/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 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 13:55:09,885 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-21 13:55:09,935 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 13:55:09,937 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 13:55:09,940 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 13:55:09,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 13:55:09,943 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 13:55:09,944 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 13:55:09,947 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 13:55:09,953 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 13:55:09,960 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 13:55:09,964 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 13:55:09,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 13:55:09,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 13:55:09,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 13:55:09,982 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 13:55:09,983 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 13:55:09,985 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 13:55:09,986 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 13:55:10,014 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 13:55:10,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 13:55:10,016 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 13:55:10,016 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 13:55:10,016 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 13:55:10,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 13:55:10,017 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 13:55:10,017 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 13:55:10,017 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 13:55:10,017 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 13:55:10,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 13:55:10,018 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 13:55:10,018 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 13:55:10,018 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 13:55:10,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 13:55:10,018 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 13:55:10,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 13:55:10,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 13:55:10,019 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 13:55:10,019 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 13:55:10,019 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 13:55:10,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 13:55:10,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 13:55:10,020 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 13:55:10,020 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 13:55:10,020 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 13:55:10,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:55:10,021 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 13:55:10,021 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 13:55:10,021 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 -> 2 [2020-07-21 13:55:10,298 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 13:55:10,312 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 13:55:10,316 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 13:55:10,317 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 13:55:10,317 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 13:55:10,318 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label54.c [2020-07-21 13:55:10,384 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4110c0259/dd56c8260c52448ba9aae2ee6fdbc1be/FLAG85dff37ef [2020-07-21 13:55:10,950 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 13:55:10,952 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label54.c [2020-07-21 13:55:10,964 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4110c0259/dd56c8260c52448ba9aae2ee6fdbc1be/FLAG85dff37ef [2020-07-21 13:55:11,241 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4110c0259/dd56c8260c52448ba9aae2ee6fdbc1be [2020-07-21 13:55:11,249 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 13:55:11,252 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 13:55:11,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 13:55:11,253 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 13:55:11,257 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 13:55:11,258 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:55:11" (1/1) ... [2020-07-21 13:55:11,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15ad3b8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:11, skipping insertion in model container [2020-07-21 13:55:11,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:55:11" (1/1) ... [2020-07-21 13:55:11,269 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 13:55:11,312 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 13:55:11,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 13:55:11,827 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 13:55:11,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 13:55:11,944 INFO L208 MainTranslator]: Completed translation [2020-07-21 13:55:11,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:11 WrapperNode [2020-07-21 13:55:11,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 13:55:11,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 13:55:11,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 13:55:11,946 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 13:55:11,961 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:11" (1/1) ... [2020-07-21 13:55:11,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:11" (1/1) ... [2020-07-21 13:55:11,979 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:11" (1/1) ... [2020-07-21 13:55:11,979 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:11" (1/1) ... [2020-07-21 13:55:12,016 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:11" (1/1) ... [2020-07-21 13:55:12,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:11" (1/1) ... [2020-07-21 13:55:12,038 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:11" (1/1) ... [2020-07-21 13:55:12,047 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 13:55:12,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 13:55:12,048 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 13:55:12,048 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 13:55:12,049 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 13:55:12,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 13:55:12,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 13:55:12,130 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 13:55:12,130 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 13:55:12,131 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 13:55:12,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 13:55:12,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 13:55:12,132 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 13:55:12,132 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 13:55:12,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 13:55:12,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 13:55:13,356 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 13:55:13,357 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 13:55:13,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:55:13 BoogieIcfgContainer [2020-07-21 13:55:13,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 13:55:13,368 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 13:55:13,368 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 13:55:13,371 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 13:55:13,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:55:11" (1/3) ... [2020-07-21 13:55:13,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc3f62e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:55:13, skipping insertion in model container [2020-07-21 13:55:13,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:11" (2/3) ... [2020-07-21 13:55:13,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc3f62e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:55:13, skipping insertion in model container [2020-07-21 13:55:13,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:55:13" (3/3) ... [2020-07-21 13:55:13,380 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label54.c [2020-07-21 13:55:13,392 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 13:55:13,405 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 13:55:13,422 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 13:55:13,460 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 13:55:13,461 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 13:55:13,462 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 13:55:13,462 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 13:55:13,463 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 13:55:13,463 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 13:55:13,463 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 13:55:13,463 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 13:55:13,492 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-07-21 13:55:13,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-07-21 13:55:13,509 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:55:13,510 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:55:13,511 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:55:13,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:55:13,518 INFO L82 PathProgramCache]: Analyzing trace with hash 664864703, now seen corresponding path program 1 times [2020-07-21 13:55:13,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:55:13,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600742601] [2020-07-21 13:55:13,529 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:55:13,695 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:55:13,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:55:13,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 13:55:13,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:55:13,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:55:13,779 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:55:13,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600742601] [2020-07-21 13:55:13,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:55:13,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:55:13,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905427370] [2020-07-21 13:55:13,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:55:13,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:55:13,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:55:13,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:55:13,804 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2020-07-21 13:55:14,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:55:14,856 INFO L93 Difference]: Finished difference Result 586 states and 1004 transitions. [2020-07-21 13:55:14,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:55:14,859 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-07-21 13:55:14,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:55:14,892 INFO L225 Difference]: With dead ends: 586 [2020-07-21 13:55:14,892 INFO L226 Difference]: Without dead ends: 294 [2020-07-21 13:55:14,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:55:14,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-07-21 13:55:15,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2020-07-21 13:55:15,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-07-21 13:55:15,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 426 transitions. [2020-07-21 13:55:15,017 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 426 transitions. Word has length 68 [2020-07-21 13:55:15,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:55:15,018 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 426 transitions. [2020-07-21 13:55:15,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:55:15,018 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 426 transitions. [2020-07-21 13:55:15,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-07-21 13:55:15,033 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:55:15,034 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, 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] [2020-07-21 13:55:15,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:55:15,248 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:55:15,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:55:15,249 INFO L82 PathProgramCache]: Analyzing trace with hash -2130973542, now seen corresponding path program 1 times [2020-07-21 13:55:15,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:55:15,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480941787] [2020-07-21 13:55:15,250 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:55:15,342 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:55:15,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:55:15,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 13:55:15,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:55:15,440 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:55:15,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:55:15,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480941787] [2020-07-21 13:55:15,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:55:15,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 13:55:15,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261485009] [2020-07-21 13:55:15,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 13:55:15,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:55:15,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 13:55:15,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 13:55:15,445 INFO L87 Difference]: Start difference. First operand 294 states and 426 transitions. Second operand 5 states. [2020-07-21 13:55:16,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:55:16,488 INFO L93 Difference]: Finished difference Result 890 states and 1316 transitions. [2020-07-21 13:55:16,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 13:55:16,488 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-07-21 13:55:16,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:55:16,493 INFO L225 Difference]: With dead ends: 890 [2020-07-21 13:55:16,494 INFO L226 Difference]: Without dead ends: 602 [2020-07-21 13:55:16,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-21 13:55:16,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-07-21 13:55:16,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 590. [2020-07-21 13:55:16,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-07-21 13:55:16,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 775 transitions. [2020-07-21 13:55:16,529 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 775 transitions. Word has length 142 [2020-07-21 13:55:16,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:55:16,530 INFO L479 AbstractCegarLoop]: Abstraction has 590 states and 775 transitions. [2020-07-21 13:55:16,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 13:55:16,530 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 775 transitions. [2020-07-21 13:55:16,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-07-21 13:55:16,533 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:55:16,533 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, 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] [2020-07-21 13:55:16,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:55:16,739 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:55:16,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:55:16,740 INFO L82 PathProgramCache]: Analyzing trace with hash -628006051, now seen corresponding path program 1 times [2020-07-21 13:55:16,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:55:16,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [422358829] [2020-07-21 13:55:16,741 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:55:16,836 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:55:16,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:55:16,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 13:55:16,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:55:16,899 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:55:16,900 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:55:16,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [422358829] [2020-07-21 13:55:16,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:55:16,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:55:16,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399229660] [2020-07-21 13:55:16,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:55:16,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:55:16,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:55:16,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:55:16,914 INFO L87 Difference]: Start difference. First operand 590 states and 775 transitions. Second operand 3 states. [2020-07-21 13:55:17,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:55:17,652 INFO L93 Difference]: Finished difference Result 1462 states and 1992 transitions. [2020-07-21 13:55:17,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:55:17,656 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2020-07-21 13:55:17,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:55:17,662 INFO L225 Difference]: With dead ends: 1462 [2020-07-21 13:55:17,662 INFO L226 Difference]: Without dead ends: 878 [2020-07-21 13:55:17,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:55:17,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2020-07-21 13:55:17,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2020-07-21 13:55:17,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 878 states. [2020-07-21 13:55:17,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1157 transitions. [2020-07-21 13:55:17,720 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1157 transitions. Word has length 147 [2020-07-21 13:55:17,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:55:17,720 INFO L479 AbstractCegarLoop]: Abstraction has 878 states and 1157 transitions. [2020-07-21 13:55:17,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:55:17,721 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1157 transitions. [2020-07-21 13:55:17,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-07-21 13:55:17,729 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:55:17,729 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, 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] [2020-07-21 13:55:17,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:55:17,932 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:55:17,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:55:17,932 INFO L82 PathProgramCache]: Analyzing trace with hash -783902659, now seen corresponding path program 1 times [2020-07-21 13:55:17,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:55:17,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067711011] [2020-07-21 13:55:17,934 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:55:18,018 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:55:18,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:55:18,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 13:55:18,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:55:18,093 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:55:18,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:55:18,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067711011] [2020-07-21 13:55:18,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:55:18,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 13:55:18,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367794476] [2020-07-21 13:55:18,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 13:55:18,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:55:18,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 13:55:18,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 13:55:18,097 INFO L87 Difference]: Start difference. First operand 878 states and 1157 transitions. Second operand 5 states. [2020-07-21 13:55:19,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:55:19,072 INFO L93 Difference]: Finished difference Result 2370 states and 3201 transitions. [2020-07-21 13:55:19,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 13:55:19,075 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-07-21 13:55:19,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:55:19,088 INFO L225 Difference]: With dead ends: 2370 [2020-07-21 13:55:19,088 INFO L226 Difference]: Without dead ends: 1498 [2020-07-21 13:55:19,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-21 13:55:19,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2020-07-21 13:55:19,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1470. [2020-07-21 13:55:19,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1470 states. [2020-07-21 13:55:19,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 1802 transitions. [2020-07-21 13:55:19,151 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 1802 transitions. Word has length 163 [2020-07-21 13:55:19,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:55:19,152 INFO L479 AbstractCegarLoop]: Abstraction has 1470 states and 1802 transitions. [2020-07-21 13:55:19,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 13:55:19,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 1802 transitions. [2020-07-21 13:55:19,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-07-21 13:55:19,155 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:55:19,155 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, 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] [2020-07-21 13:55:19,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:55:19,370 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:55:19,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:55:19,371 INFO L82 PathProgramCache]: Analyzing trace with hash -951412466, now seen corresponding path program 1 times [2020-07-21 13:55:19,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:55:19,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [657831614] [2020-07-21 13:55:19,372 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:55:19,455 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:55:19,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:55:19,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 13:55:19,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:55:19,494 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:55:19,495 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:55:19,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [657831614] [2020-07-21 13:55:19,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:55:19,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:55:19,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511040909] [2020-07-21 13:55:19,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:55:19,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:55:19,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:55:19,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:55:19,497 INFO L87 Difference]: Start difference. First operand 1470 states and 1802 transitions. Second operand 3 states. [2020-07-21 13:55:20,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:55:20,289 INFO L93 Difference]: Finished difference Result 3226 states and 4023 transitions. [2020-07-21 13:55:20,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:55:20,292 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 164 [2020-07-21 13:55:20,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:55:20,304 INFO L225 Difference]: With dead ends: 3226 [2020-07-21 13:55:20,304 INFO L226 Difference]: Without dead ends: 1762 [2020-07-21 13:55:20,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:55:20,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1762 states. [2020-07-21 13:55:20,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1762 to 1762. [2020-07-21 13:55:20,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1762 states. [2020-07-21 13:55:20,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1762 states to 1762 states and 2139 transitions. [2020-07-21 13:55:20,374 INFO L78 Accepts]: Start accepts. Automaton has 1762 states and 2139 transitions. Word has length 164 [2020-07-21 13:55:20,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:55:20,375 INFO L479 AbstractCegarLoop]: Abstraction has 1762 states and 2139 transitions. [2020-07-21 13:55:20,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:55:20,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1762 states and 2139 transitions. [2020-07-21 13:55:20,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-07-21 13:55:20,384 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:55:20,385 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:55:20,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:55:20,599 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:55:20,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:55:20,599 INFO L82 PathProgramCache]: Analyzing trace with hash -465579498, now seen corresponding path program 1 times [2020-07-21 13:55:20,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:55:20,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910893422] [2020-07-21 13:55:20,601 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:55:20,704 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:55:20,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:55:20,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 13:55:20,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:55:20,761 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-07-21 13:55:20,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:55:20,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910893422] [2020-07-21 13:55:20,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:55:20,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:55:20,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058889910] [2020-07-21 13:55:20,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:55:20,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:55:20,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:55:20,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:55:20,764 INFO L87 Difference]: Start difference. First operand 1762 states and 2139 transitions. Second operand 3 states. [2020-07-21 13:55:21,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:55:21,440 INFO L93 Difference]: Finished difference Result 3806 states and 4699 transitions. [2020-07-21 13:55:21,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:55:21,444 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 235 [2020-07-21 13:55:21,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:55:21,453 INFO L225 Difference]: With dead ends: 3806 [2020-07-21 13:55:21,454 INFO L226 Difference]: Without dead ends: 2050 [2020-07-21 13:55:21,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:55:21,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2050 states. [2020-07-21 13:55:21,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2050 to 2050. [2020-07-21 13:55:21,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2050 states. [2020-07-21 13:55:21,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2050 states to 2050 states and 2517 transitions. [2020-07-21 13:55:21,510 INFO L78 Accepts]: Start accepts. Automaton has 2050 states and 2517 transitions. Word has length 235 [2020-07-21 13:55:21,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:55:21,511 INFO L479 AbstractCegarLoop]: Abstraction has 2050 states and 2517 transitions. [2020-07-21 13:55:21,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:55:21,511 INFO L276 IsEmpty]: Start isEmpty. Operand 2050 states and 2517 transitions. [2020-07-21 13:55:21,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-07-21 13:55:21,517 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:55:21,517 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:55:21,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:55:21,733 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:55:21,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:55:21,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1035067172, now seen corresponding path program 1 times [2020-07-21 13:55:21,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:55:21,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392493323] [2020-07-21 13:55:21,734 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:55:21,849 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:55:21,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:55:21,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 13:55:21,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:55:21,940 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-07-21 13:55:21,940 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:55:21,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392493323] [2020-07-21 13:55:21,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:55:21,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:55:21,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156261994] [2020-07-21 13:55:21,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:55:21,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:55:21,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:55:21,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:55:21,943 INFO L87 Difference]: Start difference. First operand 2050 states and 2517 transitions. Second operand 3 states. [2020-07-21 13:55:22,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:55:22,543 INFO L93 Difference]: Finished difference Result 3206 states and 3989 transitions. [2020-07-21 13:55:22,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:55:22,544 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 251 [2020-07-21 13:55:22,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:55:22,560 INFO L225 Difference]: With dead ends: 3206 [2020-07-21 13:55:22,560 INFO L226 Difference]: Without dead ends: 3204 [2020-07-21 13:55:22,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:55:22,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3204 states. [2020-07-21 13:55:22,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3204 to 2775. [2020-07-21 13:55:22,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2775 states. [2020-07-21 13:55:22,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2775 states to 2775 states and 3490 transitions. [2020-07-21 13:55:22,640 INFO L78 Accepts]: Start accepts. Automaton has 2775 states and 3490 transitions. Word has length 251 [2020-07-21 13:55:22,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:55:22,641 INFO L479 AbstractCegarLoop]: Abstraction has 2775 states and 3490 transitions. [2020-07-21 13:55:22,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:55:22,641 INFO L276 IsEmpty]: Start isEmpty. Operand 2775 states and 3490 transitions. [2020-07-21 13:55:22,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-07-21 13:55:22,649 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:55:22,649 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:55:22,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:55:22,863 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:55:22,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:55:22,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1149072459, now seen corresponding path program 1 times [2020-07-21 13:55:22,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:55:22,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983341947] [2020-07-21 13:55:22,864 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:55:23,009 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:55:23,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:55:23,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 13:55:23,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:55:23,112 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-07-21 13:55:23,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:55:23,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983341947] [2020-07-21 13:55:23,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:55:23,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:55:23,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652141127] [2020-07-21 13:55:23,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:55:23,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:55:23,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:55:23,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:55:23,114 INFO L87 Difference]: Start difference. First operand 2775 states and 3490 transitions. Second operand 3 states. [2020-07-21 13:55:23,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:55:23,755 INFO L93 Difference]: Finished difference Result 5828 states and 7294 transitions. [2020-07-21 13:55:23,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:55:23,756 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 264 [2020-07-21 13:55:23,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:55:23,757 INFO L225 Difference]: With dead ends: 5828 [2020-07-21 13:55:23,757 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 13:55:23,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:55:23,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 13:55:23,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 13:55:23,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 13:55:23,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 13:55:23,776 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 264 [2020-07-21 13:55:23,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:55:23,777 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 13:55:23,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:55:23,777 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 13:55:23,777 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 13:55:23,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:55:23,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 13:55:24,713 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 45 [2020-07-21 13:55:24,842 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 13:55:24,843 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)|)) [2020-07-21 13:55:24,843 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 13:55:24,843 INFO L268 CegarLoopResult]: For program point L465(lines 465 572) no Hoare annotation was computed. [2020-07-21 13:55:24,843 INFO L268 CegarLoopResult]: For program point L201-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,843 INFO L268 CegarLoopResult]: For program point L168-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,843 INFO L268 CegarLoopResult]: For program point L135-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,844 INFO L268 CegarLoopResult]: For program point L102-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,844 INFO L268 CegarLoopResult]: For program point L69-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,844 INFO L268 CegarLoopResult]: For program point L36-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,844 INFO L268 CegarLoopResult]: For program point L499(lines 499 572) no Hoare annotation was computed. [2020-07-21 13:55:24,844 INFO L268 CegarLoopResult]: For program point L301(lines 301 572) no Hoare annotation was computed. [2020-07-21 13:55:24,844 INFO L268 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2020-07-21 13:55:24,844 INFO L268 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2020-07-21 13:55:24,844 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-07-21 13:55:24,845 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-07-21 13:55:24,845 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-07-21 13:55:24,845 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-07-21 13:55:24,845 INFO L268 CegarLoopResult]: For program point L335(lines 335 572) no Hoare annotation was computed. [2020-07-21 13:55:24,845 INFO L268 CegarLoopResult]: For program point L236(lines 236 572) no Hoare annotation was computed. [2020-07-21 13:55:24,845 INFO L268 CegarLoopResult]: For program point L534(lines 534 572) no Hoare annotation was computed. [2020-07-21 13:55:24,845 INFO L268 CegarLoopResult]: For program point L171-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,846 INFO L268 CegarLoopResult]: For program point L138-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,846 INFO L268 CegarLoopResult]: For program point L105-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,846 INFO L268 CegarLoopResult]: For program point L72-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,846 INFO L268 CegarLoopResult]: For program point L39-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,846 INFO L268 CegarLoopResult]: For program point L436(lines 436 572) no Hoare annotation was computed. [2020-07-21 13:55:24,846 INFO L268 CegarLoopResult]: For program point L403(lines 403 572) no Hoare annotation was computed. [2020-07-21 13:55:24,847 INFO L268 CegarLoopResult]: For program point L370(lines 370 572) no Hoare annotation was computed. [2020-07-21 13:55:24,847 INFO L268 CegarLoopResult]: For program point L271(lines 271 572) no Hoare annotation was computed. [2020-07-21 13:55:24,847 INFO L268 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2020-07-21 13:55:24,847 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-07-21 13:55:24,847 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-07-21 13:55:24,847 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-07-21 13:55:24,847 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-07-21 13:55:24,847 INFO L268 CegarLoopResult]: For program point L569(lines 569 572) no Hoare annotation was computed. [2020-07-21 13:55:24,848 INFO L268 CegarLoopResult]: For program point L239(lines 239 572) no Hoare annotation was computed. [2020-07-21 13:55:24,848 INFO L268 CegarLoopResult]: For program point L504(lines 504 572) no Hoare annotation was computed. [2020-07-21 13:55:24,848 INFO L268 CegarLoopResult]: For program point L471(lines 471 572) no Hoare annotation was computed. [2020-07-21 13:55:24,848 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 190) no Hoare annotation was computed. [2020-07-21 13:55:24,848 INFO L268 CegarLoopResult]: For program point L306(lines 306 572) no Hoare annotation was computed. [2020-07-21 13:55:24,848 INFO L268 CegarLoopResult]: For program point L174-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,848 INFO L268 CegarLoopResult]: For program point L141-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,848 INFO L268 CegarLoopResult]: For program point L108-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,849 INFO L268 CegarLoopResult]: For program point L75-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,849 INFO L268 CegarLoopResult]: For program point L42-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,849 INFO L268 CegarLoopResult]: For program point L340(lines 340 572) no Hoare annotation was computed. [2020-07-21 13:55:24,849 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-21 13:55:24,849 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-07-21 13:55:24,849 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-07-21 13:55:24,849 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-07-21 13:55:24,849 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-07-21 13:55:24,849 INFO L268 CegarLoopResult]: For program point L540(lines 540 572) no Hoare annotation was computed. [2020-07-21 13:55:24,850 INFO L268 CegarLoopResult]: For program point L408(lines 408 572) no Hoare annotation was computed. [2020-07-21 13:55:24,850 INFO L268 CegarLoopResult]: For program point L375(lines 375 572) no Hoare annotation was computed. [2020-07-21 13:55:24,850 INFO L268 CegarLoopResult]: For program point L210(lines 210 572) no Hoare annotation was computed. [2020-07-21 13:55:24,850 INFO L268 CegarLoopResult]: For program point L177-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,850 INFO L268 CegarLoopResult]: For program point L144-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,850 INFO L268 CegarLoopResult]: For program point L111-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,850 INFO L268 CegarLoopResult]: For program point L78-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,850 INFO L268 CegarLoopResult]: For program point L45-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,851 INFO L268 CegarLoopResult]: For program point L442(lines 442 572) no Hoare annotation was computed. [2020-07-21 13:55:24,851 INFO L268 CegarLoopResult]: For program point L277(lines 277 572) no Hoare annotation was computed. [2020-07-21 13:55:24,851 INFO L268 CegarLoopResult]: For program point L244(lines 244 572) no Hoare annotation was computed. [2020-07-21 13:55:24,851 INFO L268 CegarLoopResult]: For program point L178(line 178) no Hoare annotation was computed. [2020-07-21 13:55:24,851 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-07-21 13:55:24,851 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-07-21 13:55:24,851 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-07-21 13:55:24,852 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-21 13:55:24,852 INFO L268 CegarLoopResult]: For program point L509(lines 509 572) no Hoare annotation was computed. [2020-07-21 13:55:24,852 INFO L268 CegarLoopResult]: For program point L476(lines 476 572) no Hoare annotation was computed. [2020-07-21 13:55:24,852 INFO L268 CegarLoopResult]: For program point L378(lines 378 572) no Hoare annotation was computed. [2020-07-21 13:55:24,852 INFO L268 CegarLoopResult]: For program point L345(lines 345 572) no Hoare annotation was computed. [2020-07-21 13:55:24,852 INFO L268 CegarLoopResult]: For program point L312(lines 312 572) no Hoare annotation was computed. [2020-07-21 13:55:24,852 INFO L268 CegarLoopResult]: For program point L180-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,853 INFO L268 CegarLoopResult]: For program point L147-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,853 INFO L268 CegarLoopResult]: For program point L114-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,853 INFO L268 CegarLoopResult]: For program point L81-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,853 INFO L268 CegarLoopResult]: For program point L48-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,853 INFO L268 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2020-07-21 13:55:24,853 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-07-21 13:55:24,853 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-21 13:55:24,853 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-07-21 13:55:24,853 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-07-21 13:55:24,854 INFO L268 CegarLoopResult]: For program point L545(lines 545 572) no Hoare annotation was computed. [2020-07-21 13:55:24,854 INFO L268 CegarLoopResult]: For program point L215(lines 215 572) no Hoare annotation was computed. [2020-07-21 13:55:24,854 INFO L268 CegarLoopResult]: For program point L414(lines 414 572) no Hoare annotation was computed. [2020-07-21 13:55:24,854 INFO L268 CegarLoopResult]: For program point L249(lines 249 572) no Hoare annotation was computed. [2020-07-21 13:55:24,854 INFO L268 CegarLoopResult]: For program point L183-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,854 INFO L268 CegarLoopResult]: For program point L150-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,854 INFO L268 CegarLoopResult]: For program point L117-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,854 INFO L268 CegarLoopResult]: For program point L84-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,854 INFO L268 CegarLoopResult]: For program point L51-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,855 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,855 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,855 INFO L268 CegarLoopResult]: For program point L514(lines 514 572) no Hoare annotation was computed. [2020-07-21 13:55:24,855 INFO L268 CegarLoopResult]: For program point L481(lines 481 572) no Hoare annotation was computed. [2020-07-21 13:55:24,855 INFO L268 CegarLoopResult]: For program point L448(lines 448 572) no Hoare annotation was computed. [2020-07-21 13:55:24,855 INFO L268 CegarLoopResult]: For program point L283(lines 283 572) no Hoare annotation was computed. [2020-07-21 13:55:24,855 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-07-21 13:55:24,856 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-07-21 13:55:24,856 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-07-21 13:55:24,856 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-07-21 13:55:24,856 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-07-21 13:55:24,856 INFO L268 CegarLoopResult]: For program point L548(lines 548 572) no Hoare annotation was computed. [2020-07-21 13:55:24,856 INFO L268 CegarLoopResult]: For program point L383(lines 383 572) no Hoare annotation was computed. [2020-07-21 13:55:24,856 INFO L268 CegarLoopResult]: For program point L317(lines 317 572) no Hoare annotation was computed. [2020-07-21 13:55:24,857 INFO L268 CegarLoopResult]: For program point L351(lines 351 572) no Hoare annotation was computed. [2020-07-21 13:55:24,857 INFO L268 CegarLoopResult]: For program point L186-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,857 INFO L268 CegarLoopResult]: For program point L153-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,857 INFO L268 CegarLoopResult]: For program point L120-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,857 INFO L268 CegarLoopResult]: For program point L87-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,857 INFO L268 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-07-21 13:55:24,857 INFO L268 CegarLoopResult]: For program point L54-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,857 INFO L268 CegarLoopResult]: For program point L21-2(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,858 INFO L268 CegarLoopResult]: For program point L517(lines 517 572) no Hoare annotation was computed. [2020-07-21 13:55:24,858 INFO L268 CegarLoopResult]: For program point L286(lines 286 572) no Hoare annotation was computed. [2020-07-21 13:55:24,858 INFO L268 CegarLoopResult]: For program point L220(lines 220 572) no Hoare annotation was computed. [2020-07-21 13:55:24,858 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-21 13:55:24,858 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-07-21 13:55:24,858 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-07-21 13:55:24,859 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-07-21 13:55:24,859 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-07-21 13:55:24,859 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-21 13:55:24,859 INFO L268 CegarLoopResult]: For program point L419(lines 419 572) no Hoare annotation was computed. [2020-07-21 13:55:24,859 INFO L268 CegarLoopResult]: For program point L320(lines 320 572) no Hoare annotation was computed. [2020-07-21 13:55:24,859 INFO L268 CegarLoopResult]: For program point L254(lines 254 572) no Hoare annotation was computed. [2020-07-21 13:55:24,859 INFO L268 CegarLoopResult]: For program point L354(lines 354 572) no Hoare annotation was computed. [2020-07-21 13:55:24,859 INFO L268 CegarLoopResult]: For program point L189-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,860 INFO L268 CegarLoopResult]: For program point L156-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,860 INFO L268 CegarLoopResult]: For program point L123-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,860 INFO L268 CegarLoopResult]: For program point L90-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,860 INFO L268 CegarLoopResult]: For program point L57-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,860 INFO L268 CegarLoopResult]: For program point L24-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,860 INFO L268 CegarLoopResult]: For program point L487(lines 487 572) no Hoare annotation was computed. [2020-07-21 13:55:24,860 INFO L268 CegarLoopResult]: For program point L454(lines 454 572) no Hoare annotation was computed. [2020-07-21 13:55:24,860 INFO L268 CegarLoopResult]: For program point L388(lines 388 572) no Hoare annotation was computed. [2020-07-21 13:55:24,860 INFO L268 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2020-07-21 13:55:24,860 INFO L268 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2020-07-21 13:55:24,860 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-07-21 13:55:24,861 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-07-21 13:55:24,861 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-07-21 13:55:24,861 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-21 13:55:24,861 INFO L268 CegarLoopResult]: For program point L554(lines 554 572) no Hoare annotation was computed. [2020-07-21 13:55:24,861 INFO L268 CegarLoopResult]: For program point L323(lines 323 572) no Hoare annotation was computed. [2020-07-21 13:55:24,861 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)))) [2020-07-21 13:55:24,861 INFO L268 CegarLoopResult]: For program point L357(lines 357 572) no Hoare annotation was computed. [2020-07-21 13:55:24,861 INFO L268 CegarLoopResult]: For program point L291(lines 291 572) no Hoare annotation was computed. [2020-07-21 13:55:24,862 INFO L268 CegarLoopResult]: For program point L225(lines 225 572) no Hoare annotation was computed. [2020-07-21 13:55:24,862 INFO L268 CegarLoopResult]: For program point L192-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,862 INFO L268 CegarLoopResult]: For program point L159-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,862 INFO L268 CegarLoopResult]: For program point L126-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,862 INFO L268 CegarLoopResult]: For program point L93-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,862 INFO L268 CegarLoopResult]: For program point L60-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,862 INFO L268 CegarLoopResult]: For program point L27-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,862 INFO L268 CegarLoopResult]: For program point L523(lines 523 572) no Hoare annotation was computed. [2020-07-21 13:55:24,862 INFO L268 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2020-07-21 13:55:24,862 INFO L268 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-07-21 13:55:24,862 INFO L268 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-07-21 13:55:24,862 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-07-21 13:55:24,863 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-07-21 13:55:24,863 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-07-21 13:55:24,863 INFO L268 CegarLoopResult]: For program point L557(lines 557 572) no Hoare annotation was computed. [2020-07-21 13:55:24,863 INFO L268 CegarLoopResult]: For program point L425(lines 425 572) no Hoare annotation was computed. [2020-07-21 13:55:24,863 INFO L268 CegarLoopResult]: For program point L326(lines 326 572) no Hoare annotation was computed. [2020-07-21 13:55:24,863 INFO L268 CegarLoopResult]: For program point L260(lines 260 572) no Hoare annotation was computed. [2020-07-21 13:55:24,863 INFO L268 CegarLoopResult]: For program point L393(lines 393 572) no Hoare annotation was computed. [2020-07-21 13:55:24,863 INFO L268 CegarLoopResult]: For program point L360(lines 360 572) no Hoare annotation was computed. [2020-07-21 13:55:24,863 INFO L268 CegarLoopResult]: For program point L195-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,863 INFO L268 CegarLoopResult]: For program point L162-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,863 INFO L268 CegarLoopResult]: For program point L129-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,864 INFO L268 CegarLoopResult]: For program point L96-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,864 INFO L268 CegarLoopResult]: For program point L63-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,864 INFO L268 CegarLoopResult]: For program point L30-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,864 INFO L268 CegarLoopResult]: For program point L526(lines 526 572) no Hoare annotation was computed. [2020-07-21 13:55:24,864 INFO L268 CegarLoopResult]: For program point L493(lines 493 572) no Hoare annotation was computed. [2020-07-21 13:55:24,864 INFO L268 CegarLoopResult]: For program point L460(lines 460 572) no Hoare annotation was computed. [2020-07-21 13:55:24,864 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-07-21 13:55:24,864 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-07-21 13:55:24,864 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-07-21 13:55:24,864 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-07-21 13:55:24,864 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-07-21 13:55:24,865 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-21 13:55:24,865 INFO L268 CegarLoopResult]: For program point L329(lines 329 572) no Hoare annotation was computed. [2020-07-21 13:55:24,865 INFO L268 CegarLoopResult]: For program point L296(lines 296 572) no Hoare annotation was computed. [2020-07-21 13:55:24,865 INFO L268 CegarLoopResult]: For program point L231(lines 231 572) no Hoare annotation was computed. [2020-07-21 13:55:24,865 INFO L268 CegarLoopResult]: For program point L198-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,865 INFO L268 CegarLoopResult]: For program point L165-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,865 INFO L268 CegarLoopResult]: For program point L132-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,865 INFO L268 CegarLoopResult]: For program point L99-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,865 INFO L268 CegarLoopResult]: For program point L66-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,865 INFO L268 CegarLoopResult]: For program point L33-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:24,865 INFO L268 CegarLoopResult]: For program point L529(lines 529 572) no Hoare annotation was computed. [2020-07-21 13:55:24,866 INFO L268 CegarLoopResult]: For program point L430(lines 430 572) no Hoare annotation was computed. [2020-07-21 13:55:24,866 INFO L268 CegarLoopResult]: For program point L265(lines 265 572) no Hoare annotation was computed. [2020-07-21 13:55:24,866 INFO L268 CegarLoopResult]: For program point L199(line 199) no Hoare annotation was computed. [2020-07-21 13:55:24,866 INFO L268 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2020-07-21 13:55:24,866 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-07-21 13:55:24,866 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-07-21 13:55:24,866 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-07-21 13:55:24,866 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-21 13:55:24,866 INFO L268 CegarLoopResult]: For program point L563(lines 563 572) no Hoare annotation was computed. [2020-07-21 13:55:24,866 INFO L268 CegarLoopResult]: For program point L398(lines 398 572) no Hoare annotation was computed. [2020-07-21 13:55:24,866 INFO L268 CegarLoopResult]: For program point L365(lines 365 572) no Hoare annotation was computed. [2020-07-21 13:55:24,866 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 13:55:24,867 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)) [2020-07-21 13:55:24,867 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 13:55:24,867 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 13:55:24,867 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))) [2020-07-21 13:55:24,867 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 576 592) no Hoare annotation was computed. [2020-07-21 13:55:24,867 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))) [2020-07-21 13:55:24,867 INFO L268 CegarLoopResult]: For program point L590-1(line 590) no Hoare annotation was computed. [2020-07-21 13:55:24,867 INFO L268 CegarLoopResult]: For program point L587(line 587) no Hoare annotation was computed. [2020-07-21 13:55:24,868 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))) [2020-07-21 13:55:24,868 INFO L268 CegarLoopResult]: For program point L582-3(lines 576 592) no Hoare annotation was computed. [2020-07-21 13:55:24,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:55:24 BoogieIcfgContainer [2020-07-21 13:55:24,888 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 13:55:24,890 INFO L168 Benchmark]: Toolchain (without parser) took 13639.17 ms. Allocated memory was 146.8 MB in the beginning and 393.2 MB in the end (delta: 246.4 MB). Free memory was 102.7 MB in the beginning and 91.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 257.1 MB. Max. memory is 7.1 GB. [2020-07-21 13:55:24,892 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 146.8 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-21 13:55:24,893 INFO L168 Benchmark]: CACSL2BoogieTranslator took 692.01 ms. Allocated memory was 146.8 MB in the beginning and 207.6 MB in the end (delta: 60.8 MB). Free memory was 102.2 MB in the beginning and 173.3 MB in the end (delta: -71.1 MB). Peak memory consumption was 30.4 MB. Max. memory is 7.1 GB. [2020-07-21 13:55:24,893 INFO L168 Benchmark]: Boogie Preprocessor took 101.38 ms. Allocated memory is still 207.6 MB. Free memory was 173.3 MB in the beginning and 169.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-07-21 13:55:24,894 INFO L168 Benchmark]: RCFGBuilder took 1319.28 ms. Allocated memory was 207.6 MB in the beginning and 237.5 MB in the end (delta: 29.9 MB). Free memory was 169.1 MB in the beginning and 179.7 MB in the end (delta: -10.6 MB). Peak memory consumption was 80.9 MB. Max. memory is 7.1 GB. [2020-07-21 13:55:24,895 INFO L168 Benchmark]: TraceAbstraction took 11520.72 ms. Allocated memory was 237.5 MB in the beginning and 393.2 MB in the end (delta: 155.7 MB). Free memory was 178.3 MB in the beginning and 91.9 MB in the end (delta: 86.4 MB). Peak memory consumption was 242.1 MB. Max. memory is 7.1 GB. [2020-07-21 13:55:24,900 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 146.8 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 692.01 ms. Allocated memory was 146.8 MB in the beginning and 207.6 MB in the end (delta: 60.8 MB). Free memory was 102.2 MB in the beginning and 173.3 MB in the end (delta: -71.1 MB). Peak memory consumption was 30.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 101.38 ms. Allocated memory is still 207.6 MB. Free memory was 173.3 MB in the beginning and 169.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1319.28 ms. Allocated memory was 207.6 MB in the beginning and 237.5 MB in the end (delta: 29.9 MB). Free memory was 169.1 MB in the beginning and 179.7 MB in the end (delta: -10.6 MB). Peak memory consumption was 80.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11520.72 ms. Allocated memory was 237.5 MB in the beginning and 393.2 MB in the end (delta: 155.7 MB). Free memory was 178.3 MB in the beginning and 91.9 MB in the end (delta: 86.4 MB). Peak memory consumption was 242.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 190]: 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: 10.5s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 6.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 681 SDtfs, 1266 SDslu, 134 SDs, 0 SdLazy, 3432 SolverSat, 681 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1432 GetRequests, 1414 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, 0.3s HoareSimplificationTime, 7 FomulaSimplificationsInter, 720 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 1434 NumberOfCodeBlocks, 1434 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1426 ConstructedInterpolants, 0 QuantifiedInterpolants, 482268 SizeOfPredicates, 15 NumberOfNonLiveVariables, 2590 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 834/834 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...