/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 21:58:13,418 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-20 21:58:13,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 21:58:13,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 21:58:13,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 21:58:13,465 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 21:58:13,469 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 21:58:13,473 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 21:58:13,474 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 21:58:13,477 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 21:58:13,477 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 21:58:13,479 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 21:58:13,482 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 21:58:13,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 21:58:13,486 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 21:58:13,487 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 21:58:13,489 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 21:58:13,495 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 21:58:13,501 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 21:58:13,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 21:58:13,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 21:58:13,507 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 21:58:13,510 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 21:58:13,521 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 21:58:13,522 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 21:58:13,524 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 21:58:13,525 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 21:58:13,565 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 21:58:13,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 21:58:13,567 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 21:58:13,567 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 21:58:13,568 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 21:58:13,568 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 21:58:13,568 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 21:58:13,572 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 21:58:13,572 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 21:58:13,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 21:58:13,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 21:58:13,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 21:58:13,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 21:58:13,573 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 21:58:13,573 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 21:58:13,574 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 21:58:13,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 21:58:13,574 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 21:58:13,574 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 21:58:13,574 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 21:58:13,575 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 21:58:13,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 21:58:13,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 21:58:13,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 21:58:13,575 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 21:58:13,576 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 21:58:13,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:58:13,576 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 21:58:13,576 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 21:58:13,576 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 21:58:13,955 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 21:58:13,973 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 21:58:13,977 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 21:58:13,979 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 21:58:13,979 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 21:58:13,980 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label00.c [2020-07-20 21:58:14,048 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae5c88030/f23e5ac279da4422b1fe3c7cec49d987/FLAG8c2428b82 [2020-07-20 21:58:14,612 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 21:58:14,618 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label00.c [2020-07-20 21:58:14,638 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae5c88030/f23e5ac279da4422b1fe3c7cec49d987/FLAG8c2428b82 [2020-07-20 21:58:14,909 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae5c88030/f23e5ac279da4422b1fe3c7cec49d987 [2020-07-20 21:58:14,922 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 21:58:14,926 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 21:58:14,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 21:58:14,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 21:58:14,934 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 21:58:14,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:58:14" (1/1) ... [2020-07-20 21:58:14,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e20bf57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:58:14, skipping insertion in model container [2020-07-20 21:58:14,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:58:14" (1/1) ... [2020-07-20 21:58:14,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 21:58:14,998 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 21:58:15,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 21:58:15,689 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 21:58:15,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 21:58:15,847 INFO L208 MainTranslator]: Completed translation [2020-07-20 21:58:15,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:58:15 WrapperNode [2020-07-20 21:58:15,848 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 21:58:15,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 21:58:15,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 21:58:15,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 21:58:15,876 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:58:15" (1/1) ... [2020-07-20 21:58:15,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:58:15" (1/1) ... [2020-07-20 21:58:15,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:58:15" (1/1) ... [2020-07-20 21:58:15,900 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:58:15" (1/1) ... [2020-07-20 21:58:15,943 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:58:15" (1/1) ... [2020-07-20 21:58:15,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:58:15" (1/1) ... [2020-07-20 21:58:15,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:58:15" (1/1) ... [2020-07-20 21:58:15,981 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 21:58:15,982 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 21:58:15,982 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 21:58:15,982 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 21:58:15,984 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:58:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 21:58:16,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 21:58:16,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 21:58:16,054 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-20 21:58:16,054 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 21:58:16,054 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-20 21:58:16,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 21:58:16,055 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 21:58:16,055 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 21:58:16,055 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 21:58:16,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 21:58:16,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 21:58:17,317 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 21:58:17,317 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 21:58:17,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:58:17 BoogieIcfgContainer [2020-07-20 21:58:17,330 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 21:58:17,334 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 21:58:17,334 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 21:58:17,338 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 21:58:17,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 09:58:14" (1/3) ... [2020-07-20 21:58:17,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e32ff52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:58:17, skipping insertion in model container [2020-07-20 21:58:17,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:58:15" (2/3) ... [2020-07-20 21:58:17,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e32ff52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:58:17, skipping insertion in model container [2020-07-20 21:58:17,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:58:17" (3/3) ... [2020-07-20 21:58:17,344 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label00.c [2020-07-20 21:58:17,358 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 21:58:17,372 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 21:58:17,393 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 21:58:17,433 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 21:58:17,433 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 21:58:17,433 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 21:58:17,433 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 21:58:17,433 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 21:58:17,434 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 21:58:17,434 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 21:58:17,434 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 21:58:17,465 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-07-20 21:58:17,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-07-20 21:58:17,488 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:58:17,489 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:58:17,490 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:58:17,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:58:17,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1845535338, now seen corresponding path program 1 times [2020-07-20 21:58:17,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:58:17,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462961089] [2020-07-20 21:58:17,509 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:58:17,719 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:58:17,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:58:17,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 21:58:17,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:58:17,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:58:17,841 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:58:17,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462961089] [2020-07-20 21:58:17,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:58:17,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 21:58:17,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62347645] [2020-07-20 21:58:17,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 21:58:17,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:58:17,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 21:58:17,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:58:17,869 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 3 states. [2020-07-20 21:58:18,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:58:18,919 INFO L93 Difference]: Finished difference Result 572 states and 963 transitions. [2020-07-20 21:58:18,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 21:58:18,921 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 114 [2020-07-20 21:58:18,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:58:18,942 INFO L225 Difference]: With dead ends: 572 [2020-07-20 21:58:18,942 INFO L226 Difference]: Without dead ends: 278 [2020-07-20 21:58:18,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:58:18,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-07-20 21:58:19,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2020-07-20 21:58:19,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-07-20 21:58:19,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 394 transitions. [2020-07-20 21:58:19,026 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 394 transitions. Word has length 114 [2020-07-20 21:58:19,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:58:19,028 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 394 transitions. [2020-07-20 21:58:19,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 21:58:19,028 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 394 transitions. [2020-07-20 21:58:19,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-07-20 21:58:19,034 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:58:19,034 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:58:19,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:58:19,249 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:58:19,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:58:19,250 INFO L82 PathProgramCache]: Analyzing trace with hash -457589907, now seen corresponding path program 1 times [2020-07-20 21:58:19,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:58:19,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016265962] [2020-07-20 21:58:19,250 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:58:19,388 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:58:19,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:58:19,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 21:58:19,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:58:19,475 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:58:19,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:58:19,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016265962] [2020-07-20 21:58:19,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:58:19,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 21:58:19,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844251964] [2020-07-20 21:58:19,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 21:58:19,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:58:19,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 21:58:19,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:58:19,482 INFO L87 Difference]: Start difference. First operand 278 states and 394 transitions. Second operand 3 states. [2020-07-20 21:58:20,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:58:20,109 INFO L93 Difference]: Finished difference Result 820 states and 1181 transitions. [2020-07-20 21:58:20,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 21:58:20,110 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 124 [2020-07-20 21:58:20,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:58:20,117 INFO L225 Difference]: With dead ends: 820 [2020-07-20 21:58:20,118 INFO L226 Difference]: Without dead ends: 548 [2020-07-20 21:58:20,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:58:20,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2020-07-20 21:58:20,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 548. [2020-07-20 21:58:20,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 548 states. [2020-07-20 21:58:20,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 734 transitions. [2020-07-20 21:58:20,178 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 734 transitions. Word has length 124 [2020-07-20 21:58:20,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:58:20,180 INFO L479 AbstractCegarLoop]: Abstraction has 548 states and 734 transitions. [2020-07-20 21:58:20,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 21:58:20,180 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 734 transitions. [2020-07-20 21:58:20,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-07-20 21:58:20,184 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:58:20,185 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:58:20,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:58:20,401 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:58:20,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:58:20,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1583976871, now seen corresponding path program 1 times [2020-07-20 21:58:20,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:58:20,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507046829] [2020-07-20 21:58:20,404 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:58:20,580 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:58:20,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:58:20,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 21:58:20,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:58:20,655 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:58:20,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:58:20,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507046829] [2020-07-20 21:58:20,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:58:20,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 21:58:20,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548130185] [2020-07-20 21:58:20,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 21:58:20,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:58:20,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 21:58:20,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:58:20,659 INFO L87 Difference]: Start difference. First operand 548 states and 734 transitions. Second operand 3 states. [2020-07-20 21:58:21,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:58:21,320 INFO L93 Difference]: Finished difference Result 1360 states and 1853 transitions. [2020-07-20 21:58:21,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 21:58:21,328 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 129 [2020-07-20 21:58:21,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:58:21,339 INFO L225 Difference]: With dead ends: 1360 [2020-07-20 21:58:21,339 INFO L226 Difference]: Without dead ends: 818 [2020-07-20 21:58:21,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:58:21,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2020-07-20 21:58:21,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 818. [2020-07-20 21:58:21,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 818 states. [2020-07-20 21:58:21,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1060 transitions. [2020-07-20 21:58:21,394 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1060 transitions. Word has length 129 [2020-07-20 21:58:21,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:58:21,395 INFO L479 AbstractCegarLoop]: Abstraction has 818 states and 1060 transitions. [2020-07-20 21:58:21,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 21:58:21,395 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1060 transitions. [2020-07-20 21:58:21,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-07-20 21:58:21,399 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:58:21,399 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:58:21,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:58:21,608 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:58:21,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:58:21,609 INFO L82 PathProgramCache]: Analyzing trace with hash -924358024, now seen corresponding path program 1 times [2020-07-20 21:58:21,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:58:21,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050608185] [2020-07-20 21:58:21,610 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:58:21,736 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:58:21,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:58:21,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 21:58:21,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:58:21,822 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:58:21,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:58:21,925 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:58:21,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050608185] [2020-07-20 21:58:21,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:58:21,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-07-20 21:58:21,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934538696] [2020-07-20 21:58:21,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 21:58:21,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:58:21,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 21:58:21,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-07-20 21:58:21,929 INFO L87 Difference]: Start difference. First operand 818 states and 1060 transitions. Second operand 8 states. [2020-07-20 21:58:23,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:58:23,930 INFO L93 Difference]: Finished difference Result 3084 states and 4287 transitions. [2020-07-20 21:58:23,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 21:58:23,931 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 140 [2020-07-20 21:58:23,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:58:23,950 INFO L225 Difference]: With dead ends: 3084 [2020-07-20 21:58:23,951 INFO L226 Difference]: Without dead ends: 2272 [2020-07-20 21:58:23,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-07-20 21:58:23,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2272 states. [2020-07-20 21:58:24,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2272 to 2065. [2020-07-20 21:58:24,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2065 states. [2020-07-20 21:58:24,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2065 states to 2065 states and 2574 transitions. [2020-07-20 21:58:24,083 INFO L78 Accepts]: Start accepts. Automaton has 2065 states and 2574 transitions. Word has length 140 [2020-07-20 21:58:24,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:58:24,084 INFO L479 AbstractCegarLoop]: Abstraction has 2065 states and 2574 transitions. [2020-07-20 21:58:24,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 21:58:24,084 INFO L276 IsEmpty]: Start isEmpty. Operand 2065 states and 2574 transitions. [2020-07-20 21:58:24,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-07-20 21:58:24,095 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:58:24,095 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:58:24,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:58:24,309 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:58:24,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:58:24,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1522570016, now seen corresponding path program 1 times [2020-07-20 21:58:24,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:58:24,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123064812] [2020-07-20 21:58:24,311 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:58:24,431 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:58:24,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:58:24,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 21:58:24,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:58:24,523 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-07-20 21:58:24,524 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:58:24,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123064812] [2020-07-20 21:58:24,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:58:24,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 21:58:24,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440703123] [2020-07-20 21:58:24,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 21:58:24,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:58:24,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 21:58:24,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:58:24,529 INFO L87 Difference]: Start difference. First operand 2065 states and 2574 transitions. Second operand 3 states. [2020-07-20 21:58:25,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:58:25,248 INFO L93 Difference]: Finished difference Result 5617 states and 7130 transitions. [2020-07-20 21:58:25,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 21:58:25,249 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2020-07-20 21:58:25,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:58:25,273 INFO L225 Difference]: With dead ends: 5617 [2020-07-20 21:58:25,274 INFO L226 Difference]: Without dead ends: 3562 [2020-07-20 21:58:25,281 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 [2020-07-20 21:58:25,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3562 states. [2020-07-20 21:58:25,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3562 to 2752. [2020-07-20 21:58:25,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2752 states. [2020-07-20 21:58:25,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2752 states to 2752 states and 3489 transitions. [2020-07-20 21:58:25,398 INFO L78 Accepts]: Start accepts. Automaton has 2752 states and 3489 transitions. Word has length 147 [2020-07-20 21:58:25,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:58:25,399 INFO L479 AbstractCegarLoop]: Abstraction has 2752 states and 3489 transitions. [2020-07-20 21:58:25,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 21:58:25,400 INFO L276 IsEmpty]: Start isEmpty. Operand 2752 states and 3489 transitions. [2020-07-20 21:58:25,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-07-20 21:58:25,413 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:58:25,414 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:58:25,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:58:25,629 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:58:25,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:58:25,630 INFO L82 PathProgramCache]: Analyzing trace with hash -2145339801, now seen corresponding path program 1 times [2020-07-20 21:58:25,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:58:25,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378776839] [2020-07-20 21:58:25,631 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:58:25,795 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:58:25,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:58:25,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 21:58:25,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:58:25,882 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 55 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-07-20 21:58:25,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:58:25,973 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-07-20 21:58:25,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378776839] [2020-07-20 21:58:25,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:58:25,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-07-20 21:58:25,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290443603] [2020-07-20 21:58:25,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 21:58:25,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:58:25,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 21:58:25,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 21:58:25,986 INFO L87 Difference]: Start difference. First operand 2752 states and 3489 transitions. Second operand 5 states. [2020-07-20 21:58:26,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:58:26,988 INFO L93 Difference]: Finished difference Result 8060 states and 10713 transitions. [2020-07-20 21:58:26,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 21:58:26,989 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-07-20 21:58:26,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:58:27,033 INFO L225 Difference]: With dead ends: 8060 [2020-07-20 21:58:27,033 INFO L226 Difference]: Without dead ends: 5318 [2020-07-20 21:58:27,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 324 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-07-20 21:58:27,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5318 states. [2020-07-20 21:58:27,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5318 to 4555. [2020-07-20 21:58:27,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4555 states. [2020-07-20 21:58:27,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4555 states to 4555 states and 5822 transitions. [2020-07-20 21:58:27,244 INFO L78 Accepts]: Start accepts. Automaton has 4555 states and 5822 transitions. Word has length 165 [2020-07-20 21:58:27,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:58:27,245 INFO L479 AbstractCegarLoop]: Abstraction has 4555 states and 5822 transitions. [2020-07-20 21:58:27,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 21:58:27,245 INFO L276 IsEmpty]: Start isEmpty. Operand 4555 states and 5822 transitions. [2020-07-20 21:58:27,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-07-20 21:58:27,261 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:58:27,261 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:58:27,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:58:27,476 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:58:27,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:58:27,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1999183012, now seen corresponding path program 1 times [2020-07-20 21:58:27,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:58:27,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483109794] [2020-07-20 21:58:27,478 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:58:27,679 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:58:27,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:58:27,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 21:58:27,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:58:27,734 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 104 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-07-20 21:58:27,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:58:27,825 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 104 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-07-20 21:58:27,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483109794] [2020-07-20 21:58:27,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:58:27,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-20 21:58:27,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620239775] [2020-07-20 21:58:27,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 21:58:27,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:58:27,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 21:58:27,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-20 21:58:27,827 INFO L87 Difference]: Start difference. First operand 4555 states and 5822 transitions. Second operand 7 states. [2020-07-20 21:58:29,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:58:29,387 INFO L93 Difference]: Finished difference Result 11459 states and 14935 transitions. [2020-07-20 21:58:29,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 21:58:29,388 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 184 [2020-07-20 21:58:29,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:58:29,430 INFO L225 Difference]: With dead ends: 11459 [2020-07-20 21:58:29,431 INFO L226 Difference]: Without dead ends: 6914 [2020-07-20 21:58:29,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 366 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-07-20 21:58:29,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6914 states. [2020-07-20 21:58:29,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6914 to 5816. [2020-07-20 21:58:29,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5816 states. [2020-07-20 21:58:29,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5816 states to 5816 states and 7299 transitions. [2020-07-20 21:58:29,633 INFO L78 Accepts]: Start accepts. Automaton has 5816 states and 7299 transitions. Word has length 184 [2020-07-20 21:58:29,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:58:29,634 INFO L479 AbstractCegarLoop]: Abstraction has 5816 states and 7299 transitions. [2020-07-20 21:58:29,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 21:58:29,634 INFO L276 IsEmpty]: Start isEmpty. Operand 5816 states and 7299 transitions. [2020-07-20 21:58:29,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-07-20 21:58:29,658 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:58:29,658 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:58:29,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:58:29,872 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:58:29,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:58:29,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1538144970, now seen corresponding path program 1 times [2020-07-20 21:58:29,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:58:29,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334985808] [2020-07-20 21:58:29,874 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:58:30,062 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:58:30,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:58:30,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 21:58:30,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:58:30,147 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-07-20 21:58:30,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:58:30,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334985808] [2020-07-20 21:58:30,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:58:30,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 21:58:30,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092025566] [2020-07-20 21:58:30,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 21:58:30,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:58:30,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 21:58:30,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:58:30,152 INFO L87 Difference]: Start difference. First operand 5816 states and 7299 transitions. Second operand 3 states. [2020-07-20 21:58:30,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:58:30,976 INFO L93 Difference]: Finished difference Result 10000 states and 12551 transitions. [2020-07-20 21:58:30,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 21:58:30,977 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 220 [2020-07-20 21:58:30,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:58:30,978 INFO L225 Difference]: With dead ends: 10000 [2020-07-20 21:58:30,978 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 21:58:31,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:58:31,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 21:58:31,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 21:58:31,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 21:58:31,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 21:58:31,007 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 220 [2020-07-20 21:58:31,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:58:31,008 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 21:58:31,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 21:58:31,008 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 21:58:31,008 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 21:58:31,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:58:31,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 21:58:31,701 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 48 [2020-07-20 21:58:31,845 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 48 [2020-07-20 21:58:32,726 WARN L193 SmtUtils]: Spent 824.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 55 [2020-07-20 21:58:32,930 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 27 [2020-07-20 21:58:33,086 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 27 [2020-07-20 21:58:33,091 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 21:58:33,091 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a8~0 |old(~a8~0)|) (<= ~a20~0 |old(~a20~0)|) (<= |old(~a16~0)| ~a16~0)) [2020-07-20 21:58:33,092 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 21:58:33,092 INFO L268 CegarLoopResult]: For program point L333(lines 333 390) no Hoare annotation was computed. [2020-07-20 21:58:33,092 INFO L268 CegarLoopResult]: For program point L102(lines 102 390) no Hoare annotation was computed. [2020-07-20 21:58:33,092 INFO L268 CegarLoopResult]: For program point L565-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,092 INFO L268 CegarLoopResult]: For program point L532-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,092 INFO L268 CegarLoopResult]: For program point L499-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,092 INFO L268 CegarLoopResult]: For program point L466-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,092 INFO L268 CegarLoopResult]: For program point L433-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,092 INFO L268 CegarLoopResult]: For program point L400-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,092 INFO L268 CegarLoopResult]: For program point L268(lines 268 390) no Hoare annotation was computed. [2020-07-20 21:58:33,093 INFO L268 CegarLoopResult]: For program point L136(lines 136 390) no Hoare annotation was computed. [2020-07-20 21:58:33,093 INFO L268 CegarLoopResult]: For program point L566(line 566) no Hoare annotation was computed. [2020-07-20 21:58:33,093 INFO L268 CegarLoopResult]: For program point L533(line 533) no Hoare annotation was computed. [2020-07-20 21:58:33,093 INFO L268 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2020-07-20 21:58:33,093 INFO L268 CegarLoopResult]: For program point L467(line 467) no Hoare annotation was computed. [2020-07-20 21:58:33,093 INFO L268 CegarLoopResult]: For program point L434(line 434) no Hoare annotation was computed. [2020-07-20 21:58:33,093 INFO L268 CegarLoopResult]: For program point L401(line 401) no Hoare annotation was computed. [2020-07-20 21:58:33,093 INFO L268 CegarLoopResult]: For program point L203(lines 203 390) no Hoare annotation was computed. [2020-07-20 21:58:33,094 INFO L268 CegarLoopResult]: For program point L72(lines 72 390) no Hoare annotation was computed. [2020-07-20 21:58:33,094 INFO L268 CegarLoopResult]: For program point L568-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,094 INFO L268 CegarLoopResult]: For program point L535-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,094 INFO L268 CegarLoopResult]: For program point L502-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,094 INFO L268 CegarLoopResult]: For program point L469-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,094 INFO L268 CegarLoopResult]: For program point L436-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,094 INFO L268 CegarLoopResult]: For program point L403-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,095 INFO L268 CegarLoopResult]: For program point L337(lines 337 390) no Hoare annotation was computed. [2020-07-20 21:58:33,095 INFO L268 CegarLoopResult]: For program point L238(lines 238 390) no Hoare annotation was computed. [2020-07-20 21:58:33,095 INFO L268 CegarLoopResult]: For program point L569(line 569) no Hoare annotation was computed. [2020-07-20 21:58:33,095 INFO L268 CegarLoopResult]: For program point L536(line 536) no Hoare annotation was computed. [2020-07-20 21:58:33,095 INFO L268 CegarLoopResult]: For program point L503(line 503) no Hoare annotation was computed. [2020-07-20 21:58:33,095 INFO L268 CegarLoopResult]: For program point L470(line 470) no Hoare annotation was computed. [2020-07-20 21:58:33,095 INFO L268 CegarLoopResult]: For program point L437(line 437) no Hoare annotation was computed. [2020-07-20 21:58:33,095 INFO L268 CegarLoopResult]: For program point L404(line 404) no Hoare annotation was computed. [2020-07-20 21:58:33,096 INFO L268 CegarLoopResult]: For program point L173(lines 173 390) no Hoare annotation was computed. [2020-07-20 21:58:33,096 INFO L268 CegarLoopResult]: For program point L140(lines 140 390) no Hoare annotation was computed. [2020-07-20 21:58:33,096 INFO L268 CegarLoopResult]: For program point L372(lines 372 390) no Hoare annotation was computed. [2020-07-20 21:58:33,096 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 500) no Hoare annotation was computed. [2020-07-20 21:58:33,096 INFO L268 CegarLoopResult]: For program point L306(lines 306 390) no Hoare annotation was computed. [2020-07-20 21:58:33,096 INFO L268 CegarLoopResult]: For program point L273(lines 273 390) no Hoare annotation was computed. [2020-07-20 21:58:33,096 INFO L268 CegarLoopResult]: For program point L108(lines 108 390) no Hoare annotation was computed. [2020-07-20 21:58:33,096 INFO L268 CegarLoopResult]: For program point L571-1(lines 571 573) no Hoare annotation was computed. [2020-07-20 21:58:33,096 INFO L268 CegarLoopResult]: For program point L538-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,097 INFO L268 CegarLoopResult]: For program point L505-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,097 INFO L268 CegarLoopResult]: For program point L472-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,097 INFO L268 CegarLoopResult]: For program point L439-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,097 INFO L268 CegarLoopResult]: For program point L406-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,097 INFO L268 CegarLoopResult]: For program point L208(lines 208 390) no Hoare annotation was computed. [2020-07-20 21:58:33,097 INFO L268 CegarLoopResult]: For program point L43(lines 43 390) no Hoare annotation was computed. [2020-07-20 21:58:33,097 INFO L268 CegarLoopResult]: For program point L572(line 572) no Hoare annotation was computed. [2020-07-20 21:58:33,097 INFO L268 CegarLoopResult]: For program point L539(line 539) no Hoare annotation was computed. [2020-07-20 21:58:33,097 INFO L268 CegarLoopResult]: For program point L506(line 506) no Hoare annotation was computed. [2020-07-20 21:58:33,097 INFO L268 CegarLoopResult]: For program point L473(line 473) no Hoare annotation was computed. [2020-07-20 21:58:33,098 INFO L268 CegarLoopResult]: For program point L440(line 440) no Hoare annotation was computed. [2020-07-20 21:58:33,098 INFO L268 CegarLoopResult]: For program point L407(line 407) no Hoare annotation was computed. [2020-07-20 21:58:33,098 INFO L268 CegarLoopResult]: For program point L144(lines 144 390) no Hoare annotation was computed. [2020-07-20 21:58:33,098 INFO L268 CegarLoopResult]: For program point L541-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,098 INFO L268 CegarLoopResult]: For program point L508-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,098 INFO L268 CegarLoopResult]: For program point L475-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,098 INFO L268 CegarLoopResult]: For program point L442-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,098 INFO L268 CegarLoopResult]: For program point L409-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,099 INFO L268 CegarLoopResult]: For program point L178(lines 178 390) no Hoare annotation was computed. [2020-07-20 21:58:33,099 INFO L268 CegarLoopResult]: For program point L542(line 542) no Hoare annotation was computed. [2020-07-20 21:58:33,099 INFO L268 CegarLoopResult]: For program point L509(line 509) no Hoare annotation was computed. [2020-07-20 21:58:33,099 INFO L268 CegarLoopResult]: For program point L476(line 476) no Hoare annotation was computed. [2020-07-20 21:58:33,099 INFO L268 CegarLoopResult]: For program point L443(line 443) no Hoare annotation was computed. [2020-07-20 21:58:33,099 INFO L268 CegarLoopResult]: For program point L410(line 410) no Hoare annotation was computed. [2020-07-20 21:58:33,099 INFO L268 CegarLoopResult]: For program point L377(lines 377 390) no Hoare annotation was computed. [2020-07-20 21:58:33,099 INFO L268 CegarLoopResult]: For program point L278(lines 278 390) no Hoare annotation was computed. [2020-07-20 21:58:33,099 INFO L268 CegarLoopResult]: For program point L245(lines 245 390) no Hoare annotation was computed. [2020-07-20 21:58:33,100 INFO L268 CegarLoopResult]: For program point L80(lines 80 390) no Hoare annotation was computed. [2020-07-20 21:58:33,100 INFO L268 CegarLoopResult]: For program point L345(lines 345 390) no Hoare annotation was computed. [2020-07-20 21:58:33,100 INFO L268 CegarLoopResult]: For program point L312(lines 312 390) no Hoare annotation was computed. [2020-07-20 21:58:33,100 INFO L268 CegarLoopResult]: For program point L114(lines 114 390) no Hoare annotation was computed. [2020-07-20 21:58:33,100 INFO L268 CegarLoopResult]: For program point L544-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,100 INFO L268 CegarLoopResult]: For program point L511-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,100 INFO L268 CegarLoopResult]: For program point L478-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,100 INFO L268 CegarLoopResult]: For program point L445-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,100 INFO L268 CegarLoopResult]: For program point L412-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,101 INFO L268 CegarLoopResult]: For program point L214(lines 214 390) no Hoare annotation was computed. [2020-07-20 21:58:33,101 INFO L268 CegarLoopResult]: For program point L148(lines 148 390) no Hoare annotation was computed. [2020-07-20 21:58:33,101 INFO L268 CegarLoopResult]: For program point L49(lines 49 390) no Hoare annotation was computed. [2020-07-20 21:58:33,101 INFO L268 CegarLoopResult]: For program point L545(line 545) no Hoare annotation was computed. [2020-07-20 21:58:33,101 INFO L268 CegarLoopResult]: For program point L512(line 512) no Hoare annotation was computed. [2020-07-20 21:58:33,101 INFO L268 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2020-07-20 21:58:33,101 INFO L268 CegarLoopResult]: For program point L446(line 446) no Hoare annotation was computed. [2020-07-20 21:58:33,102 INFO L268 CegarLoopResult]: For program point L413(line 413) no Hoare annotation was computed. [2020-07-20 21:58:33,102 INFO L268 CegarLoopResult]: For program point L84(lines 84 390) no Hoare annotation was computed. [2020-07-20 21:58:33,102 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,102 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,102 INFO L268 CegarLoopResult]: For program point L547-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,102 INFO L268 CegarLoopResult]: For program point L514-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,102 INFO L268 CegarLoopResult]: For program point L481-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,102 INFO L268 CegarLoopResult]: For program point L448-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,103 INFO L268 CegarLoopResult]: For program point L382(lines 382 390) no Hoare annotation was computed. [2020-07-20 21:58:33,103 INFO L268 CegarLoopResult]: For program point L415-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,103 INFO L268 CegarLoopResult]: For program point L316(lines 316 390) no Hoare annotation was computed. [2020-07-20 21:58:33,103 INFO L268 CegarLoopResult]: For program point L250(lines 250 390) no Hoare annotation was computed. [2020-07-20 21:58:33,103 INFO L268 CegarLoopResult]: For program point L548(line 548) no Hoare annotation was computed. [2020-07-20 21:58:33,103 INFO L268 CegarLoopResult]: For program point L515(line 515) no Hoare annotation was computed. [2020-07-20 21:58:33,103 INFO L268 CegarLoopResult]: For program point L482(line 482) no Hoare annotation was computed. [2020-07-20 21:58:33,103 INFO L268 CegarLoopResult]: For program point L449(line 449) no Hoare annotation was computed. [2020-07-20 21:58:33,103 INFO L268 CegarLoopResult]: For program point L416(line 416) no Hoare annotation was computed. [2020-07-20 21:58:33,104 INFO L268 CegarLoopResult]: For program point L218(lines 218 390) no Hoare annotation was computed. [2020-07-20 21:58:33,104 INFO L268 CegarLoopResult]: For program point L152(lines 152 390) no Hoare annotation was computed. [2020-07-20 21:58:33,104 INFO L268 CegarLoopResult]: For program point L119(lines 119 390) no Hoare annotation was computed. [2020-07-20 21:58:33,104 INFO L268 CegarLoopResult]: For program point L318(lines 318 390) no Hoare annotation was computed. [2020-07-20 21:58:33,104 INFO L268 CegarLoopResult]: For program point L186(lines 186 390) no Hoare annotation was computed. [2020-07-20 21:58:33,104 INFO L268 CegarLoopResult]: For program point L54(lines 54 390) no Hoare annotation was computed. [2020-07-20 21:58:33,104 INFO L268 CegarLoopResult]: For program point L550-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,104 INFO L268 CegarLoopResult]: For program point L517-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,104 INFO L268 CegarLoopResult]: For program point L484-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,105 INFO L268 CegarLoopResult]: For program point L451-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,105 INFO L268 CegarLoopResult]: For program point L418-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,105 INFO L268 CegarLoopResult]: For program point L286(lines 286 390) no Hoare annotation was computed. [2020-07-20 21:58:33,105 INFO L268 CegarLoopResult]: For program point L551(line 551) no Hoare annotation was computed. [2020-07-20 21:58:33,105 INFO L268 CegarLoopResult]: For program point L518(line 518) no Hoare annotation was computed. [2020-07-20 21:58:33,105 INFO L268 CegarLoopResult]: For program point L485(line 485) no Hoare annotation was computed. [2020-07-20 21:58:33,105 INFO L268 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2020-07-20 21:58:33,105 INFO L268 CegarLoopResult]: For program point L419(line 419) no Hoare annotation was computed. [2020-07-20 21:58:33,105 INFO L268 CegarLoopResult]: For program point L353(lines 353 390) no Hoare annotation was computed. [2020-07-20 21:58:33,106 INFO L268 CegarLoopResult]: For program point L189(lines 189 390) no Hoare annotation was computed. [2020-07-20 21:58:33,106 INFO L268 CegarLoopResult]: For program point L553-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,106 INFO L268 CegarLoopResult]: For program point L520-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,106 INFO L268 CegarLoopResult]: For program point L487-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,106 INFO L268 CegarLoopResult]: For program point L454-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,106 INFO L268 CegarLoopResult]: For program point L421-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,106 INFO L268 CegarLoopResult]: For program point L355(lines 355 390) no Hoare annotation was computed. [2020-07-20 21:58:33,106 INFO L268 CegarLoopResult]: For program point L256(lines 256 390) no Hoare annotation was computed. [2020-07-20 21:58:33,106 INFO L268 CegarLoopResult]: For program point L223(lines 223 390) no Hoare annotation was computed. [2020-07-20 21:58:33,107 INFO L268 CegarLoopResult]: For program point L124(lines 124 390) no Hoare annotation was computed. [2020-07-20 21:58:33,107 INFO L268 CegarLoopResult]: For program point L554(line 554) no Hoare annotation was computed. [2020-07-20 21:58:33,107 INFO L268 CegarLoopResult]: For program point L521(line 521) no Hoare annotation was computed. [2020-07-20 21:58:33,107 INFO L268 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2020-07-20 21:58:33,107 INFO L268 CegarLoopResult]: For program point L455(line 455) no Hoare annotation was computed. [2020-07-20 21:58:33,107 INFO L268 CegarLoopResult]: For program point L422(line 422) no Hoare annotation was computed. [2020-07-20 21:58:33,107 INFO L268 CegarLoopResult]: For program point L92(lines 92 390) no Hoare annotation was computed. [2020-07-20 21:58:33,108 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 30 575) the Hoare annotation is: (let ((.cse4 (not (<= |old(~a7~0)| 0))) (.cse0 (not (<= 15 |old(~a8~0)|))) (.cse6 (not (<= |old(~a16~0)| 4))) (.cse7 (<= ~a16~0 4)) (.cse1 (<= ~a8~0 |old(~a8~0)|)) (.cse2 (<= ~a20~0 |old(~a20~0)|)) (.cse3 (<= |old(~a16~0)| ~a16~0)) (.cse5 (not (<= |old(~a8~0)| 13)))) (and (or .cse0 (and .cse1 .cse2 .cse3 (<= 15 ~a8~0))) (or .cse4 (<= ~a7~0 0)) (or (and (or .cse5 .cse6) (not (<= |old(~a17~0)| 0))) (and .cse3 (or (and .cse1 (<= ~a8~0 13) .cse2 .cse7) (and .cse1 .cse2 (<= ~a17~0 0))))) (or (and .cse1 .cse2 .cse3) .cse4) (or .cse0 .cse6 .cse7) (or (and .cse1 .cse2 (<= ~a21~0 0) .cse3) (not (<= |old(~a21~0)| 0)) .cse5))) [2020-07-20 21:58:33,108 INFO L268 CegarLoopResult]: For program point L324(lines 324 390) no Hoare annotation was computed. [2020-07-20 21:58:33,108 INFO L268 CegarLoopResult]: For program point L556-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,108 INFO L268 CegarLoopResult]: For program point L523-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,108 INFO L268 CegarLoopResult]: For program point L490-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,108 INFO L268 CegarLoopResult]: For program point L457-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,108 INFO L268 CegarLoopResult]: For program point L391(lines 391 393) no Hoare annotation was computed. [2020-07-20 21:58:33,108 INFO L268 CegarLoopResult]: For program point L424-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,109 INFO L268 CegarLoopResult]: For program point L391-2(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,109 INFO L268 CegarLoopResult]: For program point L292(lines 292 390) no Hoare annotation was computed. [2020-07-20 21:58:33,109 INFO L268 CegarLoopResult]: For program point L160(lines 160 390) no Hoare annotation was computed. [2020-07-20 21:58:33,109 INFO L268 CegarLoopResult]: For program point L557(line 557) no Hoare annotation was computed. [2020-07-20 21:58:33,109 INFO L268 CegarLoopResult]: For program point L524(line 524) no Hoare annotation was computed. [2020-07-20 21:58:33,109 INFO L268 CegarLoopResult]: For program point L491(line 491) no Hoare annotation was computed. [2020-07-20 21:58:33,109 INFO L268 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2020-07-20 21:58:33,109 INFO L268 CegarLoopResult]: For program point L425(line 425) no Hoare annotation was computed. [2020-07-20 21:58:33,109 INFO L268 CegarLoopResult]: For program point L392(line 392) no Hoare annotation was computed. [2020-07-20 21:58:33,109 INFO L268 CegarLoopResult]: For program point L194(lines 194 390) no Hoare annotation was computed. [2020-07-20 21:58:33,109 INFO L268 CegarLoopResult]: For program point L62(lines 62 390) no Hoare annotation was computed. [2020-07-20 21:58:33,109 INFO L268 CegarLoopResult]: For program point L261(lines 261 390) no Hoare annotation was computed. [2020-07-20 21:58:33,109 INFO L268 CegarLoopResult]: For program point L129(lines 129 390) no Hoare annotation was computed. [2020-07-20 21:58:33,109 INFO L268 CegarLoopResult]: For program point L559-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,110 INFO L268 CegarLoopResult]: For program point L526-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,110 INFO L268 CegarLoopResult]: For program point L493-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,110 INFO L268 CegarLoopResult]: For program point L460-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,110 INFO L268 CegarLoopResult]: For program point L427-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,110 INFO L268 CegarLoopResult]: For program point L361(lines 361 390) no Hoare annotation was computed. [2020-07-20 21:58:33,110 INFO L268 CegarLoopResult]: For program point L394-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,110 INFO L268 CegarLoopResult]: For program point L97(lines 97 390) no Hoare annotation was computed. [2020-07-20 21:58:33,110 INFO L268 CegarLoopResult]: For program point L31(lines 31 390) no Hoare annotation was computed. [2020-07-20 21:58:33,110 INFO L268 CegarLoopResult]: For program point L560(line 560) no Hoare annotation was computed. [2020-07-20 21:58:33,110 INFO L268 CegarLoopResult]: For program point L527(line 527) no Hoare annotation was computed. [2020-07-20 21:58:33,110 INFO L268 CegarLoopResult]: For program point L494(line 494) no Hoare annotation was computed. [2020-07-20 21:58:33,110 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-20 21:58:33,110 INFO L268 CegarLoopResult]: For program point L428(line 428) no Hoare annotation was computed. [2020-07-20 21:58:33,110 INFO L268 CegarLoopResult]: For program point L395(line 395) no Hoare annotation was computed. [2020-07-20 21:58:33,111 INFO L268 CegarLoopResult]: For program point L329(lines 329 390) no Hoare annotation was computed. [2020-07-20 21:58:33,111 INFO L268 CegarLoopResult]: For program point L197(lines 197 390) no Hoare annotation was computed. [2020-07-20 21:58:33,111 INFO L268 CegarLoopResult]: For program point L65(lines 65 390) no Hoare annotation was computed. [2020-07-20 21:58:33,111 INFO L268 CegarLoopResult]: For program point L363(lines 363 390) no Hoare annotation was computed. [2020-07-20 21:58:33,111 INFO L268 CegarLoopResult]: For program point L231(lines 231 390) no Hoare annotation was computed. [2020-07-20 21:58:33,111 INFO L268 CegarLoopResult]: For program point L165(lines 165 390) no Hoare annotation was computed. [2020-07-20 21:58:33,111 INFO L268 CegarLoopResult]: For program point L562-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,111 INFO L268 CegarLoopResult]: For program point L529-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,111 INFO L268 CegarLoopResult]: For program point L496-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,111 INFO L268 CegarLoopResult]: For program point L463-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,111 INFO L268 CegarLoopResult]: For program point L430-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,111 INFO L268 CegarLoopResult]: For program point L397-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:58:33,111 INFO L268 CegarLoopResult]: For program point L265(lines 265 390) no Hoare annotation was computed. [2020-07-20 21:58:33,111 INFO L268 CegarLoopResult]: For program point L563(line 563) no Hoare annotation was computed. [2020-07-20 21:58:33,112 INFO L268 CegarLoopResult]: For program point L530(line 530) no Hoare annotation was computed. [2020-07-20 21:58:33,112 INFO L268 CegarLoopResult]: For program point L497(line 497) no Hoare annotation was computed. [2020-07-20 21:58:33,112 INFO L268 CegarLoopResult]: For program point L464(line 464) no Hoare annotation was computed. [2020-07-20 21:58:33,112 INFO L268 CegarLoopResult]: For program point L431(line 431) no Hoare annotation was computed. [2020-07-20 21:58:33,112 INFO L268 CegarLoopResult]: For program point L398(line 398) no Hoare annotation was computed. [2020-07-20 21:58:33,112 INFO L268 CegarLoopResult]: For program point L365(lines 365 390) no Hoare annotation was computed. [2020-07-20 21:58:33,112 INFO L268 CegarLoopResult]: For program point L299(lines 299 390) no Hoare annotation was computed. [2020-07-20 21:58:33,112 INFO L268 CegarLoopResult]: For program point L35(lines 35 390) no Hoare annotation was computed. [2020-07-20 21:58:33,112 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 21:58:33,112 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a7~0 0) (<= 15 ~a8~0) (< 4 ~a16~0)) [2020-07-20 21:58:33,112 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 21:58:33,112 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 21:58:33,113 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 577 594) the Hoare annotation is: (or (and (<= ~a8~0 |old(~a8~0)|) (<= ~a20~0 |old(~a20~0)|) (<= |old(~a16~0)| ~a16~0) (<= ~a7~0 0) (<= 15 ~a8~0)) (not (<= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (not (< 4 |old(~a16~0)|))) [2020-07-20 21:58:33,113 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 577 594) no Hoare annotation was computed. [2020-07-20 21:58:33,113 INFO L264 CegarLoopResult]: At program point L591(line 591) the Hoare annotation is: (let ((.cse0 (<= ~a8~0 13))) (or (and .cse0 (<= ~a16~0 4)) (not (<= 15 |old(~a8~0)|)) (<= ~a17~0 0) (not (<= |old(~a7~0)| 0)) (<= ~a7~0 0) (<= 15 ~a8~0) (not (< 4 |old(~a16~0)|)) (and .cse0 (<= ~a21~0 0)))) [2020-07-20 21:58:33,113 INFO L268 CegarLoopResult]: For program point L591-1(line 591) no Hoare annotation was computed. [2020-07-20 21:58:33,113 INFO L268 CegarLoopResult]: For program point L588(line 588) no Hoare annotation was computed. [2020-07-20 21:58:33,113 INFO L264 CegarLoopResult]: At program point L583-2(lines 583 593) the Hoare annotation is: (let ((.cse0 (<= ~a8~0 13))) (or (and .cse0 (<= ~a16~0 4)) (not (<= 15 |old(~a8~0)|)) (<= ~a17~0 0) (not (<= |old(~a7~0)| 0)) (<= ~a7~0 0) (<= 15 ~a8~0) (not (< 4 |old(~a16~0)|)) (and .cse0 (<= ~a21~0 0)))) [2020-07-20 21:58:33,113 INFO L268 CegarLoopResult]: For program point L583-3(lines 577 594) no Hoare annotation was computed. [2020-07-20 21:58:33,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 09:58:33 BoogieIcfgContainer [2020-07-20 21:58:33,134 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 21:58:33,136 INFO L168 Benchmark]: Toolchain (without parser) took 18212.31 ms. Allocated memory was 138.4 MB in the beginning and 501.2 MB in the end (delta: 362.8 MB). Free memory was 100.4 MB in the beginning and 396.8 MB in the end (delta: -296.4 MB). Peak memory consumption was 316.1 MB. Max. memory is 7.1 GB. [2020-07-20 21:58:33,137 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 138.4 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 21:58:33,138 INFO L168 Benchmark]: CACSL2BoogieTranslator took 919.48 ms. Allocated memory was 138.4 MB in the beginning and 204.5 MB in the end (delta: 66.1 MB). Free memory was 100.0 MB in the beginning and 170.5 MB in the end (delta: -70.5 MB). Peak memory consumption was 33.5 MB. Max. memory is 7.1 GB. [2020-07-20 21:58:33,139 INFO L168 Benchmark]: Boogie Preprocessor took 131.82 ms. Allocated memory is still 204.5 MB. Free memory was 170.5 MB in the beginning and 165.4 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. [2020-07-20 21:58:33,139 INFO L168 Benchmark]: RCFGBuilder took 1351.11 ms. Allocated memory was 204.5 MB in the beginning and 235.9 MB in the end (delta: 31.5 MB). Free memory was 165.4 MB in the beginning and 179.6 MB in the end (delta: -14.2 MB). Peak memory consumption was 84.1 MB. Max. memory is 7.1 GB. [2020-07-20 21:58:33,140 INFO L168 Benchmark]: TraceAbstraction took 15799.98 ms. Allocated memory was 235.9 MB in the beginning and 501.2 MB in the end (delta: 265.3 MB). Free memory was 179.6 MB in the beginning and 396.8 MB in the end (delta: -217.2 MB). Peak memory consumption was 297.7 MB. Max. memory is 7.1 GB. [2020-07-20 21:58:33,144 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 138.4 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 919.48 ms. Allocated memory was 138.4 MB in the beginning and 204.5 MB in the end (delta: 66.1 MB). Free memory was 100.0 MB in the beginning and 170.5 MB in the end (delta: -70.5 MB). Peak memory consumption was 33.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.82 ms. Allocated memory is still 204.5 MB. Free memory was 170.5 MB in the beginning and 165.4 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1351.11 ms. Allocated memory was 204.5 MB in the beginning and 235.9 MB in the end (delta: 31.5 MB). Free memory was 165.4 MB in the beginning and 179.6 MB in the end (delta: -14.2 MB). Peak memory consumption was 84.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15799.98 ms. Allocated memory was 235.9 MB in the beginning and 501.2 MB in the end (delta: 265.3 MB). Free memory was 179.6 MB in the beginning and 396.8 MB in the end (delta: -217.2 MB). Peak memory consumption was 297.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 500]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 583]: Loop Invariant Derived loop invariant: (((((((a8 <= 13 && a16 <= 4) || !(15 <= \old(a8))) || a17 <= 0) || !(\old(a7) <= 0)) || a7 <= 0) || 15 <= a8) || !(4 < \old(a16))) || (a8 <= 13 && a21 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.7s, OverallIterations: 8, TraceHistogramMax: 5, AutomataDifference: 8.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 830 SDtfs, 1936 SDslu, 240 SDs, 0 SdLazy, 5114 SolverSat, 742 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1724 GetRequests, 1691 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5816occurred 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: 0.7s AutomataMinimizationTime, 8 MinimizatonAttempts, 2878 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 160 PreInvPairs, 246 NumberOfFragments, 241 HoareAnnotationTreeSize, 160 FomulaSimplifications, 6722 FormulaSimplificationTreeSizeReduction, 0.6s HoareSimplificationTime, 7 FomulaSimplificationsInter, 2531 FormulaSimplificationTreeSizeReductionInter, 1.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 1223 NumberOfCodeBlocks, 1223 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 1701 ConstructedInterpolants, 0 QuantifiedInterpolants, 561281 SizeOfPredicates, 14 NumberOfNonLiveVariables, 3586 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 737/759 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...