/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 NUM_FUNCTIONS --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_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 14:09:33,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 14:09:33,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 14:09:33,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-20 14:09:33,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 14:09:33,677 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 14:09:33,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 14:09:33,681 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 14:09:33,684 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 14:09:33,686 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 14:09:33,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 14:09:33,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 14:09:33,700 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 14:09:33,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 14:09:33,705 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 14:09:33,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 14:09:33,708 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 14:09:33,722 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 14:09:33,747 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 14:09:33,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 14:09:33,749 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 14:09:33,749 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 14:09:33,749 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 14:09:33,750 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 14:09:33,750 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 14:09:33,750 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 14:09:33,750 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 14:09:33,750 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 14:09:33,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 14:09:33,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 14:09:33,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 14:09:33,753 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 14:09:33,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 14:09:33,753 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 14:09:33,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 14:09:33,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 14:09:33,753 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 14:09:33,754 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 14:09:33,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 14:09:33,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 14:09:33,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 14:09:33,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 14:09:33,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 14:09:33,755 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 14:09:33,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:33,755 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 14:09:33,755 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 14:09:33,755 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 -> NUM_FUNCTIONS 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 14:09:34,093 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 14:09:34,115 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 14:09:34,119 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 14:09:34,121 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 14:09:34,121 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 14:09:34,122 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label33.c [2020-07-20 14:09:34,203 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cc9cf9b6/58eefddbe72747649ffa288744c77af4/FLAG32b06ade7 [2020-07-20 14:09:34,783 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 14:09:34,784 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label33.c [2020-07-20 14:09:34,810 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cc9cf9b6/58eefddbe72747649ffa288744c77af4/FLAG32b06ade7 [2020-07-20 14:09:35,058 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cc9cf9b6/58eefddbe72747649ffa288744c77af4 [2020-07-20 14:09:35,067 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 14:09:35,069 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 14:09:35,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 14:09:35,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 14:09:35,075 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 14:09:35,076 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:09:35" (1/1) ... [2020-07-20 14:09:35,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@159a8dcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:09:35, skipping insertion in model container [2020-07-20 14:09:35,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:09:35" (1/1) ... [2020-07-20 14:09:35,088 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 14:09:35,138 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 14:09:35,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:09:35,628 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 14:09:35,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:09:35,850 INFO L208 MainTranslator]: Completed translation [2020-07-20 14:09:35,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:09:35 WrapperNode [2020-07-20 14:09:35,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 14:09:35,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 14:09:35,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 14:09:35,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 14:09:35,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:09:35" (1/1) ... [2020-07-20 14:09:35,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:09:35" (1/1) ... [2020-07-20 14:09:35,890 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:09:35" (1/1) ... [2020-07-20 14:09:35,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:09:35" (1/1) ... [2020-07-20 14:09:35,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:09:35" (1/1) ... [2020-07-20 14:09:35,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:09:35" (1/1) ... [2020-07-20 14:09:35,961 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:09:35" (1/1) ... [2020-07-20 14:09:35,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 14:09:35,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 14:09:35,972 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 14:09:35,972 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 14:09:35,973 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:09:35" (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 14:09:36,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 14:09:36,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 14:09:36,049 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-20 14:09:36,049 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 14:09:36,049 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-20 14:09:36,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 14:09:36,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 14:09:36,050 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 14:09:36,050 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 14:09:36,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 14:09:36,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 14:09:37,423 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 14:09:37,424 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 14:09:37,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:09:37 BoogieIcfgContainer [2020-07-20 14:09:37,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 14:09:37,433 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 14:09:37,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 14:09:37,437 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 14:09:37,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 02:09:35" (1/3) ... [2020-07-20 14:09:37,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31722a6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:09:37, skipping insertion in model container [2020-07-20 14:09:37,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:09:35" (2/3) ... [2020-07-20 14:09:37,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31722a6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:09:37, skipping insertion in model container [2020-07-20 14:09:37,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:09:37" (3/3) ... [2020-07-20 14:09:37,441 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label33.c [2020-07-20 14:09:37,454 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 14:09:37,463 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 14:09:37,478 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 14:09:37,507 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 14:09:37,508 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 14:09:37,508 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 14:09:37,508 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 14:09:37,508 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 14:09:37,509 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 14:09:37,509 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 14:09:37,509 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 14:09:37,537 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-07-20 14:09:37,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-07-20 14:09:37,546 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:09:37,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:09:37,548 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:09:37,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:09:37,555 INFO L82 PathProgramCache]: Analyzing trace with hash -878124393, now seen corresponding path program 1 times [2020-07-20 14:09:37,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:09:37,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890556846] [2020-07-20 14:09:37,566 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 14:09:37,694 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:09:37,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:09:37,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 14:09:37,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:09:37,803 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 14:09:37,803 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:09:37,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890556846] [2020-07-20 14:09:37,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:09:37,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:09:37,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305073511] [2020-07-20 14:09:37,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:09:37,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:09:37,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:09:37,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:09:37,839 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2020-07-20 14:09:38,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:09:38,899 INFO L93 Difference]: Finished difference Result 586 states and 1004 transitions. [2020-07-20 14:09:38,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:09:38,901 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2020-07-20 14:09:38,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:09:38,918 INFO L225 Difference]: With dead ends: 586 [2020-07-20 14:09:38,919 INFO L226 Difference]: Without dead ends: 294 [2020-07-20 14:09:38,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 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 14:09:38,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-07-20 14:09:39,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2020-07-20 14:09:39,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-07-20 14:09:39,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 426 transitions. [2020-07-20 14:09:39,010 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 426 transitions. Word has length 50 [2020-07-20 14:09:39,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:09:39,011 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 426 transitions. [2020-07-20 14:09:39,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:09:39,012 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 426 transitions. [2020-07-20 14:09:39,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-07-20 14:09:39,018 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:09:39,018 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, 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] [2020-07-20 14:09:39,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:39,232 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:09:39,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:09:39,233 INFO L82 PathProgramCache]: Analyzing trace with hash -558558894, now seen corresponding path program 1 times [2020-07-20 14:09:39,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:09:39,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381620127] [2020-07-20 14:09:39,234 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 14:09:39,349 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:09:39,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:09:39,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 14:09:39,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:09:39,413 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:09:39,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:09:39,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381620127] [2020-07-20 14:09:39,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:09:39,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 14:09:39,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792917788] [2020-07-20 14:09:39,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:09:39,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:09:39,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:09:39,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:09:39,440 INFO L87 Difference]: Start difference. First operand 294 states and 426 transitions. Second operand 5 states. [2020-07-20 14:09:40,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:09:40,519 INFO L93 Difference]: Finished difference Result 890 states and 1316 transitions. [2020-07-20 14:09:40,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 14:09:40,519 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-07-20 14:09:40,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:09:40,526 INFO L225 Difference]: With dead ends: 890 [2020-07-20 14:09:40,526 INFO L226 Difference]: Without dead ends: 602 [2020-07-20 14:09:40,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-20 14:09:40,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-07-20 14:09:40,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 590. [2020-07-20 14:09:40,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-07-20 14:09:40,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 775 transitions. [2020-07-20 14:09:40,588 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 775 transitions. Word has length 124 [2020-07-20 14:09:40,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:09:40,590 INFO L479 AbstractCegarLoop]: Abstraction has 590 states and 775 transitions. [2020-07-20 14:09:40,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:09:40,591 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 775 transitions. [2020-07-20 14:09:40,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-07-20 14:09:40,598 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:09:40,599 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, 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] [2020-07-20 14:09:40,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:40,800 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:09:40,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:09:40,801 INFO L82 PathProgramCache]: Analyzing trace with hash -659749739, now seen corresponding path program 1 times [2020-07-20 14:09:40,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:09:40,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260380042] [2020-07-20 14:09:40,803 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 14:09:40,911 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:09:40,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:09:40,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:09:40,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:09:40,952 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:09:40,952 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:09:40,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260380042] [2020-07-20 14:09:40,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:09:40,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:09:40,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937136950] [2020-07-20 14:09:40,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:09:40,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:09:40,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:09:40,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:09:40,955 INFO L87 Difference]: Start difference. First operand 590 states and 775 transitions. Second operand 3 states. [2020-07-20 14:09:41,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:09:41,672 INFO L93 Difference]: Finished difference Result 1462 states and 1992 transitions. [2020-07-20 14:09:41,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:09:41,674 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 129 [2020-07-20 14:09:41,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:09:41,681 INFO L225 Difference]: With dead ends: 1462 [2020-07-20 14:09:41,682 INFO L226 Difference]: Without dead ends: 878 [2020-07-20 14:09:41,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 127 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 14:09:41,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2020-07-20 14:09:41,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2020-07-20 14:09:41,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 878 states. [2020-07-20 14:09:41,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1157 transitions. [2020-07-20 14:09:41,745 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1157 transitions. Word has length 129 [2020-07-20 14:09:41,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:09:41,746 INFO L479 AbstractCegarLoop]: Abstraction has 878 states and 1157 transitions. [2020-07-20 14:09:41,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:09:41,746 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1157 transitions. [2020-07-20 14:09:41,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-07-20 14:09:41,749 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:09:41,750 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, 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] [2020-07-20 14:09:41,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:41,963 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:09:41,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:09:41,964 INFO L82 PathProgramCache]: Analyzing trace with hash -477236875, now seen corresponding path program 1 times [2020-07-20 14:09:41,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:09:41,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480678117] [2020-07-20 14:09:41,965 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 14:09:42,054 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:09:42,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:09:42,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 14:09:42,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:09:42,130 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:09:42,130 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:09:42,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480678117] [2020-07-20 14:09:42,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:09:42,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 14:09:42,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819375916] [2020-07-20 14:09:42,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:09:42,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:09:42,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:09:42,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:09:42,136 INFO L87 Difference]: Start difference. First operand 878 states and 1157 transitions. Second operand 5 states. [2020-07-20 14:09:43,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:09:43,138 INFO L93 Difference]: Finished difference Result 2370 states and 3201 transitions. [2020-07-20 14:09:43,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 14:09:43,142 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-07-20 14:09:43,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:09:43,153 INFO L225 Difference]: With dead ends: 2370 [2020-07-20 14:09:43,153 INFO L226 Difference]: Without dead ends: 1498 [2020-07-20 14:09:43,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-20 14:09:43,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2020-07-20 14:09:43,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1470. [2020-07-20 14:09:43,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1470 states. [2020-07-20 14:09:43,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 1802 transitions. [2020-07-20 14:09:43,228 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 1802 transitions. Word has length 145 [2020-07-20 14:09:43,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:09:43,229 INFO L479 AbstractCegarLoop]: Abstraction has 1470 states and 1802 transitions. [2020-07-20 14:09:43,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:09:43,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 1802 transitions. [2020-07-20 14:09:43,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-07-20 14:09:43,232 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:09:43,232 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:09:43,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:43,446 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:09:43,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:09:43,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1852316358, now seen corresponding path program 1 times [2020-07-20 14:09:43,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:09:43,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735193897] [2020-07-20 14:09:43,448 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 14:09:43,534 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:09:43,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:09:43,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:09:43,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:09:43,573 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:09:43,573 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:09:43,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735193897] [2020-07-20 14:09:43,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:09:43,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:09:43,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13979978] [2020-07-20 14:09:43,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:09:43,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:09:43,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:09:43,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:09:43,577 INFO L87 Difference]: Start difference. First operand 1470 states and 1802 transitions. Second operand 3 states. [2020-07-20 14:09:44,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:09:44,292 INFO L93 Difference]: Finished difference Result 3226 states and 4023 transitions. [2020-07-20 14:09:44,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:09:44,295 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 146 [2020-07-20 14:09:44,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:09:44,307 INFO L225 Difference]: With dead ends: 3226 [2020-07-20 14:09:44,307 INFO L226 Difference]: Without dead ends: 1762 [2020-07-20 14:09:44,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 144 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 14:09:44,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1762 states. [2020-07-20 14:09:44,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1762 to 1762. [2020-07-20 14:09:44,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1762 states. [2020-07-20 14:09:44,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1762 states to 1762 states and 2139 transitions. [2020-07-20 14:09:44,365 INFO L78 Accepts]: Start accepts. Automaton has 1762 states and 2139 transitions. Word has length 146 [2020-07-20 14:09:44,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:09:44,366 INFO L479 AbstractCegarLoop]: Abstraction has 1762 states and 2139 transitions. [2020-07-20 14:09:44,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:09:44,366 INFO L276 IsEmpty]: Start isEmpty. Operand 1762 states and 2139 transitions. [2020-07-20 14:09:44,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-07-20 14:09:44,371 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:09:44,371 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:09:44,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:44,586 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:09:44,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:09:44,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1668431250, now seen corresponding path program 1 times [2020-07-20 14:09:44,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:09:44,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474774589] [2020-07-20 14:09:44,588 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 14:09:44,700 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:09:44,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:09:44,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:09:44,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:09:44,748 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-07-20 14:09:44,749 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:09:44,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1474774589] [2020-07-20 14:09:44,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:09:44,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:09:44,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676001680] [2020-07-20 14:09:44,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:09:44,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:09:44,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:09:44,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:09:44,751 INFO L87 Difference]: Start difference. First operand 1762 states and 2139 transitions. Second operand 3 states. [2020-07-20 14:09:45,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:09:45,492 INFO L93 Difference]: Finished difference Result 3806 states and 4699 transitions. [2020-07-20 14:09:45,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:09:45,492 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2020-07-20 14:09:45,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:09:45,512 INFO L225 Difference]: With dead ends: 3806 [2020-07-20 14:09:45,512 INFO L226 Difference]: Without dead ends: 2050 [2020-07-20 14:09:45,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 215 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 14:09:45,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2050 states. [2020-07-20 14:09:45,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2050 to 2050. [2020-07-20 14:09:45,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2050 states. [2020-07-20 14:09:45,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2050 states to 2050 states and 2517 transitions. [2020-07-20 14:09:45,582 INFO L78 Accepts]: Start accepts. Automaton has 2050 states and 2517 transitions. Word has length 217 [2020-07-20 14:09:45,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:09:45,582 INFO L479 AbstractCegarLoop]: Abstraction has 2050 states and 2517 transitions. [2020-07-20 14:09:45,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:09:45,583 INFO L276 IsEmpty]: Start isEmpty. Operand 2050 states and 2517 transitions. [2020-07-20 14:09:45,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-07-20 14:09:45,589 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:09:45,589 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:09:45,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:45,803 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:09:45,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:09:45,804 INFO L82 PathProgramCache]: Analyzing trace with hash 598789364, now seen corresponding path program 1 times [2020-07-20 14:09:45,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:09:45,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856345737] [2020-07-20 14:09:45,805 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 14:09:45,926 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:09:45,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:09:45,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:09:45,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:09:45,973 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-07-20 14:09:45,973 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:09:45,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856345737] [2020-07-20 14:09:45,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:09:45,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:09:45,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460385341] [2020-07-20 14:09:45,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:09:45,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:09:45,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:09:45,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:09:45,975 INFO L87 Difference]: Start difference. First operand 2050 states and 2517 transitions. Second operand 3 states. [2020-07-20 14:09:46,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:09:46,706 INFO L93 Difference]: Finished difference Result 3206 states and 3989 transitions. [2020-07-20 14:09:46,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:09:46,707 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 233 [2020-07-20 14:09:46,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:09:46,724 INFO L225 Difference]: With dead ends: 3206 [2020-07-20 14:09:46,724 INFO L226 Difference]: Without dead ends: 3204 [2020-07-20 14:09:46,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 231 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 14:09:46,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3204 states. [2020-07-20 14:09:46,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3204 to 2775. [2020-07-20 14:09:46,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2775 states. [2020-07-20 14:09:46,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2775 states to 2775 states and 3490 transitions. [2020-07-20 14:09:46,809 INFO L78 Accepts]: Start accepts. Automaton has 2775 states and 3490 transitions. Word has length 233 [2020-07-20 14:09:46,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:09:46,809 INFO L479 AbstractCegarLoop]: Abstraction has 2775 states and 3490 transitions. [2020-07-20 14:09:46,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:09:46,810 INFO L276 IsEmpty]: Start isEmpty. Operand 2775 states and 3490 transitions. [2020-07-20 14:09:46,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-07-20 14:09:46,817 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:09:46,817 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:09:47,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:47,032 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:09:47,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:09:47,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1991686621, now seen corresponding path program 1 times [2020-07-20 14:09:47,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:09:47,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943022592] [2020-07-20 14:09:47,033 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 14:09:47,223 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:09:47,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:09:47,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:09:47,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:09:47,286 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-07-20 14:09:47,286 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:09:47,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943022592] [2020-07-20 14:09:47,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:09:47,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:09:47,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303881176] [2020-07-20 14:09:47,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:09:47,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:09:47,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:09:47,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:09:47,289 INFO L87 Difference]: Start difference. First operand 2775 states and 3490 transitions. Second operand 3 states. [2020-07-20 14:09:48,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:09:48,024 INFO L93 Difference]: Finished difference Result 5828 states and 7294 transitions. [2020-07-20 14:09:48,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:09:48,024 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 246 [2020-07-20 14:09:48,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:09:48,025 INFO L225 Difference]: With dead ends: 5828 [2020-07-20 14:09:48,026 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 14:09:48,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 244 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 14:09:48,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 14:09:48,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 14:09:48,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 14:09:48,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 14:09:48,041 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 246 [2020-07-20 14:09:48,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:09:48,043 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 14:09:48,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:09:48,043 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 14:09:48,044 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 14:09:48,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:48,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 14:09:48,967 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 45 [2020-07-20 14:09:49,100 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 14:09:49,100 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 14:09:49,101 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 14:09:49,101 INFO L268 CegarLoopResult]: For program point L465(lines 465 572) no Hoare annotation was computed. [2020-07-20 14:09:49,101 INFO L268 CegarLoopResult]: For program point L201-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,101 INFO L268 CegarLoopResult]: For program point L168-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,101 INFO L268 CegarLoopResult]: For program point L135-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,101 INFO L268 CegarLoopResult]: For program point L102-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,102 INFO L268 CegarLoopResult]: For program point L69-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,102 INFO L268 CegarLoopResult]: For program point L36-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,102 INFO L268 CegarLoopResult]: For program point L499(lines 499 572) no Hoare annotation was computed. [2020-07-20 14:09:49,102 INFO L268 CegarLoopResult]: For program point L301(lines 301 572) no Hoare annotation was computed. [2020-07-20 14:09:49,102 INFO L268 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2020-07-20 14:09:49,102 INFO L268 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2020-07-20 14:09:49,103 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-07-20 14:09:49,103 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-07-20 14:09:49,103 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-07-20 14:09:49,103 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-07-20 14:09:49,103 INFO L268 CegarLoopResult]: For program point L335(lines 335 572) no Hoare annotation was computed. [2020-07-20 14:09:49,103 INFO L268 CegarLoopResult]: For program point L236(lines 236 572) no Hoare annotation was computed. [2020-07-20 14:09:49,103 INFO L268 CegarLoopResult]: For program point L534(lines 534 572) no Hoare annotation was computed. [2020-07-20 14:09:49,104 INFO L268 CegarLoopResult]: For program point L171-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,104 INFO L268 CegarLoopResult]: For program point L138-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,104 INFO L268 CegarLoopResult]: For program point L105-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,104 INFO L268 CegarLoopResult]: For program point L72-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,104 INFO L268 CegarLoopResult]: For program point L39-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,104 INFO L268 CegarLoopResult]: For program point L436(lines 436 572) no Hoare annotation was computed. [2020-07-20 14:09:49,105 INFO L268 CegarLoopResult]: For program point L403(lines 403 572) no Hoare annotation was computed. [2020-07-20 14:09:49,105 INFO L268 CegarLoopResult]: For program point L370(lines 370 572) no Hoare annotation was computed. [2020-07-20 14:09:49,105 INFO L268 CegarLoopResult]: For program point L271(lines 271 572) no Hoare annotation was computed. [2020-07-20 14:09:49,105 INFO L268 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2020-07-20 14:09:49,105 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-07-20 14:09:49,105 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-07-20 14:09:49,105 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-07-20 14:09:49,105 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-07-20 14:09:49,106 INFO L268 CegarLoopResult]: For program point L569(lines 569 572) no Hoare annotation was computed. [2020-07-20 14:09:49,106 INFO L268 CegarLoopResult]: For program point L239(lines 239 572) no Hoare annotation was computed. [2020-07-20 14:09:49,106 INFO L268 CegarLoopResult]: For program point L504(lines 504 572) no Hoare annotation was computed. [2020-07-20 14:09:49,106 INFO L268 CegarLoopResult]: For program point L471(lines 471 572) no Hoare annotation was computed. [2020-07-20 14:09:49,106 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 136) no Hoare annotation was computed. [2020-07-20 14:09:49,106 INFO L268 CegarLoopResult]: For program point L306(lines 306 572) no Hoare annotation was computed. [2020-07-20 14:09:49,106 INFO L268 CegarLoopResult]: For program point L174-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,107 INFO L268 CegarLoopResult]: For program point L141-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,107 INFO L268 CegarLoopResult]: For program point L108-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,107 INFO L268 CegarLoopResult]: For program point L75-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,107 INFO L268 CegarLoopResult]: For program point L42-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,107 INFO L268 CegarLoopResult]: For program point L340(lines 340 572) no Hoare annotation was computed. [2020-07-20 14:09:49,107 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-20 14:09:49,107 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-07-20 14:09:49,107 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-07-20 14:09:49,107 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-07-20 14:09:49,108 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-07-20 14:09:49,108 INFO L268 CegarLoopResult]: For program point L540(lines 540 572) no Hoare annotation was computed. [2020-07-20 14:09:49,108 INFO L268 CegarLoopResult]: For program point L408(lines 408 572) no Hoare annotation was computed. [2020-07-20 14:09:49,108 INFO L268 CegarLoopResult]: For program point L375(lines 375 572) no Hoare annotation was computed. [2020-07-20 14:09:49,108 INFO L268 CegarLoopResult]: For program point L210(lines 210 572) no Hoare annotation was computed. [2020-07-20 14:09:49,108 INFO L268 CegarLoopResult]: For program point L177-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,108 INFO L268 CegarLoopResult]: For program point L144-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,108 INFO L268 CegarLoopResult]: For program point L111-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,109 INFO L268 CegarLoopResult]: For program point L78-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,109 INFO L268 CegarLoopResult]: For program point L45-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,109 INFO L268 CegarLoopResult]: For program point L442(lines 442 572) no Hoare annotation was computed. [2020-07-20 14:09:49,109 INFO L268 CegarLoopResult]: For program point L277(lines 277 572) no Hoare annotation was computed. [2020-07-20 14:09:49,109 INFO L268 CegarLoopResult]: For program point L244(lines 244 572) no Hoare annotation was computed. [2020-07-20 14:09:49,109 INFO L268 CegarLoopResult]: For program point L178(line 178) no Hoare annotation was computed. [2020-07-20 14:09:49,109 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-07-20 14:09:49,109 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-07-20 14:09:49,109 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-07-20 14:09:49,110 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-20 14:09:49,110 INFO L268 CegarLoopResult]: For program point L509(lines 509 572) no Hoare annotation was computed. [2020-07-20 14:09:49,110 INFO L268 CegarLoopResult]: For program point L476(lines 476 572) no Hoare annotation was computed. [2020-07-20 14:09:49,110 INFO L268 CegarLoopResult]: For program point L378(lines 378 572) no Hoare annotation was computed. [2020-07-20 14:09:49,110 INFO L268 CegarLoopResult]: For program point L345(lines 345 572) no Hoare annotation was computed. [2020-07-20 14:09:49,110 INFO L268 CegarLoopResult]: For program point L312(lines 312 572) no Hoare annotation was computed. [2020-07-20 14:09:49,110 INFO L268 CegarLoopResult]: For program point L180-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,111 INFO L268 CegarLoopResult]: For program point L147-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,111 INFO L268 CegarLoopResult]: For program point L114-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,111 INFO L268 CegarLoopResult]: For program point L81-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,111 INFO L268 CegarLoopResult]: For program point L48-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,111 INFO L268 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2020-07-20 14:09:49,111 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-07-20 14:09:49,111 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-20 14:09:49,111 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-07-20 14:09:49,111 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-07-20 14:09:49,111 INFO L268 CegarLoopResult]: For program point L545(lines 545 572) no Hoare annotation was computed. [2020-07-20 14:09:49,111 INFO L268 CegarLoopResult]: For program point L215(lines 215 572) no Hoare annotation was computed. [2020-07-20 14:09:49,112 INFO L268 CegarLoopResult]: For program point L414(lines 414 572) no Hoare annotation was computed. [2020-07-20 14:09:49,112 INFO L268 CegarLoopResult]: For program point L249(lines 249 572) no Hoare annotation was computed. [2020-07-20 14:09:49,112 INFO L268 CegarLoopResult]: For program point L183-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,112 INFO L268 CegarLoopResult]: For program point L150-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,112 INFO L268 CegarLoopResult]: For program point L117-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,112 INFO L268 CegarLoopResult]: For program point L84-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,112 INFO L268 CegarLoopResult]: For program point L51-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,112 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,112 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,112 INFO L268 CegarLoopResult]: For program point L514(lines 514 572) no Hoare annotation was computed. [2020-07-20 14:09:49,112 INFO L268 CegarLoopResult]: For program point L481(lines 481 572) no Hoare annotation was computed. [2020-07-20 14:09:49,112 INFO L268 CegarLoopResult]: For program point L448(lines 448 572) no Hoare annotation was computed. [2020-07-20 14:09:49,113 INFO L268 CegarLoopResult]: For program point L283(lines 283 572) no Hoare annotation was computed. [2020-07-20 14:09:49,113 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-07-20 14:09:49,113 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-07-20 14:09:49,113 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-07-20 14:09:49,113 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-07-20 14:09:49,113 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-07-20 14:09:49,113 INFO L268 CegarLoopResult]: For program point L548(lines 548 572) no Hoare annotation was computed. [2020-07-20 14:09:49,113 INFO L268 CegarLoopResult]: For program point L383(lines 383 572) no Hoare annotation was computed. [2020-07-20 14:09:49,113 INFO L268 CegarLoopResult]: For program point L317(lines 317 572) no Hoare annotation was computed. [2020-07-20 14:09:49,113 INFO L268 CegarLoopResult]: For program point L351(lines 351 572) no Hoare annotation was computed. [2020-07-20 14:09:49,113 INFO L268 CegarLoopResult]: For program point L186-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,114 INFO L268 CegarLoopResult]: For program point L153-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,114 INFO L268 CegarLoopResult]: For program point L120-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,114 INFO L268 CegarLoopResult]: For program point L87-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,114 INFO L268 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-07-20 14:09:49,114 INFO L268 CegarLoopResult]: For program point L54-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,114 INFO L268 CegarLoopResult]: For program point L21-2(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,114 INFO L268 CegarLoopResult]: For program point L517(lines 517 572) no Hoare annotation was computed. [2020-07-20 14:09:49,114 INFO L268 CegarLoopResult]: For program point L286(lines 286 572) no Hoare annotation was computed. [2020-07-20 14:09:49,115 INFO L268 CegarLoopResult]: For program point L220(lines 220 572) no Hoare annotation was computed. [2020-07-20 14:09:49,115 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-20 14:09:49,115 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-07-20 14:09:49,115 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-07-20 14:09:49,115 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-07-20 14:09:49,115 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-07-20 14:09:49,115 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-20 14:09:49,115 INFO L268 CegarLoopResult]: For program point L419(lines 419 572) no Hoare annotation was computed. [2020-07-20 14:09:49,115 INFO L268 CegarLoopResult]: For program point L320(lines 320 572) no Hoare annotation was computed. [2020-07-20 14:09:49,115 INFO L268 CegarLoopResult]: For program point L254(lines 254 572) no Hoare annotation was computed. [2020-07-20 14:09:49,115 INFO L268 CegarLoopResult]: For program point L354(lines 354 572) no Hoare annotation was computed. [2020-07-20 14:09:49,115 INFO L268 CegarLoopResult]: For program point L189-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,116 INFO L268 CegarLoopResult]: For program point L156-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,116 INFO L268 CegarLoopResult]: For program point L123-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,116 INFO L268 CegarLoopResult]: For program point L90-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,116 INFO L268 CegarLoopResult]: For program point L57-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,116 INFO L268 CegarLoopResult]: For program point L24-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,116 INFO L268 CegarLoopResult]: For program point L487(lines 487 572) no Hoare annotation was computed. [2020-07-20 14:09:49,116 INFO L268 CegarLoopResult]: For program point L454(lines 454 572) no Hoare annotation was computed. [2020-07-20 14:09:49,116 INFO L268 CegarLoopResult]: For program point L388(lines 388 572) no Hoare annotation was computed. [2020-07-20 14:09:49,116 INFO L268 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2020-07-20 14:09:49,116 INFO L268 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2020-07-20 14:09:49,116 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-07-20 14:09:49,116 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-07-20 14:09:49,116 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-07-20 14:09:49,117 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-20 14:09:49,117 INFO L268 CegarLoopResult]: For program point L554(lines 554 572) no Hoare annotation was computed. [2020-07-20 14:09:49,117 INFO L268 CegarLoopResult]: For program point L323(lines 323 572) no Hoare annotation was computed. [2020-07-20 14:09:49,117 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 20 574) the Hoare annotation is: (let ((.cse9 (<= ~a10~0 |old(~a10~0)|)) (.cse10 (<= ~a19~0 |old(~a19~0)|))) (let ((.cse1 (and (<= 9 ~a19~0) .cse9 .cse10)) (.cse5 (not (<= |old(~a10~0)| 1))) (.cse0 (not (<= 9 |old(~a19~0)|))) (.cse6 (and .cse9 .cse10)) (.cse7 (not (<= |old(~a10~0)| 2))) (.cse8 (not (<= 4 |old(~a10~0)|))) (.cse3 (not (<= |old(~a1~0)| 23))) (.cse4 (<= ~a1~0 23)) (.cse2 (not (<= |old(~a19~0)| 9)))) (and (or .cse0 .cse1 .cse2) (or .cse3 .cse4 .cse5) (or (not (<= |old(~a19~0)| 6)) .cse6) (or .cse0 .cse1 .cse5) (or .cse3 .cse4 .cse2 .cse7) (or .cse3 .cse4 .cse0 .cse2) (or .cse6 .cse2 .cse7) (or .cse8 .cse2 (and .cse9 .cse10 (<= 4 ~a10~0))) (or .cse8 .cse3 .cse4 .cse2)))) [2020-07-20 14:09:49,117 INFO L268 CegarLoopResult]: For program point L357(lines 357 572) no Hoare annotation was computed. [2020-07-20 14:09:49,117 INFO L268 CegarLoopResult]: For program point L291(lines 291 572) no Hoare annotation was computed. [2020-07-20 14:09:49,117 INFO L268 CegarLoopResult]: For program point L225(lines 225 572) no Hoare annotation was computed. [2020-07-20 14:09:49,117 INFO L268 CegarLoopResult]: For program point L192-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,117 INFO L268 CegarLoopResult]: For program point L159-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,117 INFO L268 CegarLoopResult]: For program point L126-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,118 INFO L268 CegarLoopResult]: For program point L93-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,118 INFO L268 CegarLoopResult]: For program point L60-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,118 INFO L268 CegarLoopResult]: For program point L27-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,118 INFO L268 CegarLoopResult]: For program point L523(lines 523 572) no Hoare annotation was computed. [2020-07-20 14:09:49,118 INFO L268 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2020-07-20 14:09:49,118 INFO L268 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-07-20 14:09:49,118 INFO L268 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-07-20 14:09:49,118 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-07-20 14:09:49,119 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-07-20 14:09:49,119 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-07-20 14:09:49,119 INFO L268 CegarLoopResult]: For program point L557(lines 557 572) no Hoare annotation was computed. [2020-07-20 14:09:49,119 INFO L268 CegarLoopResult]: For program point L425(lines 425 572) no Hoare annotation was computed. [2020-07-20 14:09:49,119 INFO L268 CegarLoopResult]: For program point L326(lines 326 572) no Hoare annotation was computed. [2020-07-20 14:09:49,119 INFO L268 CegarLoopResult]: For program point L260(lines 260 572) no Hoare annotation was computed. [2020-07-20 14:09:49,119 INFO L268 CegarLoopResult]: For program point L393(lines 393 572) no Hoare annotation was computed. [2020-07-20 14:09:49,119 INFO L268 CegarLoopResult]: For program point L360(lines 360 572) no Hoare annotation was computed. [2020-07-20 14:09:49,119 INFO L268 CegarLoopResult]: For program point L195-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,120 INFO L268 CegarLoopResult]: For program point L162-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,120 INFO L268 CegarLoopResult]: For program point L129-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,120 INFO L268 CegarLoopResult]: For program point L96-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,120 INFO L268 CegarLoopResult]: For program point L63-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,120 INFO L268 CegarLoopResult]: For program point L30-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,120 INFO L268 CegarLoopResult]: For program point L526(lines 526 572) no Hoare annotation was computed. [2020-07-20 14:09:49,120 INFO L268 CegarLoopResult]: For program point L493(lines 493 572) no Hoare annotation was computed. [2020-07-20 14:09:49,120 INFO L268 CegarLoopResult]: For program point L460(lines 460 572) no Hoare annotation was computed. [2020-07-20 14:09:49,120 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-07-20 14:09:49,121 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-07-20 14:09:49,121 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-07-20 14:09:49,121 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-07-20 14:09:49,121 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-07-20 14:09:49,121 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-20 14:09:49,121 INFO L268 CegarLoopResult]: For program point L329(lines 329 572) no Hoare annotation was computed. [2020-07-20 14:09:49,121 INFO L268 CegarLoopResult]: For program point L296(lines 296 572) no Hoare annotation was computed. [2020-07-20 14:09:49,121 INFO L268 CegarLoopResult]: For program point L231(lines 231 572) no Hoare annotation was computed. [2020-07-20 14:09:49,122 INFO L268 CegarLoopResult]: For program point L198-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,122 INFO L268 CegarLoopResult]: For program point L165-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,122 INFO L268 CegarLoopResult]: For program point L132-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,122 INFO L268 CegarLoopResult]: For program point L99-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,122 INFO L268 CegarLoopResult]: For program point L66-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,122 INFO L268 CegarLoopResult]: For program point L33-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:49,122 INFO L268 CegarLoopResult]: For program point L529(lines 529 572) no Hoare annotation was computed. [2020-07-20 14:09:49,122 INFO L268 CegarLoopResult]: For program point L430(lines 430 572) no Hoare annotation was computed. [2020-07-20 14:09:49,122 INFO L268 CegarLoopResult]: For program point L265(lines 265 572) no Hoare annotation was computed. [2020-07-20 14:09:49,122 INFO L268 CegarLoopResult]: For program point L199(line 199) no Hoare annotation was computed. [2020-07-20 14:09:49,122 INFO L268 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2020-07-20 14:09:49,122 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-07-20 14:09:49,122 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-07-20 14:09:49,122 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-07-20 14:09:49,123 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-20 14:09:49,123 INFO L268 CegarLoopResult]: For program point L563(lines 563 572) no Hoare annotation was computed. [2020-07-20 14:09:49,123 INFO L268 CegarLoopResult]: For program point L398(lines 398 572) no Hoare annotation was computed. [2020-07-20 14:09:49,123 INFO L268 CegarLoopResult]: For program point L365(lines 365 572) no Hoare annotation was computed. [2020-07-20 14:09:49,123 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 14:09:49,123 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a10~0 0) (<= ~a19~0 9) (<= 9 ~a19~0) (<= ~a1~0 23)) [2020-07-20 14:09:49,123 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 14:09:49,123 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 14:09:49,123 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 576 592) the Hoare annotation is: (or (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 |old(~a19~0)|)) (not (<= |old(~a19~0)| 9))) [2020-07-20 14:09:49,123 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 576 592) no Hoare annotation was computed. [2020-07-20 14:09:49,123 INFO L264 CegarLoopResult]: At program point L590(line 590) the Hoare annotation is: (let ((.cse0 (<= ~a19~0 9))) (or (<= ~a10~0 1) (not (<= |old(~a1~0)| 23)) (<= ~a19~0 6) (and .cse0 (<= 4 ~a10~0)) (not (<= |old(~a10~0)| 0)) (not (<= 9 |old(~a19~0)|)) (and .cse0 (<= ~a10~0 2)) (not (<= |old(~a19~0)| 9)) (and (<= 9 ~a19~0) .cse0))) [2020-07-20 14:09:49,124 INFO L268 CegarLoopResult]: For program point L590-1(line 590) no Hoare annotation was computed. [2020-07-20 14:09:49,124 INFO L268 CegarLoopResult]: For program point L587(line 587) no Hoare annotation was computed. [2020-07-20 14:09:49,124 INFO L264 CegarLoopResult]: At program point L582-2(lines 582 591) the Hoare annotation is: (let ((.cse0 (<= ~a19~0 9))) (or (<= ~a10~0 1) (not (<= |old(~a1~0)| 23)) (<= ~a19~0 6) (and .cse0 (<= 4 ~a10~0)) (not (<= |old(~a10~0)| 0)) (not (<= 9 |old(~a19~0)|)) (and .cse0 (<= ~a10~0 2)) (not (<= |old(~a19~0)| 9)) (and (<= 9 ~a19~0) .cse0))) [2020-07-20 14:09:49,124 INFO L268 CegarLoopResult]: For program point L582-3(lines 576 592) no Hoare annotation was computed. [2020-07-20 14:09:49,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 02:09:49 BoogieIcfgContainer [2020-07-20 14:09:49,144 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 14:09:49,146 INFO L168 Benchmark]: Toolchain (without parser) took 14078.14 ms. Allocated memory was 147.8 MB in the beginning and 383.8 MB in the end (delta: 235.9 MB). Free memory was 102.4 MB in the beginning and 132.5 MB in the end (delta: -30.1 MB). Peak memory consumption was 205.9 MB. Max. memory is 7.1 GB. [2020-07-20 14:09:49,147 INFO L168 Benchmark]: CDTParser took 0.64 ms. Allocated memory is still 147.8 MB. Free memory was 122.8 MB in the beginning and 122.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 14:09:49,148 INFO L168 Benchmark]: CACSL2BoogieTranslator took 780.42 ms. Allocated memory was 147.8 MB in the beginning and 206.6 MB in the end (delta: 58.7 MB). Free memory was 102.0 MB in the beginning and 173.4 MB in the end (delta: -71.4 MB). Peak memory consumption was 31.5 MB. Max. memory is 7.1 GB. [2020-07-20 14:09:49,149 INFO L168 Benchmark]: Boogie Preprocessor took 119.69 ms. Allocated memory is still 206.6 MB. Free memory was 173.4 MB in the beginning and 168.1 MB in the end (delta: 5.3 MB). Peak memory consumption was 5.3 MB. Max. memory is 7.1 GB. [2020-07-20 14:09:49,150 INFO L168 Benchmark]: RCFGBuilder took 1459.50 ms. Allocated memory was 206.6 MB in the beginning and 235.9 MB in the end (delta: 29.4 MB). Free memory was 168.1 MB in the beginning and 175.2 MB in the end (delta: -7.0 MB). Peak memory consumption was 77.9 MB. Max. memory is 7.1 GB. [2020-07-20 14:09:49,151 INFO L168 Benchmark]: TraceAbstraction took 11711.55 ms. Allocated memory was 235.9 MB in the beginning and 383.8 MB in the end (delta: 147.8 MB). Free memory was 175.2 MB in the beginning and 132.5 MB in the end (delta: 42.7 MB). Peak memory consumption was 190.5 MB. Max. memory is 7.1 GB. [2020-07-20 14:09:49,154 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.64 ms. Allocated memory is still 147.8 MB. Free memory was 122.8 MB in the beginning and 122.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 780.42 ms. Allocated memory was 147.8 MB in the beginning and 206.6 MB in the end (delta: 58.7 MB). Free memory was 102.0 MB in the beginning and 173.4 MB in the end (delta: -71.4 MB). Peak memory consumption was 31.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.69 ms. Allocated memory is still 206.6 MB. Free memory was 173.4 MB in the beginning and 168.1 MB in the end (delta: 5.3 MB). Peak memory consumption was 5.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1459.50 ms. Allocated memory was 206.6 MB in the beginning and 235.9 MB in the end (delta: 29.4 MB). Free memory was 168.1 MB in the beginning and 175.2 MB in the end (delta: -7.0 MB). Peak memory consumption was 77.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11711.55 ms. Allocated memory was 235.9 MB in the beginning and 383.8 MB in the end (delta: 147.8 MB). Free memory was 175.2 MB in the beginning and 132.5 MB in the end (delta: 42.7 MB). Peak memory consumption was 190.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 136]: 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(a1) <= 23)) || a19 <= 6) || (a19 <= 9 && 4 <= a10)) || !(\old(a10) <= 0)) || !(9 <= \old(a19))) || (a19 <= 9 && a10 <= 2)) || !(\old(a19) <= 9)) || (9 <= a19 && a19 <= 9) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.7s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 6.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 681 SDtfs, 1374 SDslu, 134 SDs, 0 SdLazy, 3432 SolverSat, 681 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1288 GetRequests, 1270 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2775occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 469 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 81 PreInvPairs, 123 NumberOfFragments, 285 HoareAnnotationTreeSize, 81 FomulaSimplifications, 1537 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 7 FomulaSimplificationsInter, 720 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 1290 NumberOfCodeBlocks, 1290 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 1282 ConstructedInterpolants, 0 QuantifiedInterpolants, 376824 SizeOfPredicates, 15 NumberOfNonLiveVariables, 2454 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 654/654 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...