/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 14:08:52,490 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 14:08:52,492 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 14:08:52,506 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 14:08:52,506 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 14:08:52,509 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 14:08:52,510 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 14:08:52,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 14:08:52,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 14:08:52,518 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 14:08:52,520 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 14:08:52,527 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 14:08:52,528 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 14:08:52,530 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 14:08:52,531 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 14:08:52,533 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 14:08:52,534 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 14:08:52,535 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 14:08:52,538 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 14:08:52,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 14:08:52,545 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 14:08:52,546 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 14:08:52,547 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 14:08:52,548 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 14:08:52,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 14:08:52,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 14:08:52,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 14:08:52,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 14:08:52,571 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 14:08:52,608 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 14:08:52,608 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 14:08:52,609 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 14:08:52,610 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 14:08:52,610 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 14:08:52,613 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 14:08:52,613 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 14:08:52,614 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 14:08:52,614 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 14:08:52,614 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 14:08:52,614 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 14:08:52,614 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 14:08:52,615 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 14:08:52,615 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 14:08:52,615 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 14:08:52,615 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 14:08:52,615 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 14:08:52,616 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 14:08:52,616 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 14:08:52,616 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 14:08:52,617 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 14:08:52,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 14:08:52,617 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 14:08:52,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 14:08:52,617 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 14:08:52,618 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 14:08:52,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:08:52,618 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 14:08:52,618 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 14:08:52,618 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 14:08:52,937 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 14:08:52,953 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 14:08:52,956 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 14:08:52,957 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 14:08:52,958 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 14:08:52,958 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label06.c [2020-07-20 14:08:53,019 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b5c919df/4950624b5c57449c93493c3bdf15b32d/FLAG239d1a561 [2020-07-20 14:08:53,560 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 14:08:53,561 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label06.c [2020-07-20 14:08:53,572 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b5c919df/4950624b5c57449c93493c3bdf15b32d/FLAG239d1a561 [2020-07-20 14:08:53,846 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b5c919df/4950624b5c57449c93493c3bdf15b32d [2020-07-20 14:08:53,856 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 14:08:53,859 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 14:08:53,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 14:08:53,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 14:08:53,864 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 14:08:53,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:08:53" (1/1) ... [2020-07-20 14:08:53,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26d143f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:08:53, skipping insertion in model container [2020-07-20 14:08:53,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:08:53" (1/1) ... [2020-07-20 14:08:53,876 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 14:08:53,934 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 14:08:54,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:08:54,429 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 14:08:54,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:08:54,726 INFO L208 MainTranslator]: Completed translation [2020-07-20 14:08:54,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:08:54 WrapperNode [2020-07-20 14:08:54,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 14:08:54,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 14:08:54,727 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 14:08:54,727 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 14:08:54,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:08:54" (1/1) ... [2020-07-20 14:08:54,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:08:54" (1/1) ... [2020-07-20 14:08:54,758 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:08:54" (1/1) ... [2020-07-20 14:08:54,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:08:54" (1/1) ... [2020-07-20 14:08:54,795 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:08:54" (1/1) ... [2020-07-20 14:08:54,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:08:54" (1/1) ... [2020-07-20 14:08:54,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:08:54" (1/1) ... [2020-07-20 14:08:54,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 14:08:54,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 14:08:54,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 14:08:54,827 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 14:08:54,828 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:08:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 14:08:54,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 14:08:54,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 14:08:54,898 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-20 14:08:54,898 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 14:08:54,898 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-20 14:08:54,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 14:08:54,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 14:08:54,899 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 14:08:54,899 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 14:08:54,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 14:08:54,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 14:08:56,264 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 14:08:56,265 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 14:08:56,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:08:56 BoogieIcfgContainer [2020-07-20 14:08:56,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 14:08:56,273 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 14:08:56,274 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 14:08:56,278 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 14:08:56,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 02:08:53" (1/3) ... [2020-07-20 14:08:56,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79dcb9a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:08:56, skipping insertion in model container [2020-07-20 14:08:56,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:08:54" (2/3) ... [2020-07-20 14:08:56,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79dcb9a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:08:56, skipping insertion in model container [2020-07-20 14:08:56,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:08:56" (3/3) ... [2020-07-20 14:08:56,281 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label06.c [2020-07-20 14:08:56,294 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 14:08:56,303 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 14:08:56,321 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 14:08:56,351 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 14:08:56,351 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 14:08:56,351 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 14:08:56,352 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 14:08:56,352 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 14:08:56,352 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 14:08:56,353 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 14:08:56,353 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 14:08:56,378 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-07-20 14:08:56,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 14:08:56,387 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:08:56,388 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] [2020-07-20 14:08:56,389 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:08:56,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:08:56,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1307500665, now seen corresponding path program 1 times [2020-07-20 14:08:56,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:08:56,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34261889] [2020-07-20 14:08:56,408 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:08:56,509 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:08:56,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:08:56,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 14:08:56,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:08:56,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:08:56,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:08:56,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34261889] [2020-07-20 14:08:56,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:08:56,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:08:56,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144031915] [2020-07-20 14:08:56,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:08:56,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:08:56,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:08:56,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:08:56,603 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2020-07-20 14:08:57,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:08:57,695 INFO L93 Difference]: Finished difference Result 586 states and 1004 transitions. [2020-07-20 14:08:57,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:08:57,697 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-07-20 14:08:57,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:08:57,727 INFO L225 Difference]: With dead ends: 586 [2020-07-20 14:08:57,727 INFO L226 Difference]: Without dead ends: 294 [2020-07-20 14:08:57,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:08:57,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-07-20 14:08:57,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2020-07-20 14:08:57,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-07-20 14:08:57,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 426 transitions. [2020-07-20 14:08:57,839 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 426 transitions. Word has length 30 [2020-07-20 14:08:57,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:08:57,840 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 426 transitions. [2020-07-20 14:08:57,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:08:57,840 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 426 transitions. [2020-07-20 14:08:57,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-07-20 14:08:57,845 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:08:57,846 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:08:58,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:08:58,061 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:08:58,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:08:58,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1592388862, now seen corresponding path program 1 times [2020-07-20 14:08:58,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:08:58,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424205005] [2020-07-20 14:08:58,063 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:08:58,148 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:08:58,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:08:58,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 14:08:58,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:08:58,205 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:08:58,205 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:08:58,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424205005] [2020-07-20 14:08:58,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:08:58,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 14:08:58,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681762561] [2020-07-20 14:08:58,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:08:58,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:08:58,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:08:58,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:08:58,209 INFO L87 Difference]: Start difference. First operand 294 states and 426 transitions. Second operand 5 states. [2020-07-20 14:08:59,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:08:59,246 INFO L93 Difference]: Finished difference Result 890 states and 1316 transitions. [2020-07-20 14:08:59,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 14:08:59,249 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-07-20 14:08:59,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:08:59,253 INFO L225 Difference]: With dead ends: 890 [2020-07-20 14:08:59,254 INFO L226 Difference]: Without dead ends: 602 [2020-07-20 14:08:59,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-20 14:08:59,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-07-20 14:08:59,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 590. [2020-07-20 14:08:59,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-07-20 14:08:59,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 775 transitions. [2020-07-20 14:08:59,297 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 775 transitions. Word has length 104 [2020-07-20 14:08:59,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:08:59,298 INFO L479 AbstractCegarLoop]: Abstraction has 590 states and 775 transitions. [2020-07-20 14:08:59,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:08:59,299 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 775 transitions. [2020-07-20 14:08:59,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-07-20 14:08:59,303 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:08:59,303 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:08:59,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:08:59,517 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:08:59,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:08:59,518 INFO L82 PathProgramCache]: Analyzing trace with hash -2136138939, now seen corresponding path program 1 times [2020-07-20 14:08:59,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:08:59,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2063258554] [2020-07-20 14:08:59,520 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:08:59,604 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:08:59,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:08:59,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:08:59,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:08:59,635 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:08:59,635 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:08:59,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2063258554] [2020-07-20 14:08:59,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:08:59,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:08:59,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744715454] [2020-07-20 14:08:59,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:08:59,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:08:59,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:08:59,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:08:59,638 INFO L87 Difference]: Start difference. First operand 590 states and 775 transitions. Second operand 3 states. [2020-07-20 14:09:00,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:09:00,283 INFO L93 Difference]: Finished difference Result 1025 states and 1394 transitions. [2020-07-20 14:09:00,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:09:00,284 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 109 [2020-07-20 14:09:00,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:09:00,291 INFO L225 Difference]: With dead ends: 1025 [2020-07-20 14:09:00,291 INFO L226 Difference]: Without dead ends: 1023 [2020-07-20 14:09:00,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:09:00,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2020-07-20 14:09:00,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 1023. [2020-07-20 14:09:00,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2020-07-20 14:09:00,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1392 transitions. [2020-07-20 14:09:00,346 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1392 transitions. Word has length 109 [2020-07-20 14:09:00,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:09:00,349 INFO L479 AbstractCegarLoop]: Abstraction has 1023 states and 1392 transitions. [2020-07-20 14:09:00,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:09:00,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1392 transitions. [2020-07-20 14:09:00,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-07-20 14:09:00,364 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:09:00,364 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:09:00,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:00,580 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:09:00,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:09:00,581 INFO L82 PathProgramCache]: Analyzing trace with hash -831400030, now seen corresponding path program 1 times [2020-07-20 14:09:00,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:09:00,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006858869] [2020-07-20 14:09:00,582 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:00,683 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:09:00,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:09:00,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 14:09:00,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:09:00,750 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:09:00,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:09:00,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006858869] [2020-07-20 14:09:00,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:09:00,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 14:09:00,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278661142] [2020-07-20 14:09:00,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:09:00,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:09:00,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:09:00,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:09:00,753 INFO L87 Difference]: Start difference. First operand 1023 states and 1392 transitions. Second operand 5 states. [2020-07-20 14:09:01,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:09:01,819 INFO L93 Difference]: Finished difference Result 2650 states and 3703 transitions. [2020-07-20 14:09:01,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 14:09:01,823 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-07-20 14:09:01,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:09:01,835 INFO L225 Difference]: With dead ends: 2650 [2020-07-20 14:09:01,836 INFO L226 Difference]: Without dead ends: 1633 [2020-07-20 14:09:01,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-20 14:09:01,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2020-07-20 14:09:01,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1470. [2020-07-20 14:09:01,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1470 states. [2020-07-20 14:09:01,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 1920 transitions. [2020-07-20 14:09:01,913 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 1920 transitions. Word has length 152 [2020-07-20 14:09:01,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:09:01,915 INFO L479 AbstractCegarLoop]: Abstraction has 1470 states and 1920 transitions. [2020-07-20 14:09:01,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:09:01,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 1920 transitions. [2020-07-20 14:09:01,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-07-20 14:09:01,925 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:09:01,925 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:09:02,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:02,139 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:09:02,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:09:02,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1765771600, now seen corresponding path program 1 times [2020-07-20 14:09:02,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:09:02,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278395227] [2020-07-20 14:09:02,141 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:02,289 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:09:02,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:09:02,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:09:02,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:09:02,369 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:09:02,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:09:02,490 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:09:02,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278395227] [2020-07-20 14:09:02,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:09:02,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-20 14:09:02,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964576311] [2020-07-20 14:09:02,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 14:09:02,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:09:02,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 14:09:02,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-20 14:09:02,493 INFO L87 Difference]: Start difference. First operand 1470 states and 1920 transitions. Second operand 7 states. [2020-07-20 14:09:03,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:09:03,968 INFO L93 Difference]: Finished difference Result 3816 states and 5119 transitions. [2020-07-20 14:09:03,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 14:09:03,970 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 191 [2020-07-20 14:09:03,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:09:03,983 INFO L225 Difference]: With dead ends: 3816 [2020-07-20 14:09:03,984 INFO L226 Difference]: Without dead ends: 2352 [2020-07-20 14:09:03,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 377 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-07-20 14:09:03,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2020-07-20 14:09:04,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 2201. [2020-07-20 14:09:04,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2201 states. [2020-07-20 14:09:04,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2201 states to 2201 states and 2782 transitions. [2020-07-20 14:09:04,067 INFO L78 Accepts]: Start accepts. Automaton has 2201 states and 2782 transitions. Word has length 191 [2020-07-20 14:09:04,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:09:04,068 INFO L479 AbstractCegarLoop]: Abstraction has 2201 states and 2782 transitions. [2020-07-20 14:09:04,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 14:09:04,068 INFO L276 IsEmpty]: Start isEmpty. Operand 2201 states and 2782 transitions. [2020-07-20 14:09:04,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-07-20 14:09:04,073 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:09:04,074 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:09:04,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:04,284 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:09:04,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:09:04,284 INFO L82 PathProgramCache]: Analyzing trace with hash -439866795, now seen corresponding path program 1 times [2020-07-20 14:09:04,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:09:04,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [349176831] [2020-07-20 14:09:04,286 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:04,413 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:09:04,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:09:04,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:09:04,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:09:04,470 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 114 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:09:04,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:09:04,613 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 114 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:09:04,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [349176831] [2020-07-20 14:09:04,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:09:04,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-20 14:09:04,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666068867] [2020-07-20 14:09:04,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 14:09:04,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:09:04,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 14:09:04,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 14:09:04,616 INFO L87 Difference]: Start difference. First operand 2201 states and 2782 transitions. Second operand 6 states. [2020-07-20 14:09:05,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:09:05,606 INFO L93 Difference]: Finished difference Result 4849 states and 6224 transitions. [2020-07-20 14:09:05,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 14:09:05,607 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 198 [2020-07-20 14:09:05,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:09:05,629 INFO L225 Difference]: With dead ends: 4849 [2020-07-20 14:09:05,629 INFO L226 Difference]: Without dead ends: 2654 [2020-07-20 14:09:05,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 390 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-20 14:09:05,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2654 states. [2020-07-20 14:09:05,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2654 to 2646. [2020-07-20 14:09:05,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2646 states. [2020-07-20 14:09:05,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2646 states to 2646 states and 3363 transitions. [2020-07-20 14:09:05,730 INFO L78 Accepts]: Start accepts. Automaton has 2646 states and 3363 transitions. Word has length 198 [2020-07-20 14:09:05,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:09:05,730 INFO L479 AbstractCegarLoop]: Abstraction has 2646 states and 3363 transitions. [2020-07-20 14:09:05,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 14:09:05,731 INFO L276 IsEmpty]: Start isEmpty. Operand 2646 states and 3363 transitions. [2020-07-20 14:09:05,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-07-20 14:09:05,736 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:09:05,736 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:09:05,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:05,950 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:09:05,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:09:05,950 INFO L82 PathProgramCache]: Analyzing trace with hash -674244364, now seen corresponding path program 1 times [2020-07-20 14:09:05,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:09:05,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1554342428] [2020-07-20 14:09:05,951 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:06,075 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:09:06,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:09:06,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:09:06,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:09:06,153 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-07-20 14:09:06,153 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:09:06,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1554342428] [2020-07-20 14:09:06,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:09:06,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:09:06,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720293180] [2020-07-20 14:09:06,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:09:06,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:09:06,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:09:06,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:09:06,156 INFO L87 Difference]: Start difference. First operand 2646 states and 3363 transitions. Second operand 3 states. [2020-07-20 14:09:06,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:09:06,744 INFO L93 Difference]: Finished difference Result 5286 states and 6729 transitions. [2020-07-20 14:09:06,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:09:06,752 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 205 [2020-07-20 14:09:06,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:09:06,765 INFO L225 Difference]: With dead ends: 5286 [2020-07-20 14:09:06,765 INFO L226 Difference]: Without dead ends: 2646 [2020-07-20 14:09:06,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:09:06,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2646 states. [2020-07-20 14:09:06,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2646 to 2215. [2020-07-20 14:09:06,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2215 states. [2020-07-20 14:09:06,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2215 states to 2215 states and 2632 transitions. [2020-07-20 14:09:06,839 INFO L78 Accepts]: Start accepts. Automaton has 2215 states and 2632 transitions. Word has length 205 [2020-07-20 14:09:06,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:09:06,840 INFO L479 AbstractCegarLoop]: Abstraction has 2215 states and 2632 transitions. [2020-07-20 14:09:06,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:09:06,840 INFO L276 IsEmpty]: Start isEmpty. Operand 2215 states and 2632 transitions. [2020-07-20 14:09:06,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-07-20 14:09:06,844 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:09:06,844 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:09:07,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:07,058 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:09:07,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:09:07,059 INFO L82 PathProgramCache]: Analyzing trace with hash 29112225, now seen corresponding path program 1 times [2020-07-20 14:09:07,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:09:07,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925401017] [2020-07-20 14:09:07,061 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:07,220 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:09:07,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:09:07,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:09:07,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:09:07,256 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-07-20 14:09:07,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:09:07,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925401017] [2020-07-20 14:09:07,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:09:07,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:09:07,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57300775] [2020-07-20 14:09:07,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:09:07,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:09:07,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:09:07,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:09:07,258 INFO L87 Difference]: Start difference. First operand 2215 states and 2632 transitions. Second operand 3 states. [2020-07-20 14:09:07,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:09:07,914 INFO L93 Difference]: Finished difference Result 2646 states and 3150 transitions. [2020-07-20 14:09:07,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:09:07,914 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 208 [2020-07-20 14:09:07,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:09:07,915 INFO L225 Difference]: With dead ends: 2646 [2020-07-20 14:09:07,915 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 14:09:07,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:09:07,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 14:09:07,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 14:09:07,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 14:09:07,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 14:09:07,921 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 208 [2020-07-20 14:09:07,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:09:07,922 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 14:09:07,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:09:07,922 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 14:09:07,922 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 14:09:08,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:08,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 14:09:09,007 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 54 [2020-07-20 14:09:09,185 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 36 [2020-07-20 14:09:09,339 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 36 [2020-07-20 14:09:09,343 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 14:09:09,343 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a10~0 |old(~a10~0)|) (<= ~a19~0 |old(~a19~0)|)) [2020-07-20 14:09:09,343 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 14:09:09,344 INFO L268 CegarLoopResult]: For program point L465(lines 465 572) no Hoare annotation was computed. [2020-07-20 14:09:09,344 INFO L268 CegarLoopResult]: For program point L201-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,344 INFO L268 CegarLoopResult]: For program point L168-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,344 INFO L268 CegarLoopResult]: For program point L135-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,344 INFO L268 CegarLoopResult]: For program point L102-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,345 INFO L268 CegarLoopResult]: For program point L69-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,345 INFO L268 CegarLoopResult]: For program point L36-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,345 INFO L268 CegarLoopResult]: For program point L499(lines 499 572) no Hoare annotation was computed. [2020-07-20 14:09:09,346 INFO L268 CegarLoopResult]: For program point L301(lines 301 572) no Hoare annotation was computed. [2020-07-20 14:09:09,346 INFO L268 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2020-07-20 14:09:09,346 INFO L268 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2020-07-20 14:09:09,347 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-07-20 14:09:09,347 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-07-20 14:09:09,347 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-07-20 14:09:09,347 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-07-20 14:09:09,347 INFO L268 CegarLoopResult]: For program point L335(lines 335 572) no Hoare annotation was computed. [2020-07-20 14:09:09,348 INFO L268 CegarLoopResult]: For program point L236(lines 236 572) no Hoare annotation was computed. [2020-07-20 14:09:09,349 INFO L268 CegarLoopResult]: For program point L534(lines 534 572) no Hoare annotation was computed. [2020-07-20 14:09:09,349 INFO L268 CegarLoopResult]: For program point L171-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,349 INFO L268 CegarLoopResult]: For program point L138-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,349 INFO L268 CegarLoopResult]: For program point L105-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,349 INFO L268 CegarLoopResult]: For program point L72-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,349 INFO L268 CegarLoopResult]: For program point L39-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,350 INFO L268 CegarLoopResult]: For program point L436(lines 436 572) no Hoare annotation was computed. [2020-07-20 14:09:09,350 INFO L268 CegarLoopResult]: For program point L403(lines 403 572) no Hoare annotation was computed. [2020-07-20 14:09:09,350 INFO L268 CegarLoopResult]: For program point L370(lines 370 572) no Hoare annotation was computed. [2020-07-20 14:09:09,350 INFO L268 CegarLoopResult]: For program point L271(lines 271 572) no Hoare annotation was computed. [2020-07-20 14:09:09,350 INFO L268 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2020-07-20 14:09:09,352 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-07-20 14:09:09,352 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-07-20 14:09:09,353 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-07-20 14:09:09,353 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-07-20 14:09:09,353 INFO L268 CegarLoopResult]: For program point L569(lines 569 572) no Hoare annotation was computed. [2020-07-20 14:09:09,353 INFO L268 CegarLoopResult]: For program point L239(lines 239 572) no Hoare annotation was computed. [2020-07-20 14:09:09,353 INFO L268 CegarLoopResult]: For program point L504(lines 504 572) no Hoare annotation was computed. [2020-07-20 14:09:09,353 INFO L268 CegarLoopResult]: For program point L471(lines 471 572) no Hoare annotation was computed. [2020-07-20 14:09:09,353 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 76) no Hoare annotation was computed. [2020-07-20 14:09:09,354 INFO L268 CegarLoopResult]: For program point L306(lines 306 572) no Hoare annotation was computed. [2020-07-20 14:09:09,354 INFO L268 CegarLoopResult]: For program point L174-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,354 INFO L268 CegarLoopResult]: For program point L141-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,354 INFO L268 CegarLoopResult]: For program point L108-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,354 INFO L268 CegarLoopResult]: For program point L75-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,354 INFO L268 CegarLoopResult]: For program point L42-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,354 INFO L268 CegarLoopResult]: For program point L340(lines 340 572) no Hoare annotation was computed. [2020-07-20 14:09:09,355 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-20 14:09:09,355 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-07-20 14:09:09,355 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-07-20 14:09:09,355 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-07-20 14:09:09,355 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-07-20 14:09:09,355 INFO L268 CegarLoopResult]: For program point L540(lines 540 572) no Hoare annotation was computed. [2020-07-20 14:09:09,356 INFO L268 CegarLoopResult]: For program point L408(lines 408 572) no Hoare annotation was computed. [2020-07-20 14:09:09,356 INFO L268 CegarLoopResult]: For program point L375(lines 375 572) no Hoare annotation was computed. [2020-07-20 14:09:09,356 INFO L268 CegarLoopResult]: For program point L210(lines 210 572) no Hoare annotation was computed. [2020-07-20 14:09:09,356 INFO L268 CegarLoopResult]: For program point L177-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,356 INFO L268 CegarLoopResult]: For program point L144-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,356 INFO L268 CegarLoopResult]: For program point L111-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,358 INFO L268 CegarLoopResult]: For program point L78-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,358 INFO L268 CegarLoopResult]: For program point L45-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,358 INFO L268 CegarLoopResult]: For program point L442(lines 442 572) no Hoare annotation was computed. [2020-07-20 14:09:09,358 INFO L268 CegarLoopResult]: For program point L277(lines 277 572) no Hoare annotation was computed. [2020-07-20 14:09:09,359 INFO L268 CegarLoopResult]: For program point L244(lines 244 572) no Hoare annotation was computed. [2020-07-20 14:09:09,359 INFO L268 CegarLoopResult]: For program point L178(line 178) no Hoare annotation was computed. [2020-07-20 14:09:09,359 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-07-20 14:09:09,359 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-07-20 14:09:09,359 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-07-20 14:09:09,359 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-20 14:09:09,359 INFO L268 CegarLoopResult]: For program point L509(lines 509 572) no Hoare annotation was computed. [2020-07-20 14:09:09,359 INFO L268 CegarLoopResult]: For program point L476(lines 476 572) no Hoare annotation was computed. [2020-07-20 14:09:09,359 INFO L268 CegarLoopResult]: For program point L378(lines 378 572) no Hoare annotation was computed. [2020-07-20 14:09:09,360 INFO L268 CegarLoopResult]: For program point L345(lines 345 572) no Hoare annotation was computed. [2020-07-20 14:09:09,360 INFO L268 CegarLoopResult]: For program point L312(lines 312 572) no Hoare annotation was computed. [2020-07-20 14:09:09,360 INFO L268 CegarLoopResult]: For program point L180-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,360 INFO L268 CegarLoopResult]: For program point L147-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,360 INFO L268 CegarLoopResult]: For program point L114-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,360 INFO L268 CegarLoopResult]: For program point L81-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,360 INFO L268 CegarLoopResult]: For program point L48-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,360 INFO L268 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2020-07-20 14:09:09,360 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-07-20 14:09:09,361 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-20 14:09:09,361 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-07-20 14:09:09,361 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-07-20 14:09:09,361 INFO L268 CegarLoopResult]: For program point L545(lines 545 572) no Hoare annotation was computed. [2020-07-20 14:09:09,361 INFO L268 CegarLoopResult]: For program point L215(lines 215 572) no Hoare annotation was computed. [2020-07-20 14:09:09,361 INFO L268 CegarLoopResult]: For program point L414(lines 414 572) no Hoare annotation was computed. [2020-07-20 14:09:09,361 INFO L268 CegarLoopResult]: For program point L249(lines 249 572) no Hoare annotation was computed. [2020-07-20 14:09:09,361 INFO L268 CegarLoopResult]: For program point L183-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,362 INFO L268 CegarLoopResult]: For program point L150-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,362 INFO L268 CegarLoopResult]: For program point L117-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,362 INFO L268 CegarLoopResult]: For program point L84-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,362 INFO L268 CegarLoopResult]: For program point L51-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,362 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,362 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,362 INFO L268 CegarLoopResult]: For program point L514(lines 514 572) no Hoare annotation was computed. [2020-07-20 14:09:09,362 INFO L268 CegarLoopResult]: For program point L481(lines 481 572) no Hoare annotation was computed. [2020-07-20 14:09:09,362 INFO L268 CegarLoopResult]: For program point L448(lines 448 572) no Hoare annotation was computed. [2020-07-20 14:09:09,363 INFO L268 CegarLoopResult]: For program point L283(lines 283 572) no Hoare annotation was computed. [2020-07-20 14:09:09,363 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-07-20 14:09:09,363 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-07-20 14:09:09,363 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-07-20 14:09:09,364 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-07-20 14:09:09,364 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-07-20 14:09:09,364 INFO L268 CegarLoopResult]: For program point L548(lines 548 572) no Hoare annotation was computed. [2020-07-20 14:09:09,364 INFO L268 CegarLoopResult]: For program point L383(lines 383 572) no Hoare annotation was computed. [2020-07-20 14:09:09,365 INFO L268 CegarLoopResult]: For program point L317(lines 317 572) no Hoare annotation was computed. [2020-07-20 14:09:09,365 INFO L268 CegarLoopResult]: For program point L351(lines 351 572) no Hoare annotation was computed. [2020-07-20 14:09:09,365 INFO L268 CegarLoopResult]: For program point L186-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,366 INFO L268 CegarLoopResult]: For program point L153-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,366 INFO L268 CegarLoopResult]: For program point L120-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,366 INFO L268 CegarLoopResult]: For program point L87-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,366 INFO L268 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-07-20 14:09:09,366 INFO L268 CegarLoopResult]: For program point L54-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,366 INFO L268 CegarLoopResult]: For program point L21-2(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,366 INFO L268 CegarLoopResult]: For program point L517(lines 517 572) no Hoare annotation was computed. [2020-07-20 14:09:09,367 INFO L268 CegarLoopResult]: For program point L286(lines 286 572) no Hoare annotation was computed. [2020-07-20 14:09:09,367 INFO L268 CegarLoopResult]: For program point L220(lines 220 572) no Hoare annotation was computed. [2020-07-20 14:09:09,367 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-20 14:09:09,367 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-07-20 14:09:09,367 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-07-20 14:09:09,367 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-07-20 14:09:09,368 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-07-20 14:09:09,368 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-20 14:09:09,368 INFO L268 CegarLoopResult]: For program point L419(lines 419 572) no Hoare annotation was computed. [2020-07-20 14:09:09,369 INFO L268 CegarLoopResult]: For program point L320(lines 320 572) no Hoare annotation was computed. [2020-07-20 14:09:09,369 INFO L268 CegarLoopResult]: For program point L254(lines 254 572) no Hoare annotation was computed. [2020-07-20 14:09:09,369 INFO L268 CegarLoopResult]: For program point L354(lines 354 572) no Hoare annotation was computed. [2020-07-20 14:09:09,369 INFO L268 CegarLoopResult]: For program point L189-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,369 INFO L268 CegarLoopResult]: For program point L156-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,369 INFO L268 CegarLoopResult]: For program point L123-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,369 INFO L268 CegarLoopResult]: For program point L90-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,369 INFO L268 CegarLoopResult]: For program point L57-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,369 INFO L268 CegarLoopResult]: For program point L24-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,370 INFO L268 CegarLoopResult]: For program point L487(lines 487 572) no Hoare annotation was computed. [2020-07-20 14:09:09,370 INFO L268 CegarLoopResult]: For program point L454(lines 454 572) no Hoare annotation was computed. [2020-07-20 14:09:09,370 INFO L268 CegarLoopResult]: For program point L388(lines 388 572) no Hoare annotation was computed. [2020-07-20 14:09:09,370 INFO L268 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2020-07-20 14:09:09,370 INFO L268 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2020-07-20 14:09:09,370 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-07-20 14:09:09,370 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-07-20 14:09:09,370 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-07-20 14:09:09,371 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-20 14:09:09,371 INFO L268 CegarLoopResult]: For program point L554(lines 554 572) no Hoare annotation was computed. [2020-07-20 14:09:09,371 INFO L268 CegarLoopResult]: For program point L323(lines 323 572) no Hoare annotation was computed. [2020-07-20 14:09:09,371 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 20 574) the Hoare annotation is: (let ((.cse0 (not (<= |old(~a1~0)| 23))) (.cse9 (<= ~a1~0 23)) (.cse6 (<= 2 ~a10~0)) (.cse12 (<= 8 ~a19~0)) (.cse10 (not (<= 8 |old(~a19~0)|))) (.cse7 (not (< |old(~a10~0)| 4))) (.cse3 (not (<= |old(~a19~0)| 9))) (.cse8 (not (<= 2 |old(~a10~0)|))) (.cse4 (<= ~a10~0 |old(~a10~0)|)) (.cse1 (<= 7 ~a19~0)) (.cse5 (<= ~a19~0 |old(~a19~0)|)) (.cse2 (not (<= 7 |old(~a19~0)|))) (.cse11 (not (<= |old(~a10~0)| 1)))) (and (or .cse0 .cse1 .cse2 .cse3) (or (and .cse4 .cse5 .cse6) .cse7 .cse3 .cse8) (or .cse0 .cse9 .cse10 .cse11) (or (and .cse4 .cse9 .cse5) .cse0 (not (<= |old(~a10~0)| 0))) (or (and .cse4 .cse12 .cse5 .cse6) .cse10 .cse3 .cse8) (or .cse0 (and .cse4 .cse9 .cse5 .cse6) .cse3 .cse8) (or .cse12 .cse10 .cse11) (or .cse1 .cse2 .cse7 .cse3 .cse8) (or (and .cse4 .cse1 .cse5) .cse2 .cse11))) [2020-07-20 14:09:09,371 INFO L268 CegarLoopResult]: For program point L357(lines 357 572) no Hoare annotation was computed. [2020-07-20 14:09:09,371 INFO L268 CegarLoopResult]: For program point L291(lines 291 572) no Hoare annotation was computed. [2020-07-20 14:09:09,372 INFO L268 CegarLoopResult]: For program point L225(lines 225 572) no Hoare annotation was computed. [2020-07-20 14:09:09,372 INFO L268 CegarLoopResult]: For program point L192-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,372 INFO L268 CegarLoopResult]: For program point L159-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,372 INFO L268 CegarLoopResult]: For program point L126-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,372 INFO L268 CegarLoopResult]: For program point L93-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,372 INFO L268 CegarLoopResult]: For program point L60-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,372 INFO L268 CegarLoopResult]: For program point L27-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,372 INFO L268 CegarLoopResult]: For program point L523(lines 523 572) no Hoare annotation was computed. [2020-07-20 14:09:09,372 INFO L268 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2020-07-20 14:09:09,373 INFO L268 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-07-20 14:09:09,373 INFO L268 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-07-20 14:09:09,373 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-07-20 14:09:09,373 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-07-20 14:09:09,373 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-07-20 14:09:09,373 INFO L268 CegarLoopResult]: For program point L557(lines 557 572) no Hoare annotation was computed. [2020-07-20 14:09:09,373 INFO L268 CegarLoopResult]: For program point L425(lines 425 572) no Hoare annotation was computed. [2020-07-20 14:09:09,373 INFO L268 CegarLoopResult]: For program point L326(lines 326 572) no Hoare annotation was computed. [2020-07-20 14:09:09,373 INFO L268 CegarLoopResult]: For program point L260(lines 260 572) no Hoare annotation was computed. [2020-07-20 14:09:09,374 INFO L268 CegarLoopResult]: For program point L393(lines 393 572) no Hoare annotation was computed. [2020-07-20 14:09:09,374 INFO L268 CegarLoopResult]: For program point L360(lines 360 572) no Hoare annotation was computed. [2020-07-20 14:09:09,374 INFO L268 CegarLoopResult]: For program point L195-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,374 INFO L268 CegarLoopResult]: For program point L162-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,374 INFO L268 CegarLoopResult]: For program point L129-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,374 INFO L268 CegarLoopResult]: For program point L96-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,374 INFO L268 CegarLoopResult]: For program point L63-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,374 INFO L268 CegarLoopResult]: For program point L30-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,374 INFO L268 CegarLoopResult]: For program point L526(lines 526 572) no Hoare annotation was computed. [2020-07-20 14:09:09,375 INFO L268 CegarLoopResult]: For program point L493(lines 493 572) no Hoare annotation was computed. [2020-07-20 14:09:09,375 INFO L268 CegarLoopResult]: For program point L460(lines 460 572) no Hoare annotation was computed. [2020-07-20 14:09:09,375 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-07-20 14:09:09,375 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-07-20 14:09:09,375 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-07-20 14:09:09,375 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-07-20 14:09:09,375 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-07-20 14:09:09,375 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-20 14:09:09,375 INFO L268 CegarLoopResult]: For program point L329(lines 329 572) no Hoare annotation was computed. [2020-07-20 14:09:09,375 INFO L268 CegarLoopResult]: For program point L296(lines 296 572) no Hoare annotation was computed. [2020-07-20 14:09:09,376 INFO L268 CegarLoopResult]: For program point L231(lines 231 572) no Hoare annotation was computed. [2020-07-20 14:09:09,376 INFO L268 CegarLoopResult]: For program point L198-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,376 INFO L268 CegarLoopResult]: For program point L165-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,376 INFO L268 CegarLoopResult]: For program point L132-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,376 INFO L268 CegarLoopResult]: For program point L99-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,376 INFO L268 CegarLoopResult]: For program point L66-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,376 INFO L268 CegarLoopResult]: For program point L33-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:09:09,376 INFO L268 CegarLoopResult]: For program point L529(lines 529 572) no Hoare annotation was computed. [2020-07-20 14:09:09,376 INFO L268 CegarLoopResult]: For program point L430(lines 430 572) no Hoare annotation was computed. [2020-07-20 14:09:09,377 INFO L268 CegarLoopResult]: For program point L265(lines 265 572) no Hoare annotation was computed. [2020-07-20 14:09:09,377 INFO L268 CegarLoopResult]: For program point L199(line 199) no Hoare annotation was computed. [2020-07-20 14:09:09,377 INFO L268 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2020-07-20 14:09:09,377 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-07-20 14:09:09,377 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-07-20 14:09:09,377 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-07-20 14:09:09,377 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-20 14:09:09,377 INFO L268 CegarLoopResult]: For program point L563(lines 563 572) no Hoare annotation was computed. [2020-07-20 14:09:09,377 INFO L268 CegarLoopResult]: For program point L398(lines 398 572) no Hoare annotation was computed. [2020-07-20 14:09:09,378 INFO L268 CegarLoopResult]: For program point L365(lines 365 572) no Hoare annotation was computed. [2020-07-20 14:09:09,378 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 14:09:09,378 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a10~0 0) (<= ~a19~0 9) (<= 8 ~a19~0) (<= ~a1~0 23)) [2020-07-20 14:09:09,378 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 14:09:09,378 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 14:09:09,378 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 576 592) the Hoare annotation is: (or (and (<= ~a10~0 |old(~a10~0)|) (<= 8 ~a19~0) (<= ~a1~0 23) (<= ~a19~0 |old(~a19~0)|)) (not (<= |old(~a1~0)| 23)) (not (<= |old(~a10~0)| 0)) (not (<= 8 |old(~a19~0)|)) (not (<= |old(~a19~0)| 9))) [2020-07-20 14:09:09,379 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 576 592) no Hoare annotation was computed. [2020-07-20 14:09:09,379 INFO L264 CegarLoopResult]: At program point L590(line 590) the Hoare annotation is: (let ((.cse0 (<= ~a1~0 23)) (.cse1 (<= ~a19~0 9)) (.cse2 (<= 2 ~a10~0))) (or (and (<= ~a10~0 1) (<= 7 ~a19~0)) (not (<= |old(~a1~0)| 23)) (and (<= ~a10~0 0) .cse0) (not (<= |old(~a10~0)| 0)) (not (<= 8 |old(~a19~0)|)) (not (<= |old(~a19~0)| 9)) (and .cse1 .cse0 .cse2) (and .cse1 (<= 8 ~a19~0)) (and .cse1 .cse2 (< ~a10~0 4)))) [2020-07-20 14:09:09,379 INFO L268 CegarLoopResult]: For program point L590-1(line 590) no Hoare annotation was computed. [2020-07-20 14:09:09,379 INFO L268 CegarLoopResult]: For program point L587(line 587) no Hoare annotation was computed. [2020-07-20 14:09:09,379 INFO L264 CegarLoopResult]: At program point L582-2(lines 582 591) the Hoare annotation is: (let ((.cse0 (<= ~a1~0 23)) (.cse1 (<= ~a19~0 9)) (.cse2 (<= 2 ~a10~0))) (or (and (<= ~a10~0 1) (<= 7 ~a19~0)) (not (<= |old(~a1~0)| 23)) (and (<= ~a10~0 0) .cse0) (not (<= |old(~a10~0)| 0)) (not (<= 8 |old(~a19~0)|)) (not (<= |old(~a19~0)| 9)) (and .cse1 .cse0 .cse2) (and .cse1 (<= 8 ~a19~0)) (and .cse1 .cse2 (< ~a10~0 4)))) [2020-07-20 14:09:09,379 INFO L268 CegarLoopResult]: For program point L582-3(lines 576 592) no Hoare annotation was computed. [2020-07-20 14:09:09,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 02:09:09 BoogieIcfgContainer [2020-07-20 14:09:09,407 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 14:09:09,410 INFO L168 Benchmark]: Toolchain (without parser) took 15550.84 ms. Allocated memory was 143.7 MB in the beginning and 406.3 MB in the end (delta: 262.7 MB). Free memory was 99.9 MB in the beginning and 104.5 MB in the end (delta: -4.6 MB). Peak memory consumption was 258.1 MB. Max. memory is 7.1 GB. [2020-07-20 14:09:09,413 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 143.7 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-20 14:09:09,416 INFO L168 Benchmark]: CACSL2BoogieTranslator took 866.17 ms. Allocated memory was 143.7 MB in the beginning and 205.0 MB in the end (delta: 61.3 MB). Free memory was 99.7 MB in the beginning and 171.5 MB in the end (delta: -71.8 MB). Peak memory consumption was 31.8 MB. Max. memory is 7.1 GB. [2020-07-20 14:09:09,416 INFO L168 Benchmark]: Boogie Preprocessor took 99.11 ms. Allocated memory is still 205.0 MB. Free memory was 171.5 MB in the beginning and 167.0 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-07-20 14:09:09,417 INFO L168 Benchmark]: RCFGBuilder took 1445.16 ms. Allocated memory was 205.0 MB in the beginning and 234.4 MB in the end (delta: 29.4 MB). Free memory was 167.0 MB in the beginning and 182.4 MB in the end (delta: -15.4 MB). Peak memory consumption was 87.4 MB. Max. memory is 7.1 GB. [2020-07-20 14:09:09,422 INFO L168 Benchmark]: TraceAbstraction took 13133.49 ms. Allocated memory was 234.4 MB in the beginning and 406.3 MB in the end (delta: 172.0 MB). Free memory was 182.4 MB in the beginning and 104.5 MB in the end (delta: 77.9 MB). Peak memory consumption was 249.9 MB. Max. memory is 7.1 GB. [2020-07-20 14:09:09,429 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 143.7 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 866.17 ms. Allocated memory was 143.7 MB in the beginning and 205.0 MB in the end (delta: 61.3 MB). Free memory was 99.7 MB in the beginning and 171.5 MB in the end (delta: -71.8 MB). Peak memory consumption was 31.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 99.11 ms. Allocated memory is still 205.0 MB. Free memory was 171.5 MB in the beginning and 167.0 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1445.16 ms. Allocated memory was 205.0 MB in the beginning and 234.4 MB in the end (delta: 29.4 MB). Free memory was 167.0 MB in the beginning and 182.4 MB in the end (delta: -15.4 MB). Peak memory consumption was 87.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13133.49 ms. Allocated memory was 234.4 MB in the beginning and 406.3 MB in the end (delta: 172.0 MB). Free memory was 182.4 MB in the beginning and 104.5 MB in the end (delta: 77.9 MB). Peak memory consumption was 249.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 76]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 582]: Loop Invariant Derived loop invariant: ((((((((a10 <= 1 && 7 <= a19) || !(\old(a1) <= 23)) || (a10 <= 0 && a1 <= 23)) || !(\old(a10) <= 0)) || !(8 <= \old(a19))) || !(\old(a19) <= 9)) || ((a19 <= 9 && a1 <= 23) && 2 <= a10)) || (a19 <= 9 && 8 <= a19)) || ((a19 <= 9 && 2 <= a10) && a10 < 4) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.7s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 7.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 376 SDtfs, 2319 SDslu, 193 SDs, 0 SdLazy, 4098 SolverSat, 1005 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1595 GetRequests, 1559 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2646occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 765 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 77 PreInvPairs, 113 NumberOfFragments, 345 HoareAnnotationTreeSize, 77 FomulaSimplifications, 1772 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 7 FomulaSimplificationsInter, 1484 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 1197 NumberOfCodeBlocks, 1197 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 1576 ConstructedInterpolants, 0 QuantifiedInterpolants, 635260 SizeOfPredicates, 11 NumberOfNonLiveVariables, 2406 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 794/802 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...