/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 13:48:22,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 13:48:22,867 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 13:48:22,888 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 13:48:22,888 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 13:48:22,890 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 13:48:22,892 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 13:48:22,906 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 13:48:22,908 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 13:48:22,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 13:48:22,911 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 13:48:22,914 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 13:48:22,914 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 13:48:22,916 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 13:48:22,920 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 13:48:22,922 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 13:48:22,923 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 13:48:22,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 13:48:22,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 13:48:22,930 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 13:48:22,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 13:48:22,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 13:48:22,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 13:48:22,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 13:48:22,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 13:48:22,958 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 13:48:22,959 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 13:48:22,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 13:48:22,961 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 13:48:22,985 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 13:48:22,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 13:48:22,988 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 13:48:22,988 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 13:48:22,989 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 13:48:22,989 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 13:48:22,989 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 13:48:22,989 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 13:48:22,989 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 13:48:22,990 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 13:48:22,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 13:48:22,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 13:48:22,991 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 13:48:22,992 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 13:48:22,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 13:48:22,992 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 13:48:22,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 13:48:22,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 13:48:22,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 13:48:22,993 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 13:48:22,993 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 13:48:22,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 13:48:22,994 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 13:48:22,994 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 13:48:22,994 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 13:48:22,994 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 13:48:22,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:48:22,995 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 13:48:22,995 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 13:48:22,995 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 13:48:23,320 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 13:48:23,333 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 13:48:23,337 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 13:48:23,339 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 13:48:23,339 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 13:48:23,340 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label41.c [2020-07-21 13:48:23,409 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee387b756/d02015e1740b42ce826ed78864afb8a6/FLAG190b8dc41 [2020-07-21 13:48:23,953 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 13:48:23,954 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label41.c [2020-07-21 13:48:23,967 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee387b756/d02015e1740b42ce826ed78864afb8a6/FLAG190b8dc41 [2020-07-21 13:48:24,301 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee387b756/d02015e1740b42ce826ed78864afb8a6 [2020-07-21 13:48:24,312 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 13:48:24,316 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 13:48:24,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 13:48:24,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 13:48:24,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 13:48:24,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:48:24" (1/1) ... [2020-07-21 13:48:24,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d8e84bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:48:24, skipping insertion in model container [2020-07-21 13:48:24,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:48:24" (1/1) ... [2020-07-21 13:48:24,341 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 13:48:24,416 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 13:48:25,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 13:48:25,058 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 13:48:25,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 13:48:25,208 INFO L208 MainTranslator]: Completed translation [2020-07-21 13:48:25,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:48:25 WrapperNode [2020-07-21 13:48:25,209 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 13:48:25,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 13:48:25,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 13:48:25,211 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 13:48:25,228 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:48:25" (1/1) ... [2020-07-21 13:48:25,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:48:25" (1/1) ... [2020-07-21 13:48:25,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:48:25" (1/1) ... [2020-07-21 13:48:25,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:48:25" (1/1) ... [2020-07-21 13:48:25,296 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:48:25" (1/1) ... [2020-07-21 13:48:25,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:48:25" (1/1) ... [2020-07-21 13:48:25,322 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:48:25" (1/1) ... [2020-07-21 13:48:25,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 13:48:25,341 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 13:48:25,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 13:48:25,341 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 13:48:25,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:48:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 13:48:25,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 13:48:25,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 13:48:25,427 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 13:48:25,427 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 13:48:25,427 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 13:48:25,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 13:48:25,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 13:48:25,428 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 13:48:25,428 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 13:48:25,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 13:48:25,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 13:48:26,708 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 13:48:26,709 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 13:48:26,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:48:26 BoogieIcfgContainer [2020-07-21 13:48:26,715 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 13:48:26,717 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 13:48:26,717 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 13:48:26,721 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 13:48:26,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:48:24" (1/3) ... [2020-07-21 13:48:26,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eaa93da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:48:26, skipping insertion in model container [2020-07-21 13:48:26,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:48:25" (2/3) ... [2020-07-21 13:48:26,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eaa93da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:48:26, skipping insertion in model container [2020-07-21 13:48:26,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:48:26" (3/3) ... [2020-07-21 13:48:26,725 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label41.c [2020-07-21 13:48:26,736 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 13:48:26,745 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 13:48:26,760 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 13:48:26,788 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 13:48:26,788 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 13:48:26,788 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 13:48:26,788 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 13:48:26,788 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 13:48:26,789 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 13:48:26,789 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 13:48:26,789 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 13:48:26,813 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-07-21 13:48:26,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-07-21 13:48:26,825 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:48:26,826 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 13:48:26,827 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:48:26,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:48:26,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1692915649, now seen corresponding path program 1 times [2020-07-21 13:48:26,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:48:26,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324128284] [2020-07-21 13:48:26,844 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:48:27,053 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:48:27,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:48:27,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 13:48:27,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:48:27,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:48:27,151 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:48:27,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324128284] [2020-07-21 13:48:27,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:48:27,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:48:27,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899522961] [2020-07-21 13:48:27,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:48:27,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:48:27,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:48:27,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:48:27,181 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 3 states. [2020-07-21 13:48:28,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:48:28,106 INFO L93 Difference]: Finished difference Result 547 states and 938 transitions. [2020-07-21 13:48:28,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:48:28,111 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-07-21 13:48:28,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:48:28,140 INFO L225 Difference]: With dead ends: 547 [2020-07-21 13:48:28,140 INFO L226 Difference]: Without dead ends: 278 [2020-07-21 13:48:28,152 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 13:48:28,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-07-21 13:48:28,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2020-07-21 13:48:28,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-07-21 13:48:28,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 400 transitions. [2020-07-21 13:48:28,274 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 400 transitions. Word has length 91 [2020-07-21 13:48:28,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:48:28,276 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 400 transitions. [2020-07-21 13:48:28,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:48:28,277 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 400 transitions. [2020-07-21 13:48:28,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-07-21 13:48:28,290 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:48:28,290 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 13:48:28,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:48:28,504 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:48:28,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:48:28,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1768869960, now seen corresponding path program 1 times [2020-07-21 13:48:28,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:48:28,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941307559] [2020-07-21 13:48:28,505 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:48:28,611 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:48:28,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:48:28,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 13:48:28,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:48:28,658 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 13:48:28,658 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:48:28,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941307559] [2020-07-21 13:48:28,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:48:28,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 13:48:28,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808051956] [2020-07-21 13:48:28,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 13:48:28,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:48:28,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 13:48:28,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 13:48:28,662 INFO L87 Difference]: Start difference. First operand 278 states and 400 transitions. Second operand 5 states. [2020-07-21 13:48:29,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:48:29,547 INFO L93 Difference]: Finished difference Result 701 states and 1021 transitions. [2020-07-21 13:48:29,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 13:48:29,549 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-07-21 13:48:29,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:48:29,554 INFO L225 Difference]: With dead ends: 701 [2020-07-21 13:48:29,554 INFO L226 Difference]: Without dead ends: 429 [2020-07-21 13:48:29,556 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 13:48:29,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-07-21 13:48:29,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 417. [2020-07-21 13:48:29,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-07-21 13:48:29,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 585 transitions. [2020-07-21 13:48:29,588 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 585 transitions. Word has length 101 [2020-07-21 13:48:29,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:48:29,589 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 585 transitions. [2020-07-21 13:48:29,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 13:48:29,589 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 585 transitions. [2020-07-21 13:48:29,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-07-21 13:48:29,591 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:48:29,592 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 13:48:29,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:48:29,807 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:48:29,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:48:29,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1027824070, now seen corresponding path program 1 times [2020-07-21 13:48:29,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:48:29,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892360647] [2020-07-21 13:48:29,810 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:48:29,952 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:48:29,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:48:29,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 13:48:29,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:48:30,028 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 13:48:30,028 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:48:30,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892360647] [2020-07-21 13:48:30,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:48:30,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:48:30,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784545932] [2020-07-21 13:48:30,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:48:30,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:48:30,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:48:30,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:48:30,042 INFO L87 Difference]: Start difference. First operand 417 states and 585 transitions. Second operand 3 states. [2020-07-21 13:48:30,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:48:30,680 INFO L93 Difference]: Finished difference Result 1235 states and 1769 transitions. [2020-07-21 13:48:30,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:48:30,681 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2020-07-21 13:48:30,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:48:30,694 INFO L225 Difference]: With dead ends: 1235 [2020-07-21 13:48:30,695 INFO L226 Difference]: Without dead ends: 824 [2020-07-21 13:48:30,696 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 13:48:30,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2020-07-21 13:48:30,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 689. [2020-07-21 13:48:30,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 689 states. [2020-07-21 13:48:30,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 919 transitions. [2020-07-21 13:48:30,739 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 919 transitions. Word has length 102 [2020-07-21 13:48:30,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:48:30,739 INFO L479 AbstractCegarLoop]: Abstraction has 689 states and 919 transitions. [2020-07-21 13:48:30,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:48:30,740 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 919 transitions. [2020-07-21 13:48:30,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-07-21 13:48:30,742 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:48:30,743 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 13:48:30,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:48:30,957 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:48:30,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:48:30,958 INFO L82 PathProgramCache]: Analyzing trace with hash -2011229172, now seen corresponding path program 1 times [2020-07-21 13:48:30,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:48:30,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585212944] [2020-07-21 13:48:30,960 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:48:31,076 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:48:31,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:48:31,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 13:48:31,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:48:31,142 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 13:48:31,142 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:48:31,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [585212944] [2020-07-21 13:48:31,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:48:31,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:48:31,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40108115] [2020-07-21 13:48:31,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:48:31,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:48:31,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:48:31,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:48:31,144 INFO L87 Difference]: Start difference. First operand 689 states and 919 transitions. Second operand 3 states. [2020-07-21 13:48:31,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:48:31,713 INFO L93 Difference]: Finished difference Result 1914 states and 2622 transitions. [2020-07-21 13:48:31,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:48:31,713 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-07-21 13:48:31,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:48:31,722 INFO L225 Difference]: With dead ends: 1914 [2020-07-21 13:48:31,722 INFO L226 Difference]: Without dead ends: 1231 [2020-07-21 13:48:31,725 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 13:48:31,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2020-07-21 13:48:31,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1096. [2020-07-21 13:48:31,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1096 states. [2020-07-21 13:48:31,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1096 states to 1096 states and 1474 transitions. [2020-07-21 13:48:31,768 INFO L78 Accepts]: Start accepts. Automaton has 1096 states and 1474 transitions. Word has length 103 [2020-07-21 13:48:31,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:48:31,769 INFO L479 AbstractCegarLoop]: Abstraction has 1096 states and 1474 transitions. [2020-07-21 13:48:31,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:48:31,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1096 states and 1474 transitions. [2020-07-21 13:48:31,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-07-21 13:48:31,773 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:48:31,774 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 13:48:31,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:48:31,990 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:48:31,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:48:31,991 INFO L82 PathProgramCache]: Analyzing trace with hash 2004252269, now seen corresponding path program 1 times [2020-07-21 13:48:31,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:48:31,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885568519] [2020-07-21 13:48:31,992 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:48:32,093 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:48:32,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:48:32,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 13:48:32,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:48:32,178 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 13:48:32,178 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:48:32,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885568519] [2020-07-21 13:48:32,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:48:32,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:48:32,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444558033] [2020-07-21 13:48:32,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:48:32,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:48:32,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:48:32,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:48:32,180 INFO L87 Difference]: Start difference. First operand 1096 states and 1474 transitions. Second operand 3 states. [2020-07-21 13:48:32,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:48:32,779 INFO L93 Difference]: Finished difference Result 2863 states and 3930 transitions. [2020-07-21 13:48:32,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:48:32,779 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 125 [2020-07-21 13:48:32,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:48:32,798 INFO L225 Difference]: With dead ends: 2863 [2020-07-21 13:48:32,799 INFO L226 Difference]: Without dead ends: 1773 [2020-07-21 13:48:32,803 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 13:48:32,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1773 states. [2020-07-21 13:48:32,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1773 to 1773. [2020-07-21 13:48:32,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1773 states. [2020-07-21 13:48:32,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1773 states to 1773 states and 2286 transitions. [2020-07-21 13:48:32,894 INFO L78 Accepts]: Start accepts. Automaton has 1773 states and 2286 transitions. Word has length 125 [2020-07-21 13:48:32,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:48:32,895 INFO L479 AbstractCegarLoop]: Abstraction has 1773 states and 2286 transitions. [2020-07-21 13:48:32,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:48:32,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1773 states and 2286 transitions. [2020-07-21 13:48:32,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-07-21 13:48:32,911 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:48:32,912 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 13:48:33,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:48:33,127 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:48:33,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:48:33,128 INFO L82 PathProgramCache]: Analyzing trace with hash 996009503, now seen corresponding path program 1 times [2020-07-21 13:48:33,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:48:33,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610543360] [2020-07-21 13:48:33,128 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:48:33,254 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:48:33,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:48:33,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 13:48:33,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:48:33,301 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 13:48:33,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 13:48:33,409 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 13:48:33,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610543360] [2020-07-21 13:48:33,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 13:48:33,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 13:48:33,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806397291] [2020-07-21 13:48:33,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 13:48:33,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:48:33,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 13:48:33,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 13:48:33,412 INFO L87 Difference]: Start difference. First operand 1773 states and 2286 transitions. Second operand 6 states. [2020-07-21 13:48:34,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:48:34,552 INFO L93 Difference]: Finished difference Result 3918 states and 5288 transitions. [2020-07-21 13:48:34,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 13:48:34,553 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2020-07-21 13:48:34,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:48:34,572 INFO L225 Difference]: With dead ends: 3918 [2020-07-21 13:48:34,573 INFO L226 Difference]: Without dead ends: 2151 [2020-07-21 13:48:34,585 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 13:48:34,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2151 states. [2020-07-21 13:48:34,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2151 to 1793. [2020-07-21 13:48:34,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1793 states. [2020-07-21 13:48:34,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 2221 transitions. [2020-07-21 13:48:34,707 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 2221 transitions. Word has length 145 [2020-07-21 13:48:34,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:48:34,707 INFO L479 AbstractCegarLoop]: Abstraction has 1793 states and 2221 transitions. [2020-07-21 13:48:34,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 13:48:34,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 2221 transitions. [2020-07-21 13:48:34,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-07-21 13:48:34,714 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:48:34,714 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 13:48:34,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:48:34,930 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:48:34,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:48:34,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1157453929, now seen corresponding path program 1 times [2020-07-21 13:48:34,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:48:34,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [963450721] [2020-07-21 13:48:34,932 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:48:35,040 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:48:35,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:48:35,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 13:48:35,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:48:35,078 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 13:48:35,079 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:48:35,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [963450721] [2020-07-21 13:48:35,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:48:35,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:48:35,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64612758] [2020-07-21 13:48:35,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:48:35,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:48:35,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:48:35,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:48:35,081 INFO L87 Difference]: Start difference. First operand 1793 states and 2221 transitions. Second operand 3 states. [2020-07-21 13:48:35,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:48:35,661 INFO L93 Difference]: Finished difference Result 4672 states and 5904 transitions. [2020-07-21 13:48:35,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:48:35,662 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2020-07-21 13:48:35,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:48:35,679 INFO L225 Difference]: With dead ends: 4672 [2020-07-21 13:48:35,680 INFO L226 Difference]: Without dead ends: 2885 [2020-07-21 13:48:35,686 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 13:48:35,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2885 states. [2020-07-21 13:48:35,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2885 to 2750. [2020-07-21 13:48:35,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2750 states. [2020-07-21 13:48:35,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2750 states to 2750 states and 3404 transitions. [2020-07-21 13:48:35,774 INFO L78 Accepts]: Start accepts. Automaton has 2750 states and 3404 transitions. Word has length 149 [2020-07-21 13:48:35,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:48:35,774 INFO L479 AbstractCegarLoop]: Abstraction has 2750 states and 3404 transitions. [2020-07-21 13:48:35,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:48:35,774 INFO L276 IsEmpty]: Start isEmpty. Operand 2750 states and 3404 transitions. [2020-07-21 13:48:35,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-07-21 13:48:35,785 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:48:35,785 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 13:48:35,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:48:36,000 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:48:36,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:48:36,000 INFO L82 PathProgramCache]: Analyzing trace with hash 152592045, now seen corresponding path program 1 times [2020-07-21 13:48:36,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:48:36,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32680630] [2020-07-21 13:48:36,001 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:48:36,150 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:48:36,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:48:36,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 13:48:36,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:48:36,211 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 13:48:36,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 13:48:36,313 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 13:48:36,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32680630] [2020-07-21 13:48:36,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 13:48:36,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 13:48:36,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074719590] [2020-07-21 13:48:36,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 13:48:36,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:48:36,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 13:48:36,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-21 13:48:36,317 INFO L87 Difference]: Start difference. First operand 2750 states and 3404 transitions. Second operand 7 states. [2020-07-21 13:48:37,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:48:37,069 INFO L93 Difference]: Finished difference Result 5550 states and 6987 transitions. [2020-07-21 13:48:37,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 13:48:37,070 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 157 [2020-07-21 13:48:37,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:48:37,071 INFO L225 Difference]: With dead ends: 5550 [2020-07-21 13:48:37,071 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 13:48:37,082 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 13:48:37,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 13:48:37,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 13:48:37,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 13:48:37,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 13:48:37,083 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 157 [2020-07-21 13:48:37,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:48:37,083 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 13:48:37,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 13:48:37,083 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 13:48:37,084 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 13:48:37,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:48:37,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 13:48:38,629 WARN L193 SmtUtils]: Spent 834.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 67 [2020-07-21 13:48:38,922 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2020-07-21 13:48:39,241 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2020-07-21 13:48:39,246 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 13:48:39,246 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 13:48:39,246 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 13:48:39,247 INFO L268 CegarLoopResult]: For program point L333(lines 333 390) no Hoare annotation was computed. [2020-07-21 13:48:39,247 INFO L268 CegarLoopResult]: For program point L102(lines 102 390) no Hoare annotation was computed. [2020-07-21 13:48:39,247 INFO L268 CegarLoopResult]: For program point L565-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,247 INFO L268 CegarLoopResult]: For program point L532-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,247 INFO L268 CegarLoopResult]: For program point L499-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,247 INFO L268 CegarLoopResult]: For program point L466-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,247 INFO L268 CegarLoopResult]: For program point L433-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,247 INFO L268 CegarLoopResult]: For program point L400-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,247 INFO L268 CegarLoopResult]: For program point L268(lines 268 390) no Hoare annotation was computed. [2020-07-21 13:48:39,247 INFO L268 CegarLoopResult]: For program point L136(lines 136 390) no Hoare annotation was computed. [2020-07-21 13:48:39,248 INFO L268 CegarLoopResult]: For program point L566(line 566) no Hoare annotation was computed. [2020-07-21 13:48:39,248 INFO L268 CegarLoopResult]: For program point L533(line 533) no Hoare annotation was computed. [2020-07-21 13:48:39,248 INFO L268 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2020-07-21 13:48:39,248 INFO L268 CegarLoopResult]: For program point L467(line 467) no Hoare annotation was computed. [2020-07-21 13:48:39,248 INFO L268 CegarLoopResult]: For program point L434(line 434) no Hoare annotation was computed. [2020-07-21 13:48:39,248 INFO L268 CegarLoopResult]: For program point L401(line 401) no Hoare annotation was computed. [2020-07-21 13:48:39,248 INFO L268 CegarLoopResult]: For program point L203(lines 203 390) no Hoare annotation was computed. [2020-07-21 13:48:39,249 INFO L268 CegarLoopResult]: For program point L72(lines 72 390) no Hoare annotation was computed. [2020-07-21 13:48:39,249 INFO L268 CegarLoopResult]: For program point L568-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,249 INFO L268 CegarLoopResult]: For program point L535-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,249 INFO L268 CegarLoopResult]: For program point L502-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,249 INFO L268 CegarLoopResult]: For program point L469-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,249 INFO L268 CegarLoopResult]: For program point L436-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,249 INFO L268 CegarLoopResult]: For program point L403-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,250 INFO L268 CegarLoopResult]: For program point L337(lines 337 390) no Hoare annotation was computed. [2020-07-21 13:48:39,250 INFO L268 CegarLoopResult]: For program point L238(lines 238 390) no Hoare annotation was computed. [2020-07-21 13:48:39,250 INFO L268 CegarLoopResult]: For program point L569(line 569) no Hoare annotation was computed. [2020-07-21 13:48:39,250 INFO L268 CegarLoopResult]: For program point L536(line 536) no Hoare annotation was computed. [2020-07-21 13:48:39,250 INFO L268 CegarLoopResult]: For program point L503(line 503) no Hoare annotation was computed. [2020-07-21 13:48:39,250 INFO L268 CegarLoopResult]: For program point L470(line 470) no Hoare annotation was computed. [2020-07-21 13:48:39,250 INFO L268 CegarLoopResult]: For program point L437(line 437) no Hoare annotation was computed. [2020-07-21 13:48:39,250 INFO L268 CegarLoopResult]: For program point L404(line 404) no Hoare annotation was computed. [2020-07-21 13:48:39,250 INFO L268 CegarLoopResult]: For program point L173(lines 173 390) no Hoare annotation was computed. [2020-07-21 13:48:39,250 INFO L268 CegarLoopResult]: For program point L140(lines 140 390) no Hoare annotation was computed. [2020-07-21 13:48:39,250 INFO L268 CegarLoopResult]: For program point L372(lines 372 390) no Hoare annotation was computed. [2020-07-21 13:48:39,250 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 431) no Hoare annotation was computed. [2020-07-21 13:48:39,251 INFO L268 CegarLoopResult]: For program point L306(lines 306 390) no Hoare annotation was computed. [2020-07-21 13:48:39,251 INFO L268 CegarLoopResult]: For program point L273(lines 273 390) no Hoare annotation was computed. [2020-07-21 13:48:39,251 INFO L268 CegarLoopResult]: For program point L108(lines 108 390) no Hoare annotation was computed. [2020-07-21 13:48:39,251 INFO L268 CegarLoopResult]: For program point L571-1(lines 571 573) no Hoare annotation was computed. [2020-07-21 13:48:39,251 INFO L268 CegarLoopResult]: For program point L538-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,251 INFO L268 CegarLoopResult]: For program point L505-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,251 INFO L268 CegarLoopResult]: For program point L472-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,251 INFO L268 CegarLoopResult]: For program point L439-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,251 INFO L268 CegarLoopResult]: For program point L406-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,251 INFO L268 CegarLoopResult]: For program point L208(lines 208 390) no Hoare annotation was computed. [2020-07-21 13:48:39,251 INFO L268 CegarLoopResult]: For program point L43(lines 43 390) no Hoare annotation was computed. [2020-07-21 13:48:39,251 INFO L268 CegarLoopResult]: For program point L572(line 572) no Hoare annotation was computed. [2020-07-21 13:48:39,251 INFO L268 CegarLoopResult]: For program point L539(line 539) no Hoare annotation was computed. [2020-07-21 13:48:39,252 INFO L268 CegarLoopResult]: For program point L506(line 506) no Hoare annotation was computed. [2020-07-21 13:48:39,252 INFO L268 CegarLoopResult]: For program point L473(line 473) no Hoare annotation was computed. [2020-07-21 13:48:39,252 INFO L268 CegarLoopResult]: For program point L440(line 440) no Hoare annotation was computed. [2020-07-21 13:48:39,252 INFO L268 CegarLoopResult]: For program point L407(line 407) no Hoare annotation was computed. [2020-07-21 13:48:39,252 INFO L268 CegarLoopResult]: For program point L144(lines 144 390) no Hoare annotation was computed. [2020-07-21 13:48:39,252 INFO L268 CegarLoopResult]: For program point L541-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,252 INFO L268 CegarLoopResult]: For program point L508-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,252 INFO L268 CegarLoopResult]: For program point L475-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,252 INFO L268 CegarLoopResult]: For program point L442-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,253 INFO L268 CegarLoopResult]: For program point L409-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,253 INFO L268 CegarLoopResult]: For program point L178(lines 178 390) no Hoare annotation was computed. [2020-07-21 13:48:39,254 INFO L268 CegarLoopResult]: For program point L542(line 542) no Hoare annotation was computed. [2020-07-21 13:48:39,254 INFO L268 CegarLoopResult]: For program point L509(line 509) no Hoare annotation was computed. [2020-07-21 13:48:39,254 INFO L268 CegarLoopResult]: For program point L476(line 476) no Hoare annotation was computed. [2020-07-21 13:48:39,254 INFO L268 CegarLoopResult]: For program point L443(line 443) no Hoare annotation was computed. [2020-07-21 13:48:39,254 INFO L268 CegarLoopResult]: For program point L410(line 410) no Hoare annotation was computed. [2020-07-21 13:48:39,254 INFO L268 CegarLoopResult]: For program point L377(lines 377 390) no Hoare annotation was computed. [2020-07-21 13:48:39,255 INFO L268 CegarLoopResult]: For program point L278(lines 278 390) no Hoare annotation was computed. [2020-07-21 13:48:39,255 INFO L268 CegarLoopResult]: For program point L245(lines 245 390) no Hoare annotation was computed. [2020-07-21 13:48:39,255 INFO L268 CegarLoopResult]: For program point L80(lines 80 390) no Hoare annotation was computed. [2020-07-21 13:48:39,255 INFO L268 CegarLoopResult]: For program point L345(lines 345 390) no Hoare annotation was computed. [2020-07-21 13:48:39,255 INFO L268 CegarLoopResult]: For program point L312(lines 312 390) no Hoare annotation was computed. [2020-07-21 13:48:39,255 INFO L268 CegarLoopResult]: For program point L114(lines 114 390) no Hoare annotation was computed. [2020-07-21 13:48:39,255 INFO L268 CegarLoopResult]: For program point L544-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,255 INFO L268 CegarLoopResult]: For program point L511-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,255 INFO L268 CegarLoopResult]: For program point L478-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,255 INFO L268 CegarLoopResult]: For program point L445-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,255 INFO L268 CegarLoopResult]: For program point L412-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,255 INFO L268 CegarLoopResult]: For program point L214(lines 214 390) no Hoare annotation was computed. [2020-07-21 13:48:39,255 INFO L268 CegarLoopResult]: For program point L148(lines 148 390) no Hoare annotation was computed. [2020-07-21 13:48:39,256 INFO L268 CegarLoopResult]: For program point L49(lines 49 390) no Hoare annotation was computed. [2020-07-21 13:48:39,256 INFO L268 CegarLoopResult]: For program point L545(line 545) no Hoare annotation was computed. [2020-07-21 13:48:39,256 INFO L268 CegarLoopResult]: For program point L512(line 512) no Hoare annotation was computed. [2020-07-21 13:48:39,256 INFO L268 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2020-07-21 13:48:39,256 INFO L268 CegarLoopResult]: For program point L446(line 446) no Hoare annotation was computed. [2020-07-21 13:48:39,256 INFO L268 CegarLoopResult]: For program point L413(line 413) no Hoare annotation was computed. [2020-07-21 13:48:39,256 INFO L268 CegarLoopResult]: For program point L84(lines 84 390) no Hoare annotation was computed. [2020-07-21 13:48:39,256 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,256 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,256 INFO L268 CegarLoopResult]: For program point L547-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,256 INFO L268 CegarLoopResult]: For program point L514-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,256 INFO L268 CegarLoopResult]: For program point L481-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,256 INFO L268 CegarLoopResult]: For program point L448-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,256 INFO L268 CegarLoopResult]: For program point L382(lines 382 390) no Hoare annotation was computed. [2020-07-21 13:48:39,257 INFO L268 CegarLoopResult]: For program point L415-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,257 INFO L268 CegarLoopResult]: For program point L316(lines 316 390) no Hoare annotation was computed. [2020-07-21 13:48:39,257 INFO L268 CegarLoopResult]: For program point L250(lines 250 390) no Hoare annotation was computed. [2020-07-21 13:48:39,257 INFO L268 CegarLoopResult]: For program point L548(line 548) no Hoare annotation was computed. [2020-07-21 13:48:39,257 INFO L268 CegarLoopResult]: For program point L515(line 515) no Hoare annotation was computed. [2020-07-21 13:48:39,257 INFO L268 CegarLoopResult]: For program point L482(line 482) no Hoare annotation was computed. [2020-07-21 13:48:39,257 INFO L268 CegarLoopResult]: For program point L449(line 449) no Hoare annotation was computed. [2020-07-21 13:48:39,257 INFO L268 CegarLoopResult]: For program point L416(line 416) no Hoare annotation was computed. [2020-07-21 13:48:39,257 INFO L268 CegarLoopResult]: For program point L218(lines 218 390) no Hoare annotation was computed. [2020-07-21 13:48:39,257 INFO L268 CegarLoopResult]: For program point L152(lines 152 390) no Hoare annotation was computed. [2020-07-21 13:48:39,257 INFO L268 CegarLoopResult]: For program point L119(lines 119 390) no Hoare annotation was computed. [2020-07-21 13:48:39,257 INFO L268 CegarLoopResult]: For program point L318(lines 318 390) no Hoare annotation was computed. [2020-07-21 13:48:39,257 INFO L268 CegarLoopResult]: For program point L186(lines 186 390) no Hoare annotation was computed. [2020-07-21 13:48:39,258 INFO L268 CegarLoopResult]: For program point L54(lines 54 390) no Hoare annotation was computed. [2020-07-21 13:48:39,258 INFO L268 CegarLoopResult]: For program point L550-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,258 INFO L268 CegarLoopResult]: For program point L517-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,258 INFO L268 CegarLoopResult]: For program point L484-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,258 INFO L268 CegarLoopResult]: For program point L451-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,258 INFO L268 CegarLoopResult]: For program point L418-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,258 INFO L268 CegarLoopResult]: For program point L286(lines 286 390) no Hoare annotation was computed. [2020-07-21 13:48:39,258 INFO L268 CegarLoopResult]: For program point L551(line 551) no Hoare annotation was computed. [2020-07-21 13:48:39,258 INFO L268 CegarLoopResult]: For program point L518(line 518) no Hoare annotation was computed. [2020-07-21 13:48:39,259 INFO L268 CegarLoopResult]: For program point L485(line 485) no Hoare annotation was computed. [2020-07-21 13:48:39,259 INFO L268 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2020-07-21 13:48:39,259 INFO L268 CegarLoopResult]: For program point L419(line 419) no Hoare annotation was computed. [2020-07-21 13:48:39,259 INFO L268 CegarLoopResult]: For program point L353(lines 353 390) no Hoare annotation was computed. [2020-07-21 13:48:39,259 INFO L268 CegarLoopResult]: For program point L189(lines 189 390) no Hoare annotation was computed. [2020-07-21 13:48:39,259 INFO L268 CegarLoopResult]: For program point L553-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,259 INFO L268 CegarLoopResult]: For program point L520-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,259 INFO L268 CegarLoopResult]: For program point L487-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,259 INFO L268 CegarLoopResult]: For program point L454-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,259 INFO L268 CegarLoopResult]: For program point L421-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,259 INFO L268 CegarLoopResult]: For program point L355(lines 355 390) no Hoare annotation was computed. [2020-07-21 13:48:39,259 INFO L268 CegarLoopResult]: For program point L256(lines 256 390) no Hoare annotation was computed. [2020-07-21 13:48:39,259 INFO L268 CegarLoopResult]: For program point L223(lines 223 390) no Hoare annotation was computed. [2020-07-21 13:48:39,260 INFO L268 CegarLoopResult]: For program point L124(lines 124 390) no Hoare annotation was computed. [2020-07-21 13:48:39,260 INFO L268 CegarLoopResult]: For program point L554(line 554) no Hoare annotation was computed. [2020-07-21 13:48:39,260 INFO L268 CegarLoopResult]: For program point L521(line 521) no Hoare annotation was computed. [2020-07-21 13:48:39,260 INFO L268 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2020-07-21 13:48:39,260 INFO L268 CegarLoopResult]: For program point L455(line 455) no Hoare annotation was computed. [2020-07-21 13:48:39,260 INFO L268 CegarLoopResult]: For program point L422(line 422) no Hoare annotation was computed. [2020-07-21 13:48:39,260 INFO L268 CegarLoopResult]: For program point L92(lines 92 390) no Hoare annotation was computed. [2020-07-21 13:48:39,260 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 13:48:39,260 INFO L268 CegarLoopResult]: For program point L324(lines 324 390) no Hoare annotation was computed. [2020-07-21 13:48:39,260 INFO L268 CegarLoopResult]: For program point L556-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,261 INFO L268 CegarLoopResult]: For program point L523-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,261 INFO L268 CegarLoopResult]: For program point L490-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,261 INFO L268 CegarLoopResult]: For program point L457-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,261 INFO L268 CegarLoopResult]: For program point L391(lines 391 393) no Hoare annotation was computed. [2020-07-21 13:48:39,261 INFO L268 CegarLoopResult]: For program point L424-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,261 INFO L268 CegarLoopResult]: For program point L391-2(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,261 INFO L268 CegarLoopResult]: For program point L292(lines 292 390) no Hoare annotation was computed. [2020-07-21 13:48:39,261 INFO L268 CegarLoopResult]: For program point L160(lines 160 390) no Hoare annotation was computed. [2020-07-21 13:48:39,261 INFO L268 CegarLoopResult]: For program point L557(line 557) no Hoare annotation was computed. [2020-07-21 13:48:39,261 INFO L268 CegarLoopResult]: For program point L524(line 524) no Hoare annotation was computed. [2020-07-21 13:48:39,261 INFO L268 CegarLoopResult]: For program point L491(line 491) no Hoare annotation was computed. [2020-07-21 13:48:39,261 INFO L268 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2020-07-21 13:48:39,261 INFO L268 CegarLoopResult]: For program point L425(line 425) no Hoare annotation was computed. [2020-07-21 13:48:39,262 INFO L268 CegarLoopResult]: For program point L392(line 392) no Hoare annotation was computed. [2020-07-21 13:48:39,262 INFO L268 CegarLoopResult]: For program point L194(lines 194 390) no Hoare annotation was computed. [2020-07-21 13:48:39,262 INFO L268 CegarLoopResult]: For program point L62(lines 62 390) no Hoare annotation was computed. [2020-07-21 13:48:39,262 INFO L268 CegarLoopResult]: For program point L261(lines 261 390) no Hoare annotation was computed. [2020-07-21 13:48:39,262 INFO L268 CegarLoopResult]: For program point L129(lines 129 390) no Hoare annotation was computed. [2020-07-21 13:48:39,262 INFO L268 CegarLoopResult]: For program point L559-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,262 INFO L268 CegarLoopResult]: For program point L526-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,262 INFO L268 CegarLoopResult]: For program point L493-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,262 INFO L268 CegarLoopResult]: For program point L460-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,262 INFO L268 CegarLoopResult]: For program point L427-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,262 INFO L268 CegarLoopResult]: For program point L361(lines 361 390) no Hoare annotation was computed. [2020-07-21 13:48:39,262 INFO L268 CegarLoopResult]: For program point L394-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,263 INFO L268 CegarLoopResult]: For program point L97(lines 97 390) no Hoare annotation was computed. [2020-07-21 13:48:39,263 INFO L268 CegarLoopResult]: For program point L31(lines 31 390) no Hoare annotation was computed. [2020-07-21 13:48:39,263 INFO L268 CegarLoopResult]: For program point L560(line 560) no Hoare annotation was computed. [2020-07-21 13:48:39,263 INFO L268 CegarLoopResult]: For program point L527(line 527) no Hoare annotation was computed. [2020-07-21 13:48:39,263 INFO L268 CegarLoopResult]: For program point L494(line 494) no Hoare annotation was computed. [2020-07-21 13:48:39,263 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-21 13:48:39,263 INFO L268 CegarLoopResult]: For program point L428(line 428) no Hoare annotation was computed. [2020-07-21 13:48:39,263 INFO L268 CegarLoopResult]: For program point L395(line 395) no Hoare annotation was computed. [2020-07-21 13:48:39,263 INFO L268 CegarLoopResult]: For program point L329(lines 329 390) no Hoare annotation was computed. [2020-07-21 13:48:39,264 INFO L268 CegarLoopResult]: For program point L197(lines 197 390) no Hoare annotation was computed. [2020-07-21 13:48:39,264 INFO L268 CegarLoopResult]: For program point L65(lines 65 390) no Hoare annotation was computed. [2020-07-21 13:48:39,264 INFO L268 CegarLoopResult]: For program point L363(lines 363 390) no Hoare annotation was computed. [2020-07-21 13:48:39,264 INFO L268 CegarLoopResult]: For program point L231(lines 231 390) no Hoare annotation was computed. [2020-07-21 13:48:39,264 INFO L268 CegarLoopResult]: For program point L165(lines 165 390) no Hoare annotation was computed. [2020-07-21 13:48:39,264 INFO L268 CegarLoopResult]: For program point L562-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,264 INFO L268 CegarLoopResult]: For program point L529-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,264 INFO L268 CegarLoopResult]: For program point L496-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,264 INFO L268 CegarLoopResult]: For program point L463-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,264 INFO L268 CegarLoopResult]: For program point L430-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,264 INFO L268 CegarLoopResult]: For program point L397-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:48:39,264 INFO L268 CegarLoopResult]: For program point L265(lines 265 390) no Hoare annotation was computed. [2020-07-21 13:48:39,265 INFO L268 CegarLoopResult]: For program point L563(line 563) no Hoare annotation was computed. [2020-07-21 13:48:39,265 INFO L268 CegarLoopResult]: For program point L530(line 530) no Hoare annotation was computed. [2020-07-21 13:48:39,265 INFO L268 CegarLoopResult]: For program point L497(line 497) no Hoare annotation was computed. [2020-07-21 13:48:39,265 INFO L268 CegarLoopResult]: For program point L464(line 464) no Hoare annotation was computed. [2020-07-21 13:48:39,265 INFO L268 CegarLoopResult]: For program point L431(line 431) no Hoare annotation was computed. [2020-07-21 13:48:39,265 INFO L268 CegarLoopResult]: For program point L398(line 398) no Hoare annotation was computed. [2020-07-21 13:48:39,265 INFO L268 CegarLoopResult]: For program point L365(lines 365 390) no Hoare annotation was computed. [2020-07-21 13:48:39,265 INFO L268 CegarLoopResult]: For program point L299(lines 299 390) no Hoare annotation was computed. [2020-07-21 13:48:39,265 INFO L268 CegarLoopResult]: For program point L35(lines 35 390) no Hoare annotation was computed. [2020-07-21 13:48:39,265 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 13:48:39,265 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 13:48:39,265 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 13:48:39,265 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 13:48:39,266 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 13:48:39,266 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 577 594) no Hoare annotation was computed. [2020-07-21 13:48:39,266 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 13:48:39,266 INFO L268 CegarLoopResult]: For program point L591-1(line 591) no Hoare annotation was computed. [2020-07-21 13:48:39,266 INFO L268 CegarLoopResult]: For program point L588(line 588) no Hoare annotation was computed. [2020-07-21 13:48:39,266 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 13:48:39,267 INFO L268 CegarLoopResult]: For program point L583-3(lines 577 594) no Hoare annotation was computed. [2020-07-21 13:48:39,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:48:39 BoogieIcfgContainer [2020-07-21 13:48:39,289 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 13:48:39,291 INFO L168 Benchmark]: Toolchain (without parser) took 14976.89 ms. Allocated memory was 146.3 MB in the beginning and 394.3 MB in the end (delta: 248.0 MB). Free memory was 100.7 MB in the beginning and 343.2 MB in the end (delta: -242.4 MB). Peak memory consumption was 260.2 MB. Max. memory is 7.1 GB. [2020-07-21 13:48:39,292 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 146.3 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 13:48:39,293 INFO L168 Benchmark]: CACSL2BoogieTranslator took 891.91 ms. Allocated memory was 146.3 MB in the beginning and 205.0 MB in the end (delta: 58.7 MB). Free memory was 100.5 MB in the beginning and 171.1 MB in the end (delta: -70.6 MB). Peak memory consumption was 31.1 MB. Max. memory is 7.1 GB. [2020-07-21 13:48:39,293 INFO L168 Benchmark]: Boogie Preprocessor took 129.91 ms. Allocated memory is still 205.0 MB. Free memory was 171.1 MB in the beginning and 165.6 MB in the end (delta: 5.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 7.1 GB. [2020-07-21 13:48:39,294 INFO L168 Benchmark]: RCFGBuilder took 1374.94 ms. Allocated memory was 205.0 MB in the beginning and 238.6 MB in the end (delta: 33.6 MB). Free memory was 165.6 MB in the beginning and 178.8 MB in the end (delta: -13.1 MB). Peak memory consumption was 79.6 MB. Max. memory is 7.1 GB. [2020-07-21 13:48:39,295 INFO L168 Benchmark]: TraceAbstraction took 12571.89 ms. Allocated memory was 238.6 MB in the beginning and 394.3 MB in the end (delta: 155.7 MB). Free memory was 177.3 MB in the beginning and 343.2 MB in the end (delta: -165.8 MB). Peak memory consumption was 244.6 MB. Max. memory is 7.1 GB. [2020-07-21 13:48:39,299 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 146.3 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 891.91 ms. Allocated memory was 146.3 MB in the beginning and 205.0 MB in the end (delta: 58.7 MB). Free memory was 100.5 MB in the beginning and 171.1 MB in the end (delta: -70.6 MB). Peak memory consumption was 31.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.91 ms. Allocated memory is still 205.0 MB. Free memory was 171.1 MB in the beginning and 165.6 MB in the end (delta: 5.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1374.94 ms. Allocated memory was 205.0 MB in the beginning and 238.6 MB in the end (delta: 33.6 MB). Free memory was 165.6 MB in the beginning and 178.8 MB in the end (delta: -13.1 MB). Peak memory consumption was 79.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12571.89 ms. Allocated memory was 238.6 MB in the beginning and 394.3 MB in the end (delta: 155.7 MB). Free memory was 177.3 MB in the beginning and 343.2 MB in the end (delta: -165.8 MB). Peak memory consumption was 244.6 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: 10.5s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 6.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 632 SDtfs, 1396 SDslu, 184 SDs, 0 SdLazy, 3763 SolverSat, 769 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1279 GetRequests, 1252 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2750occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 8 MinimizatonAttempts, 775 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 98 PreInvPairs, 152 NumberOfFragments, 518 HoareAnnotationTreeSize, 98 FomulaSimplifications, 5840 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 7 FomulaSimplificationsInter, 1506 FormulaSimplificationTreeSizeReductionInter, 1.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 0.7s 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...