CegarLoopResult]: For program point L54-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,450 INFO L268 CegarLoopResult]: For program point L21-2(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,450 INFO L268 CegarLoopResult]: For program point L517(lines 517 572) no Hoare annotation was computed. [2020-07-20 22:07:41,450 INFO L268 CegarLoopResult]: For program point L286(lines 286 572) no Hoare annotation was computed. [2020-07-20 22:07:41,450 INFO L268 CegarLoopResult]: For program point L220(lines 220 572) no Hoare annotation was computed. [2020-07-20 22:07:41,450 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-20 22:07:41,451 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-07-20 22:07:41,451 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-07-20 22:07:41,451 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-07-20 22:07:41,451 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-07-20 22:07:41,451 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-20 22:07:41,452 INFO L268 CegarLoopResult]: For program point L419(lines 419 572) no Hoare annotation was computed. [2020-07-20 22:07:41,452 INFO L268 CegarLoopResult]: For program point L320(lines 320 572) no Hoare annotation was computed. [2020-07-20 22:07:41,452 INFO L268 CegarLoopResult]: For program point L254(lines 254 572) no Hoare annotation was computed. [2020-07-20 22:07:41,452 INFO L268 CegarLoopResult]: For program point L354(lines 354 572) no Hoare annotation was computed. [2020-07-20 22:07:41,452 INFO L268 CegarLoopResult]: For program point L189-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,452 INFO L268 CegarLoopResult]: For program point L156-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,452 INFO L268 CegarLoopResult]: For program point L123-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,452 INFO L268 CegarLoopResult]: For program point L90-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,452 INFO L268 CegarLoopResult]: For program point L57-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,453 INFO L268 CegarLoopResult]: For program point L24-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,453 INFO L268 CegarLoopResult]: For program point L487(lines 487 572) no Hoare annotation was computed. [2020-07-20 22:07:41,453 INFO L268 CegarLoopResult]: For program point L454(lines 454 572) no Hoare annotation was computed. [2020-07-20 22:07:41,453 INFO L268 CegarLoopResult]: For program point L388(lines 388 572) no Hoare annotation was computed. [2020-07-20 22:07:41,453 INFO L268 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2020-07-20 22:07:41,453 INFO L268 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2020-07-20 22:07:41,453 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-07-20 22:07:41,453 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-07-20 22:07:41,453 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-07-20 22:07:41,454 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-20 22:07:41,454 INFO L268 CegarLoopResult]: For program point L554(lines 554 572) no Hoare annotation was computed. [2020-07-20 22:07:41,454 INFO L268 CegarLoopResult]: For program point L323(lines 323 572) no Hoare annotation was computed. [2020-07-20 22:07:41,454 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 20 574) the Hoare annotation is: (let ((.cse8 (<= ~a10~0 |old(~a10~0)|)) (.cse10 (<= ~a19~0 |old(~a19~0)|))) (let ((.cse1 (not (<= 9 |old(~a19~0)|))) (.cse2 (<= 9 ~a19~0)) (.cse6 (not (<= |old(~a19~0)| 8))) (.cse9 (not (< |old(~a19~0)| 10))) (.cse0 (not (<= |old(~a1~0)| 23))) (.cse3 (<= ~a1~0 23)) (.cse5 (and .cse8 (<= 8 ~a19~0) .cse10)) (.cse7 (not (<= 8 |old(~a19~0)|))) (.cse4 (not (<= |old(~a10~0)| 1)))) (and (or .cse0 .cse1 (and .cse2 .cse3) .cse4) (or .cse5 .cse6 .cse7) (or .cse8 .cse6 (not (<= |old(~a10~0)| 2))) (or .cse9 .cse1 (and .cse2 .cse8 (< ~a19~0 10))) (or .cse0 .cse6 .cse10) (or (not (<= |old(~a10~0)| 3)) .cse6 (and .cse10 (<= ~a10~0 3))) (or .cse9 .cse0 .cse3) (or .cse5 .cse7 .cse4)))) [2020-07-20 22:07:41,454 INFO L268 CegarLoopResult]: For program point L357(lines 357 572) no Hoare annotation was computed. [2020-07-20 22:07:41,454 INFO L268 CegarLoopResult]: For program point L291(lines 291 572) no Hoare annotation was computed. [2020-07-20 22:07:41,455 INFO L268 CegarLoopResult]: For program point L225(lines 225 572) no Hoare annotation was computed. [2020-07-20 22:07:41,455 INFO L268 CegarLoopResult]: For program point L192-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,455 INFO L268 CegarLoopResult]: For program point L159-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,455 INFO L268 CegarLoopResult]: For program point L126-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,455 INFO L268 CegarLoopResult]: For program point L93-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,455 INFO L268 CegarLoopResult]: For program point L60-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,455 INFO L268 CegarLoopResult]: For program point L27-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,455 INFO L268 CegarLoopResult]: For program point L523(lines 523 572) no Hoare annotation was computed. [2020-07-20 22:07:41,455 INFO L268 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2020-07-20 22:07:41,455 INFO L268 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-07-20 22:07:41,456 INFO L268 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-07-20 22:07:41,456 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-07-20 22:07:41,456 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-07-20 22:07:41,456 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-07-20 22:07:41,456 INFO L268 CegarLoopResult]: For program point L557(lines 557 572) no Hoare annotation was computed. [2020-07-20 22:07:41,456 INFO L268 CegarLoopResult]: For program point L425(lines 425 572) no Hoare annotation was computed. [2020-07-20 22:07:41,456 INFO L268 CegarLoopResult]: For program point L326(lines 326 572) no Hoare annotation was computed. [2020-07-20 22:07:41,456 INFO L268 CegarLoopResult]: For program point L260(lines 260 572) no Hoare annotation was computed. [2020-07-20 22:07:41,456 INFO L268 CegarLoopResult]: For program point L393(lines 393 572) no Hoare annotation was computed. [2020-07-20 22:07:41,457 INFO L268 CegarLoopResult]: For program point L360(lines 360 572) no Hoare annotation was computed. [2020-07-20 22:07:41,457 INFO L268 CegarLoopResult]: For program point L195-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,457 INFO L268 CegarLoopResult]: For program point L162-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,457 INFO L268 CegarLoopResult]: For program point L129-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,457 INFO L268 CegarLoopResult]: For program point L96-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,457 INFO L268 CegarLoopResult]: For program point L63-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,457 INFO L268 CegarLoopResult]: For program point L30-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,457 INFO L268 CegarLoopResult]: For program point L526(lines 526 572) no Hoare annotation was computed. [2020-07-20 22:07:41,457 INFO L268 CegarLoopResult]: For program point L493(lines 493 572) no Hoare annotation was computed. [2020-07-20 22:07:41,457 INFO L268 CegarLoopResult]: For program point L460(lines 460 572) no Hoare annotation was computed. [2020-07-20 22:07:41,458 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-07-20 22:07:41,458 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-07-20 22:07:41,458 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-07-20 22:07:41,458 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-07-20 22:07:41,458 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-07-20 22:07:41,458 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-20 22:07:41,458 INFO L268 CegarLoopResult]: For program point L329(lines 329 572) no Hoare annotation was computed. [2020-07-20 22:07:41,458 INFO L268 CegarLoopResult]: For program point L296(lines 296 572) no Hoare annotation was computed. [2020-07-20 22:07:41,458 INFO L268 CegarLoopResult]: For program point L231(lines 231 572) no Hoare annotation was computed. [2020-07-20 22:07:41,459 INFO L268 CegarLoopResult]: For program point L198-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,459 INFO L268 CegarLoopResult]: For program point L165-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,459 INFO L268 CegarLoopResult]: For program point L132-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,459 INFO L268 CegarLoopResult]: For program point L99-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,459 INFO L268 CegarLoopResult]: For program point L66-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,459 INFO L268 CegarLoopResult]: For program point L33-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:07:41,459 INFO L268 CegarLoopResult]: For program point L529(lines 529 572) no Hoare annotation was computed. [2020-07-20 22:07:41,459 INFO L268 CegarLoopResult]: For program point L430(lines 430 572) no Hoare annotation was computed. [2020-07-20 22:07:41,459 INFO L268 CegarLoopResult]: For program point L265(lines 265 572) no Hoare annotation was computed. [2020-07-20 22:07:41,460 INFO L268 CegarLoopResult]: For program point L199(line 199) no Hoare annotation was computed. [2020-07-20 22:07:41,460 INFO L268 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2020-07-20 22:07:41,460 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-07-20 22:07:41,460 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-07-20 22:07:41,460 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-07-20 22:07:41,460 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-20 22:07:41,460 INFO L268 CegarLoopResult]: For program point L563(lines 563 572) no Hoare annotation was computed. [2020-07-20 22:07:41,460 INFO L268 CegarLoopResult]: For program point L398(lines 398 572) no Hoare annotation was computed. [2020-07-20 22:07:41,460 INFO L268 CegarLoopResult]: For program point L365(lines 365 572) no Hoare annotation was computed. [2020-07-20 22:07:41,460 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 22:07:41,461 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a10~0 0) (<= 9 ~a19~0) (<= ~a1~0 23) (< ~a19~0 10)) [2020-07-20 22:07:41,461 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 22:07:41,461 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 22:07:41,461 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 576 592) the Hoare annotation is: (or (not (< |old(~a19~0)| 10)) (not (<= |old(~a1~0)| 23)) (not (<= |old(~a10~0)| 0)) (not (<= 9 |old(~a19~0)|)) (and (<= 9 ~a19~0) (<= ~a10~0 |old(~a10~0)|) (<= ~a1~0 23) (< ~a19~0 10))) [2020-07-20 22:07:41,461 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 576 592) no Hoare annotation was computed. [2020-07-20 22:07:41,461 INFO L264 CegarLoopResult]: At program point L590(line 590) the Hoare annotation is: (let ((.cse0 (<= ~a19~0 8))) (or (<= ~a10~0 1) (not (< |old(~a19~0)| 10)) (not (<= |old(~a1~0)| 23)) (not (<= |old(~a10~0)| 0)) (not (<= 9 |old(~a19~0)|)) (and (<= 8 ~a19~0) (< ~a19~0 10)) (and .cse0 (<= ~a10~0 3)) (and .cse0 (<= ~a1~0 23)))) [2020-07-20 22:07:41,461 INFO L268 CegarLoopResult]: For program point L590-1(line 590) no Hoare annotation was computed. [2020-07-20 22:07:41,462 INFO L268 CegarLoopResult]: For program point L587(line 587) no Hoare annotation was computed. [2020-07-20 22:07:41,462 INFO L264 CegarLoopResult]: At program point L582-2(lines 582 591) the Hoare annotation is: (let ((.cse0 (<= ~a19~0 8))) (or (<= ~a10~0 1) (not (< |old(~a19~0)| 10)) (not (<= |old(~a1~0)| 23)) (not (<= |old(~a10~0)| 0)) (not (<= 9 |old(~a19~0)|)) (and (<= 8 ~a19~0) (< ~a19~0 10)) (and .cse0 (<= ~a10~0 3)) (and .cse0 (<= ~a1~0 23)))) [2020-07-20 22:07:41,462 INFO L268 CegarLoopResult]: For program point L582-3(lines 576 592) no Hoare annotation was computed. [2020-07-20 22:07:41,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 10:07:41 BoogieIcfgContainer [2020-07-20 22:07:41,485 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 22:07:41,488 INFO L168 Benchmark]: Toolchain (without parser) took 14389.58 ms. Allocated memory was 137.9 MB in the beginning and 399.0 MB in the end (delta: 261.1 MB). Free memory was 99.8 MB in the beginning and 138.5 MB in the end (delta: -38.7 MB). Peak memory consumption was 222.4 MB. Max. memory is 7.1 GB. [2020-07-20 22:07:41,493 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 137.9 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-20 22:07:41,495 INFO L168 Benchmark]: CACSL2BoogieTranslator took 859.64 ms. Allocated memory was 137.9 MB in the beginning and 205.5 MB in the end (delta: 67.6 MB). Free memory was 99.6 MB in the beginning and 171.8 MB in the end (delta: -72.2 MB). Peak memory consumption was 34.6 MB. Max. memory is 7.1 GB. [2020-07-20 22:07:41,495 INFO L168 Benchmark]: Boogie Preprocessor took 107.53 ms. Allocated memory is still 205.5 MB. Free memory was 171.8 MB in the beginning and 166.9 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2020-07-20 22:07:41,496 INFO L168 Benchmark]: RCFGBuilder took 1351.67 ms. Allocated memory was 205.5 MB in the beginning and 238.0 MB in the end (delta: 32.5 MB). Free memory was 166.9 MB in the beginning and 183.3 MB in the end (delta: -16.5 MB). Peak memory consumption was 83.5 MB. Max. memory is 7.1 GB. [2020-07-20 22:07:41,498 INFO L168 Benchmark]: TraceAbstraction took 12064.16 ms. Allocated memory was 238.0 MB in the beginning and 399.0 MB in the end (delta: 161.0 MB). Free memory was 181.9 MB in the beginning and 138.5 MB in the end (delta: 43.4 MB). Peak memory consumption was 204.3 MB. Max. memory is 7.1 GB. [2020-07-20 22:07:41,511 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 137.9 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 859.64 ms. Allocated memory was 137.9 MB in the beginning and 205.5 MB in the end (delta: 67.6 MB). Free memory was 99.6 MB in the beginning and 171.8 MB in the end (delta: -72.2 MB). Peak memory consumption was 34.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.53 ms. Allocated memory is still 205.5 MB. Free memory was 171.8 MB in the beginning and 166.9 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1351.67 ms. Allocated memory was 205.5 MB in the beginning and 238.0 MB in the end (delta: 32.5 MB). Free memory was 166.9 MB in the beginning and 183.3 MB in the end (delta: -16.5 MB). Peak memory consumption was 83.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12064.16 ms. Allocated memory was 238.0 MB in the beginning and 399.0 MB in the end (delta: 161.0 MB). Free memory was 181.9 MB in the beginning and 138.5 MB in the end (delta: 43.4 MB). Peak memory consumption was 204.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 100]: 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: ((((((a10 <= 1 || !(\old(a19) < 10)) || !(\old(a1) <= 23)) || !(\old(a10) <= 0)) || !(9 <= \old(a19))) || (8 <= a19 && a19 < 10)) || (a19 <= 8 && a10 <= 3)) || (a19 <= 8 && a1 <= 23) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.0s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 7.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 316 SDtfs, 1658 SDslu, 142 SDs, 0 SdLazy, 3854 SolverSat, 736 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1653 GetRequests, 1627 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1764occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 467 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 66 PreInvPairs, 112 NumberOfFragments, 263 HoareAnnotationTreeSize, 66 FomulaSimplifications, 1240 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 7 FomulaSimplificationsInter, 884 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 1254 NumberOfCodeBlocks, 1254 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 1640 ConstructedInterpolants, 0 QuantifiedInterpolants, 626882 SizeOfPredicates, 13 NumberOfNonLiveVariables, 2455 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 910/918 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...