/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -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 [2020-07-21 20:07:37,705 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-21 20:07:37,727 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 20:07:37,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 20:07:37,731 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 20:07:37,741 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 20:07:37,746 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 20:07:37,749 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 20:07:37,750 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 20:07:37,751 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 20:07:37,752 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 20:07:37,753 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 20:07:37,755 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 20:07:37,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 20:07:37,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 20:07:37,759 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 20:07:37,760 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 20:07:37,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 20:07:37,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 20:07:37,773 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 20:07:37,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 20:07:37,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 20:07:37,778 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 20:07:37,792 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 20:07:37,822 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 20:07:37,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 20:07:37,831 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 20:07:37,832 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 20:07:37,832 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 20:07:37,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 20:07:37,832 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 20:07:37,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 20:07:37,833 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 20:07:37,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 20:07:37,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 20:07:37,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 20:07:37,835 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 20:07:37,835 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 20:07:37,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 20:07:37,836 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 20:07:37,836 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 20:07:37,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 20:07:37,836 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 20:07:37,836 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 20:07:37,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 20:07:37,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 20:07:37,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 20:07:37,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 20:07:37,837 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 20:07:37,838 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 20:07:37,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:07:37,838 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 20:07:37,838 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 20:07:37,838 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 20:07:38,156 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 20:07:38,173 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 20:07:38,176 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 20:07:38,179 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 20:07:38,179 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 20:07:38,180 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label41.c [2020-07-21 20:07:38,257 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e418da6cf/d76f6e282d95434a9c4291ed2cbc168d/FLAGb2f96a1b2 [2020-07-21 20:07:38,831 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 20:07:38,832 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label41.c [2020-07-21 20:07:38,855 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e418da6cf/d76f6e282d95434a9c4291ed2cbc168d/FLAGb2f96a1b2 [2020-07-21 20:07:39,082 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e418da6cf/d76f6e282d95434a9c4291ed2cbc168d [2020-07-21 20:07:39,091 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 20:07:39,093 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 20:07:39,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 20:07:39,095 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 20:07:39,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 20:07:39,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:07:39" (1/1) ... [2020-07-21 20:07:39,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b8f7a24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:39, skipping insertion in model container [2020-07-21 20:07:39,102 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:07:39" (1/1) ... [2020-07-21 20:07:39,110 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 20:07:39,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 20:07:39,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 20:07:39,589 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 20:07:39,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 20:07:39,865 INFO L208 MainTranslator]: Completed translation [2020-07-21 20:07:39,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:39 WrapperNode [2020-07-21 20:07:39,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 20:07:39,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 20:07:39,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 20:07:39,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 20:07:39,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:39" (1/1) ... [2020-07-21 20:07:39,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:39" (1/1) ... [2020-07-21 20:07:39,923 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:39" (1/1) ... [2020-07-21 20:07:39,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:39" (1/1) ... [2020-07-21 20:07:39,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:39" (1/1) ... [2020-07-21 20:07:39,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:39" (1/1) ... [2020-07-21 20:07:40,006 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:39" (1/1) ... [2020-07-21 20:07:40,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 20:07:40,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 20:07:40,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 20:07:40,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 20:07:40,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 20:07:40,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 20:07:40,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 20:07:40,083 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 20:07:40,083 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 20:07:40,084 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 20:07:40,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 20:07:40,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 20:07:40,084 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 20:07:40,084 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 20:07:40,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 20:07:40,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 20:07:41,305 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 20:07:41,305 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 20:07:41,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:07:41 BoogieIcfgContainer [2020-07-21 20:07:41,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 20:07:41,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 20:07:41,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 20:07:41,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 20:07:41,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:07:39" (1/3) ... [2020-07-21 20:07:41,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1719b5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:07:41, skipping insertion in model container [2020-07-21 20:07:41,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:39" (2/3) ... [2020-07-21 20:07:41,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1719b5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:07:41, skipping insertion in model container [2020-07-21 20:07:41,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:07:41" (3/3) ... [2020-07-21 20:07:41,320 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label41.c [2020-07-21 20:07:41,331 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 20:07:41,339 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 20:07:41,354 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 20:07:41,381 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 20:07:41,381 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 20:07:41,381 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 20:07:41,381 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 20:07:41,382 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 20:07:41,382 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 20:07:41,382 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 20:07:41,382 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 20:07:41,406 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-07-21 20:07:41,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-07-21 20:07:41,418 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:07:41,419 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] [2020-07-21 20:07:41,420 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:07:41,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:07:41,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1692915649, now seen corresponding path program 1 times [2020-07-21 20:07:41,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:07:41,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110355315] [2020-07-21 20:07:41,437 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:07:41,617 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:07:41,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:07:41,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 20:07:41,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:07:41,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:07:41,729 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:07:41,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110355315] [2020-07-21 20:07:41,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:07:41,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 20:07:41,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129919802] [2020-07-21 20:07:41,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 20:07:41,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:07:41,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 20:07:41,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 20:07:41,763 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 3 states. [2020-07-21 20:07:42,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:07:42,701 INFO L93 Difference]: Finished difference Result 547 states and 938 transitions. [2020-07-21 20:07:42,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 20:07:42,705 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-07-21 20:07:42,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:07:42,734 INFO L225 Difference]: With dead ends: 547 [2020-07-21 20:07:42,735 INFO L226 Difference]: Without dead ends: 278 [2020-07-21 20:07:42,748 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 [2020-07-21 20:07:42,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-07-21 20:07:42,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2020-07-21 20:07:42,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-07-21 20:07:42,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 400 transitions. [2020-07-21 20:07:42,866 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 400 transitions. Word has length 91 [2020-07-21 20:07:42,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:07:42,868 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 400 transitions. [2020-07-21 20:07:42,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 20:07:42,868 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 400 transitions. [2020-07-21 20:07:42,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-07-21 20:07:42,881 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:07:42,882 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] [2020-07-21 20:07:43,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:07:43,083 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:07:43,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:07:43,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1768869960, now seen corresponding path program 1 times [2020-07-21 20:07:43,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:07:43,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487415527] [2020-07-21 20:07:43,085 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:07:43,193 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:07:43,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:07:43,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 20:07:43,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:07:43,241 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:07:43,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:07:43,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487415527] [2020-07-21 20:07:43,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:07:43,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 20:07:43,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358216021] [2020-07-21 20:07:43,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 20:07:43,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:07:43,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 20:07:43,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 20:07:43,245 INFO L87 Difference]: Start difference. First operand 278 states and 400 transitions. Second operand 5 states. [2020-07-21 20:07:44,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:07:44,082 INFO L93 Difference]: Finished difference Result 701 states and 1021 transitions. [2020-07-21 20:07:44,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 20:07:44,084 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-07-21 20:07:44,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:07:44,089 INFO L225 Difference]: With dead ends: 701 [2020-07-21 20:07:44,089 INFO L226 Difference]: Without dead ends: 429 [2020-07-21 20:07:44,091 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 [2020-07-21 20:07:44,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-07-21 20:07:44,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 417. [2020-07-21 20:07:44,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-07-21 20:07:44,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 585 transitions. [2020-07-21 20:07:44,124 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 585 transitions. Word has length 101 [2020-07-21 20:07:44,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:07:44,125 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 585 transitions. [2020-07-21 20:07:44,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 20:07:44,125 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 585 transitions. [2020-07-21 20:07:44,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-07-21 20:07:44,127 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:07:44,128 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] [2020-07-21 20:07:44,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:07:44,339 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:07:44,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:07:44,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1027824070, now seen corresponding path program 1 times [2020-07-21 20:07:44,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:07:44,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557498395] [2020-07-21 20:07:44,341 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:07:44,462 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:07:44,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:07:44,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 20:07:44,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:07:44,588 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:07:44,588 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:07:44,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557498395] [2020-07-21 20:07:44,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:07:44,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 20:07:44,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527431984] [2020-07-21 20:07:44,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 20:07:44,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:07:44,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 20:07:44,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 20:07:44,603 INFO L87 Difference]: Start difference. First operand 417 states and 585 transitions. Second operand 3 states. [2020-07-21 20:07:45,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:07:45,207 INFO L93 Difference]: Finished difference Result 1235 states and 1769 transitions. [2020-07-21 20:07:45,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 20:07:45,208 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2020-07-21 20:07:45,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:07:45,215 INFO L225 Difference]: With dead ends: 1235 [2020-07-21 20:07:45,215 INFO L226 Difference]: Without dead ends: 824 [2020-07-21 20:07:45,217 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 [2020-07-21 20:07:45,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2020-07-21 20:07:45,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 689. [2020-07-21 20:07:45,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 689 states. [2020-07-21 20:07:45,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 919 transitions. [2020-07-21 20:07:45,263 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 919 transitions. Word has length 102 [2020-07-21 20:07:45,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:07:45,264 INFO L479 AbstractCegarLoop]: Abstraction has 689 states and 919 transitions. [2020-07-21 20:07:45,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 20:07:45,264 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 919 transitions. [2020-07-21 20:07:45,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-07-21 20:07:45,266 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:07:45,267 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] [2020-07-21 20:07:45,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:07:45,480 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:07:45,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:07:45,481 INFO L82 PathProgramCache]: Analyzing trace with hash -2011229172, now seen corresponding path program 1 times [2020-07-21 20:07:45,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:07:45,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038852594] [2020-07-21 20:07:45,482 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:07:45,600 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:07:45,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:07:45,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 20:07:45,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:07:45,637 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:07:45,637 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:07:45,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038852594] [2020-07-21 20:07:45,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:07:45,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 20:07:45,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664272228] [2020-07-21 20:07:45,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 20:07:45,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:07:45,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 20:07:45,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 20:07:45,640 INFO L87 Difference]: Start difference. First operand 689 states and 919 transitions. Second operand 3 states. [2020-07-21 20:07:46,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:07:46,270 INFO L93 Difference]: Finished difference Result 1914 states and 2622 transitions. [2020-07-21 20:07:46,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 20:07:46,271 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-07-21 20:07:46,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:07:46,279 INFO L225 Difference]: With dead ends: 1914 [2020-07-21 20:07:46,279 INFO L226 Difference]: Without dead ends: 1231 [2020-07-21 20:07:46,281 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 [2020-07-21 20:07:46,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2020-07-21 20:07:46,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1096. [2020-07-21 20:07:46,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1096 states. [2020-07-21 20:07:46,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1096 states to 1096 states and 1474 transitions. [2020-07-21 20:07:46,329 INFO L78 Accepts]: Start accepts. Automaton has 1096 states and 1474 transitions. Word has length 103 [2020-07-21 20:07:46,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:07:46,330 INFO L479 AbstractCegarLoop]: Abstraction has 1096 states and 1474 transitions. [2020-07-21 20:07:46,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 20:07:46,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1096 states and 1474 transitions. [2020-07-21 20:07:46,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-07-21 20:07:46,333 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:07:46,334 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] [2020-07-21 20:07:46,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:07:46,548 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:07:46,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:07:46,549 INFO L82 PathProgramCache]: Analyzing trace with hash 2004252269, now seen corresponding path program 1 times [2020-07-21 20:07:46,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:07:46,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185034029] [2020-07-21 20:07:46,551 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:07:46,651 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:07:46,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:07:46,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 20:07:46,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:07:46,689 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-07-21 20:07:46,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:07:46,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185034029] [2020-07-21 20:07:46,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:07:46,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 20:07:46,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541095020] [2020-07-21 20:07:46,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 20:07:46,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:07:46,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 20:07:46,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 20:07:46,692 INFO L87 Difference]: Start difference. First operand 1096 states and 1474 transitions. Second operand 3 states. [2020-07-21 20:07:47,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:07:47,318 INFO L93 Difference]: Finished difference Result 2863 states and 3930 transitions. [2020-07-21 20:07:47,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 20:07:47,325 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 125 [2020-07-21 20:07:47,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:07:47,332 INFO L225 Difference]: With dead ends: 2863 [2020-07-21 20:07:47,333 INFO L226 Difference]: Without dead ends: 1773 [2020-07-21 20:07:47,336 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 [2020-07-21 20:07:47,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1773 states. [2020-07-21 20:07:47,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1773 to 1773. [2020-07-21 20:07:47,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1773 states. [2020-07-21 20:07:47,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1773 states to 1773 states and 2286 transitions. [2020-07-21 20:07:47,391 INFO L78 Accepts]: Start accepts. Automaton has 1773 states and 2286 transitions. Word has length 125 [2020-07-21 20:07:47,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:07:47,392 INFO L479 AbstractCegarLoop]: Abstraction has 1773 states and 2286 transitions. [2020-07-21 20:07:47,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 20:07:47,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1773 states and 2286 transitions. [2020-07-21 20:07:47,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-07-21 20:07:47,398 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:07:47,398 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] [2020-07-21 20:07:47,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:07:47,613 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:07:47,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:07:47,614 INFO L82 PathProgramCache]: Analyzing trace with hash 996009503, now seen corresponding path program 1 times [2020-07-21 20:07:47,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:07:47,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699245348] [2020-07-21 20:07:47,615 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:07:47,762 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:07:47,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:07:47,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 20:07:47,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:07:47,810 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:07:47,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 20:07:47,906 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:07:47,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699245348] [2020-07-21 20:07:47,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 20:07:47,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 20:07:47,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921908921] [2020-07-21 20:07:47,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 20:07:47,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:07:47,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 20:07:47,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 20:07:47,910 INFO L87 Difference]: Start difference. First operand 1773 states and 2286 transitions. Second operand 6 states. [2020-07-21 20:07:49,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:07:49,014 INFO L93 Difference]: Finished difference Result 3918 states and 5288 transitions. [2020-07-21 20:07:49,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 20:07:49,017 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2020-07-21 20:07:49,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:07:49,033 INFO L225 Difference]: With dead ends: 3918 [2020-07-21 20:07:49,033 INFO L226 Difference]: Without dead ends: 2151 [2020-07-21 20:07:49,042 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 [2020-07-21 20:07:49,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2151 states. [2020-07-21 20:07:49,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2151 to 1793. [2020-07-21 20:07:49,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1793 states. [2020-07-21 20:07:49,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 2221 transitions. [2020-07-21 20:07:49,128 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 2221 transitions. Word has length 145 [2020-07-21 20:07:49,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:07:49,129 INFO L479 AbstractCegarLoop]: Abstraction has 1793 states and 2221 transitions. [2020-07-21 20:07:49,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 20:07:49,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 2221 transitions. [2020-07-21 20:07:49,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-07-21 20:07:49,135 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:07:49,135 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] [2020-07-21 20:07:49,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:07:49,351 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:07:49,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:07:49,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1157453929, now seen corresponding path program 1 times [2020-07-21 20:07:49,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:07:49,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229380818] [2020-07-21 20:07:49,352 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:07:49,471 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:07:49,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:07:49,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 20:07:49,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:07:49,511 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-21 20:07:49,512 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:07:49,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229380818] [2020-07-21 20:07:49,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:07:49,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 20:07:49,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123626703] [2020-07-21 20:07:49,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 20:07:49,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:07:49,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 20:07:49,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 20:07:49,514 INFO L87 Difference]: Start difference. First operand 1793 states and 2221 transitions. Second operand 3 states. [2020-07-21 20:07:50,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:07:50,129 INFO L93 Difference]: Finished difference Result 4672 states and 5904 transitions. [2020-07-21 20:07:50,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 20:07:50,129 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2020-07-21 20:07:50,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:07:50,144 INFO L225 Difference]: With dead ends: 4672 [2020-07-21 20:07:50,145 INFO L226 Difference]: Without dead ends: 2885 [2020-07-21 20:07:50,150 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 [2020-07-21 20:07:50,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2885 states. [2020-07-21 20:07:50,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2885 to 2750. [2020-07-21 20:07:50,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2750 states. [2020-07-21 20:07:50,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2750 states to 2750 states and 3404 transitions. [2020-07-21 20:07:50,225 INFO L78 Accepts]: Start accepts. Automaton has 2750 states and 3404 transitions. Word has length 149 [2020-07-21 20:07:50,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:07:50,226 INFO L479 AbstractCegarLoop]: Abstraction has 2750 states and 3404 transitions. [2020-07-21 20:07:50,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 20:07:50,226 INFO L276 IsEmpty]: Start isEmpty. Operand 2750 states and 3404 transitions. [2020-07-21 20:07:50,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-07-21 20:07:50,234 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:07:50,235 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] [2020-07-21 20:07:50,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:07:50,450 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:07:50,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:07:50,450 INFO L82 PathProgramCache]: Analyzing trace with hash 152592045, now seen corresponding path program 1 times [2020-07-21 20:07:50,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:07:50,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241758939] [2020-07-21 20:07:50,451 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:07:50,564 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:07:50,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:07:50,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 20:07:50,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:07:50,620 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:07:50,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 20:07:50,703 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:07:50,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1241758939] [2020-07-21 20:07:50,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 20:07:50,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 20:07:50,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983632702] [2020-07-21 20:07:50,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 20:07:50,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:07:50,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 20:07:50,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-21 20:07:50,706 INFO L87 Difference]: Start difference. First operand 2750 states and 3404 transitions. Second operand 7 states. [2020-07-21 20:07:51,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:07:51,526 INFO L93 Difference]: Finished difference Result 5550 states and 6987 transitions. [2020-07-21 20:07:51,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 20:07:51,527 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 157 [2020-07-21 20:07:51,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:07:51,528 INFO L225 Difference]: With dead ends: 5550 [2020-07-21 20:07:51,528 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 20:07:51,542 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 [2020-07-21 20:07:51,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 20:07:51,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 20:07:51,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 20:07:51,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 20:07:51,546 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 157 [2020-07-21 20:07:51,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:07:51,547 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 20:07:51,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 20:07:51,547 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 20:07:51,547 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 20:07:51,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:07:51,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 20:07:53,016 WARN L193 SmtUtils]: Spent 790.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 67 [2020-07-21 20:07:53,344 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2020-07-21 20:07:53,642 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2020-07-21 20:07:53,647 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 20:07:53,648 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)|)) [2020-07-21 20:07:53,648 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 20:07:53,648 INFO L268 CegarLoopResult]: For program point L333(lines 333 390) no Hoare annotation was computed. [2020-07-21 20:07:53,648 INFO L268 CegarLoopResult]: For program point L102(lines 102 390) no Hoare annotation was computed. [2020-07-21 20:07:53,648 INFO L268 CegarLoopResult]: For program point L565-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,648 INFO L268 CegarLoopResult]: For program point L532-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,649 INFO L268 CegarLoopResult]: For program point L499-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,649 INFO L268 CegarLoopResult]: For program point L466-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,649 INFO L268 CegarLoopResult]: For program point L433-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,649 INFO L268 CegarLoopResult]: For program point L400-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,649 INFO L268 CegarLoopResult]: For program point L268(lines 268 390) no Hoare annotation was computed. [2020-07-21 20:07:53,649 INFO L268 CegarLoopResult]: For program point L136(lines 136 390) no Hoare annotation was computed. [2020-07-21 20:07:53,649 INFO L268 CegarLoopResult]: For program point L566(line 566) no Hoare annotation was computed. [2020-07-21 20:07:53,650 INFO L268 CegarLoopResult]: For program point L533(line 533) no Hoare annotation was computed. [2020-07-21 20:07:53,650 INFO L268 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2020-07-21 20:07:53,650 INFO L268 CegarLoopResult]: For program point L467(line 467) no Hoare annotation was computed. [2020-07-21 20:07:53,650 INFO L268 CegarLoopResult]: For program point L434(line 434) no Hoare annotation was computed. [2020-07-21 20:07:53,650 INFO L268 CegarLoopResult]: For program point L401(line 401) no Hoare annotation was computed. [2020-07-21 20:07:53,650 INFO L268 CegarLoopResult]: For program point L203(lines 203 390) no Hoare annotation was computed. [2020-07-21 20:07:53,650 INFO L268 CegarLoopResult]: For program point L72(lines 72 390) no Hoare annotation was computed. [2020-07-21 20:07:53,650 INFO L268 CegarLoopResult]: For program point L568-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,651 INFO L268 CegarLoopResult]: For program point L535-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,651 INFO L268 CegarLoopResult]: For program point L502-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,651 INFO L268 CegarLoopResult]: For program point L469-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,651 INFO L268 CegarLoopResult]: For program point L436-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,651 INFO L268 CegarLoopResult]: For program point L403-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,651 INFO L268 CegarLoopResult]: For program point L337(lines 337 390) no Hoare annotation was computed. [2020-07-21 20:07:53,651 INFO L268 CegarLoopResult]: For program point L238(lines 238 390) no Hoare annotation was computed. [2020-07-21 20:07:53,652 INFO L268 CegarLoopResult]: For program point L569(line 569) no Hoare annotation was computed. [2020-07-21 20:07:53,652 INFO L268 CegarLoopResult]: For program point L536(line 536) no Hoare annotation was computed. [2020-07-21 20:07:53,652 INFO L268 CegarLoopResult]: For program point L503(line 503) no Hoare annotation was computed. [2020-07-21 20:07:53,652 INFO L268 CegarLoopResult]: For program point L470(line 470) no Hoare annotation was computed. [2020-07-21 20:07:53,652 INFO L268 CegarLoopResult]: For program point L437(line 437) no Hoare annotation was computed. [2020-07-21 20:07:53,652 INFO L268 CegarLoopResult]: For program point L404(line 404) no Hoare annotation was computed. [2020-07-21 20:07:53,652 INFO L268 CegarLoopResult]: For program point L173(lines 173 390) no Hoare annotation was computed. [2020-07-21 20:07:53,652 INFO L268 CegarLoopResult]: For program point L140(lines 140 390) no Hoare annotation was computed. [2020-07-21 20:07:53,653 INFO L268 CegarLoopResult]: For program point L372(lines 372 390) no Hoare annotation was computed. [2020-07-21 20:07:53,653 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 431) no Hoare annotation was computed. [2020-07-21 20:07:53,653 INFO L268 CegarLoopResult]: For program point L306(lines 306 390) no Hoare annotation was computed. [2020-07-21 20:07:53,653 INFO L268 CegarLoopResult]: For program point L273(lines 273 390) no Hoare annotation was computed. [2020-07-21 20:07:53,653 INFO L268 CegarLoopResult]: For program point L108(lines 108 390) no Hoare annotation was computed. [2020-07-21 20:07:53,653 INFO L268 CegarLoopResult]: For program point L571-1(lines 571 573) no Hoare annotation was computed. [2020-07-21 20:07:53,654 INFO L268 CegarLoopResult]: For program point L538-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,654 INFO L268 CegarLoopResult]: For program point L505-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,654 INFO L268 CegarLoopResult]: For program point L472-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,654 INFO L268 CegarLoopResult]: For program point L439-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,654 INFO L268 CegarLoopResult]: For program point L406-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,654 INFO L268 CegarLoopResult]: For program point L208(lines 208 390) no Hoare annotation was computed. [2020-07-21 20:07:53,654 INFO L268 CegarLoopResult]: For program point L43(lines 43 390) no Hoare annotation was computed. [2020-07-21 20:07:53,655 INFO L268 CegarLoopResult]: For program point L572(line 572) no Hoare annotation was computed. [2020-07-21 20:07:53,655 INFO L268 CegarLoopResult]: For program point L539(line 539) no Hoare annotation was computed. [2020-07-21 20:07:53,655 INFO L268 CegarLoopResult]: For program point L506(line 506) no Hoare annotation was computed. [2020-07-21 20:07:53,655 INFO L268 CegarLoopResult]: For program point L473(line 473) no Hoare annotation was computed. [2020-07-21 20:07:53,655 INFO L268 CegarLoopResult]: For program point L440(line 440) no Hoare annotation was computed. [2020-07-21 20:07:53,655 INFO L268 CegarLoopResult]: For program point L407(line 407) no Hoare annotation was computed. [2020-07-21 20:07:53,655 INFO L268 CegarLoopResult]: For program point L144(lines 144 390) no Hoare annotation was computed. [2020-07-21 20:07:53,655 INFO L268 CegarLoopResult]: For program point L541-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,656 INFO L268 CegarLoopResult]: For program point L508-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,656 INFO L268 CegarLoopResult]: For program point L475-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,656 INFO L268 CegarLoopResult]: For program point L442-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,656 INFO L268 CegarLoopResult]: For program point L409-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,656 INFO L268 CegarLoopResult]: For program point L178(lines 178 390) no Hoare annotation was computed. [2020-07-21 20:07:53,656 INFO L268 CegarLoopResult]: For program point L542(line 542) no Hoare annotation was computed. [2020-07-21 20:07:53,656 INFO L268 CegarLoopResult]: For program point L509(line 509) no Hoare annotation was computed. [2020-07-21 20:07:53,656 INFO L268 CegarLoopResult]: For program point L476(line 476) no Hoare annotation was computed. [2020-07-21 20:07:53,657 INFO L268 CegarLoopResult]: For program point L443(line 443) no Hoare annotation was computed. [2020-07-21 20:07:53,657 INFO L268 CegarLoopResult]: For program point L410(line 410) no Hoare annotation was computed. [2020-07-21 20:07:53,657 INFO L268 CegarLoopResult]: For program point L377(lines 377 390) no Hoare annotation was computed. [2020-07-21 20:07:53,657 INFO L268 CegarLoopResult]: For program point L278(lines 278 390) no Hoare annotation was computed. [2020-07-21 20:07:53,657 INFO L268 CegarLoopResult]: For program point L245(lines 245 390) no Hoare annotation was computed. [2020-07-21 20:07:53,657 INFO L268 CegarLoopResult]: For program point L80(lines 80 390) no Hoare annotation was computed. [2020-07-21 20:07:53,657 INFO L268 CegarLoopResult]: For program point L345(lines 345 390) no Hoare annotation was computed. [2020-07-21 20:07:53,657 INFO L268 CegarLoopResult]: For program point L312(lines 312 390) no Hoare annotation was computed. [2020-07-21 20:07:53,658 INFO L268 CegarLoopResult]: For program point L114(lines 114 390) no Hoare annotation was computed. [2020-07-21 20:07:53,658 INFO L268 CegarLoopResult]: For program point L544-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,658 INFO L268 CegarLoopResult]: For program point L511-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,658 INFO L268 CegarLoopResult]: For program point L478-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,658 INFO L268 CegarLoopResult]: For program point L445-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,658 INFO L268 CegarLoopResult]: For program point L412-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,658 INFO L268 CegarLoopResult]: For program point L214(lines 214 390) no Hoare annotation was computed. [2020-07-21 20:07:53,659 INFO L268 CegarLoopResult]: For program point L148(lines 148 390) no Hoare annotation was computed. [2020-07-21 20:07:53,659 INFO L268 CegarLoopResult]: For program point L49(lines 49 390) no Hoare annotation was computed. [2020-07-21 20:07:53,659 INFO L268 CegarLoopResult]: For program point L545(line 545) no Hoare annotation was computed. [2020-07-21 20:07:53,659 INFO L268 CegarLoopResult]: For program point L512(line 512) no Hoare annotation was computed. [2020-07-21 20:07:53,659 INFO L268 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2020-07-21 20:07:53,659 INFO L268 CegarLoopResult]: For program point L446(line 446) no Hoare annotation was computed. [2020-07-21 20:07:53,659 INFO L268 CegarLoopResult]: For program point L413(line 413) no Hoare annotation was computed. [2020-07-21 20:07:53,659 INFO L268 CegarLoopResult]: For program point L84(lines 84 390) no Hoare annotation was computed. [2020-07-21 20:07:53,660 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,660 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,660 INFO L268 CegarLoopResult]: For program point L547-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,660 INFO L268 CegarLoopResult]: For program point L514-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,660 INFO L268 CegarLoopResult]: For program point L481-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,660 INFO L268 CegarLoopResult]: For program point L448-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,660 INFO L268 CegarLoopResult]: For program point L382(lines 382 390) no Hoare annotation was computed. [2020-07-21 20:07:53,661 INFO L268 CegarLoopResult]: For program point L415-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,661 INFO L268 CegarLoopResult]: For program point L316(lines 316 390) no Hoare annotation was computed. [2020-07-21 20:07:53,661 INFO L268 CegarLoopResult]: For program point L250(lines 250 390) no Hoare annotation was computed. [2020-07-21 20:07:53,661 INFO L268 CegarLoopResult]: For program point L548(line 548) no Hoare annotation was computed. [2020-07-21 20:07:53,661 INFO L268 CegarLoopResult]: For program point L515(line 515) no Hoare annotation was computed. [2020-07-21 20:07:53,661 INFO L268 CegarLoopResult]: For program point L482(line 482) no Hoare annotation was computed. [2020-07-21 20:07:53,661 INFO L268 CegarLoopResult]: For program point L449(line 449) no Hoare annotation was computed. [2020-07-21 20:07:53,661 INFO L268 CegarLoopResult]: For program point L416(line 416) no Hoare annotation was computed. [2020-07-21 20:07:53,662 INFO L268 CegarLoopResult]: For program point L218(lines 218 390) no Hoare annotation was computed. [2020-07-21 20:07:53,662 INFO L268 CegarLoopResult]: For program point L152(lines 152 390) no Hoare annotation was computed. [2020-07-21 20:07:53,662 INFO L268 CegarLoopResult]: For program point L119(lines 119 390) no Hoare annotation was computed. [2020-07-21 20:07:53,662 INFO L268 CegarLoopResult]: For program point L318(lines 318 390) no Hoare annotation was computed. [2020-07-21 20:07:53,662 INFO L268 CegarLoopResult]: For program point L186(lines 186 390) no Hoare annotation was computed. [2020-07-21 20:07:53,662 INFO L268 CegarLoopResult]: For program point L54(lines 54 390) no Hoare annotation was computed. [2020-07-21 20:07:53,662 INFO L268 CegarLoopResult]: For program point L550-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,662 INFO L268 CegarLoopResult]: For program point L517-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,663 INFO L268 CegarLoopResult]: For program point L484-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,663 INFO L268 CegarLoopResult]: For program point L451-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,663 INFO L268 CegarLoopResult]: For program point L418-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,663 INFO L268 CegarLoopResult]: For program point L286(lines 286 390) no Hoare annotation was computed. [2020-07-21 20:07:53,663 INFO L268 CegarLoopResult]: For program point L551(line 551) no Hoare annotation was computed. [2020-07-21 20:07:53,663 INFO L268 CegarLoopResult]: For program point L518(line 518) no Hoare annotation was computed. [2020-07-21 20:07:53,663 INFO L268 CegarLoopResult]: For program point L485(line 485) no Hoare annotation was computed. [2020-07-21 20:07:53,664 INFO L268 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2020-07-21 20:07:53,664 INFO L268 CegarLoopResult]: For program point L419(line 419) no Hoare annotation was computed. [2020-07-21 20:07:53,664 INFO L268 CegarLoopResult]: For program point L353(lines 353 390) no Hoare annotation was computed. [2020-07-21 20:07:53,664 INFO L268 CegarLoopResult]: For program point L189(lines 189 390) no Hoare annotation was computed. [2020-07-21 20:07:53,664 INFO L268 CegarLoopResult]: For program point L553-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,664 INFO L268 CegarLoopResult]: For program point L520-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,664 INFO L268 CegarLoopResult]: For program point L487-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,664 INFO L268 CegarLoopResult]: For program point L454-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,665 INFO L268 CegarLoopResult]: For program point L421-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,665 INFO L268 CegarLoopResult]: For program point L355(lines 355 390) no Hoare annotation was computed. [2020-07-21 20:07:53,665 INFO L268 CegarLoopResult]: For program point L256(lines 256 390) no Hoare annotation was computed. [2020-07-21 20:07:53,665 INFO L268 CegarLoopResult]: For program point L223(lines 223 390) no Hoare annotation was computed. [2020-07-21 20:07:53,665 INFO L268 CegarLoopResult]: For program point L124(lines 124 390) no Hoare annotation was computed. [2020-07-21 20:07:53,665 INFO L268 CegarLoopResult]: For program point L554(line 554) no Hoare annotation was computed. [2020-07-21 20:07:53,665 INFO L268 CegarLoopResult]: For program point L521(line 521) no Hoare annotation was computed. [2020-07-21 20:07:53,666 INFO L268 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2020-07-21 20:07:53,666 INFO L268 CegarLoopResult]: For program point L455(line 455) no Hoare annotation was computed. [2020-07-21 20:07:53,666 INFO L268 CegarLoopResult]: For program point L422(line 422) no Hoare annotation was computed. [2020-07-21 20:07:53,666 INFO L268 CegarLoopResult]: For program point L92(lines 92 390) no Hoare annotation was computed. [2020-07-21 20:07:53,666 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)))) [2020-07-21 20:07:53,667 INFO L268 CegarLoopResult]: For program point L324(lines 324 390) no Hoare annotation was computed. [2020-07-21 20:07:53,667 INFO L268 CegarLoopResult]: For program point L556-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,667 INFO L268 CegarLoopResult]: For program point L523-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,667 INFO L268 CegarLoopResult]: For program point L490-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,667 INFO L268 CegarLoopResult]: For program point L457-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,667 INFO L268 CegarLoopResult]: For program point L391(lines 391 393) no Hoare annotation was computed. [2020-07-21 20:07:53,667 INFO L268 CegarLoopResult]: For program point L424-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,668 INFO L268 CegarLoopResult]: For program point L391-2(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,668 INFO L268 CegarLoopResult]: For program point L292(lines 292 390) no Hoare annotation was computed. [2020-07-21 20:07:53,668 INFO L268 CegarLoopResult]: For program point L160(lines 160 390) no Hoare annotation was computed. [2020-07-21 20:07:53,668 INFO L268 CegarLoopResult]: For program point L557(line 557) no Hoare annotation was computed. [2020-07-21 20:07:53,668 INFO L268 CegarLoopResult]: For program point L524(line 524) no Hoare annotation was computed. [2020-07-21 20:07:53,668 INFO L268 CegarLoopResult]: For program point L491(line 491) no Hoare annotation was computed. [2020-07-21 20:07:53,668 INFO L268 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2020-07-21 20:07:53,668 INFO L268 CegarLoopResult]: For program point L425(line 425) no Hoare annotation was computed. [2020-07-21 20:07:53,669 INFO L268 CegarLoopResult]: For program point L392(line 392) no Hoare annotation was computed. [2020-07-21 20:07:53,669 INFO L268 CegarLoopResult]: For program point L194(lines 194 390) no Hoare annotation was computed. [2020-07-21 20:07:53,669 INFO L268 CegarLoopResult]: For program point L62(lines 62 390) no Hoare annotation was computed. [2020-07-21 20:07:53,669 INFO L268 CegarLoopResult]: For program point L261(lines 261 390) no Hoare annotation was computed. [2020-07-21 20:07:53,669 INFO L268 CegarLoopResult]: For program point L129(lines 129 390) no Hoare annotation was computed. [2020-07-21 20:07:53,669 INFO L268 CegarLoopResult]: For program point L559-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,669 INFO L268 CegarLoopResult]: For program point L526-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,669 INFO L268 CegarLoopResult]: For program point L493-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,670 INFO L268 CegarLoopResult]: For program point L460-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,670 INFO L268 CegarLoopResult]: For program point L427-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,670 INFO L268 CegarLoopResult]: For program point L361(lines 361 390) no Hoare annotation was computed. [2020-07-21 20:07:53,670 INFO L268 CegarLoopResult]: For program point L394-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,670 INFO L268 CegarLoopResult]: For program point L97(lines 97 390) no Hoare annotation was computed. [2020-07-21 20:07:53,670 INFO L268 CegarLoopResult]: For program point L31(lines 31 390) no Hoare annotation was computed. [2020-07-21 20:07:53,670 INFO L268 CegarLoopResult]: For program point L560(line 560) no Hoare annotation was computed. [2020-07-21 20:07:53,670 INFO L268 CegarLoopResult]: For program point L527(line 527) no Hoare annotation was computed. [2020-07-21 20:07:53,671 INFO L268 CegarLoopResult]: For program point L494(line 494) no Hoare annotation was computed. [2020-07-21 20:07:53,671 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-21 20:07:53,671 INFO L268 CegarLoopResult]: For program point L428(line 428) no Hoare annotation was computed. [2020-07-21 20:07:53,671 INFO L268 CegarLoopResult]: For program point L395(line 395) no Hoare annotation was computed. [2020-07-21 20:07:53,671 INFO L268 CegarLoopResult]: For program point L329(lines 329 390) no Hoare annotation was computed. [2020-07-21 20:07:53,671 INFO L268 CegarLoopResult]: For program point L197(lines 197 390) no Hoare annotation was computed. [2020-07-21 20:07:53,671 INFO L268 CegarLoopResult]: For program point L65(lines 65 390) no Hoare annotation was computed. [2020-07-21 20:07:53,672 INFO L268 CegarLoopResult]: For program point L363(lines 363 390) no Hoare annotation was computed. [2020-07-21 20:07:53,672 INFO L268 CegarLoopResult]: For program point L231(lines 231 390) no Hoare annotation was computed. [2020-07-21 20:07:53,672 INFO L268 CegarLoopResult]: For program point L165(lines 165 390) no Hoare annotation was computed. [2020-07-21 20:07:53,672 INFO L268 CegarLoopResult]: For program point L562-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,672 INFO L268 CegarLoopResult]: For program point L529-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,672 INFO L268 CegarLoopResult]: For program point L496-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,672 INFO L268 CegarLoopResult]: For program point L463-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,672 INFO L268 CegarLoopResult]: For program point L430-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,673 INFO L268 CegarLoopResult]: For program point L397-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 20:07:53,673 INFO L268 CegarLoopResult]: For program point L265(lines 265 390) no Hoare annotation was computed. [2020-07-21 20:07:53,673 INFO L268 CegarLoopResult]: For program point L563(line 563) no Hoare annotation was computed. [2020-07-21 20:07:53,673 INFO L268 CegarLoopResult]: For program point L530(line 530) no Hoare annotation was computed. [2020-07-21 20:07:53,673 INFO L268 CegarLoopResult]: For program point L497(line 497) no Hoare annotation was computed. [2020-07-21 20:07:53,673 INFO L268 CegarLoopResult]: For program point L464(line 464) no Hoare annotation was computed. [2020-07-21 20:07:53,673 INFO L268 CegarLoopResult]: For program point L431(line 431) no Hoare annotation was computed. [2020-07-21 20:07:53,673 INFO L268 CegarLoopResult]: For program point L398(line 398) no Hoare annotation was computed. [2020-07-21 20:07:53,673 INFO L268 CegarLoopResult]: For program point L365(lines 365 390) no Hoare annotation was computed. [2020-07-21 20:07:53,674 INFO L268 CegarLoopResult]: For program point L299(lines 299 390) no Hoare annotation was computed. [2020-07-21 20:07:53,674 INFO L268 CegarLoopResult]: For program point L35(lines 35 390) no Hoare annotation was computed. [2020-07-21 20:07:53,674 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 20:07:53,674 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)) [2020-07-21 20:07:53,674 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 20:07:53,674 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 20:07:53,675 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))) [2020-07-21 20:07:53,675 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 577 594) no Hoare annotation was computed. [2020-07-21 20:07:53,675 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)))) [2020-07-21 20:07:53,675 INFO L268 CegarLoopResult]: For program point L591-1(line 591) no Hoare annotation was computed. [2020-07-21 20:07:53,675 INFO L268 CegarLoopResult]: For program point L588(line 588) no Hoare annotation was computed. [2020-07-21 20:07:53,676 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)))) [2020-07-21 20:07:53,676 INFO L268 CegarLoopResult]: For program point L583-3(lines 577 594) no Hoare annotation was computed. [2020-07-21 20:07:53,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 08:07:53 BoogieIcfgContainer [2020-07-21 20:07:53,698 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 20:07:53,700 INFO L168 Benchmark]: Toolchain (without parser) took 14607.24 ms. Allocated memory was 137.4 MB in the beginning and 433.6 MB in the end (delta: 296.2 MB). Free memory was 99.0 MB in the beginning and 298.0 MB in the end (delta: -199.0 MB). Peak memory consumption was 262.7 MB. Max. memory is 7.1 GB. [2020-07-21 20:07:53,700 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 137.4 MB. Free memory is still 118.8 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 20:07:53,701 INFO L168 Benchmark]: CACSL2BoogieTranslator took 772.97 ms. Allocated memory was 137.4 MB in the beginning and 204.5 MB in the end (delta: 67.1 MB). Free memory was 99.0 MB in the beginning and 170.3 MB in the end (delta: -71.3 MB). Peak memory consumption was 35.8 MB. Max. memory is 7.1 GB. [2020-07-21 20:07:53,702 INFO L168 Benchmark]: Boogie Preprocessor took 149.17 ms. Allocated memory is still 204.5 MB. Free memory was 170.3 MB in the beginning and 166.2 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-07-21 20:07:53,703 INFO L168 Benchmark]: RCFGBuilder took 1287.97 ms. Allocated memory was 204.5 MB in the beginning and 235.9 MB in the end (delta: 31.5 MB). Free memory was 165.1 MB in the beginning and 180.2 MB in the end (delta: -15.1 MB). Peak memory consumption was 83.8 MB. Max. memory is 7.1 GB. [2020-07-21 20:07:53,703 INFO L168 Benchmark]: TraceAbstraction took 12385.16 ms. Allocated memory was 235.9 MB in the beginning and 433.6 MB in the end (delta: 197.7 MB). Free memory was 180.2 MB in the beginning and 298.0 MB in the end (delta: -117.8 MB). Peak memory consumption was 245.3 MB. Max. memory is 7.1 GB. [2020-07-21 20:07:53,707 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 137.4 MB. Free memory is still 118.8 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 772.97 ms. Allocated memory was 137.4 MB in the beginning and 204.5 MB in the end (delta: 67.1 MB). Free memory was 99.0 MB in the beginning and 170.3 MB in the end (delta: -71.3 MB). Peak memory consumption was 35.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 149.17 ms. Allocated memory is still 204.5 MB. Free memory was 170.3 MB in the beginning and 166.2 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1287.97 ms. Allocated memory was 204.5 MB in the beginning and 235.9 MB in the end (delta: 31.5 MB). Free memory was 165.1 MB in the beginning and 180.2 MB in the end (delta: -15.1 MB). Peak memory consumption was 83.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12385.16 ms. Allocated memory was 235.9 MB in the beginning and 433.6 MB in the end (delta: 197.7 MB). Free memory was 180.2 MB in the beginning and 298.0 MB in the end (delta: -117.8 MB). Peak memory consumption was 245.3 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: 10.3s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 6.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 632 SDtfs, 1396 SDslu, 184 SDs, 0 SdLazy, 3763 SolverSat, 769 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1279 GetRequests, 1252 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s 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, 0.3s HoareSimplificationTime, 7 FomulaSimplificationsInter, 1506 FormulaSimplificationTreeSizeReductionInter, 1.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 973 NumberOfCodeBlocks, 973 NumberOfCodeBlocksAsserted, 16 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...