/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 14:05:32,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 14:05:32,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 14:05:32,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 14:05:32,585 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 14:05:32,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 14:05:32,589 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 14:05:32,603 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 14:05:32,605 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 14:05:32,606 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 14:05:32,607 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 14:05:32,609 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 14:05:32,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 14:05:32,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 14:05:32,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 14:05:32,618 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 14:05:32,620 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 14:05:32,621 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 14:05:32,623 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 14:05:32,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 14:05:32,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 14:05:32,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 14:05:32,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 14:05:32,639 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 14:05:32,642 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 14:05:32,660 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 14:05:32,682 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 14:05:32,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 14:05:32,685 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 14:05:32,686 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 14:05:32,686 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 14:05:32,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 14:05:32,686 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 14:05:32,687 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 14:05:32,687 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 14:05:32,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 14:05:32,688 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 14:05:32,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 14:05:32,689 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 14:05:32,689 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 14:05:32,689 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 14:05:32,689 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 14:05:32,690 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 14:05:32,690 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 14:05:32,690 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 14:05:32,690 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 14:05:32,691 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 14:05:32,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 14:05:32,691 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 14:05:32,691 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 14:05:32,692 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 14:05:32,692 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 14:05:32,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:05:32,692 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 14:05:32,692 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 14:05:32,692 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 14:05:32,962 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 14:05:32,980 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 14:05:32,985 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 14:05:32,987 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 14:05:32,990 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 14:05:32,990 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label41.c [2020-07-20 14:05:33,068 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b507d78a/2d0a34e61a97446ea1342abf8a707fdb/FLAG73e3e1380 [2020-07-20 14:05:33,760 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 14:05:33,764 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label41.c [2020-07-20 14:05:33,781 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b507d78a/2d0a34e61a97446ea1342abf8a707fdb/FLAG73e3e1380 [2020-07-20 14:05:33,934 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b507d78a/2d0a34e61a97446ea1342abf8a707fdb [2020-07-20 14:05:33,944 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 14:05:33,946 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 14:05:33,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 14:05:33,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 14:05:33,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 14:05:33,952 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:05:33" (1/1) ... [2020-07-20 14:05:33,955 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b8c3854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:05:33, skipping insertion in model container [2020-07-20 14:05:33,955 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:05:33" (1/1) ... [2020-07-20 14:05:33,963 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 14:05:34,012 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 14:05:34,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:05:34,493 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 14:05:34,703 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:05:34,721 INFO L208 MainTranslator]: Completed translation [2020-07-20 14:05:34,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:05:34 WrapperNode [2020-07-20 14:05:34,722 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 14:05:34,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 14:05:34,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 14:05:34,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 14:05:34,734 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:05:34" (1/1) ... [2020-07-20 14:05:34,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:05:34" (1/1) ... [2020-07-20 14:05:34,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:05:34" (1/1) ... [2020-07-20 14:05:34,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:05:34" (1/1) ... [2020-07-20 14:05:34,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:05:34" (1/1) ... [2020-07-20 14:05:34,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:05:34" (1/1) ... [2020-07-20 14:05:34,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:05:34" (1/1) ... [2020-07-20 14:05:34,847 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 14:05:34,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 14:05:34,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 14:05:34,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 14:05:34,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:05:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 14:05:34,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 14:05:34,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 14:05:34,924 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-20 14:05:34,924 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 14:05:34,924 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-20 14:05:34,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 14:05:34,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 14:05:34,925 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 14:05:34,925 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 14:05:34,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 14:05:34,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 14:05:36,188 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 14:05:36,189 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 14:05:36,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:05:36 BoogieIcfgContainer [2020-07-20 14:05:36,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 14:05:36,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 14:05:36,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 14:05:36,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 14:05:36,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 02:05:33" (1/3) ... [2020-07-20 14:05:36,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@175e5694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:05:36, skipping insertion in model container [2020-07-20 14:05:36,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:05:34" (2/3) ... [2020-07-20 14:05:36,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@175e5694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:05:36, skipping insertion in model container [2020-07-20 14:05:36,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:05:36" (3/3) ... [2020-07-20 14:05:36,211 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label41.c [2020-07-20 14:05:36,223 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 14:05:36,234 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 14:05:36,252 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 14:05:36,287 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 14:05:36,288 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 14:05:36,288 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 14:05:36,288 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 14:05:36,288 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 14:05:36,288 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 14:05:36,289 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 14:05:36,289 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 14:05:36,311 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-07-20 14:05:36,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-07-20 14:05:36,322 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:05:36,324 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:05:36,324 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:05:36,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:05:36,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1692915649, now seen corresponding path program 1 times [2020-07-20 14:05:36,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:05:36,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538287440] [2020-07-20 14:05:36,340 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:05:36,574 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:05:36,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:05:36,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 14:05:36,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:05:36,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:05:36,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:05:36,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538287440] [2020-07-20 14:05:36,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:05:36,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:05:36,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901651454] [2020-07-20 14:05:36,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:05:36,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:05:36,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:05:36,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:05:36,744 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 3 states. [2020-07-20 14:05:37,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:05:37,692 INFO L93 Difference]: Finished difference Result 547 states and 938 transitions. [2020-07-20 14:05:37,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:05:37,698 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-07-20 14:05:37,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:05:37,729 INFO L225 Difference]: With dead ends: 547 [2020-07-20 14:05:37,729 INFO L226 Difference]: Without dead ends: 278 [2020-07-20 14:05:37,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:05:37,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-07-20 14:05:37,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2020-07-20 14:05:37,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-07-20 14:05:37,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 400 transitions. [2020-07-20 14:05:37,864 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 400 transitions. Word has length 91 [2020-07-20 14:05:37,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:05:37,865 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 400 transitions. [2020-07-20 14:05:37,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:05:37,866 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 400 transitions. [2020-07-20 14:05:37,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-07-20 14:05:37,878 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:05:37,878 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:05:38,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:05:38,092 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:05:38,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:05:38,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1768869960, now seen corresponding path program 1 times [2020-07-20 14:05:38,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:05:38,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258989631] [2020-07-20 14:05:38,095 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:05:38,208 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:05:38,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:05:38,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 14:05:38,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:05:38,257 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:05:38,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:05:38,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258989631] [2020-07-20 14:05:38,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:05:38,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 14:05:38,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336465351] [2020-07-20 14:05:38,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:05:38,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:05:38,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:05:38,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:05:38,262 INFO L87 Difference]: Start difference. First operand 278 states and 400 transitions. Second operand 5 states. [2020-07-20 14:05:39,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:05:39,061 INFO L93 Difference]: Finished difference Result 701 states and 1021 transitions. [2020-07-20 14:05:39,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 14:05:39,062 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-07-20 14:05:39,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:05:39,073 INFO L225 Difference]: With dead ends: 701 [2020-07-20 14:05:39,073 INFO L226 Difference]: Without dead ends: 429 [2020-07-20 14:05:39,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-20 14:05:39,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-07-20 14:05:39,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 417. [2020-07-20 14:05:39,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-07-20 14:05:39,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 585 transitions. [2020-07-20 14:05:39,122 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 585 transitions. Word has length 101 [2020-07-20 14:05:39,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:05:39,122 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 585 transitions. [2020-07-20 14:05:39,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:05:39,123 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 585 transitions. [2020-07-20 14:05:39,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-07-20 14:05:39,125 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:05:39,125 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-20 14:05:39,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:05:39,342 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:05:39,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:05:39,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1027824070, now seen corresponding path program 1 times [2020-07-20 14:05:39,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:05:39,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345712255] [2020-07-20 14:05:39,345 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:05:39,466 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:05:39,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:05:39,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 14:05:39,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:05:39,498 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:05:39,499 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:05:39,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345712255] [2020-07-20 14:05:39,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:05:39,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:05:39,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625730127] [2020-07-20 14:05:39,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:05:39,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:05:39,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:05:39,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:05:39,501 INFO L87 Difference]: Start difference. First operand 417 states and 585 transitions. Second operand 3 states. [2020-07-20 14:05:40,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:05:40,092 INFO L93 Difference]: Finished difference Result 1235 states and 1769 transitions. [2020-07-20 14:05:40,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:05:40,092 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2020-07-20 14:05:40,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:05:40,098 INFO L225 Difference]: With dead ends: 1235 [2020-07-20 14:05:40,098 INFO L226 Difference]: Without dead ends: 824 [2020-07-20 14:05:40,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:05:40,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2020-07-20 14:05:40,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 689. [2020-07-20 14:05:40,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 689 states. [2020-07-20 14:05:40,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 919 transitions. [2020-07-20 14:05:40,130 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 919 transitions. Word has length 102 [2020-07-20 14:05:40,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:05:40,131 INFO L479 AbstractCegarLoop]: Abstraction has 689 states and 919 transitions. [2020-07-20 14:05:40,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:05:40,131 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 919 transitions. [2020-07-20 14:05:40,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-07-20 14:05:40,133 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:05:40,134 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-20 14:05:40,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:05:40,345 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:05:40,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:05:40,346 INFO L82 PathProgramCache]: Analyzing trace with hash -2011229172, now seen corresponding path program 1 times [2020-07-20 14:05:40,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:05:40,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462310704] [2020-07-20 14:05:40,347 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:05:40,451 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:05:40,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:05:40,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 14:05:40,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:05:40,517 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:05:40,517 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:05:40,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462310704] [2020-07-20 14:05:40,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:05:40,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:05:40,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784582367] [2020-07-20 14:05:40,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:05:40,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:05:40,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:05:40,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:05:40,520 INFO L87 Difference]: Start difference. First operand 689 states and 919 transitions. Second operand 3 states. [2020-07-20 14:05:41,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:05:41,113 INFO L93 Difference]: Finished difference Result 1914 states and 2622 transitions. [2020-07-20 14:05:41,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:05:41,114 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-07-20 14:05:41,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:05:41,122 INFO L225 Difference]: With dead ends: 1914 [2020-07-20 14:05:41,122 INFO L226 Difference]: Without dead ends: 1231 [2020-07-20 14:05:41,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:05:41,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2020-07-20 14:05:41,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1096. [2020-07-20 14:05:41,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1096 states. [2020-07-20 14:05:41,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1096 states to 1096 states and 1474 transitions. [2020-07-20 14:05:41,164 INFO L78 Accepts]: Start accepts. Automaton has 1096 states and 1474 transitions. Word has length 103 [2020-07-20 14:05:41,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:05:41,165 INFO L479 AbstractCegarLoop]: Abstraction has 1096 states and 1474 transitions. [2020-07-20 14:05:41,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:05:41,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1096 states and 1474 transitions. [2020-07-20 14:05:41,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-07-20 14:05:41,169 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:05:41,170 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:05:41,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:05:41,385 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:05:41,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:05:41,386 INFO L82 PathProgramCache]: Analyzing trace with hash 2004252269, now seen corresponding path program 1 times [2020-07-20 14:05:41,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:05:41,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175404395] [2020-07-20 14:05:41,387 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:05:41,493 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:05:41,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:05:41,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:05:41,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:05:41,550 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-07-20 14:05:41,551 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:05:41,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175404395] [2020-07-20 14:05:41,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:05:41,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:05:41,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137019110] [2020-07-20 14:05:41,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:05:41,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:05:41,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:05:41,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:05:41,555 INFO L87 Difference]: Start difference. First operand 1096 states and 1474 transitions. Second operand 3 states. [2020-07-20 14:05:42,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:05:42,133 INFO L93 Difference]: Finished difference Result 2863 states and 3930 transitions. [2020-07-20 14:05:42,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:05:42,134 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 125 [2020-07-20 14:05:42,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:05:42,144 INFO L225 Difference]: With dead ends: 2863 [2020-07-20 14:05:42,144 INFO L226 Difference]: Without dead ends: 1773 [2020-07-20 14:05:42,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:05:42,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1773 states. [2020-07-20 14:05:42,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1773 to 1773. [2020-07-20 14:05:42,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1773 states. [2020-07-20 14:05:42,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1773 states to 1773 states and 2286 transitions. [2020-07-20 14:05:42,197 INFO L78 Accepts]: Start accepts. Automaton has 1773 states and 2286 transitions. Word has length 125 [2020-07-20 14:05:42,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:05:42,198 INFO L479 AbstractCegarLoop]: Abstraction has 1773 states and 2286 transitions. [2020-07-20 14:05:42,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:05:42,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1773 states and 2286 transitions. [2020-07-20 14:05:42,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-07-20 14:05:42,202 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:05:42,202 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:05:42,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:05:42,417 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:05:42,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:05:42,418 INFO L82 PathProgramCache]: Analyzing trace with hash 996009503, now seen corresponding path program 1 times [2020-07-20 14:05:42,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:05:42,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628664247] [2020-07-20 14:05:42,419 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:05:42,531 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:05:42,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:05:42,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:05:42,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:05:42,588 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:05:42,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:05:42,700 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:05:42,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628664247] [2020-07-20 14:05:42,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:05:42,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-20 14:05:42,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378666087] [2020-07-20 14:05:42,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 14:05:42,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:05:42,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 14:05:42,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 14:05:42,704 INFO L87 Difference]: Start difference. First operand 1773 states and 2286 transitions. Second operand 6 states. [2020-07-20 14:05:43,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:05:43,787 INFO L93 Difference]: Finished difference Result 3918 states and 5288 transitions. [2020-07-20 14:05:43,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 14:05:43,788 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2020-07-20 14:05:43,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:05:43,805 INFO L225 Difference]: With dead ends: 3918 [2020-07-20 14:05:43,806 INFO L226 Difference]: Without dead ends: 2151 [2020-07-20 14:05:43,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 286 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-20 14:05:43,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2151 states. [2020-07-20 14:05:43,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2151 to 1793. [2020-07-20 14:05:43,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1793 states. [2020-07-20 14:05:43,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 2221 transitions. [2020-07-20 14:05:43,906 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 2221 transitions. Word has length 145 [2020-07-20 14:05:43,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:05:43,906 INFO L479 AbstractCegarLoop]: Abstraction has 1793 states and 2221 transitions. [2020-07-20 14:05:43,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 14:05:43,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 2221 transitions. [2020-07-20 14:05:43,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-07-20 14:05:43,912 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:05:43,912 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:05:44,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:05:44,154 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:05:44,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:05:44,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1157453929, now seen corresponding path program 1 times [2020-07-20 14:05:44,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:05:44,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309833888] [2020-07-20 14:05:44,155 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:05:44,269 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:05:44,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:05:44,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:05:44,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:05:44,324 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-20 14:05:44,324 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:05:44,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1309833888] [2020-07-20 14:05:44,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:05:44,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:05:44,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164929082] [2020-07-20 14:05:44,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:05:44,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:05:44,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:05:44,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:05:44,327 INFO L87 Difference]: Start difference. First operand 1793 states and 2221 transitions. Second operand 3 states. [2020-07-20 14:05:44,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:05:44,933 INFO L93 Difference]: Finished difference Result 4672 states and 5904 transitions. [2020-07-20 14:05:44,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:05:44,940 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2020-07-20 14:05:44,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:05:44,954 INFO L225 Difference]: With dead ends: 4672 [2020-07-20 14:05:44,954 INFO L226 Difference]: Without dead ends: 2885 [2020-07-20 14:05:44,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:05:44,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2885 states. [2020-07-20 14:05:45,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2885 to 2750. [2020-07-20 14:05:45,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2750 states. [2020-07-20 14:05:45,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2750 states to 2750 states and 3404 transitions. [2020-07-20 14:05:45,038 INFO L78 Accepts]: Start accepts. Automaton has 2750 states and 3404 transitions. Word has length 149 [2020-07-20 14:05:45,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:05:45,039 INFO L479 AbstractCegarLoop]: Abstraction has 2750 states and 3404 transitions. [2020-07-20 14:05:45,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:05:45,040 INFO L276 IsEmpty]: Start isEmpty. Operand 2750 states and 3404 transitions. [2020-07-20 14:05:45,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-07-20 14:05:45,047 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:05:45,048 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:05:45,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:05:45,261 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:05:45,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:05:45,261 INFO L82 PathProgramCache]: Analyzing trace with hash 152592045, now seen corresponding path program 1 times [2020-07-20 14:05:45,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:05:45,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664412074] [2020-07-20 14:05:45,262 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:05:45,415 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:05:45,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:05:45,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 14:05:45,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:05:45,465 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:05:45,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:05:45,544 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:05:45,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [664412074] [2020-07-20 14:05:45,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:05:45,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-20 14:05:45,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585576671] [2020-07-20 14:05:45,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 14:05:45,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:05:45,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 14:05:45,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 14:05:45,547 INFO L87 Difference]: Start difference. First operand 2750 states and 3404 transitions. Second operand 7 states. [2020-07-20 14:05:46,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:05:46,314 INFO L93 Difference]: Finished difference Result 5550 states and 6987 transitions. [2020-07-20 14:05:46,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 14:05:46,314 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 157 [2020-07-20 14:05:46,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:05:46,315 INFO L225 Difference]: With dead ends: 5550 [2020-07-20 14:05:46,315 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 14:05:46,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-07-20 14:05:46,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 14:05:46,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 14:05:46,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 14:05:46,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 14:05:46,334 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 157 [2020-07-20 14:05:46,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:05:46,334 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 14:05:46,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 14:05:46,335 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 14:05:46,335 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 14:05:46,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:05:46,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 14:05:46,937 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 64 [2020-07-20 14:05:47,882 WARN L193 SmtUtils]: Spent 792.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 67 [2020-07-20 14:05:48,175 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2020-07-20 14:05:48,465 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2020-07-20 14:05:48,469 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 14:05:48,470 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a16~0 |old(~a16~0)|) (= ~a17~0 |old(~a17~0)|)) [2020-07-20 14:05:48,470 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 14:05:48,470 INFO L268 CegarLoopResult]: For program point L333(lines 333 390) no Hoare annotation was computed. [2020-07-20 14:05:48,470 INFO L268 CegarLoopResult]: For program point L102(lines 102 390) no Hoare annotation was computed. [2020-07-20 14:05:48,471 INFO L268 CegarLoopResult]: For program point L565-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,471 INFO L268 CegarLoopResult]: For program point L532-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,471 INFO L268 CegarLoopResult]: For program point L499-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,471 INFO L268 CegarLoopResult]: For program point L466-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,471 INFO L268 CegarLoopResult]: For program point L433-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,472 INFO L268 CegarLoopResult]: For program point L400-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,473 INFO L268 CegarLoopResult]: For program point L268(lines 268 390) no Hoare annotation was computed. [2020-07-20 14:05:48,473 INFO L268 CegarLoopResult]: For program point L136(lines 136 390) no Hoare annotation was computed. [2020-07-20 14:05:48,473 INFO L268 CegarLoopResult]: For program point L566(line 566) no Hoare annotation was computed. [2020-07-20 14:05:48,473 INFO L268 CegarLoopResult]: For program point L533(line 533) no Hoare annotation was computed. [2020-07-20 14:05:48,474 INFO L268 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2020-07-20 14:05:48,474 INFO L268 CegarLoopResult]: For program point L467(line 467) no Hoare annotation was computed. [2020-07-20 14:05:48,474 INFO L268 CegarLoopResult]: For program point L434(line 434) no Hoare annotation was computed. [2020-07-20 14:05:48,474 INFO L268 CegarLoopResult]: For program point L401(line 401) no Hoare annotation was computed. [2020-07-20 14:05:48,474 INFO L268 CegarLoopResult]: For program point L203(lines 203 390) no Hoare annotation was computed. [2020-07-20 14:05:48,474 INFO L268 CegarLoopResult]: For program point L72(lines 72 390) no Hoare annotation was computed. [2020-07-20 14:05:48,474 INFO L268 CegarLoopResult]: For program point L568-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,475 INFO L268 CegarLoopResult]: For program point L535-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,475 INFO L268 CegarLoopResult]: For program point L502-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,475 INFO L268 CegarLoopResult]: For program point L469-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,475 INFO L268 CegarLoopResult]: For program point L436-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,475 INFO L268 CegarLoopResult]: For program point L403-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,475 INFO L268 CegarLoopResult]: For program point L337(lines 337 390) no Hoare annotation was computed. [2020-07-20 14:05:48,476 INFO L268 CegarLoopResult]: For program point L238(lines 238 390) no Hoare annotation was computed. [2020-07-20 14:05:48,476 INFO L268 CegarLoopResult]: For program point L569(line 569) no Hoare annotation was computed. [2020-07-20 14:05:48,476 INFO L268 CegarLoopResult]: For program point L536(line 536) no Hoare annotation was computed. [2020-07-20 14:05:48,476 INFO L268 CegarLoopResult]: For program point L503(line 503) no Hoare annotation was computed. [2020-07-20 14:05:48,476 INFO L268 CegarLoopResult]: For program point L470(line 470) no Hoare annotation was computed. [2020-07-20 14:05:48,477 INFO L268 CegarLoopResult]: For program point L437(line 437) no Hoare annotation was computed. [2020-07-20 14:05:48,477 INFO L268 CegarLoopResult]: For program point L404(line 404) no Hoare annotation was computed. [2020-07-20 14:05:48,477 INFO L268 CegarLoopResult]: For program point L173(lines 173 390) no Hoare annotation was computed. [2020-07-20 14:05:48,477 INFO L268 CegarLoopResult]: For program point L140(lines 140 390) no Hoare annotation was computed. [2020-07-20 14:05:48,477 INFO L268 CegarLoopResult]: For program point L372(lines 372 390) no Hoare annotation was computed. [2020-07-20 14:05:48,477 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 431) no Hoare annotation was computed. [2020-07-20 14:05:48,477 INFO L268 CegarLoopResult]: For program point L306(lines 306 390) no Hoare annotation was computed. [2020-07-20 14:05:48,478 INFO L268 CegarLoopResult]: For program point L273(lines 273 390) no Hoare annotation was computed. [2020-07-20 14:05:48,478 INFO L268 CegarLoopResult]: For program point L108(lines 108 390) no Hoare annotation was computed. [2020-07-20 14:05:48,478 INFO L268 CegarLoopResult]: For program point L571-1(lines 571 573) no Hoare annotation was computed. [2020-07-20 14:05:48,478 INFO L268 CegarLoopResult]: For program point L538-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,478 INFO L268 CegarLoopResult]: For program point L505-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,478 INFO L268 CegarLoopResult]: For program point L472-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,478 INFO L268 CegarLoopResult]: For program point L439-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,478 INFO L268 CegarLoopResult]: For program point L406-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,478 INFO L268 CegarLoopResult]: For program point L208(lines 208 390) no Hoare annotation was computed. [2020-07-20 14:05:48,479 INFO L268 CegarLoopResult]: For program point L43(lines 43 390) no Hoare annotation was computed. [2020-07-20 14:05:48,479 INFO L268 CegarLoopResult]: For program point L572(line 572) no Hoare annotation was computed. [2020-07-20 14:05:48,479 INFO L268 CegarLoopResult]: For program point L539(line 539) no Hoare annotation was computed. [2020-07-20 14:05:48,479 INFO L268 CegarLoopResult]: For program point L506(line 506) no Hoare annotation was computed. [2020-07-20 14:05:48,479 INFO L268 CegarLoopResult]: For program point L473(line 473) no Hoare annotation was computed. [2020-07-20 14:05:48,479 INFO L268 CegarLoopResult]: For program point L440(line 440) no Hoare annotation was computed. [2020-07-20 14:05:48,479 INFO L268 CegarLoopResult]: For program point L407(line 407) no Hoare annotation was computed. [2020-07-20 14:05:48,479 INFO L268 CegarLoopResult]: For program point L144(lines 144 390) no Hoare annotation was computed. [2020-07-20 14:05:48,480 INFO L268 CegarLoopResult]: For program point L541-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,480 INFO L268 CegarLoopResult]: For program point L508-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,480 INFO L268 CegarLoopResult]: For program point L475-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,480 INFO L268 CegarLoopResult]: For program point L442-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,480 INFO L268 CegarLoopResult]: For program point L409-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,480 INFO L268 CegarLoopResult]: For program point L178(lines 178 390) no Hoare annotation was computed. [2020-07-20 14:05:48,480 INFO L268 CegarLoopResult]: For program point L542(line 542) no Hoare annotation was computed. [2020-07-20 14:05:48,480 INFO L268 CegarLoopResult]: For program point L509(line 509) no Hoare annotation was computed. [2020-07-20 14:05:48,481 INFO L268 CegarLoopResult]: For program point L476(line 476) no Hoare annotation was computed. [2020-07-20 14:05:48,481 INFO L268 CegarLoopResult]: For program point L443(line 443) no Hoare annotation was computed. [2020-07-20 14:05:48,481 INFO L268 CegarLoopResult]: For program point L410(line 410) no Hoare annotation was computed. [2020-07-20 14:05:48,481 INFO L268 CegarLoopResult]: For program point L377(lines 377 390) no Hoare annotation was computed. [2020-07-20 14:05:48,481 INFO L268 CegarLoopResult]: For program point L278(lines 278 390) no Hoare annotation was computed. [2020-07-20 14:05:48,481 INFO L268 CegarLoopResult]: For program point L245(lines 245 390) no Hoare annotation was computed. [2020-07-20 14:05:48,482 INFO L268 CegarLoopResult]: For program point L80(lines 80 390) no Hoare annotation was computed. [2020-07-20 14:05:48,482 INFO L268 CegarLoopResult]: For program point L345(lines 345 390) no Hoare annotation was computed. [2020-07-20 14:05:48,482 INFO L268 CegarLoopResult]: For program point L312(lines 312 390) no Hoare annotation was computed. [2020-07-20 14:05:48,482 INFO L268 CegarLoopResult]: For program point L114(lines 114 390) no Hoare annotation was computed. [2020-07-20 14:05:48,482 INFO L268 CegarLoopResult]: For program point L544-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,482 INFO L268 CegarLoopResult]: For program point L511-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,483 INFO L268 CegarLoopResult]: For program point L478-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,483 INFO L268 CegarLoopResult]: For program point L445-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,483 INFO L268 CegarLoopResult]: For program point L412-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,483 INFO L268 CegarLoopResult]: For program point L214(lines 214 390) no Hoare annotation was computed. [2020-07-20 14:05:48,483 INFO L268 CegarLoopResult]: For program point L148(lines 148 390) no Hoare annotation was computed. [2020-07-20 14:05:48,483 INFO L268 CegarLoopResult]: For program point L49(lines 49 390) no Hoare annotation was computed. [2020-07-20 14:05:48,483 INFO L268 CegarLoopResult]: For program point L545(line 545) no Hoare annotation was computed. [2020-07-20 14:05:48,484 INFO L268 CegarLoopResult]: For program point L512(line 512) no Hoare annotation was computed. [2020-07-20 14:05:48,484 INFO L268 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2020-07-20 14:05:48,484 INFO L268 CegarLoopResult]: For program point L446(line 446) no Hoare annotation was computed. [2020-07-20 14:05:48,484 INFO L268 CegarLoopResult]: For program point L413(line 413) no Hoare annotation was computed. [2020-07-20 14:05:48,484 INFO L268 CegarLoopResult]: For program point L84(lines 84 390) no Hoare annotation was computed. [2020-07-20 14:05:48,484 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,484 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,484 INFO L268 CegarLoopResult]: For program point L547-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,484 INFO L268 CegarLoopResult]: For program point L514-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,484 INFO L268 CegarLoopResult]: For program point L481-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,485 INFO L268 CegarLoopResult]: For program point L448-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,485 INFO L268 CegarLoopResult]: For program point L382(lines 382 390) no Hoare annotation was computed. [2020-07-20 14:05:48,485 INFO L268 CegarLoopResult]: For program point L415-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,485 INFO L268 CegarLoopResult]: For program point L316(lines 316 390) no Hoare annotation was computed. [2020-07-20 14:05:48,485 INFO L268 CegarLoopResult]: For program point L250(lines 250 390) no Hoare annotation was computed. [2020-07-20 14:05:48,485 INFO L268 CegarLoopResult]: For program point L548(line 548) no Hoare annotation was computed. [2020-07-20 14:05:48,485 INFO L268 CegarLoopResult]: For program point L515(line 515) no Hoare annotation was computed. [2020-07-20 14:05:48,485 INFO L268 CegarLoopResult]: For program point L482(line 482) no Hoare annotation was computed. [2020-07-20 14:05:48,485 INFO L268 CegarLoopResult]: For program point L449(line 449) no Hoare annotation was computed. [2020-07-20 14:05:48,486 INFO L268 CegarLoopResult]: For program point L416(line 416) no Hoare annotation was computed. [2020-07-20 14:05:48,486 INFO L268 CegarLoopResult]: For program point L218(lines 218 390) no Hoare annotation was computed. [2020-07-20 14:05:48,486 INFO L268 CegarLoopResult]: For program point L152(lines 152 390) no Hoare annotation was computed. [2020-07-20 14:05:48,486 INFO L268 CegarLoopResult]: For program point L119(lines 119 390) no Hoare annotation was computed. [2020-07-20 14:05:48,486 INFO L268 CegarLoopResult]: For program point L318(lines 318 390) no Hoare annotation was computed. [2020-07-20 14:05:48,486 INFO L268 CegarLoopResult]: For program point L186(lines 186 390) no Hoare annotation was computed. [2020-07-20 14:05:48,486 INFO L268 CegarLoopResult]: For program point L54(lines 54 390) no Hoare annotation was computed. [2020-07-20 14:05:48,486 INFO L268 CegarLoopResult]: For program point L550-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,486 INFO L268 CegarLoopResult]: For program point L517-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,487 INFO L268 CegarLoopResult]: For program point L484-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,487 INFO L268 CegarLoopResult]: For program point L451-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,487 INFO L268 CegarLoopResult]: For program point L418-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,487 INFO L268 CegarLoopResult]: For program point L286(lines 286 390) no Hoare annotation was computed. [2020-07-20 14:05:48,487 INFO L268 CegarLoopResult]: For program point L551(line 551) no Hoare annotation was computed. [2020-07-20 14:05:48,487 INFO L268 CegarLoopResult]: For program point L518(line 518) no Hoare annotation was computed. [2020-07-20 14:05:48,487 INFO L268 CegarLoopResult]: For program point L485(line 485) no Hoare annotation was computed. [2020-07-20 14:05:48,488 INFO L268 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2020-07-20 14:05:48,488 INFO L268 CegarLoopResult]: For program point L419(line 419) no Hoare annotation was computed. [2020-07-20 14:05:48,488 INFO L268 CegarLoopResult]: For program point L353(lines 353 390) no Hoare annotation was computed. [2020-07-20 14:05:48,488 INFO L268 CegarLoopResult]: For program point L189(lines 189 390) no Hoare annotation was computed. [2020-07-20 14:05:48,488 INFO L268 CegarLoopResult]: For program point L553-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,488 INFO L268 CegarLoopResult]: For program point L520-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,489 INFO L268 CegarLoopResult]: For program point L487-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,489 INFO L268 CegarLoopResult]: For program point L454-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,489 INFO L268 CegarLoopResult]: For program point L421-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,489 INFO L268 CegarLoopResult]: For program point L355(lines 355 390) no Hoare annotation was computed. [2020-07-20 14:05:48,489 INFO L268 CegarLoopResult]: For program point L256(lines 256 390) no Hoare annotation was computed. [2020-07-20 14:05:48,489 INFO L268 CegarLoopResult]: For program point L223(lines 223 390) no Hoare annotation was computed. [2020-07-20 14:05:48,489 INFO L268 CegarLoopResult]: For program point L124(lines 124 390) no Hoare annotation was computed. [2020-07-20 14:05:48,490 INFO L268 CegarLoopResult]: For program point L554(line 554) no Hoare annotation was computed. [2020-07-20 14:05:48,490 INFO L268 CegarLoopResult]: For program point L521(line 521) no Hoare annotation was computed. [2020-07-20 14:05:48,490 INFO L268 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2020-07-20 14:05:48,490 INFO L268 CegarLoopResult]: For program point L455(line 455) no Hoare annotation was computed. [2020-07-20 14:05:48,490 INFO L268 CegarLoopResult]: For program point L422(line 422) no Hoare annotation was computed. [2020-07-20 14:05:48,490 INFO L268 CegarLoopResult]: For program point L92(lines 92 390) no Hoare annotation was computed. [2020-07-20 14:05:48,491 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 30 575) the Hoare annotation is: (let ((.cse12 (not (<= |old(~a16~0)| 5))) (.cse7 (not (= 1 |old(~a20~0)|))) (.cse6 (= 1 ~a20~0)) (.cse1 (<= ~a16~0 |old(~a16~0)|)) (.cse11 (<= ~a16~0 5))) (let ((.cse2 (= ~a17~0 |old(~a17~0)|)) (.cse8 (not (<= |old(~a16~0)| 4))) (.cse15 (<= 15 ~a8~0)) (.cse3 (<= 5 ~a16~0)) (.cse4 (not (<= 5 |old(~a16~0)|))) (.cse10 (let ((.cse17 (= 1 ~a7~0))) (or (and .cse1 .cse17 .cse6) (and .cse1 .cse17 .cse11)))) (.cse14 (= 1 ~a17~0)) (.cse9 (let ((.cse16 (not (= 1 |old(~a7~0)|)))) (and (or .cse16 .cse12) (or .cse7 .cse16)))) (.cse13 (not (= 1 |old(~a17~0)|))) (.cse0 (not (<= 15 |old(~a8~0)|))) (.cse5 (not (<= |old(~a17~0)| 0)))) (and (or .cse0 (and .cse1 .cse2 .cse3) .cse4 .cse5) (or (and .cse1 .cse2 .cse6) .cse7 .cse8) (or .cse9 (and .cse10 .cse2) .cse5) (or (and .cse2 .cse11 .cse3) .cse12 .cse4 .cse5) (or .cse7 .cse13 .cse4 (and .cse1 .cse14 .cse3 .cse6)) (or (and .cse1 .cse2) .cse8 .cse5) (or (and .cse1 .cse14 .cse15) .cse0 .cse13) (or .cse0 .cse15 .cse5) (or .cse0 .cse3 .cse13 .cse4) (or (and .cse10 .cse14) .cse9 .cse13) (or .cse7 .cse0 .cse6 .cse5)))) [2020-07-20 14:05:48,491 INFO L268 CegarLoopResult]: For program point L324(lines 324 390) no Hoare annotation was computed. [2020-07-20 14:05:48,491 INFO L268 CegarLoopResult]: For program point L556-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,491 INFO L268 CegarLoopResult]: For program point L523-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,491 INFO L268 CegarLoopResult]: For program point L490-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,491 INFO L268 CegarLoopResult]: For program point L457-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,492 INFO L268 CegarLoopResult]: For program point L391(lines 391 393) no Hoare annotation was computed. [2020-07-20 14:05:48,492 INFO L268 CegarLoopResult]: For program point L424-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,492 INFO L268 CegarLoopResult]: For program point L391-2(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,492 INFO L268 CegarLoopResult]: For program point L292(lines 292 390) no Hoare annotation was computed. [2020-07-20 14:05:48,492 INFO L268 CegarLoopResult]: For program point L160(lines 160 390) no Hoare annotation was computed. [2020-07-20 14:05:48,492 INFO L268 CegarLoopResult]: For program point L557(line 557) no Hoare annotation was computed. [2020-07-20 14:05:48,492 INFO L268 CegarLoopResult]: For program point L524(line 524) no Hoare annotation was computed. [2020-07-20 14:05:48,493 INFO L268 CegarLoopResult]: For program point L491(line 491) no Hoare annotation was computed. [2020-07-20 14:05:48,493 INFO L268 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2020-07-20 14:05:48,493 INFO L268 CegarLoopResult]: For program point L425(line 425) no Hoare annotation was computed. [2020-07-20 14:05:48,493 INFO L268 CegarLoopResult]: For program point L392(line 392) no Hoare annotation was computed. [2020-07-20 14:05:48,493 INFO L268 CegarLoopResult]: For program point L194(lines 194 390) no Hoare annotation was computed. [2020-07-20 14:05:48,493 INFO L268 CegarLoopResult]: For program point L62(lines 62 390) no Hoare annotation was computed. [2020-07-20 14:05:48,493 INFO L268 CegarLoopResult]: For program point L261(lines 261 390) no Hoare annotation was computed. [2020-07-20 14:05:48,494 INFO L268 CegarLoopResult]: For program point L129(lines 129 390) no Hoare annotation was computed. [2020-07-20 14:05:48,494 INFO L268 CegarLoopResult]: For program point L559-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,494 INFO L268 CegarLoopResult]: For program point L526-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,494 INFO L268 CegarLoopResult]: For program point L493-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,494 INFO L268 CegarLoopResult]: For program point L460-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,494 INFO L268 CegarLoopResult]: For program point L427-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,494 INFO L268 CegarLoopResult]: For program point L361(lines 361 390) no Hoare annotation was computed. [2020-07-20 14:05:48,495 INFO L268 CegarLoopResult]: For program point L394-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,495 INFO L268 CegarLoopResult]: For program point L97(lines 97 390) no Hoare annotation was computed. [2020-07-20 14:05:48,495 INFO L268 CegarLoopResult]: For program point L31(lines 31 390) no Hoare annotation was computed. [2020-07-20 14:05:48,495 INFO L268 CegarLoopResult]: For program point L560(line 560) no Hoare annotation was computed. [2020-07-20 14:05:48,495 INFO L268 CegarLoopResult]: For program point L527(line 527) no Hoare annotation was computed. [2020-07-20 14:05:48,495 INFO L268 CegarLoopResult]: For program point L494(line 494) no Hoare annotation was computed. [2020-07-20 14:05:48,495 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-20 14:05:48,495 INFO L268 CegarLoopResult]: For program point L428(line 428) no Hoare annotation was computed. [2020-07-20 14:05:48,496 INFO L268 CegarLoopResult]: For program point L395(line 395) no Hoare annotation was computed. [2020-07-20 14:05:48,496 INFO L268 CegarLoopResult]: For program point L329(lines 329 390) no Hoare annotation was computed. [2020-07-20 14:05:48,496 INFO L268 CegarLoopResult]: For program point L197(lines 197 390) no Hoare annotation was computed. [2020-07-20 14:05:48,496 INFO L268 CegarLoopResult]: For program point L65(lines 65 390) no Hoare annotation was computed. [2020-07-20 14:05:48,496 INFO L268 CegarLoopResult]: For program point L363(lines 363 390) no Hoare annotation was computed. [2020-07-20 14:05:48,496 INFO L268 CegarLoopResult]: For program point L231(lines 231 390) no Hoare annotation was computed. [2020-07-20 14:05:48,497 INFO L268 CegarLoopResult]: For program point L165(lines 165 390) no Hoare annotation was computed. [2020-07-20 14:05:48,497 INFO L268 CegarLoopResult]: For program point L562-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,497 INFO L268 CegarLoopResult]: For program point L529-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,497 INFO L268 CegarLoopResult]: For program point L496-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,497 INFO L268 CegarLoopResult]: For program point L463-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,497 INFO L268 CegarLoopResult]: For program point L430-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,497 INFO L268 CegarLoopResult]: For program point L397-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:48,498 INFO L268 CegarLoopResult]: For program point L265(lines 265 390) no Hoare annotation was computed. [2020-07-20 14:05:48,498 INFO L268 CegarLoopResult]: For program point L563(line 563) no Hoare annotation was computed. [2020-07-20 14:05:48,498 INFO L268 CegarLoopResult]: For program point L530(line 530) no Hoare annotation was computed. [2020-07-20 14:05:48,498 INFO L268 CegarLoopResult]: For program point L497(line 497) no Hoare annotation was computed. [2020-07-20 14:05:48,498 INFO L268 CegarLoopResult]: For program point L464(line 464) no Hoare annotation was computed. [2020-07-20 14:05:48,498 INFO L268 CegarLoopResult]: For program point L431(line 431) no Hoare annotation was computed. [2020-07-20 14:05:48,499 INFO L268 CegarLoopResult]: For program point L398(line 398) no Hoare annotation was computed. [2020-07-20 14:05:48,499 INFO L268 CegarLoopResult]: For program point L365(lines 365 390) no Hoare annotation was computed. [2020-07-20 14:05:48,499 INFO L268 CegarLoopResult]: For program point L299(lines 299 390) no Hoare annotation was computed. [2020-07-20 14:05:48,499 INFO L268 CegarLoopResult]: For program point L35(lines 35 390) no Hoare annotation was computed. [2020-07-20 14:05:48,499 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 14:05:48,499 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= 1 ~a17~0) (<= ~a16~0 5) (<= 15 ~a8~0) (<= 5 ~a16~0) (= 1 ~a20~0)) [2020-07-20 14:05:48,500 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 14:05:48,500 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 14:05:48,500 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 577 594) the Hoare annotation is: (or (not (= 1 |old(~a20~0)|)) (not (<= 15 |old(~a8~0)|)) (not (<= |old(~a16~0)| 5)) (not (= 1 |old(~a17~0)|)) (not (<= 5 |old(~a16~0)|)) (and (= 1 ~a17~0) (<= ~a16~0 5) (<= 15 ~a8~0) (<= 5 ~a16~0) (= 1 ~a20~0))) [2020-07-20 14:05:48,500 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 577 594) no Hoare annotation was computed. [2020-07-20 14:05:48,501 INFO L264 CegarLoopResult]: At program point L591(line 591) the Hoare annotation is: (let ((.cse1 (<= ~a16~0 5)) (.cse2 (= 1 ~a20~0))) (let ((.cse4 (let ((.cse6 (= 1 ~a7~0))) (or (and .cse6 .cse1) (and .cse6 .cse2)))) (.cse0 (<= ~a17~0 0)) (.cse5 (<= 15 ~a8~0)) (.cse3 (= 1 ~a17~0))) (or (and .cse0 .cse1) (and .cse2 (<= ~a16~0 4)) (not (= 1 |old(~a20~0)|)) (not (<= 15 |old(~a8~0)|)) (and .cse3 .cse4) (not (<= |old(~a16~0)| 5)) (not (= 1 |old(~a17~0)|)) (not (<= 5 |old(~a16~0)|)) (and .cse3 .cse2) (and .cse0 .cse4) (and .cse0 .cse5) (and .cse5 .cse3)))) [2020-07-20 14:05:48,501 INFO L268 CegarLoopResult]: For program point L591-1(line 591) no Hoare annotation was computed. [2020-07-20 14:05:48,501 INFO L268 CegarLoopResult]: For program point L588(line 588) no Hoare annotation was computed. [2020-07-20 14:05:48,501 INFO L264 CegarLoopResult]: At program point L583-2(lines 583 593) the Hoare annotation is: (let ((.cse1 (<= ~a16~0 5)) (.cse2 (= 1 ~a20~0))) (let ((.cse4 (let ((.cse6 (= 1 ~a7~0))) (or (and .cse6 .cse1) (and .cse6 .cse2)))) (.cse0 (<= ~a17~0 0)) (.cse5 (<= 15 ~a8~0)) (.cse3 (= 1 ~a17~0))) (or (and .cse0 .cse1) (and .cse2 (<= ~a16~0 4)) (not (= 1 |old(~a20~0)|)) (not (<= 15 |old(~a8~0)|)) (and .cse3 .cse4) (not (<= |old(~a16~0)| 5)) (not (= 1 |old(~a17~0)|)) (not (<= 5 |old(~a16~0)|)) (and .cse3 .cse2) (and .cse0 .cse4) (and .cse0 .cse5) (and .cse5 .cse3)))) [2020-07-20 14:05:48,501 INFO L268 CegarLoopResult]: For program point L583-3(lines 577 594) no Hoare annotation was computed. [2020-07-20 14:05:48,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 02:05:48 BoogieIcfgContainer [2020-07-20 14:05:48,525 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 14:05:48,527 INFO L168 Benchmark]: Toolchain (without parser) took 14581.72 ms. Allocated memory was 138.9 MB in the beginning and 399.0 MB in the end (delta: 260.0 MB). Free memory was 101.6 MB in the beginning and 88.4 MB in the end (delta: 13.2 MB). Peak memory consumption was 275.8 MB. Max. memory is 7.1 GB. [2020-07-20 14:05:48,528 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-20 14:05:48,529 INFO L168 Benchmark]: CACSL2BoogieTranslator took 775.50 ms. Allocated memory was 138.9 MB in the beginning and 206.6 MB in the end (delta: 67.6 MB). Free memory was 101.4 MB in the beginning and 172.8 MB in the end (delta: -71.4 MB). Peak memory consumption was 36.8 MB. Max. memory is 7.1 GB. [2020-07-20 14:05:48,546 INFO L168 Benchmark]: Boogie Preprocessor took 124.00 ms. Allocated memory is still 206.6 MB. Free memory was 172.8 MB in the beginning and 168.0 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2020-07-20 14:05:48,547 INFO L168 Benchmark]: RCFGBuilder took 1352.70 ms. Allocated memory was 206.6 MB in the beginning and 239.1 MB in the end (delta: 32.5 MB). Free memory was 168.0 MB in the beginning and 180.5 MB in the end (delta: -12.5 MB). Peak memory consumption was 82.0 MB. Max. memory is 7.1 GB. [2020-07-20 14:05:48,547 INFO L168 Benchmark]: TraceAbstraction took 12323.78 ms. Allocated memory was 239.1 MB in the beginning and 399.0 MB in the end (delta: 159.9 MB). Free memory was 180.5 MB in the beginning and 88.4 MB in the end (delta: 92.1 MB). Peak memory consumption was 254.5 MB. Max. memory is 7.1 GB. [2020-07-20 14:05:48,552 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 775.50 ms. Allocated memory was 138.9 MB in the beginning and 206.6 MB in the end (delta: 67.6 MB). Free memory was 101.4 MB in the beginning and 172.8 MB in the end (delta: -71.4 MB). Peak memory consumption was 36.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.00 ms. Allocated memory is still 206.6 MB. Free memory was 172.8 MB in the beginning and 168.0 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1352.70 ms. Allocated memory was 206.6 MB in the beginning and 239.1 MB in the end (delta: 32.5 MB). Free memory was 168.0 MB in the beginning and 180.5 MB in the end (delta: -12.5 MB). Peak memory consumption was 82.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12323.78 ms. Allocated memory was 239.1 MB in the beginning and 399.0 MB in the end (delta: 159.9 MB). Free memory was 180.5 MB in the beginning and 88.4 MB in the end (delta: 92.1 MB). Peak memory consumption was 254.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 431]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 583]: Loop Invariant Derived loop invariant: (((((((((((a17 <= 0 && a16 <= 5) || (1 == a20 && a16 <= 4)) || !(1 == \old(a20))) || !(15 <= \old(a8))) || (1 == a17 && ((1 == a7 && a16 <= 5) || (1 == a7 && 1 == a20)))) || !(\old(a16) <= 5)) || !(1 == \old(a17))) || !(5 <= \old(a16))) || (1 == a17 && 1 == a20)) || (a17 <= 0 && ((1 == a7 && a16 <= 5) || (1 == a7 && 1 == a20)))) || (a17 <= 0 && 15 <= a8)) || (15 <= a8 && 1 == a17) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.2s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 6.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 632 SDtfs, 1396 SDslu, 184 SDs, 0 SdLazy, 3763 SolverSat, 769 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1279 GetRequests, 1252 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2750occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 775 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 98 PreInvPairs, 152 NumberOfFragments, 518 HoareAnnotationTreeSize, 98 FomulaSimplifications, 5840 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 7 FomulaSimplificationsInter, 1506 FormulaSimplificationTreeSizeReductionInter, 1.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 973 NumberOfCodeBlocks, 973 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 1265 ConstructedInterpolants, 0 QuantifiedInterpolants, 394323 SizeOfPredicates, 10 NumberOfNonLiveVariables, 3007 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 373/381 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...