/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 14:05:11,992 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 14:05:11,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 14:05:12,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 14:05:12,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 14:05:12,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 14:05:12,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 14:05:12,016 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 14:05:12,018 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 14:05:12,018 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 14:05:12,019 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 14:05:12,021 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 14:05:12,021 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 14:05:12,022 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 14:05:12,023 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 14:05:12,024 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 14:05:12,025 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 14:05:12,026 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 14:05:12,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 14:05:12,029 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 14:05:12,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 14:05:12,032 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 14:05:12,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 14:05:12,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 14:05:12,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 14:05:12,044 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 14:05:12,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 14:05:12,045 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 14:05:12,046 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 14:05:12,060 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 14:05:12,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 14:05:12,062 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 14:05:12,062 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 14:05:12,062 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 14:05:12,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 14:05:12,062 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 14:05:12,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 14:05:12,063 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 14:05:12,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 14:05:12,063 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 14:05:12,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 14:05:12,064 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 14:05:12,064 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 14:05:12,064 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 14:05:12,064 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 14:05:12,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 14:05:12,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 14:05:12,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 14:05:12,065 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 14:05:12,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 14:05:12,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 14:05:12,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 14:05:12,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 14:05:12,066 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 14:05:12,066 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 14:05:12,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:05:12,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 14:05:12,067 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 14:05:12,067 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 14:05:12,330 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 14:05:12,343 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 14:05:12,346 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 14:05:12,347 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 14:05:12,348 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 14:05:12,348 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label31.c [2020-07-20 14:05:12,407 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9fe2bf8d/2e3f23c498c74df08a1b16cc306a46a3/FLAGcbb8f82bd [2020-07-20 14:05:12,967 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 14:05:12,968 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label31.c [2020-07-20 14:05:12,987 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9fe2bf8d/2e3f23c498c74df08a1b16cc306a46a3/FLAGcbb8f82bd [2020-07-20 14:05:13,235 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9fe2bf8d/2e3f23c498c74df08a1b16cc306a46a3 [2020-07-20 14:05:13,244 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 14:05:13,247 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 14:05:13,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 14:05:13,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 14:05:13,252 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 14:05:13,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:05:13" (1/1) ... [2020-07-20 14:05:13,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24dcfc9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:05:13, skipping insertion in model container [2020-07-20 14:05:13,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:05:13" (1/1) ... [2020-07-20 14:05:13,266 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 14:05:13,326 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 14:05:13,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:05:13,856 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 14:05:14,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:05:14,038 INFO L208 MainTranslator]: Completed translation [2020-07-20 14:05:14,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:05:14 WrapperNode [2020-07-20 14:05:14,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 14:05:14,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 14:05:14,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 14:05:14,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 14:05:14,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:05:14" (1/1) ... [2020-07-20 14:05:14,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:05:14" (1/1) ... [2020-07-20 14:05:14,066 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:05:14" (1/1) ... [2020-07-20 14:05:14,067 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:05:14" (1/1) ... [2020-07-20 14:05:14,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:05:14" (1/1) ... [2020-07-20 14:05:14,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:05:14" (1/1) ... [2020-07-20 14:05:14,126 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:05:14" (1/1) ... [2020-07-20 14:05:14,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 14:05:14,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 14:05:14,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 14:05:14,134 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 14:05:14,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:05:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 14:05:14,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 14:05:14,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 14:05:14,193 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-20 14:05:14,193 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 14:05:14,194 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-20 14:05:14,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 14:05:14,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 14:05:14,194 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 14:05:14,194 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 14:05:14,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 14:05:14,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 14:05:15,294 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 14:05:15,294 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 14:05:15,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:05:15 BoogieIcfgContainer [2020-07-20 14:05:15,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 14:05:15,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 14:05:15,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 14:05:15,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 14:05:15,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 02:05:13" (1/3) ... [2020-07-20 14:05:15,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@431566f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:05:15, skipping insertion in model container [2020-07-20 14:05:15,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:05:14" (2/3) ... [2020-07-20 14:05:15,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@431566f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:05:15, skipping insertion in model container [2020-07-20 14:05:15,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:05:15" (3/3) ... [2020-07-20 14:05:15,319 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label31.c [2020-07-20 14:05:15,331 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 14:05:15,344 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 14:05:15,361 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 14:05:15,397 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 14:05:15,398 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 14:05:15,398 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 14:05:15,398 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 14:05:15,399 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 14:05:15,399 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 14:05:15,399 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 14:05:15,399 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 14:05:15,426 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-07-20 14:05:15,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-07-20 14:05:15,443 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:05:15,444 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, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:05:15,445 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:05:15,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:05:15,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1379021910, now seen corresponding path program 1 times [2020-07-20 14:05:15,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:05:15,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532983445] [2020-07-20 14:05:15,458 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:05:15,657 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:05:15,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:05:15,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 14:05:15,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:05:15,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:05:15,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:05:15,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532983445] [2020-07-20 14:05:15,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:05:15,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:05:15,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741144910] [2020-07-20 14:05:15,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:05:15,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:05:15,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:05:15,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:05:15,791 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 3 states. [2020-07-20 14:05:16,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:05:16,608 INFO L93 Difference]: Finished difference Result 572 states and 963 transitions. [2020-07-20 14:05:16,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:05:16,611 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-07-20 14:05:16,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:05:16,628 INFO L225 Difference]: With dead ends: 572 [2020-07-20 14:05:16,628 INFO L226 Difference]: Without dead ends: 278 [2020-07-20 14:05:16,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:05:16,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-07-20 14:05:16,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2020-07-20 14:05:16,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-07-20 14:05:16,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 394 transitions. [2020-07-20 14:05:16,704 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 394 transitions. Word has length 98 [2020-07-20 14:05:16,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:05:16,705 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 394 transitions. [2020-07-20 14:05:16,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:05:16,705 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 394 transitions. [2020-07-20 14:05:16,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-07-20 14:05:16,711 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:05:16,711 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, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:05:16,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:05:16,926 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:05:16,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:05:16,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1132011565, now seen corresponding path program 1 times [2020-07-20 14:05:16,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:05:16,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251787611] [2020-07-20 14:05:16,927 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:05:17,036 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:05:17,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:05:17,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 14:05:17,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:05:17,086 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:05:17,086 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:05:17,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251787611] [2020-07-20 14:05:17,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:05:17,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 14:05:17,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158991530] [2020-07-20 14:05:17,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:05:17,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:05:17,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:05:17,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:05:17,090 INFO L87 Difference]: Start difference. First operand 278 states and 394 transitions. Second operand 5 states. [2020-07-20 14:05:17,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:05:17,897 INFO L93 Difference]: Finished difference Result 842 states and 1218 transitions. [2020-07-20 14:05:17,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 14:05:17,899 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-07-20 14:05:17,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:05:17,907 INFO L225 Difference]: With dead ends: 842 [2020-07-20 14:05:17,907 INFO L226 Difference]: Without dead ends: 570 [2020-07-20 14:05:17,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-20 14:05:17,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2020-07-20 14:05:17,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 556. [2020-07-20 14:05:17,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-07-20 14:05:17,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 784 transitions. [2020-07-20 14:05:17,955 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 784 transitions. Word has length 108 [2020-07-20 14:05:17,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:05:17,955 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 784 transitions. [2020-07-20 14:05:17,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:05:17,956 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 784 transitions. [2020-07-20 14:05:17,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-07-20 14:05:17,961 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:05:17,961 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:05:18,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:05:18,177 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:05:18,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:05:18,178 INFO L82 PathProgramCache]: Analyzing trace with hash -623833434, now seen corresponding path program 1 times [2020-07-20 14:05:18,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:05:18,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699479967] [2020-07-20 14:05:18,179 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:05:18,375 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:05:18,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:05:18,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:05:18,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:05:18,424 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:05:18,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:05:18,510 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:05:18,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699479967] [2020-07-20 14:05:18,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:05:18,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-07-20 14:05:18,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936606554] [2020-07-20 14:05:18,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 14:05:18,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:05:18,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 14:05:18,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-07-20 14:05:18,514 INFO L87 Difference]: Start difference. First operand 556 states and 784 transitions. Second operand 8 states. [2020-07-20 14:05:20,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:05:20,585 INFO L93 Difference]: Finished difference Result 2270 states and 3383 transitions. [2020-07-20 14:05:20,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 14:05:20,587 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 128 [2020-07-20 14:05:20,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:05:20,605 INFO L225 Difference]: With dead ends: 2270 [2020-07-20 14:05:20,605 INFO L226 Difference]: Without dead ends: 1720 [2020-07-20 14:05:20,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-07-20 14:05:20,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1720 states. [2020-07-20 14:05:20,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1720 to 1390. [2020-07-20 14:05:20,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1390 states. [2020-07-20 14:05:20,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 1826 transitions. [2020-07-20 14:05:20,690 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 1826 transitions. Word has length 128 [2020-07-20 14:05:20,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:05:20,691 INFO L479 AbstractCegarLoop]: Abstraction has 1390 states and 1826 transitions. [2020-07-20 14:05:20,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 14:05:20,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 1826 transitions. [2020-07-20 14:05:20,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-07-20 14:05:20,726 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:05:20,726 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-07-20 14:05:20,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:05:20,941 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:05:20,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:05:20,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1632168509, now seen corresponding path program 1 times [2020-07-20 14:05:20,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:05:20,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045843265] [2020-07-20 14:05:20,944 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:05:21,089 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:05:21,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:05:21,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:05:21,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:05:21,142 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-20 14:05:21,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:05:21,230 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 54 proven. 19 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-07-20 14:05:21,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045843265] [2020-07-20 14:05:21,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:05:21,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-20 14:05:21,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990834958] [2020-07-20 14:05:21,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 14:05:21,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:05:21,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 14:05:21,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 14:05:21,234 INFO L87 Difference]: Start difference. First operand 1390 states and 1826 transitions. Second operand 7 states. [2020-07-20 14:05:22,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:05:22,649 INFO L93 Difference]: Finished difference Result 4669 states and 6466 transitions. [2020-07-20 14:05:22,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 14:05:22,650 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 148 [2020-07-20 14:05:22,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:05:22,673 INFO L225 Difference]: With dead ends: 4669 [2020-07-20 14:05:22,673 INFO L226 Difference]: Without dead ends: 3289 [2020-07-20 14:05:22,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 291 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-07-20 14:05:22,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2020-07-20 14:05:22,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 2925. [2020-07-20 14:05:22,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2925 states. [2020-07-20 14:05:22,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 3785 transitions. [2020-07-20 14:05:22,779 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 3785 transitions. Word has length 148 [2020-07-20 14:05:22,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:05:22,780 INFO L479 AbstractCegarLoop]: Abstraction has 2925 states and 3785 transitions. [2020-07-20 14:05:22,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 14:05:22,780 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 3785 transitions. [2020-07-20 14:05:22,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-07-20 14:05:22,789 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:05:22,790 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2020-07-20 14:05:23,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:05:23,004 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:05:23,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:05:23,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1534770869, now seen corresponding path program 1 times [2020-07-20 14:05:23,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:05:23,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429182807] [2020-07-20 14:05:23,006 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:05:23,135 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:05:23,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:05:23,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:05:23,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:05:23,176 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-07-20 14:05:23,176 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:05:23,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429182807] [2020-07-20 14:05:23,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:05:23,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:05:23,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452544403] [2020-07-20 14:05:23,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:05:23,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:05:23,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:05:23,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:05:23,179 INFO L87 Difference]: Start difference. First operand 2925 states and 3785 transitions. Second operand 3 states. [2020-07-20 14:05:23,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:05:23,764 INFO L93 Difference]: Finished difference Result 8038 states and 10693 transitions. [2020-07-20 14:05:23,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:05:23,765 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 152 [2020-07-20 14:05:23,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:05:23,795 INFO L225 Difference]: With dead ends: 8038 [2020-07-20 14:05:23,796 INFO L226 Difference]: Without dead ends: 5123 [2020-07-20 14:05:23,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:05:23,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5123 states. [2020-07-20 14:05:23,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5123 to 4170. [2020-07-20 14:05:23,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4170 states. [2020-07-20 14:05:23,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4170 states to 4170 states and 5480 transitions. [2020-07-20 14:05:23,944 INFO L78 Accepts]: Start accepts. Automaton has 4170 states and 5480 transitions. Word has length 152 [2020-07-20 14:05:23,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:05:23,945 INFO L479 AbstractCegarLoop]: Abstraction has 4170 states and 5480 transitions. [2020-07-20 14:05:23,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:05:23,949 INFO L276 IsEmpty]: Start isEmpty. Operand 4170 states and 5480 transitions. [2020-07-20 14:05:23,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-07-20 14:05:23,967 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:05:23,968 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2020-07-20 14:05:24,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:05:24,182 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:05:24,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:05:24,183 INFO L82 PathProgramCache]: Analyzing trace with hash 269767272, now seen corresponding path program 1 times [2020-07-20 14:05:24,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:05:24,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565986065] [2020-07-20 14:05:24,184 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:05:24,325 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:05:24,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:05:24,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:05:24,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:05:24,384 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-07-20 14:05:24,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:05:24,531 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 107 proven. 16 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-07-20 14:05:24,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565986065] [2020-07-20 14:05:24,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:05:24,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-20 14:05:24,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487311913] [2020-07-20 14:05:24,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 14:05:24,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:05:24,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 14:05:24,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 14:05:24,534 INFO L87 Difference]: Start difference. First operand 4170 states and 5480 transitions. Second operand 6 states. [2020-07-20 14:05:25,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:05:25,362 INFO L93 Difference]: Finished difference Result 7409 states and 9840 transitions. [2020-07-20 14:05:25,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 14:05:25,364 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 177 [2020-07-20 14:05:25,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:05:25,386 INFO L225 Difference]: With dead ends: 7409 [2020-07-20 14:05:25,386 INFO L226 Difference]: Without dead ends: 4484 [2020-07-20 14:05:25,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 350 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-20 14:05:25,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4484 states. [2020-07-20 14:05:25,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4484 to 3918. [2020-07-20 14:05:25,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3918 states. [2020-07-20 14:05:25,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3918 states to 3918 states and 5041 transitions. [2020-07-20 14:05:25,510 INFO L78 Accepts]: Start accepts. Automaton has 3918 states and 5041 transitions. Word has length 177 [2020-07-20 14:05:25,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:05:25,511 INFO L479 AbstractCegarLoop]: Abstraction has 3918 states and 5041 transitions. [2020-07-20 14:05:25,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 14:05:25,511 INFO L276 IsEmpty]: Start isEmpty. Operand 3918 states and 5041 transitions. [2020-07-20 14:05:25,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-07-20 14:05:25,524 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:05:25,525 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:05:25,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:05:25,739 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:05:25,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:05:25,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1715843109, now seen corresponding path program 1 times [2020-07-20 14:05:25,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:05:25,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918808034] [2020-07-20 14:05:25,741 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:05:25,872 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:05:25,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:05:25,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:05:25,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:05:25,993 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-07-20 14:05:25,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:05:26,095 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-07-20 14:05:26,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918808034] [2020-07-20 14:05:26,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:05:26,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-20 14:05:26,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712629007] [2020-07-20 14:05:26,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 14:05:26,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:05:26,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 14:05:26,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 14:05:26,098 INFO L87 Difference]: Start difference. First operand 3918 states and 5041 transitions. Second operand 6 states. [2020-07-20 14:05:27,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:05:27,149 INFO L93 Difference]: Finished difference Result 11529 states and 16127 transitions. [2020-07-20 14:05:27,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 14:05:27,150 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 185 [2020-07-20 14:05:27,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:05:27,196 INFO L225 Difference]: With dead ends: 11529 [2020-07-20 14:05:27,197 INFO L226 Difference]: Without dead ends: 7621 [2020-07-20 14:05:27,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 366 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-20 14:05:27,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7621 states. [2020-07-20 14:05:27,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7621 to 7214. [2020-07-20 14:05:27,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7214 states. [2020-07-20 14:05:27,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7214 states to 7214 states and 9244 transitions. [2020-07-20 14:05:27,552 INFO L78 Accepts]: Start accepts. Automaton has 7214 states and 9244 transitions. Word has length 185 [2020-07-20 14:05:27,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:05:27,553 INFO L479 AbstractCegarLoop]: Abstraction has 7214 states and 9244 transitions. [2020-07-20 14:05:27,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 14:05:27,553 INFO L276 IsEmpty]: Start isEmpty. Operand 7214 states and 9244 transitions. [2020-07-20 14:05:27,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-07-20 14:05:27,578 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:05:27,578 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-07-20 14:05:27,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:05:27,794 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:05:27,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:05:27,795 INFO L82 PathProgramCache]: Analyzing trace with hash 2145011220, now seen corresponding path program 1 times [2020-07-20 14:05:27,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:05:27,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565549439] [2020-07-20 14:05:27,796 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:05:27,940 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:05:27,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:05:27,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 14:05:27,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:05:28,021 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-07-20 14:05:28,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:05:28,095 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 121 proven. 26 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-07-20 14:05:28,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565549439] [2020-07-20 14:05:28,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:05:28,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-20 14:05:28,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138408816] [2020-07-20 14:05:28,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 14:05:28,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:05:28,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 14:05:28,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 14:05:28,099 INFO L87 Difference]: Start difference. First operand 7214 states and 9244 transitions. Second operand 7 states. [2020-07-20 14:05:29,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:05:29,572 INFO L93 Difference]: Finished difference Result 10930 states and 13967 transitions. [2020-07-20 14:05:29,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 14:05:29,573 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 187 [2020-07-20 14:05:29,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:05:29,576 INFO L225 Difference]: With dead ends: 10930 [2020-07-20 14:05:29,576 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 14:05:29,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-07-20 14:05:29,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 14:05:29,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 14:05:29,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 14:05:29,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 14:05:29,599 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 187 [2020-07-20 14:05:29,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:05:29,599 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 14:05:29,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 14:05:29,599 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 14:05:29,599 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 14:05:29,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:05:29,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 14:05:30,818 WARN L193 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 312 DAG size of output: 173 [2020-07-20 14:05:31,405 WARN L193 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 312 DAG size of output: 173 [2020-07-20 14:05:32,142 WARN L193 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 74 [2020-07-20 14:05:32,889 WARN L193 SmtUtils]: Spent 734.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 35 [2020-07-20 14:05:33,671 WARN L193 SmtUtils]: Spent 779.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 35 [2020-07-20 14:05:33,675 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 14:05:33,675 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a8~0 |old(~a8~0)|) (<= ~a16~0 |old(~a16~0)|) (= ~a7~0 |old(~a7~0)|) (<= ~a20~0 |old(~a20~0)|) (<= |old(~a16~0)| ~a16~0)) [2020-07-20 14:05:33,676 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 14:05:33,676 INFO L268 CegarLoopResult]: For program point L333(lines 333 390) no Hoare annotation was computed. [2020-07-20 14:05:33,676 INFO L268 CegarLoopResult]: For program point L102(lines 102 390) no Hoare annotation was computed. [2020-07-20 14:05:33,676 INFO L268 CegarLoopResult]: For program point L565-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,677 INFO L268 CegarLoopResult]: For program point L532-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,677 INFO L268 CegarLoopResult]: For program point L499-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,677 INFO L268 CegarLoopResult]: For program point L466-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,677 INFO L268 CegarLoopResult]: For program point L433-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,677 INFO L268 CegarLoopResult]: For program point L400-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,678 INFO L268 CegarLoopResult]: For program point L268(lines 268 390) no Hoare annotation was computed. [2020-07-20 14:05:33,678 INFO L268 CegarLoopResult]: For program point L136(lines 136 390) no Hoare annotation was computed. [2020-07-20 14:05:33,678 INFO L268 CegarLoopResult]: For program point L566(line 566) no Hoare annotation was computed. [2020-07-20 14:05:33,678 INFO L268 CegarLoopResult]: For program point L533(line 533) no Hoare annotation was computed. [2020-07-20 14:05:33,678 INFO L268 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2020-07-20 14:05:33,678 INFO L268 CegarLoopResult]: For program point L467(line 467) no Hoare annotation was computed. [2020-07-20 14:05:33,679 INFO L268 CegarLoopResult]: For program point L434(line 434) no Hoare annotation was computed. [2020-07-20 14:05:33,679 INFO L268 CegarLoopResult]: For program point L401(line 401) no Hoare annotation was computed. [2020-07-20 14:05:33,679 INFO L268 CegarLoopResult]: For program point L203(lines 203 390) no Hoare annotation was computed. [2020-07-20 14:05:33,679 INFO L268 CegarLoopResult]: For program point L72(lines 72 390) no Hoare annotation was computed. [2020-07-20 14:05:33,679 INFO L268 CegarLoopResult]: For program point L568-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,679 INFO L268 CegarLoopResult]: For program point L535-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,679 INFO L268 CegarLoopResult]: For program point L502-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,680 INFO L268 CegarLoopResult]: For program point L469-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,680 INFO L268 CegarLoopResult]: For program point L436-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,680 INFO L268 CegarLoopResult]: For program point L403-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,680 INFO L268 CegarLoopResult]: For program point L337(lines 337 390) no Hoare annotation was computed. [2020-07-20 14:05:33,680 INFO L268 CegarLoopResult]: For program point L238(lines 238 390) no Hoare annotation was computed. [2020-07-20 14:05:33,680 INFO L268 CegarLoopResult]: For program point L569(line 569) no Hoare annotation was computed. [2020-07-20 14:05:33,680 INFO L268 CegarLoopResult]: For program point L536(line 536) no Hoare annotation was computed. [2020-07-20 14:05:33,681 INFO L268 CegarLoopResult]: For program point L503(line 503) no Hoare annotation was computed. [2020-07-20 14:05:33,681 INFO L268 CegarLoopResult]: For program point L470(line 470) no Hoare annotation was computed. [2020-07-20 14:05:33,681 INFO L268 CegarLoopResult]: For program point L437(line 437) no Hoare annotation was computed. [2020-07-20 14:05:33,681 INFO L268 CegarLoopResult]: For program point L404(line 404) no Hoare annotation was computed. [2020-07-20 14:05:33,681 INFO L268 CegarLoopResult]: For program point L173(lines 173 390) no Hoare annotation was computed. [2020-07-20 14:05:33,681 INFO L268 CegarLoopResult]: For program point L140(lines 140 390) no Hoare annotation was computed. [2020-07-20 14:05:33,681 INFO L268 CegarLoopResult]: For program point L372(lines 372 390) no Hoare annotation was computed. [2020-07-20 14:05:33,681 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 452) no Hoare annotation was computed. [2020-07-20 14:05:33,682 INFO L268 CegarLoopResult]: For program point L306(lines 306 390) no Hoare annotation was computed. [2020-07-20 14:05:33,682 INFO L268 CegarLoopResult]: For program point L273(lines 273 390) no Hoare annotation was computed. [2020-07-20 14:05:33,682 INFO L268 CegarLoopResult]: For program point L108(lines 108 390) no Hoare annotation was computed. [2020-07-20 14:05:33,682 INFO L268 CegarLoopResult]: For program point L571-1(lines 571 573) no Hoare annotation was computed. [2020-07-20 14:05:33,682 INFO L268 CegarLoopResult]: For program point L538-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,682 INFO L268 CegarLoopResult]: For program point L505-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,682 INFO L268 CegarLoopResult]: For program point L472-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,682 INFO L268 CegarLoopResult]: For program point L439-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,683 INFO L268 CegarLoopResult]: For program point L406-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,683 INFO L268 CegarLoopResult]: For program point L208(lines 208 390) no Hoare annotation was computed. [2020-07-20 14:05:33,683 INFO L268 CegarLoopResult]: For program point L43(lines 43 390) no Hoare annotation was computed. [2020-07-20 14:05:33,683 INFO L268 CegarLoopResult]: For program point L572(line 572) no Hoare annotation was computed. [2020-07-20 14:05:33,683 INFO L268 CegarLoopResult]: For program point L539(line 539) no Hoare annotation was computed. [2020-07-20 14:05:33,683 INFO L268 CegarLoopResult]: For program point L506(line 506) no Hoare annotation was computed. [2020-07-20 14:05:33,683 INFO L268 CegarLoopResult]: For program point L473(line 473) no Hoare annotation was computed. [2020-07-20 14:05:33,683 INFO L268 CegarLoopResult]: For program point L440(line 440) no Hoare annotation was computed. [2020-07-20 14:05:33,683 INFO L268 CegarLoopResult]: For program point L407(line 407) no Hoare annotation was computed. [2020-07-20 14:05:33,683 INFO L268 CegarLoopResult]: For program point L144(lines 144 390) no Hoare annotation was computed. [2020-07-20 14:05:33,683 INFO L268 CegarLoopResult]: For program point L541-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,684 INFO L268 CegarLoopResult]: For program point L508-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,684 INFO L268 CegarLoopResult]: For program point L475-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,684 INFO L268 CegarLoopResult]: For program point L442-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,684 INFO L268 CegarLoopResult]: For program point L409-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,684 INFO L268 CegarLoopResult]: For program point L178(lines 178 390) no Hoare annotation was computed. [2020-07-20 14:05:33,684 INFO L268 CegarLoopResult]: For program point L542(line 542) no Hoare annotation was computed. [2020-07-20 14:05:33,684 INFO L268 CegarLoopResult]: For program point L509(line 509) no Hoare annotation was computed. [2020-07-20 14:05:33,684 INFO L268 CegarLoopResult]: For program point L476(line 476) no Hoare annotation was computed. [2020-07-20 14:05:33,684 INFO L268 CegarLoopResult]: For program point L443(line 443) no Hoare annotation was computed. [2020-07-20 14:05:33,685 INFO L268 CegarLoopResult]: For program point L410(line 410) no Hoare annotation was computed. [2020-07-20 14:05:33,685 INFO L268 CegarLoopResult]: For program point L377(lines 377 390) no Hoare annotation was computed. [2020-07-20 14:05:33,685 INFO L268 CegarLoopResult]: For program point L278(lines 278 390) no Hoare annotation was computed. [2020-07-20 14:05:33,685 INFO L268 CegarLoopResult]: For program point L245(lines 245 390) no Hoare annotation was computed. [2020-07-20 14:05:33,685 INFO L268 CegarLoopResult]: For program point L80(lines 80 390) no Hoare annotation was computed. [2020-07-20 14:05:33,685 INFO L268 CegarLoopResult]: For program point L345(lines 345 390) no Hoare annotation was computed. [2020-07-20 14:05:33,685 INFO L268 CegarLoopResult]: For program point L312(lines 312 390) no Hoare annotation was computed. [2020-07-20 14:05:33,685 INFO L268 CegarLoopResult]: For program point L114(lines 114 390) no Hoare annotation was computed. [2020-07-20 14:05:33,686 INFO L268 CegarLoopResult]: For program point L544-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,686 INFO L268 CegarLoopResult]: For program point L511-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,686 INFO L268 CegarLoopResult]: For program point L478-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,686 INFO L268 CegarLoopResult]: For program point L445-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,686 INFO L268 CegarLoopResult]: For program point L412-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,686 INFO L268 CegarLoopResult]: For program point L214(lines 214 390) no Hoare annotation was computed. [2020-07-20 14:05:33,686 INFO L268 CegarLoopResult]: For program point L148(lines 148 390) no Hoare annotation was computed. [2020-07-20 14:05:33,686 INFO L268 CegarLoopResult]: For program point L49(lines 49 390) no Hoare annotation was computed. [2020-07-20 14:05:33,687 INFO L268 CegarLoopResult]: For program point L545(line 545) no Hoare annotation was computed. [2020-07-20 14:05:33,687 INFO L268 CegarLoopResult]: For program point L512(line 512) no Hoare annotation was computed. [2020-07-20 14:05:33,687 INFO L268 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2020-07-20 14:05:33,687 INFO L268 CegarLoopResult]: For program point L446(line 446) no Hoare annotation was computed. [2020-07-20 14:05:33,687 INFO L268 CegarLoopResult]: For program point L413(line 413) no Hoare annotation was computed. [2020-07-20 14:05:33,687 INFO L268 CegarLoopResult]: For program point L84(lines 84 390) no Hoare annotation was computed. [2020-07-20 14:05:33,687 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,687 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,687 INFO L268 CegarLoopResult]: For program point L547-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,688 INFO L268 CegarLoopResult]: For program point L514-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,688 INFO L268 CegarLoopResult]: For program point L481-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,688 INFO L268 CegarLoopResult]: For program point L448-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,688 INFO L268 CegarLoopResult]: For program point L382(lines 382 390) no Hoare annotation was computed. [2020-07-20 14:05:33,688 INFO L268 CegarLoopResult]: For program point L415-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,688 INFO L268 CegarLoopResult]: For program point L316(lines 316 390) no Hoare annotation was computed. [2020-07-20 14:05:33,688 INFO L268 CegarLoopResult]: For program point L250(lines 250 390) no Hoare annotation was computed. [2020-07-20 14:05:33,688 INFO L268 CegarLoopResult]: For program point L548(line 548) no Hoare annotation was computed. [2020-07-20 14:05:33,688 INFO L268 CegarLoopResult]: For program point L515(line 515) no Hoare annotation was computed. [2020-07-20 14:05:33,689 INFO L268 CegarLoopResult]: For program point L482(line 482) no Hoare annotation was computed. [2020-07-20 14:05:33,689 INFO L268 CegarLoopResult]: For program point L449(line 449) no Hoare annotation was computed. [2020-07-20 14:05:33,689 INFO L268 CegarLoopResult]: For program point L416(line 416) no Hoare annotation was computed. [2020-07-20 14:05:33,689 INFO L268 CegarLoopResult]: For program point L218(lines 218 390) no Hoare annotation was computed. [2020-07-20 14:05:33,689 INFO L268 CegarLoopResult]: For program point L152(lines 152 390) no Hoare annotation was computed. [2020-07-20 14:05:33,689 INFO L268 CegarLoopResult]: For program point L119(lines 119 390) no Hoare annotation was computed. [2020-07-20 14:05:33,689 INFO L268 CegarLoopResult]: For program point L318(lines 318 390) no Hoare annotation was computed. [2020-07-20 14:05:33,689 INFO L268 CegarLoopResult]: For program point L186(lines 186 390) no Hoare annotation was computed. [2020-07-20 14:05:33,689 INFO L268 CegarLoopResult]: For program point L54(lines 54 390) no Hoare annotation was computed. [2020-07-20 14:05:33,690 INFO L268 CegarLoopResult]: For program point L550-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,690 INFO L268 CegarLoopResult]: For program point L517-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,690 INFO L268 CegarLoopResult]: For program point L484-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,690 INFO L268 CegarLoopResult]: For program point L451-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,690 INFO L268 CegarLoopResult]: For program point L418-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,690 INFO L268 CegarLoopResult]: For program point L286(lines 286 390) no Hoare annotation was computed. [2020-07-20 14:05:33,690 INFO L268 CegarLoopResult]: For program point L551(line 551) no Hoare annotation was computed. [2020-07-20 14:05:33,690 INFO L268 CegarLoopResult]: For program point L518(line 518) no Hoare annotation was computed. [2020-07-20 14:05:33,691 INFO L268 CegarLoopResult]: For program point L485(line 485) no Hoare annotation was computed. [2020-07-20 14:05:33,691 INFO L268 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2020-07-20 14:05:33,691 INFO L268 CegarLoopResult]: For program point L419(line 419) no Hoare annotation was computed. [2020-07-20 14:05:33,691 INFO L268 CegarLoopResult]: For program point L353(lines 353 390) no Hoare annotation was computed. [2020-07-20 14:05:33,691 INFO L268 CegarLoopResult]: For program point L189(lines 189 390) no Hoare annotation was computed. [2020-07-20 14:05:33,691 INFO L268 CegarLoopResult]: For program point L553-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,691 INFO L268 CegarLoopResult]: For program point L520-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,691 INFO L268 CegarLoopResult]: For program point L487-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,692 INFO L268 CegarLoopResult]: For program point L454-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,692 INFO L268 CegarLoopResult]: For program point L421-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,692 INFO L268 CegarLoopResult]: For program point L355(lines 355 390) no Hoare annotation was computed. [2020-07-20 14:05:33,692 INFO L268 CegarLoopResult]: For program point L256(lines 256 390) no Hoare annotation was computed. [2020-07-20 14:05:33,692 INFO L268 CegarLoopResult]: For program point L223(lines 223 390) no Hoare annotation was computed. [2020-07-20 14:05:33,692 INFO L268 CegarLoopResult]: For program point L124(lines 124 390) no Hoare annotation was computed. [2020-07-20 14:05:33,692 INFO L268 CegarLoopResult]: For program point L554(line 554) no Hoare annotation was computed. [2020-07-20 14:05:33,692 INFO L268 CegarLoopResult]: For program point L521(line 521) no Hoare annotation was computed. [2020-07-20 14:05:33,693 INFO L268 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2020-07-20 14:05:33,693 INFO L268 CegarLoopResult]: For program point L455(line 455) no Hoare annotation was computed. [2020-07-20 14:05:33,693 INFO L268 CegarLoopResult]: For program point L422(line 422) no Hoare annotation was computed. [2020-07-20 14:05:33,693 INFO L268 CegarLoopResult]: For program point L92(lines 92 390) no Hoare annotation was computed. [2020-07-20 14:05:33,693 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 30 575) the Hoare annotation is: (let ((.cse17 (not (<= |old(~a8~0)| 13))) (.cse6 (not (<= |old(~a16~0)| 5))) (.cse4 (<= ~a16~0 5)) (.cse0 (<= ~a8~0 |old(~a8~0)|)) (.cse11 (<= ~a16~0 |old(~a16~0)|)) (.cse16 (<= ~a8~0 13))) (let ((.cse8 (not (<= 5 |old(~a16~0)|))) (.cse7 (not (<= |old(~a20~0)| 0))) (.cse10 (not (<= |old(~a7~0)| 0))) (.cse1 (= 1 ~a7~0)) (.cse2 (<= ~a20~0 |old(~a20~0)|)) (.cse13 (or (and .cse0 .cse11 .cse4 (< ~a8~0 15)) (and .cse0 .cse11 .cse16))) (.cse3 (<= ~a17~0 0)) (.cse12 (<= |old(~a16~0)| ~a16~0)) (.cse5 (not (= 1 |old(~a7~0)|))) (.cse14 (and .cse17 (or .cse6 (not (< |old(~a8~0)| 15))))) (.cse9 (not (<= |old(~a17~0)| 0))) (.cse15 (not (<= |old(~a16~0)| 4)))) (and (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (<= 5 ~a16~0)) .cse5 .cse6 .cse7 .cse8 .cse9) (or .cse10 (and .cse0 .cse11 (= ~a7~0 |old(~a7~0)|) .cse2 .cse12)) (or (and .cse13 .cse1 .cse2 .cse12) .cse5 .cse14 .cse8) (or .cse5 .cse7 (and .cse0 .cse11 .cse1 .cse2 .cse12 .cse3) .cse15 .cse9) (or .cse3 .cse10 .cse9) (or (not (<= 15 |old(~a8~0)|)) .cse10 (<= 15 ~a8~0)) (or (and .cse1 .cse2 (or (and .cse13 .cse12 .cse3) (and .cse0 .cse11 .cse16 .cse12 (<= ~a16~0 4)))) .cse5 (and (or .cse14 .cse9) (or .cse17 .cse15)))))) [2020-07-20 14:05:33,693 INFO L268 CegarLoopResult]: For program point L324(lines 324 390) no Hoare annotation was computed. [2020-07-20 14:05:33,693 INFO L268 CegarLoopResult]: For program point L556-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,693 INFO L268 CegarLoopResult]: For program point L523-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,694 INFO L268 CegarLoopResult]: For program point L490-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,694 INFO L268 CegarLoopResult]: For program point L457-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,694 INFO L268 CegarLoopResult]: For program point L391(lines 391 393) no Hoare annotation was computed. [2020-07-20 14:05:33,694 INFO L268 CegarLoopResult]: For program point L424-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,694 INFO L268 CegarLoopResult]: For program point L391-2(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,694 INFO L268 CegarLoopResult]: For program point L292(lines 292 390) no Hoare annotation was computed. [2020-07-20 14:05:33,694 INFO L268 CegarLoopResult]: For program point L160(lines 160 390) no Hoare annotation was computed. [2020-07-20 14:05:33,694 INFO L268 CegarLoopResult]: For program point L557(line 557) no Hoare annotation was computed. [2020-07-20 14:05:33,694 INFO L268 CegarLoopResult]: For program point L524(line 524) no Hoare annotation was computed. [2020-07-20 14:05:33,695 INFO L268 CegarLoopResult]: For program point L491(line 491) no Hoare annotation was computed. [2020-07-20 14:05:33,695 INFO L268 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2020-07-20 14:05:33,695 INFO L268 CegarLoopResult]: For program point L425(line 425) no Hoare annotation was computed. [2020-07-20 14:05:33,695 INFO L268 CegarLoopResult]: For program point L392(line 392) no Hoare annotation was computed. [2020-07-20 14:05:33,695 INFO L268 CegarLoopResult]: For program point L194(lines 194 390) no Hoare annotation was computed. [2020-07-20 14:05:33,695 INFO L268 CegarLoopResult]: For program point L62(lines 62 390) no Hoare annotation was computed. [2020-07-20 14:05:33,695 INFO L268 CegarLoopResult]: For program point L261(lines 261 390) no Hoare annotation was computed. [2020-07-20 14:05:33,695 INFO L268 CegarLoopResult]: For program point L129(lines 129 390) no Hoare annotation was computed. [2020-07-20 14:05:33,695 INFO L268 CegarLoopResult]: For program point L559-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,696 INFO L268 CegarLoopResult]: For program point L526-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,696 INFO L268 CegarLoopResult]: For program point L493-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,696 INFO L268 CegarLoopResult]: For program point L460-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,696 INFO L268 CegarLoopResult]: For program point L427-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,696 INFO L268 CegarLoopResult]: For program point L361(lines 361 390) no Hoare annotation was computed. [2020-07-20 14:05:33,696 INFO L268 CegarLoopResult]: For program point L394-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,696 INFO L268 CegarLoopResult]: For program point L97(lines 97 390) no Hoare annotation was computed. [2020-07-20 14:05:33,696 INFO L268 CegarLoopResult]: For program point L31(lines 31 390) no Hoare annotation was computed. [2020-07-20 14:05:33,696 INFO L268 CegarLoopResult]: For program point L560(line 560) no Hoare annotation was computed. [2020-07-20 14:05:33,696 INFO L268 CegarLoopResult]: For program point L527(line 527) no Hoare annotation was computed. [2020-07-20 14:05:33,696 INFO L268 CegarLoopResult]: For program point L494(line 494) no Hoare annotation was computed. [2020-07-20 14:05:33,696 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-20 14:05:33,696 INFO L268 CegarLoopResult]: For program point L428(line 428) no Hoare annotation was computed. [2020-07-20 14:05:33,696 INFO L268 CegarLoopResult]: For program point L395(line 395) no Hoare annotation was computed. [2020-07-20 14:05:33,696 INFO L268 CegarLoopResult]: For program point L329(lines 329 390) no Hoare annotation was computed. [2020-07-20 14:05:33,697 INFO L268 CegarLoopResult]: For program point L197(lines 197 390) no Hoare annotation was computed. [2020-07-20 14:05:33,697 INFO L268 CegarLoopResult]: For program point L65(lines 65 390) no Hoare annotation was computed. [2020-07-20 14:05:33,697 INFO L268 CegarLoopResult]: For program point L363(lines 363 390) no Hoare annotation was computed. [2020-07-20 14:05:33,697 INFO L268 CegarLoopResult]: For program point L231(lines 231 390) no Hoare annotation was computed. [2020-07-20 14:05:33,697 INFO L268 CegarLoopResult]: For program point L165(lines 165 390) no Hoare annotation was computed. [2020-07-20 14:05:33,697 INFO L268 CegarLoopResult]: For program point L562-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,697 INFO L268 CegarLoopResult]: For program point L529-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,697 INFO L268 CegarLoopResult]: For program point L496-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,697 INFO L268 CegarLoopResult]: For program point L463-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,697 INFO L268 CegarLoopResult]: For program point L430-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,697 INFO L268 CegarLoopResult]: For program point L397-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 14:05:33,698 INFO L268 CegarLoopResult]: For program point L265(lines 265 390) no Hoare annotation was computed. [2020-07-20 14:05:33,698 INFO L268 CegarLoopResult]: For program point L563(line 563) no Hoare annotation was computed. [2020-07-20 14:05:33,698 INFO L268 CegarLoopResult]: For program point L530(line 530) no Hoare annotation was computed. [2020-07-20 14:05:33,698 INFO L268 CegarLoopResult]: For program point L497(line 497) no Hoare annotation was computed. [2020-07-20 14:05:33,698 INFO L268 CegarLoopResult]: For program point L464(line 464) no Hoare annotation was computed. [2020-07-20 14:05:33,698 INFO L268 CegarLoopResult]: For program point L431(line 431) no Hoare annotation was computed. [2020-07-20 14:05:33,698 INFO L268 CegarLoopResult]: For program point L398(line 398) no Hoare annotation was computed. [2020-07-20 14:05:33,698 INFO L268 CegarLoopResult]: For program point L365(lines 365 390) no Hoare annotation was computed. [2020-07-20 14:05:33,698 INFO L268 CegarLoopResult]: For program point L299(lines 299 390) no Hoare annotation was computed. [2020-07-20 14:05:33,698 INFO L268 CegarLoopResult]: For program point L35(lines 35 390) no Hoare annotation was computed. [2020-07-20 14:05:33,698 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 14:05:33,698 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a7~0 0) (<= ~a16~0 5) (<= 5 ~a16~0)) [2020-07-20 14:05:33,698 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 14:05:33,698 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 14:05:33,699 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 577 594) the Hoare annotation is: (or (and (<= ~a8~0 |old(~a8~0)|) (= ~a7~0 |old(~a7~0)|) (<= ~a20~0 |old(~a20~0)|) (<= ~a16~0 5) (<= 5 ~a16~0)) (not (<= |old(~a7~0)| 0)) (not (<= |old(~a16~0)| 5)) (not (<= 5 |old(~a16~0)|))) [2020-07-20 14:05:33,699 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 577 594) no Hoare annotation was computed. [2020-07-20 14:05:33,699 INFO L264 CegarLoopResult]: At program point L591(line 591) the Hoare annotation is: (let ((.cse2 (<= ~a8~0 13)) (.cse4 (<= ~a16~0 5))) (let ((.cse1 (or .cse2 (and .cse4 (< ~a8~0 15)))) (.cse0 (= 1 ~a7~0)) (.cse3 (<= ~a17~0 0))) (or (and .cse0 (<= 5 ~a16~0) .cse1) (<= ~a7~0 0) (not (<= |old(~a7~0)| 0)) (not (<= |old(~a16~0)| 5)) (and (or .cse2 (and .cse3 .cse1)) .cse0) (not (<= 5 |old(~a16~0)|)) (and .cse0 .cse3 .cse4 (<= ~a20~0 0))))) [2020-07-20 14:05:33,699 INFO L268 CegarLoopResult]: For program point L591-1(line 591) no Hoare annotation was computed. [2020-07-20 14:05:33,699 INFO L268 CegarLoopResult]: For program point L588(line 588) no Hoare annotation was computed. [2020-07-20 14:05:33,699 INFO L264 CegarLoopResult]: At program point L583-2(lines 583 593) the Hoare annotation is: (let ((.cse2 (<= ~a8~0 13)) (.cse4 (<= ~a16~0 5))) (let ((.cse1 (or .cse2 (and .cse4 (< ~a8~0 15)))) (.cse0 (= 1 ~a7~0)) (.cse3 (<= ~a17~0 0))) (or (and .cse0 (<= 5 ~a16~0) .cse1) (<= ~a7~0 0) (not (<= |old(~a7~0)| 0)) (not (<= |old(~a16~0)| 5)) (and (or .cse2 (and .cse3 .cse1)) .cse0) (not (<= 5 |old(~a16~0)|)) (and .cse0 .cse3 .cse4 (<= ~a20~0 0))))) [2020-07-20 14:05:33,699 INFO L268 CegarLoopResult]: For program point L583-3(lines 577 594) no Hoare annotation was computed. [2020-07-20 14:05:33,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 02:05:33 BoogieIcfgContainer [2020-07-20 14:05:33,717 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 14:05:33,720 INFO L168 Benchmark]: Toolchain (without parser) took 20473.60 ms. Allocated memory was 137.4 MB in the beginning and 609.7 MB in the end (delta: 472.4 MB). Free memory was 100.3 MB in the beginning and 486.5 MB in the end (delta: -386.2 MB). Peak memory consumption was 450.9 MB. Max. memory is 7.1 GB. [2020-07-20 14:05:33,720 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 137.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 14:05:33,721 INFO L168 Benchmark]: CACSL2BoogieTranslator took 790.45 ms. Allocated memory was 137.4 MB in the beginning and 203.4 MB in the end (delta: 66.1 MB). Free memory was 99.9 MB in the beginning and 167.1 MB in the end (delta: -67.2 MB). Peak memory consumption was 34.6 MB. Max. memory is 7.1 GB. [2020-07-20 14:05:33,722 INFO L168 Benchmark]: Boogie Preprocessor took 93.86 ms. Allocated memory is still 203.4 MB. Free memory was 167.1 MB in the beginning and 161.9 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 7.1 GB. [2020-07-20 14:05:33,723 INFO L168 Benchmark]: RCFGBuilder took 1170.33 ms. Allocated memory was 203.4 MB in the beginning and 234.4 MB in the end (delta: 30.9 MB). Free memory was 161.9 MB in the beginning and 177.1 MB in the end (delta: -15.2 MB). Peak memory consumption was 82.2 MB. Max. memory is 7.1 GB. [2020-07-20 14:05:33,724 INFO L168 Benchmark]: TraceAbstraction took 18412.50 ms. Allocated memory was 234.4 MB in the beginning and 609.7 MB in the end (delta: 375.4 MB). Free memory was 175.6 MB in the beginning and 486.5 MB in the end (delta: -310.9 MB). Peak memory consumption was 429.2 MB. Max. memory is 7.1 GB. [2020-07-20 14:05:33,728 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 137.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 790.45 ms. Allocated memory was 137.4 MB in the beginning and 203.4 MB in the end (delta: 66.1 MB). Free memory was 99.9 MB in the beginning and 167.1 MB in the end (delta: -67.2 MB). Peak memory consumption was 34.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 93.86 ms. Allocated memory is still 203.4 MB. Free memory was 167.1 MB in the beginning and 161.9 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1170.33 ms. Allocated memory was 203.4 MB in the beginning and 234.4 MB in the end (delta: 30.9 MB). Free memory was 161.9 MB in the beginning and 177.1 MB in the end (delta: -15.2 MB). Peak memory consumption was 82.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 18412.50 ms. Allocated memory was 234.4 MB in the beginning and 609.7 MB in the end (delta: 375.4 MB). Free memory was 175.6 MB in the beginning and 486.5 MB in the end (delta: -310.9 MB). Peak memory consumption was 429.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 452]: 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: (((((((1 == a7 && 5 <= a16) && (a8 <= 13 || (a16 <= 5 && a8 < 15))) || a7 <= 0) || !(\old(a7) <= 0)) || !(\old(a16) <= 5)) || ((a8 <= 13 || (a17 <= 0 && (a8 <= 13 || (a16 <= 5 && a8 < 15)))) && 1 == a7)) || !(5 <= \old(a16))) || (((1 == a7 && a17 <= 0) && a16 <= 5) && a20 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.4s, OverallIterations: 8, TraceHistogramMax: 5, AutomataDifference: 9.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 455 SDtfs, 3075 SDslu, 362 SDs, 0 SdLazy, 7717 SolverSat, 1116 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2031 GetRequests, 1980 SyntacticMatches, 5 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7214occurred 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: 0.8s AutomataMinimizationTime, 8 MinimizatonAttempts, 2634 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 188 PreInvPairs, 302 NumberOfFragments, 464 HoareAnnotationTreeSize, 188 FomulaSimplifications, 94785 FormulaSimplificationTreeSizeReduction, 1.5s HoareSimplificationTime, 7 FomulaSimplificationsInter, 33155 FormulaSimplificationTreeSizeReductionInter, 2.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 1183 NumberOfCodeBlocks, 1183 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 1995 ConstructedInterpolants, 0 QuantifiedInterpolants, 541727 SizeOfPredicates, 8 NumberOfNonLiveVariables, 3694 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 13 InterpolantComputations, 3 PerfectInterpolantSequences, 1214/1289 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...