/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 13:53:04,600 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 13:53:04,603 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 13:53:04,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 13:53:04,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 13:53:04,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 13:53:04,623 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 13:53:04,636 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 13:53:04,638 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 13:53:04,639 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 13:53:04,640 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 13:53:04,642 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 13:53:04,642 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 13:53:04,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 13:53:04,648 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 13:53:04,649 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 13:53:04,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 13:53:04,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 13:53:04,654 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 13:53:04,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 13:53:04,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 13:53:04,665 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 13:53:04,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 13:53:04,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 13:53:04,670 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 13:53:04,684 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 13:53:04,685 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 13:53:04,686 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 13:53:04,687 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 13:53:04,708 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 13:53:04,708 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 13:53:04,710 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 13:53:04,710 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 13:53:04,711 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 13:53:04,711 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 13:53:04,711 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 13:53:04,711 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 13:53:04,711 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 13:53:04,712 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 13:53:04,713 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 13:53:04,713 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 13:53:04,713 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 13:53:04,714 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 13:53:04,714 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 13:53:04,714 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 13:53:04,714 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 13:53:04,714 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 13:53:04,715 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 13:53:04,715 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 13:53:04,715 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 13:53:04,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 13:53:04,715 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 13:53:04,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 13:53:04,716 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 13:53:04,716 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 13:53:04,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:53:04,716 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 13:53:04,717 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 13:53:04,717 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 13:53:04,980 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 13:53:04,997 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 13:53:05,001 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 13:53:05,002 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 13:53:05,004 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 13:53:05,005 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label06.c [2020-07-21 13:53:05,074 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56f741da3/3f9ed6409b69469fb5d659a0925ab00a/FLAGf55634858 [2020-07-21 13:53:05,638 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 13:53:05,638 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label06.c [2020-07-21 13:53:05,655 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56f741da3/3f9ed6409b69469fb5d659a0925ab00a/FLAGf55634858 [2020-07-21 13:53:05,852 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56f741da3/3f9ed6409b69469fb5d659a0925ab00a [2020-07-21 13:53:05,862 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 13:53:05,866 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 13:53:05,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 13:53:05,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 13:53:05,872 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 13:53:05,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:53:05" (1/1) ... [2020-07-21 13:53:05,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@764e75c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:53:05, skipping insertion in model container [2020-07-21 13:53:05,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:53:05" (1/1) ... [2020-07-21 13:53:05,884 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 13:53:05,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 13:53:06,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 13:53:06,332 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 13:53:06,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 13:53:06,595 INFO L208 MainTranslator]: Completed translation [2020-07-21 13:53:06,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:53:06 WrapperNode [2020-07-21 13:53:06,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 13:53:06,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 13:53:06,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 13:53:06,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 13:53:06,608 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:53:06" (1/1) ... [2020-07-21 13:53:06,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:53:06" (1/1) ... [2020-07-21 13:53:06,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:53:06" (1/1) ... [2020-07-21 13:53:06,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:53:06" (1/1) ... [2020-07-21 13:53:06,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:53:06" (1/1) ... [2020-07-21 13:53:06,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:53:06" (1/1) ... [2020-07-21 13:53:06,684 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:53:06" (1/1) ... [2020-07-21 13:53:06,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 13:53:06,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 13:53:06,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 13:53:06,694 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 13:53:06,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:53:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 13:53:06,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 13:53:06,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 13:53:06,762 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 13:53:06,762 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 13:53:06,762 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 13:53:06,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 13:53:06,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 13:53:06,762 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 13:53:06,763 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 13:53:06,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 13:53:06,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 13:53:07,934 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 13:53:07,935 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 13:53:07,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:53:07 BoogieIcfgContainer [2020-07-21 13:53:07,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 13:53:07,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 13:53:07,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 13:53:07,945 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 13:53:07,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:53:05" (1/3) ... [2020-07-21 13:53:07,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e16ae98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:53:07, skipping insertion in model container [2020-07-21 13:53:07,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:53:06" (2/3) ... [2020-07-21 13:53:07,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e16ae98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:53:07, skipping insertion in model container [2020-07-21 13:53:07,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:53:07" (3/3) ... [2020-07-21 13:53:07,949 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label06.c [2020-07-21 13:53:07,959 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 13:53:07,965 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 13:53:07,978 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 13:53:08,003 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 13:53:08,003 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 13:53:08,003 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 13:53:08,004 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 13:53:08,004 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 13:53:08,004 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 13:53:08,004 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 13:53:08,004 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 13:53:08,026 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-07-21 13:53:08,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-21 13:53:08,034 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:53:08,035 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] [2020-07-21 13:53:08,035 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:53:08,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:53:08,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1307500665, now seen corresponding path program 1 times [2020-07-21 13:53:08,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:53:08,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390663461] [2020-07-21 13:53:08,047 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:53:08,143 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:53:08,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:53:08,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 13:53:08,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:53:08,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:53:08,214 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:53:08,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390663461] [2020-07-21 13:53:08,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:53:08,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:53:08,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312092802] [2020-07-21 13:53:08,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:53:08,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:53:08,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:53:08,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:53:08,239 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2020-07-21 13:53:09,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:53:09,185 INFO L93 Difference]: Finished difference Result 586 states and 1004 transitions. [2020-07-21 13:53:09,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:53:09,187 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-07-21 13:53:09,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:53:09,213 INFO L225 Difference]: With dead ends: 586 [2020-07-21 13:53:09,214 INFO L226 Difference]: Without dead ends: 294 [2020-07-21 13:53:09,224 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 [2020-07-21 13:53:09,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-07-21 13:53:09,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2020-07-21 13:53:09,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-07-21 13:53:09,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 426 transitions. [2020-07-21 13:53:09,338 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 426 transitions. Word has length 30 [2020-07-21 13:53:09,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:53:09,339 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 426 transitions. [2020-07-21 13:53:09,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:53:09,339 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 426 transitions. [2020-07-21 13:53:09,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-07-21 13:53:09,346 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:53:09,347 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] [2020-07-21 13:53:09,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:53:09,562 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:53:09,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:53:09,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1592388862, now seen corresponding path program 1 times [2020-07-21 13:53:09,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:53:09,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350214074] [2020-07-21 13:53:09,565 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:53:09,664 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:53:09,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:53:09,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 13:53:09,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:53:09,729 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:53:09,729 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:53:09,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350214074] [2020-07-21 13:53:09,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:53:09,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 13:53:09,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062274728] [2020-07-21 13:53:09,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 13:53:09,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:53:09,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 13:53:09,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 13:53:09,734 INFO L87 Difference]: Start difference. First operand 294 states and 426 transitions. Second operand 5 states. [2020-07-21 13:53:10,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:53:10,744 INFO L93 Difference]: Finished difference Result 890 states and 1316 transitions. [2020-07-21 13:53:10,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 13:53:10,746 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-07-21 13:53:10,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:53:10,750 INFO L225 Difference]: With dead ends: 890 [2020-07-21 13:53:10,750 INFO L226 Difference]: Without dead ends: 602 [2020-07-21 13:53:10,752 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 [2020-07-21 13:53:10,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-07-21 13:53:10,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 590. [2020-07-21 13:53:10,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-07-21 13:53:10,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 775 transitions. [2020-07-21 13:53:10,788 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 775 transitions. Word has length 104 [2020-07-21 13:53:10,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:53:10,788 INFO L479 AbstractCegarLoop]: Abstraction has 590 states and 775 transitions. [2020-07-21 13:53:10,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 13:53:10,789 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 775 transitions. [2020-07-21 13:53:10,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-07-21 13:53:10,791 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:53:10,792 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] [2020-07-21 13:53:11,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:53:11,007 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:53:11,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:53:11,008 INFO L82 PathProgramCache]: Analyzing trace with hash -2136138939, now seen corresponding path program 1 times [2020-07-21 13:53:11,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:53:11,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536878620] [2020-07-21 13:53:11,009 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:53:11,090 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:53:11,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:53:11,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 13:53:11,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:53:11,151 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:53:11,151 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:53:11,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536878620] [2020-07-21 13:53:11,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:53:11,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:53:11,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50727803] [2020-07-21 13:53:11,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:53:11,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:53:11,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:53:11,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:53:11,154 INFO L87 Difference]: Start difference. First operand 590 states and 775 transitions. Second operand 3 states. [2020-07-21 13:53:11,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:53:11,839 INFO L93 Difference]: Finished difference Result 1025 states and 1394 transitions. [2020-07-21 13:53:11,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:53:11,840 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 109 [2020-07-21 13:53:11,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:53:11,856 INFO L225 Difference]: With dead ends: 1025 [2020-07-21 13:53:11,856 INFO L226 Difference]: Without dead ends: 1023 [2020-07-21 13:53:11,857 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 [2020-07-21 13:53:11,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2020-07-21 13:53:11,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 1023. [2020-07-21 13:53:11,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2020-07-21 13:53:11,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1392 transitions. [2020-07-21 13:53:11,918 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1392 transitions. Word has length 109 [2020-07-21 13:53:11,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:53:11,919 INFO L479 AbstractCegarLoop]: Abstraction has 1023 states and 1392 transitions. [2020-07-21 13:53:11,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:53:11,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1392 transitions. [2020-07-21 13:53:11,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-07-21 13:53:11,924 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:53:11,924 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] [2020-07-21 13:53:12,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:53:12,138 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:53:12,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:53:12,139 INFO L82 PathProgramCache]: Analyzing trace with hash -831400030, now seen corresponding path program 1 times [2020-07-21 13:53:12,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:53:12,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700427829] [2020-07-21 13:53:12,141 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:53:12,233 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:53:12,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:53:12,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 13:53:12,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:53:12,345 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:53:12,345 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:53:12,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700427829] [2020-07-21 13:53:12,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:53:12,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 13:53:12,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632401213] [2020-07-21 13:53:12,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 13:53:12,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:53:12,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 13:53:12,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 13:53:12,349 INFO L87 Difference]: Start difference. First operand 1023 states and 1392 transitions. Second operand 5 states. [2020-07-21 13:53:13,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:53:13,297 INFO L93 Difference]: Finished difference Result 2650 states and 3703 transitions. [2020-07-21 13:53:13,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 13:53:13,297 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-07-21 13:53:13,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:53:13,307 INFO L225 Difference]: With dead ends: 2650 [2020-07-21 13:53:13,308 INFO L226 Difference]: Without dead ends: 1633 [2020-07-21 13:53:13,311 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 [2020-07-21 13:53:13,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2020-07-21 13:53:13,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1470. [2020-07-21 13:53:13,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1470 states. [2020-07-21 13:53:13,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 1920 transitions. [2020-07-21 13:53:13,370 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 1920 transitions. Word has length 152 [2020-07-21 13:53:13,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:53:13,371 INFO L479 AbstractCegarLoop]: Abstraction has 1470 states and 1920 transitions. [2020-07-21 13:53:13,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 13:53:13,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 1920 transitions. [2020-07-21 13:53:13,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-07-21 13:53:13,375 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:53:13,375 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] [2020-07-21 13:53:13,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:53:13,590 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:53:13,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:53:13,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1765771600, now seen corresponding path program 1 times [2020-07-21 13:53:13,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:53:13,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130052255] [2020-07-21 13:53:13,591 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:53:13,717 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:53:13,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:53:13,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 13:53:13,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:53:13,783 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:53:13,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 13:53:13,896 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:53:13,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130052255] [2020-07-21 13:53:13,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 13:53:13,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 13:53:13,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59895877] [2020-07-21 13:53:13,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 13:53:13,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:53:13,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 13:53:13,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 13:53:13,899 INFO L87 Difference]: Start difference. First operand 1470 states and 1920 transitions. Second operand 7 states. [2020-07-21 13:53:15,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:53:15,186 INFO L93 Difference]: Finished difference Result 3816 states and 5119 transitions. [2020-07-21 13:53:15,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 13:53:15,189 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 191 [2020-07-21 13:53:15,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:53:15,205 INFO L225 Difference]: With dead ends: 3816 [2020-07-21 13:53:15,206 INFO L226 Difference]: Without dead ends: 2352 [2020-07-21 13:53:15,213 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 [2020-07-21 13:53:15,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2020-07-21 13:53:15,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 2201. [2020-07-21 13:53:15,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2201 states. [2020-07-21 13:53:15,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2201 states to 2201 states and 2782 transitions. [2020-07-21 13:53:15,301 INFO L78 Accepts]: Start accepts. Automaton has 2201 states and 2782 transitions. Word has length 191 [2020-07-21 13:53:15,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:53:15,301 INFO L479 AbstractCegarLoop]: Abstraction has 2201 states and 2782 transitions. [2020-07-21 13:53:15,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 13:53:15,302 INFO L276 IsEmpty]: Start isEmpty. Operand 2201 states and 2782 transitions. [2020-07-21 13:53:15,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-07-21 13:53:15,310 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:53:15,310 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] [2020-07-21 13:53:15,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:53:15,523 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:53:15,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:53:15,524 INFO L82 PathProgramCache]: Analyzing trace with hash -439866795, now seen corresponding path program 1 times [2020-07-21 13:53:15,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:53:15,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1488775275] [2020-07-21 13:53:15,525 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:53:15,642 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:53:15,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:53:15,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 13:53:15,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:53:15,750 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 114 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:53:15,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 13:53:15,870 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 114 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:53:15,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1488775275] [2020-07-21 13:53:15,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 13:53:15,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 13:53:15,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734562221] [2020-07-21 13:53:15,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 13:53:15,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:53:15,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 13:53:15,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 13:53:15,882 INFO L87 Difference]: Start difference. First operand 2201 states and 2782 transitions. Second operand 6 states. [2020-07-21 13:53:16,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:53:16,902 INFO L93 Difference]: Finished difference Result 4849 states and 6224 transitions. [2020-07-21 13:53:16,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 13:53:16,903 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 198 [2020-07-21 13:53:16,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:53:16,917 INFO L225 Difference]: With dead ends: 4849 [2020-07-21 13:53:16,917 INFO L226 Difference]: Without dead ends: 2654 [2020-07-21 13:53:16,925 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 [2020-07-21 13:53:16,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2654 states. [2020-07-21 13:53:16,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2654 to 2646. [2020-07-21 13:53:16,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2646 states. [2020-07-21 13:53:16,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2646 states to 2646 states and 3363 transitions. [2020-07-21 13:53:16,998 INFO L78 Accepts]: Start accepts. Automaton has 2646 states and 3363 transitions. Word has length 198 [2020-07-21 13:53:16,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:53:16,999 INFO L479 AbstractCegarLoop]: Abstraction has 2646 states and 3363 transitions. [2020-07-21 13:53:16,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 13:53:16,999 INFO L276 IsEmpty]: Start isEmpty. Operand 2646 states and 3363 transitions. [2020-07-21 13:53:17,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-07-21 13:53:17,004 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:53:17,004 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] [2020-07-21 13:53:17,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:53:17,217 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:53:17,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:53:17,218 INFO L82 PathProgramCache]: Analyzing trace with hash -674244364, now seen corresponding path program 1 times [2020-07-21 13:53:17,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:53:17,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [328337801] [2020-07-21 13:53:17,220 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:53:17,314 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:53:17,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:53:17,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 13:53:17,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:53:17,353 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-07-21 13:53:17,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:53:17,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [328337801] [2020-07-21 13:53:17,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:53:17,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:53:17,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347460394] [2020-07-21 13:53:17,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:53:17,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:53:17,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:53:17,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:53:17,357 INFO L87 Difference]: Start difference. First operand 2646 states and 3363 transitions. Second operand 3 states. [2020-07-21 13:53:17,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:53:17,925 INFO L93 Difference]: Finished difference Result 5286 states and 6729 transitions. [2020-07-21 13:53:17,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:53:17,926 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 205 [2020-07-21 13:53:17,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:53:17,937 INFO L225 Difference]: With dead ends: 5286 [2020-07-21 13:53:17,937 INFO L226 Difference]: Without dead ends: 2646 [2020-07-21 13:53:17,942 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 [2020-07-21 13:53:17,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2646 states. [2020-07-21 13:53:17,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2646 to 2215. [2020-07-21 13:53:17,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2215 states. [2020-07-21 13:53:18,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2215 states to 2215 states and 2632 transitions. [2020-07-21 13:53:18,001 INFO L78 Accepts]: Start accepts. Automaton has 2215 states and 2632 transitions. Word has length 205 [2020-07-21 13:53:18,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:53:18,002 INFO L479 AbstractCegarLoop]: Abstraction has 2215 states and 2632 transitions. [2020-07-21 13:53:18,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:53:18,002 INFO L276 IsEmpty]: Start isEmpty. Operand 2215 states and 2632 transitions. [2020-07-21 13:53:18,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-07-21 13:53:18,037 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:53:18,038 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] [2020-07-21 13:53:18,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:53:18,245 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:53:18,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:53:18,246 INFO L82 PathProgramCache]: Analyzing trace with hash 29112225, now seen corresponding path program 1 times [2020-07-21 13:53:18,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:53:18,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214562964] [2020-07-21 13:53:18,247 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:53:18,393 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:53:18,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:53:18,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 13:53:18,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:53:18,446 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-07-21 13:53:18,446 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:53:18,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214562964] [2020-07-21 13:53:18,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:53:18,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:53:18,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398065426] [2020-07-21 13:53:18,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:53:18,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:53:18,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:53:18,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:53:18,449 INFO L87 Difference]: Start difference. First operand 2215 states and 2632 transitions. Second operand 3 states. [2020-07-21 13:53:19,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:53:19,011 INFO L93 Difference]: Finished difference Result 2646 states and 3150 transitions. [2020-07-21 13:53:19,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:53:19,012 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 208 [2020-07-21 13:53:19,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:53:19,013 INFO L225 Difference]: With dead ends: 2646 [2020-07-21 13:53:19,013 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 13:53:19,018 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 [2020-07-21 13:53:19,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 13:53:19,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 13:53:19,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 13:53:19,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 13:53:19,019 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 208 [2020-07-21 13:53:19,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:53:19,019 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 13:53:19,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:53:19,019 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 13:53:19,019 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 13:53:19,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:53:19,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 13:53:20,168 WARN L193 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 54 [2020-07-21 13:53:20,341 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 36 [2020-07-21 13:53:20,504 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 36 [2020-07-21 13:53:20,507 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 13:53:20,507 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a10~0 |old(~a10~0)|) (<= ~a19~0 |old(~a19~0)|)) [2020-07-21 13:53:20,508 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 13:53:20,508 INFO L268 CegarLoopResult]: For program point L465(lines 465 572) no Hoare annotation was computed. [2020-07-21 13:53:20,508 INFO L268 CegarLoopResult]: For program point L201-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,508 INFO L268 CegarLoopResult]: For program point L168-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,508 INFO L268 CegarLoopResult]: For program point L135-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,508 INFO L268 CegarLoopResult]: For program point L102-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,508 INFO L268 CegarLoopResult]: For program point L69-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,508 INFO L268 CegarLoopResult]: For program point L36-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,508 INFO L268 CegarLoopResult]: For program point L499(lines 499 572) no Hoare annotation was computed. [2020-07-21 13:53:20,509 INFO L268 CegarLoopResult]: For program point L301(lines 301 572) no Hoare annotation was computed. [2020-07-21 13:53:20,509 INFO L268 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2020-07-21 13:53:20,509 INFO L268 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2020-07-21 13:53:20,509 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-07-21 13:53:20,509 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-07-21 13:53:20,509 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-07-21 13:53:20,509 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-07-21 13:53:20,509 INFO L268 CegarLoopResult]: For program point L335(lines 335 572) no Hoare annotation was computed. [2020-07-21 13:53:20,509 INFO L268 CegarLoopResult]: For program point L236(lines 236 572) no Hoare annotation was computed. [2020-07-21 13:53:20,510 INFO L268 CegarLoopResult]: For program point L534(lines 534 572) no Hoare annotation was computed. [2020-07-21 13:53:20,510 INFO L268 CegarLoopResult]: For program point L171-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,510 INFO L268 CegarLoopResult]: For program point L138-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,510 INFO L268 CegarLoopResult]: For program point L105-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,510 INFO L268 CegarLoopResult]: For program point L72-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,510 INFO L268 CegarLoopResult]: For program point L39-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,510 INFO L268 CegarLoopResult]: For program point L436(lines 436 572) no Hoare annotation was computed. [2020-07-21 13:53:20,510 INFO L268 CegarLoopResult]: For program point L403(lines 403 572) no Hoare annotation was computed. [2020-07-21 13:53:20,511 INFO L268 CegarLoopResult]: For program point L370(lines 370 572) no Hoare annotation was computed. [2020-07-21 13:53:20,511 INFO L268 CegarLoopResult]: For program point L271(lines 271 572) no Hoare annotation was computed. [2020-07-21 13:53:20,511 INFO L268 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2020-07-21 13:53:20,511 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-07-21 13:53:20,511 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-07-21 13:53:20,511 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-07-21 13:53:20,511 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-07-21 13:53:20,511 INFO L268 CegarLoopResult]: For program point L569(lines 569 572) no Hoare annotation was computed. [2020-07-21 13:53:20,511 INFO L268 CegarLoopResult]: For program point L239(lines 239 572) no Hoare annotation was computed. [2020-07-21 13:53:20,512 INFO L268 CegarLoopResult]: For program point L504(lines 504 572) no Hoare annotation was computed. [2020-07-21 13:53:20,512 INFO L268 CegarLoopResult]: For program point L471(lines 471 572) no Hoare annotation was computed. [2020-07-21 13:53:20,512 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 76) no Hoare annotation was computed. [2020-07-21 13:53:20,512 INFO L268 CegarLoopResult]: For program point L306(lines 306 572) no Hoare annotation was computed. [2020-07-21 13:53:20,512 INFO L268 CegarLoopResult]: For program point L174-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,512 INFO L268 CegarLoopResult]: For program point L141-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,512 INFO L268 CegarLoopResult]: For program point L108-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,512 INFO L268 CegarLoopResult]: For program point L75-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,513 INFO L268 CegarLoopResult]: For program point L42-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,513 INFO L268 CegarLoopResult]: For program point L340(lines 340 572) no Hoare annotation was computed. [2020-07-21 13:53:20,513 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-21 13:53:20,513 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-07-21 13:53:20,513 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-07-21 13:53:20,513 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-07-21 13:53:20,513 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-07-21 13:53:20,513 INFO L268 CegarLoopResult]: For program point L540(lines 540 572) no Hoare annotation was computed. [2020-07-21 13:53:20,514 INFO L268 CegarLoopResult]: For program point L408(lines 408 572) no Hoare annotation was computed. [2020-07-21 13:53:20,514 INFO L268 CegarLoopResult]: For program point L375(lines 375 572) no Hoare annotation was computed. [2020-07-21 13:53:20,514 INFO L268 CegarLoopResult]: For program point L210(lines 210 572) no Hoare annotation was computed. [2020-07-21 13:53:20,514 INFO L268 CegarLoopResult]: For program point L177-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,514 INFO L268 CegarLoopResult]: For program point L144-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,514 INFO L268 CegarLoopResult]: For program point L111-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,514 INFO L268 CegarLoopResult]: For program point L78-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,514 INFO L268 CegarLoopResult]: For program point L45-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,514 INFO L268 CegarLoopResult]: For program point L442(lines 442 572) no Hoare annotation was computed. [2020-07-21 13:53:20,515 INFO L268 CegarLoopResult]: For program point L277(lines 277 572) no Hoare annotation was computed. [2020-07-21 13:53:20,515 INFO L268 CegarLoopResult]: For program point L244(lines 244 572) no Hoare annotation was computed. [2020-07-21 13:53:20,515 INFO L268 CegarLoopResult]: For program point L178(line 178) no Hoare annotation was computed. [2020-07-21 13:53:20,515 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-07-21 13:53:20,515 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-07-21 13:53:20,515 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-07-21 13:53:20,515 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-21 13:53:20,515 INFO L268 CegarLoopResult]: For program point L509(lines 509 572) no Hoare annotation was computed. [2020-07-21 13:53:20,515 INFO L268 CegarLoopResult]: For program point L476(lines 476 572) no Hoare annotation was computed. [2020-07-21 13:53:20,516 INFO L268 CegarLoopResult]: For program point L378(lines 378 572) no Hoare annotation was computed. [2020-07-21 13:53:20,516 INFO L268 CegarLoopResult]: For program point L345(lines 345 572) no Hoare annotation was computed. [2020-07-21 13:53:20,516 INFO L268 CegarLoopResult]: For program point L312(lines 312 572) no Hoare annotation was computed. [2020-07-21 13:53:20,516 INFO L268 CegarLoopResult]: For program point L180-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,516 INFO L268 CegarLoopResult]: For program point L147-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,516 INFO L268 CegarLoopResult]: For program point L114-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,516 INFO L268 CegarLoopResult]: For program point L81-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,516 INFO L268 CegarLoopResult]: For program point L48-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,517 INFO L268 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2020-07-21 13:53:20,517 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-07-21 13:53:20,517 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-21 13:53:20,517 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-07-21 13:53:20,517 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-07-21 13:53:20,517 INFO L268 CegarLoopResult]: For program point L545(lines 545 572) no Hoare annotation was computed. [2020-07-21 13:53:20,517 INFO L268 CegarLoopResult]: For program point L215(lines 215 572) no Hoare annotation was computed. [2020-07-21 13:53:20,517 INFO L268 CegarLoopResult]: For program point L414(lines 414 572) no Hoare annotation was computed. [2020-07-21 13:53:20,517 INFO L268 CegarLoopResult]: For program point L249(lines 249 572) no Hoare annotation was computed. [2020-07-21 13:53:20,518 INFO L268 CegarLoopResult]: For program point L183-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,518 INFO L268 CegarLoopResult]: For program point L150-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,518 INFO L268 CegarLoopResult]: For program point L117-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,518 INFO L268 CegarLoopResult]: For program point L84-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,518 INFO L268 CegarLoopResult]: For program point L51-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,518 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,518 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,518 INFO L268 CegarLoopResult]: For program point L514(lines 514 572) no Hoare annotation was computed. [2020-07-21 13:53:20,518 INFO L268 CegarLoopResult]: For program point L481(lines 481 572) no Hoare annotation was computed. [2020-07-21 13:53:20,518 INFO L268 CegarLoopResult]: For program point L448(lines 448 572) no Hoare annotation was computed. [2020-07-21 13:53:20,519 INFO L268 CegarLoopResult]: For program point L283(lines 283 572) no Hoare annotation was computed. [2020-07-21 13:53:20,519 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-07-21 13:53:20,519 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-07-21 13:53:20,519 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-07-21 13:53:20,519 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-07-21 13:53:20,519 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-07-21 13:53:20,519 INFO L268 CegarLoopResult]: For program point L548(lines 548 572) no Hoare annotation was computed. [2020-07-21 13:53:20,519 INFO L268 CegarLoopResult]: For program point L383(lines 383 572) no Hoare annotation was computed. [2020-07-21 13:53:20,519 INFO L268 CegarLoopResult]: For program point L317(lines 317 572) no Hoare annotation was computed. [2020-07-21 13:53:20,520 INFO L268 CegarLoopResult]: For program point L351(lines 351 572) no Hoare annotation was computed. [2020-07-21 13:53:20,520 INFO L268 CegarLoopResult]: For program point L186-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,520 INFO L268 CegarLoopResult]: For program point L153-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,520 INFO L268 CegarLoopResult]: For program point L120-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,520 INFO L268 CegarLoopResult]: For program point L87-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,520 INFO L268 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-07-21 13:53:20,520 INFO L268 CegarLoopResult]: For program point L54-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,520 INFO L268 CegarLoopResult]: For program point L21-2(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,521 INFO L268 CegarLoopResult]: For program point L517(lines 517 572) no Hoare annotation was computed. [2020-07-21 13:53:20,521 INFO L268 CegarLoopResult]: For program point L286(lines 286 572) no Hoare annotation was computed. [2020-07-21 13:53:20,521 INFO L268 CegarLoopResult]: For program point L220(lines 220 572) no Hoare annotation was computed. [2020-07-21 13:53:20,521 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-21 13:53:20,521 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-07-21 13:53:20,521 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-07-21 13:53:20,521 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-07-21 13:53:20,521 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-07-21 13:53:20,521 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-21 13:53:20,522 INFO L268 CegarLoopResult]: For program point L419(lines 419 572) no Hoare annotation was computed. [2020-07-21 13:53:20,522 INFO L268 CegarLoopResult]: For program point L320(lines 320 572) no Hoare annotation was computed. [2020-07-21 13:53:20,522 INFO L268 CegarLoopResult]: For program point L254(lines 254 572) no Hoare annotation was computed. [2020-07-21 13:53:20,522 INFO L268 CegarLoopResult]: For program point L354(lines 354 572) no Hoare annotation was computed. [2020-07-21 13:53:20,522 INFO L268 CegarLoopResult]: For program point L189-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,522 INFO L268 CegarLoopResult]: For program point L156-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,522 INFO L268 CegarLoopResult]: For program point L123-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,522 INFO L268 CegarLoopResult]: For program point L90-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,522 INFO L268 CegarLoopResult]: For program point L57-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,523 INFO L268 CegarLoopResult]: For program point L24-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,523 INFO L268 CegarLoopResult]: For program point L487(lines 487 572) no Hoare annotation was computed. [2020-07-21 13:53:20,523 INFO L268 CegarLoopResult]: For program point L454(lines 454 572) no Hoare annotation was computed. [2020-07-21 13:53:20,523 INFO L268 CegarLoopResult]: For program point L388(lines 388 572) no Hoare annotation was computed. [2020-07-21 13:53:20,523 INFO L268 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2020-07-21 13:53:20,523 INFO L268 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2020-07-21 13:53:20,523 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-07-21 13:53:20,523 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-07-21 13:53:20,523 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-07-21 13:53:20,524 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-21 13:53:20,524 INFO L268 CegarLoopResult]: For program point L554(lines 554 572) no Hoare annotation was computed. [2020-07-21 13:53:20,524 INFO L268 CegarLoopResult]: For program point L323(lines 323 572) no Hoare annotation was computed. [2020-07-21 13:53:20,524 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))) [2020-07-21 13:53:20,524 INFO L268 CegarLoopResult]: For program point L357(lines 357 572) no Hoare annotation was computed. [2020-07-21 13:53:20,524 INFO L268 CegarLoopResult]: For program point L291(lines 291 572) no Hoare annotation was computed. [2020-07-21 13:53:20,524 INFO L268 CegarLoopResult]: For program point L225(lines 225 572) no Hoare annotation was computed. [2020-07-21 13:53:20,524 INFO L268 CegarLoopResult]: For program point L192-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,525 INFO L268 CegarLoopResult]: For program point L159-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,525 INFO L268 CegarLoopResult]: For program point L126-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,525 INFO L268 CegarLoopResult]: For program point L93-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,525 INFO L268 CegarLoopResult]: For program point L60-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,525 INFO L268 CegarLoopResult]: For program point L27-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,525 INFO L268 CegarLoopResult]: For program point L523(lines 523 572) no Hoare annotation was computed. [2020-07-21 13:53:20,525 INFO L268 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2020-07-21 13:53:20,525 INFO L268 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-07-21 13:53:20,526 INFO L268 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-07-21 13:53:20,526 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-07-21 13:53:20,526 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-07-21 13:53:20,526 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-07-21 13:53:20,526 INFO L268 CegarLoopResult]: For program point L557(lines 557 572) no Hoare annotation was computed. [2020-07-21 13:53:20,526 INFO L268 CegarLoopResult]: For program point L425(lines 425 572) no Hoare annotation was computed. [2020-07-21 13:53:20,526 INFO L268 CegarLoopResult]: For program point L326(lines 326 572) no Hoare annotation was computed. [2020-07-21 13:53:20,526 INFO L268 CegarLoopResult]: For program point L260(lines 260 572) no Hoare annotation was computed. [2020-07-21 13:53:20,526 INFO L268 CegarLoopResult]: For program point L393(lines 393 572) no Hoare annotation was computed. [2020-07-21 13:53:20,527 INFO L268 CegarLoopResult]: For program point L360(lines 360 572) no Hoare annotation was computed. [2020-07-21 13:53:20,527 INFO L268 CegarLoopResult]: For program point L195-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,527 INFO L268 CegarLoopResult]: For program point L162-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,527 INFO L268 CegarLoopResult]: For program point L129-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,527 INFO L268 CegarLoopResult]: For program point L96-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,527 INFO L268 CegarLoopResult]: For program point L63-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,527 INFO L268 CegarLoopResult]: For program point L30-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,527 INFO L268 CegarLoopResult]: For program point L526(lines 526 572) no Hoare annotation was computed. [2020-07-21 13:53:20,528 INFO L268 CegarLoopResult]: For program point L493(lines 493 572) no Hoare annotation was computed. [2020-07-21 13:53:20,528 INFO L268 CegarLoopResult]: For program point L460(lines 460 572) no Hoare annotation was computed. [2020-07-21 13:53:20,528 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-07-21 13:53:20,528 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-07-21 13:53:20,528 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-07-21 13:53:20,528 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-07-21 13:53:20,528 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-07-21 13:53:20,528 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-21 13:53:20,529 INFO L268 CegarLoopResult]: For program point L329(lines 329 572) no Hoare annotation was computed. [2020-07-21 13:53:20,529 INFO L268 CegarLoopResult]: For program point L296(lines 296 572) no Hoare annotation was computed. [2020-07-21 13:53:20,529 INFO L268 CegarLoopResult]: For program point L231(lines 231 572) no Hoare annotation was computed. [2020-07-21 13:53:20,529 INFO L268 CegarLoopResult]: For program point L198-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,529 INFO L268 CegarLoopResult]: For program point L165-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,529 INFO L268 CegarLoopResult]: For program point L132-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,529 INFO L268 CegarLoopResult]: For program point L99-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,529 INFO L268 CegarLoopResult]: For program point L66-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,530 INFO L268 CegarLoopResult]: For program point L33-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:53:20,530 INFO L268 CegarLoopResult]: For program point L529(lines 529 572) no Hoare annotation was computed. [2020-07-21 13:53:20,530 INFO L268 CegarLoopResult]: For program point L430(lines 430 572) no Hoare annotation was computed. [2020-07-21 13:53:20,530 INFO L268 CegarLoopResult]: For program point L265(lines 265 572) no Hoare annotation was computed. [2020-07-21 13:53:20,530 INFO L268 CegarLoopResult]: For program point L199(line 199) no Hoare annotation was computed. [2020-07-21 13:53:20,530 INFO L268 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2020-07-21 13:53:20,530 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-07-21 13:53:20,530 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-07-21 13:53:20,530 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-07-21 13:53:20,530 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-21 13:53:20,531 INFO L268 CegarLoopResult]: For program point L563(lines 563 572) no Hoare annotation was computed. [2020-07-21 13:53:20,531 INFO L268 CegarLoopResult]: For program point L398(lines 398 572) no Hoare annotation was computed. [2020-07-21 13:53:20,531 INFO L268 CegarLoopResult]: For program point L365(lines 365 572) no Hoare annotation was computed. [2020-07-21 13:53:20,531 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 13:53:20,531 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)) [2020-07-21 13:53:20,531 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 13:53:20,531 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 13:53:20,531 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))) [2020-07-21 13:53:20,532 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 576 592) no Hoare annotation was computed. [2020-07-21 13:53:20,532 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)))) [2020-07-21 13:53:20,532 INFO L268 CegarLoopResult]: For program point L590-1(line 590) no Hoare annotation was computed. [2020-07-21 13:53:20,532 INFO L268 CegarLoopResult]: For program point L587(line 587) no Hoare annotation was computed. [2020-07-21 13:53:20,532 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)))) [2020-07-21 13:53:20,532 INFO L268 CegarLoopResult]: For program point L582-3(lines 576 592) no Hoare annotation was computed. [2020-07-21 13:53:20,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:53:20 BoogieIcfgContainer [2020-07-21 13:53:20,551 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 13:53:20,553 INFO L168 Benchmark]: Toolchain (without parser) took 14688.91 ms. Allocated memory was 138.9 MB in the beginning and 412.6 MB in the end (delta: 273.7 MB). Free memory was 102.9 MB in the beginning and 294.5 MB in the end (delta: -191.6 MB). Peak memory consumption was 286.5 MB. Max. memory is 7.1 GB. [2020-07-21 13:53:20,553 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 138.9 MB. Free memory is still 121.6 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 13:53:20,554 INFO L168 Benchmark]: CACSL2BoogieTranslator took 728.10 ms. Allocated memory was 138.9 MB in the beginning and 208.7 MB in the end (delta: 69.7 MB). Free memory was 102.4 MB in the beginning and 180.6 MB in the end (delta: -78.2 MB). Peak memory consumption was 44.4 MB. Max. memory is 7.1 GB. [2020-07-21 13:53:20,555 INFO L168 Benchmark]: Boogie Preprocessor took 96.71 ms. Allocated memory is still 208.7 MB. Free memory was 180.6 MB in the beginning and 175.3 MB in the end (delta: 5.3 MB). Peak memory consumption was 5.3 MB. Max. memory is 7.1 GB. [2020-07-21 13:53:20,556 INFO L168 Benchmark]: RCFGBuilder took 1247.31 ms. Allocated memory was 208.7 MB in the beginning and 241.7 MB in the end (delta: 33.0 MB). Free memory was 175.3 MB in the beginning and 190.9 MB in the end (delta: -15.6 MB). Peak memory consumption was 87.9 MB. Max. memory is 7.1 GB. [2020-07-21 13:53:20,557 INFO L168 Benchmark]: TraceAbstraction took 12609.05 ms. Allocated memory was 241.7 MB in the beginning and 412.6 MB in the end (delta: 170.9 MB). Free memory was 190.9 MB in the beginning and 294.5 MB in the end (delta: -103.5 MB). Peak memory consumption was 271.8 MB. Max. memory is 7.1 GB. [2020-07-21 13:53:20,560 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 138.9 MB. Free memory is still 121.6 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 728.10 ms. Allocated memory was 138.9 MB in the beginning and 208.7 MB in the end (delta: 69.7 MB). Free memory was 102.4 MB in the beginning and 180.6 MB in the end (delta: -78.2 MB). Peak memory consumption was 44.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 96.71 ms. Allocated memory is still 208.7 MB. Free memory was 180.6 MB in the beginning and 175.3 MB in the end (delta: 5.3 MB). Peak memory consumption was 5.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1247.31 ms. Allocated memory was 208.7 MB in the beginning and 241.7 MB in the end (delta: 33.0 MB). Free memory was 175.3 MB in the beginning and 190.9 MB in the end (delta: -15.6 MB). Peak memory consumption was 87.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12609.05 ms. Allocated memory was 241.7 MB in the beginning and 412.6 MB in the end (delta: 170.9 MB). Free memory was 190.9 MB in the beginning and 294.5 MB in the end (delta: -103.5 MB). Peak memory consumption was 271.8 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: 11.2s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 7.2s, 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, 5.0s 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, 0.2s HoareSimplificationTime, 7 FomulaSimplificationsInter, 1484 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 1197 NumberOfCodeBlocks, 1197 NumberOfCodeBlocksAsserted, 16 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...