/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 13:53:56,281 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 13:53:56,283 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 13:53:56,300 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 13:53:56,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 13:53:56,302 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 13:53:56,303 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 13:53:56,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 13:53:56,306 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 13:53:56,307 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 13:53:56,308 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 13:53:56,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 13:53:56,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 13:53:56,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 13:53:56,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 13:53:56,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 13:53:56,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 13:53:56,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 13:53:56,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 13:53:56,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 13:53:56,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 13:53:56,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 13:53:56,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 13:53:56,324 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 13:53:56,327 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 13:53:56,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 13:53:56,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 13:53:56,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 13:53:56,337 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 13:53:56,355 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 13:53:56,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 13:53:56,357 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 13:53:56,357 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 13:53:56,357 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 13:53:56,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 13:53:56,358 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 13:53:56,358 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 13:53:56,358 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 13:53:56,358 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 13:53:56,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 13:53:56,359 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 13:53:56,359 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 13:53:56,359 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 13:53:56,359 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 13:53:56,359 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 13:53:56,360 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 13:53:56,360 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 13:53:56,360 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 13:53:56,360 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 13:53:56,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 13:53:56,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 13:53:56,361 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 13:53:56,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 13:53:56,361 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 13:53:56,361 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 13:53:56,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:53:56,362 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 13:53:56,362 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 13:53:56,362 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 13:53:56,638 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 13:53:56,652 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 13:53:56,656 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 13:53:56,657 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 13:53:56,657 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 13:53:56,658 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label34.c [2020-07-21 13:53:56,720 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1552c0d37/caab7732c9ab4a998756d21e86212ad8/FLAGe32ca2332 [2020-07-21 13:53:57,312 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 13:53:57,313 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label34.c [2020-07-21 13:53:57,329 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1552c0d37/caab7732c9ab4a998756d21e86212ad8/FLAGe32ca2332 [2020-07-21 13:53:57,545 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1552c0d37/caab7732c9ab4a998756d21e86212ad8 [2020-07-21 13:53:57,553 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 13:53:57,555 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 13:53:57,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 13:53:57,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 13:53:57,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 13:53:57,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:53:57" (1/1) ... [2020-07-21 13:53:57,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b1edf7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:53:57, skipping insertion in model container [2020-07-21 13:53:57,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:53:57" (1/1) ... [2020-07-21 13:53:57,574 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 13:53:57,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 13:53:58,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 13:53:58,058 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 13:53:58,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 13:53:58,293 INFO L208 MainTranslator]: Completed translation [2020-07-21 13:53:58,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:53:58 WrapperNode [2020-07-21 13:53:58,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 13:53:58,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 13:53:58,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 13:53:58,297 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 13:53:58,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:53:58" (1/1) ... [2020-07-21 13:53:58,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:53:58" (1/1) ... [2020-07-21 13:53:58,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:53:58" (1/1) ... [2020-07-21 13:53:58,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:53:58" (1/1) ... [2020-07-21 13:53:58,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:53:58" (1/1) ... [2020-07-21 13:53:58,394 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:53:58" (1/1) ... [2020-07-21 13:53:58,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:53:58" (1/1) ... [2020-07-21 13:53:58,409 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 13:53:58,410 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 13:53:58,410 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 13:53:58,410 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 13:53:58,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:53:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 13:53:58,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 13:53:58,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 13:53:58,491 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 13:53:58,491 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 13:53:58,492 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 13:53:58,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 13:53:58,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 13:53:58,492 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 13:53:58,493 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 13:53:58,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 13:53:58,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 13:53:59,796 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 13:53:59,797 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 13:53:59,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:53:59 BoogieIcfgContainer [2020-07-21 13:53:59,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 13:53:59,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 13:53:59,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 13:53:59,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 13:53:59,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:53:57" (1/3) ... [2020-07-21 13:53:59,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@384eee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:53:59, skipping insertion in model container [2020-07-21 13:53:59,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:53:58" (2/3) ... [2020-07-21 13:53:59,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@384eee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:53:59, skipping insertion in model container [2020-07-21 13:53:59,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:53:59" (3/3) ... [2020-07-21 13:53:59,819 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label34.c [2020-07-21 13:53:59,831 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 13:53:59,843 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 13:53:59,858 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 13:53:59,888 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 13:53:59,888 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 13:53:59,889 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 13:53:59,889 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 13:53:59,889 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 13:53:59,889 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 13:53:59,890 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 13:53:59,890 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 13:53:59,914 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-07-21 13:53:59,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-07-21 13:53:59,925 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:53:59,927 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] [2020-07-21 13:53:59,927 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:53:59,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:53:59,934 INFO L82 PathProgramCache]: Analyzing trace with hash -864026194, now seen corresponding path program 1 times [2020-07-21 13:53:59,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:53:59,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907716682] [2020-07-21 13:53:59,945 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:54:00,116 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:54:00,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:54:00,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 13:54:00,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:54:00,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:54:00,207 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:54:00,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907716682] [2020-07-21 13:54:00,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:54:00,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:54:00,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448682846] [2020-07-21 13:54:00,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:54:00,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:54:00,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:54:00,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:54:00,234 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2020-07-21 13:54:01,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:54:01,292 INFO L93 Difference]: Finished difference Result 586 states and 1004 transitions. [2020-07-21 13:54:01,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:54:01,296 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-07-21 13:54:01,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:54:01,329 INFO L225 Difference]: With dead ends: 586 [2020-07-21 13:54:01,329 INFO L226 Difference]: Without dead ends: 294 [2020-07-21 13:54:01,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:54:01,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-07-21 13:54:01,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2020-07-21 13:54:01,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-07-21 13:54:01,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 426 transitions. [2020-07-21 13:54:01,459 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 426 transitions. Word has length 69 [2020-07-21 13:54:01,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:54:01,460 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 426 transitions. [2020-07-21 13:54:01,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:54:01,460 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 426 transitions. [2020-07-21 13:54:01,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-07-21 13:54:01,476 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:54:01,477 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 13:54:01,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:54:01,692 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:54:01,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:54:01,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1649198670, now seen corresponding path program 1 times [2020-07-21 13:54:01,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:54:01,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309670657] [2020-07-21 13:54:01,695 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:54:01,802 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:54:01,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:54:01,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 13:54:01,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:54:01,897 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:54:01,898 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:54:01,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309670657] [2020-07-21 13:54:01,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:54:01,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 13:54:01,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956636848] [2020-07-21 13:54:01,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 13:54:01,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:54:01,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 13:54:01,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 13:54:01,902 INFO L87 Difference]: Start difference. First operand 294 states and 426 transitions. Second operand 5 states. [2020-07-21 13:54:02,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:54:02,951 INFO L93 Difference]: Finished difference Result 890 states and 1316 transitions. [2020-07-21 13:54:02,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 13:54:02,952 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-07-21 13:54:02,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:54:02,959 INFO L225 Difference]: With dead ends: 890 [2020-07-21 13:54:02,960 INFO L226 Difference]: Without dead ends: 602 [2020-07-21 13:54:02,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-21 13:54:02,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-07-21 13:54:02,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 590. [2020-07-21 13:54:02,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-07-21 13:54:03,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 775 transitions. [2020-07-21 13:54:03,002 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 775 transitions. Word has length 143 [2020-07-21 13:54:03,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:54:03,003 INFO L479 AbstractCegarLoop]: Abstraction has 590 states and 775 transitions. [2020-07-21 13:54:03,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 13:54:03,004 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 775 transitions. [2020-07-21 13:54:03,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-07-21 13:54:03,007 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:54:03,007 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 13:54:03,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:54:03,222 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:54:03,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:54:03,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1223274417, now seen corresponding path program 1 times [2020-07-21 13:54:03,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:54:03,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1976010347] [2020-07-21 13:54:03,225 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:54:03,359 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:54:03,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:54:03,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 13:54:03,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:54:03,431 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:54:03,431 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:54:03,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1976010347] [2020-07-21 13:54:03,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:54:03,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:54:03,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888645588] [2020-07-21 13:54:03,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:54:03,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:54:03,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:54:03,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:54:03,434 INFO L87 Difference]: Start difference. First operand 590 states and 775 transitions. Second operand 3 states. [2020-07-21 13:54:04,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:54:04,145 INFO L93 Difference]: Finished difference Result 1462 states and 1992 transitions. [2020-07-21 13:54:04,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:54:04,146 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-07-21 13:54:04,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:54:04,160 INFO L225 Difference]: With dead ends: 1462 [2020-07-21 13:54:04,161 INFO L226 Difference]: Without dead ends: 878 [2020-07-21 13:54:04,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:54:04,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2020-07-21 13:54:04,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2020-07-21 13:54:04,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 878 states. [2020-07-21 13:54:04,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1157 transitions. [2020-07-21 13:54:04,230 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1157 transitions. Word has length 148 [2020-07-21 13:54:04,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:54:04,233 INFO L479 AbstractCegarLoop]: Abstraction has 878 states and 1157 transitions. [2020-07-21 13:54:04,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:54:04,234 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1157 transitions. [2020-07-21 13:54:04,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-07-21 13:54:04,239 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:54:04,240 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 13:54:04,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:54:04,455 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:54:04,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:54:04,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1872939823, now seen corresponding path program 1 times [2020-07-21 13:54:04,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:54:04,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539797457] [2020-07-21 13:54:04,458 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:54:04,596 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:54:04,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:54:04,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 13:54:04,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:54:04,667 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:54:04,668 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:54:04,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539797457] [2020-07-21 13:54:04,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:54:04,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 13:54:04,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5292499] [2020-07-21 13:54:04,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 13:54:04,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:54:04,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 13:54:04,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 13:54:04,671 INFO L87 Difference]: Start difference. First operand 878 states and 1157 transitions. Second operand 5 states. [2020-07-21 13:54:05,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:54:05,606 INFO L93 Difference]: Finished difference Result 2370 states and 3201 transitions. [2020-07-21 13:54:05,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 13:54:05,607 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-07-21 13:54:05,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:54:05,618 INFO L225 Difference]: With dead ends: 2370 [2020-07-21 13:54:05,619 INFO L226 Difference]: Without dead ends: 1498 [2020-07-21 13:54:05,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-21 13:54:05,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2020-07-21 13:54:05,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1470. [2020-07-21 13:54:05,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1470 states. [2020-07-21 13:54:05,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 1802 transitions. [2020-07-21 13:54:05,710 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 1802 transitions. Word has length 164 [2020-07-21 13:54:05,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:54:05,710 INFO L479 AbstractCegarLoop]: Abstraction has 1470 states and 1802 transitions. [2020-07-21 13:54:05,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 13:54:05,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 1802 transitions. [2020-07-21 13:54:05,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-07-21 13:54:05,713 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:54:05,713 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 13:54:05,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:54:05,927 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:54:05,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:54:05,928 INFO L82 PathProgramCache]: Analyzing trace with hash 55468670, now seen corresponding path program 1 times [2020-07-21 13:54:05,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:54:05,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954534325] [2020-07-21 13:54:05,929 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:54:06,020 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:54:06,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:54:06,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 13:54:06,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:54:06,062 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:54:06,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:54:06,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954534325] [2020-07-21 13:54:06,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:54:06,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:54:06,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481325346] [2020-07-21 13:54:06,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:54:06,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:54:06,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:54:06,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:54:06,065 INFO L87 Difference]: Start difference. First operand 1470 states and 1802 transitions. Second operand 3 states. [2020-07-21 13:54:06,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:54:06,772 INFO L93 Difference]: Finished difference Result 3226 states and 4023 transitions. [2020-07-21 13:54:06,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:54:06,773 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 165 [2020-07-21 13:54:06,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:54:06,783 INFO L225 Difference]: With dead ends: 3226 [2020-07-21 13:54:06,783 INFO L226 Difference]: Without dead ends: 1762 [2020-07-21 13:54:06,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:54:06,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1762 states. [2020-07-21 13:54:06,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1762 to 1762. [2020-07-21 13:54:06,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1762 states. [2020-07-21 13:54:06,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1762 states to 1762 states and 2139 transitions. [2020-07-21 13:54:06,863 INFO L78 Accepts]: Start accepts. Automaton has 1762 states and 2139 transitions. Word has length 165 [2020-07-21 13:54:06,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:54:06,864 INFO L479 AbstractCegarLoop]: Abstraction has 1762 states and 2139 transitions. [2020-07-21 13:54:06,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:54:06,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1762 states and 2139 transitions. [2020-07-21 13:54:06,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-07-21 13:54:06,876 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:54:06,878 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:54:07,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:54:07,094 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:54:07,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:54:07,095 INFO L82 PathProgramCache]: Analyzing trace with hash 402226361, now seen corresponding path program 1 times [2020-07-21 13:54:07,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:54:07,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207136709] [2020-07-21 13:54:07,096 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:54:07,242 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:54:07,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:54:07,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 13:54:07,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:54:07,295 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-07-21 13:54:07,296 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:54:07,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1207136709] [2020-07-21 13:54:07,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:54:07,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:54:07,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068732099] [2020-07-21 13:54:07,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:54:07,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:54:07,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:54:07,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:54:07,300 INFO L87 Difference]: Start difference. First operand 1762 states and 2139 transitions. Second operand 3 states. [2020-07-21 13:54:07,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:54:07,992 INFO L93 Difference]: Finished difference Result 3806 states and 4699 transitions. [2020-07-21 13:54:07,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:54:07,995 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 236 [2020-07-21 13:54:07,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:54:08,008 INFO L225 Difference]: With dead ends: 3806 [2020-07-21 13:54:08,009 INFO L226 Difference]: Without dead ends: 2050 [2020-07-21 13:54:08,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:54:08,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2050 states. [2020-07-21 13:54:08,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2050 to 2050. [2020-07-21 13:54:08,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2050 states. [2020-07-21 13:54:08,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2050 states to 2050 states and 2517 transitions. [2020-07-21 13:54:08,107 INFO L78 Accepts]: Start accepts. Automaton has 2050 states and 2517 transitions. Word has length 236 [2020-07-21 13:54:08,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:54:08,108 INFO L479 AbstractCegarLoop]: Abstraction has 2050 states and 2517 transitions. [2020-07-21 13:54:08,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:54:08,108 INFO L276 IsEmpty]: Start isEmpty. Operand 2050 states and 2517 transitions. [2020-07-21 13:54:08,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-07-21 13:54:08,114 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:54:08,115 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:54:08,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:54:08,330 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:54:08,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:54:08,331 INFO L82 PathProgramCache]: Analyzing trace with hash 768453265, now seen corresponding path program 1 times [2020-07-21 13:54:08,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:54:08,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811521803] [2020-07-21 13:54:08,332 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:54:08,444 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:54:08,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:54:08,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 13:54:08,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:54:08,498 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-07-21 13:54:08,498 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:54:08,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811521803] [2020-07-21 13:54:08,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:54:08,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:54:08,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429631410] [2020-07-21 13:54:08,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:54:08,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:54:08,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:54:08,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:54:08,500 INFO L87 Difference]: Start difference. First operand 2050 states and 2517 transitions. Second operand 3 states. [2020-07-21 13:54:09,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:54:09,148 INFO L93 Difference]: Finished difference Result 3206 states and 3989 transitions. [2020-07-21 13:54:09,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:54:09,149 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 252 [2020-07-21 13:54:09,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:54:09,168 INFO L225 Difference]: With dead ends: 3206 [2020-07-21 13:54:09,169 INFO L226 Difference]: Without dead ends: 3204 [2020-07-21 13:54:09,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:54:09,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3204 states. [2020-07-21 13:54:09,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3204 to 2775. [2020-07-21 13:54:09,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2775 states. [2020-07-21 13:54:09,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2775 states to 2775 states and 3490 transitions. [2020-07-21 13:54:09,283 INFO L78 Accepts]: Start accepts. Automaton has 2775 states and 3490 transitions. Word has length 252 [2020-07-21 13:54:09,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:54:09,283 INFO L479 AbstractCegarLoop]: Abstraction has 2775 states and 3490 transitions. [2020-07-21 13:54:09,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:54:09,284 INFO L276 IsEmpty]: Start isEmpty. Operand 2775 states and 3490 transitions. [2020-07-21 13:54:09,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-07-21 13:54:09,292 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:54:09,292 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:54:09,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:54:09,506 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:54:09,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:54:09,507 INFO L82 PathProgramCache]: Analyzing trace with hash 2144724034, now seen corresponding path program 1 times [2020-07-21 13:54:09,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:54:09,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900936410] [2020-07-21 13:54:09,508 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:54:09,656 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:54:09,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:54:09,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 13:54:09,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:54:09,712 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-07-21 13:54:09,713 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:54:09,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900936410] [2020-07-21 13:54:09,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:54:09,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:54:09,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745336975] [2020-07-21 13:54:09,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:54:09,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:54:09,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:54:09,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:54:09,715 INFO L87 Difference]: Start difference. First operand 2775 states and 3490 transitions. Second operand 3 states. [2020-07-21 13:54:10,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:54:10,390 INFO L93 Difference]: Finished difference Result 5828 states and 7294 transitions. [2020-07-21 13:54:10,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:54:10,391 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 265 [2020-07-21 13:54:10,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:54:10,392 INFO L225 Difference]: With dead ends: 5828 [2020-07-21 13:54:10,392 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 13:54:10,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:54:10,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 13:54:10,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 13:54:10,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 13:54:10,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 13:54:10,408 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 265 [2020-07-21 13:54:10,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:54:10,408 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 13:54:10,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:54:10,409 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 13:54:10,409 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 13:54:10,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:54:10,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 13:54:11,363 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 45 [2020-07-21 13:54:11,507 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 13:54:11,507 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a10~0 |old(~a10~0)|) (<= ~a19~0 |old(~a19~0)|)) [2020-07-21 13:54:11,507 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 13:54:11,507 INFO L268 CegarLoopResult]: For program point L465(lines 465 572) no Hoare annotation was computed. [2020-07-21 13:54:11,508 INFO L268 CegarLoopResult]: For program point L201-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,508 INFO L268 CegarLoopResult]: For program point L168-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,508 INFO L268 CegarLoopResult]: For program point L135-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,508 INFO L268 CegarLoopResult]: For program point L102-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,508 INFO L268 CegarLoopResult]: For program point L69-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,508 INFO L268 CegarLoopResult]: For program point L36-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,508 INFO L268 CegarLoopResult]: For program point L499(lines 499 572) no Hoare annotation was computed. [2020-07-21 13:54:11,508 INFO L268 CegarLoopResult]: For program point L301(lines 301 572) no Hoare annotation was computed. [2020-07-21 13:54:11,508 INFO L268 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2020-07-21 13:54:11,508 INFO L268 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2020-07-21 13:54:11,508 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-07-21 13:54:11,509 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-07-21 13:54:11,509 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-07-21 13:54:11,509 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-07-21 13:54:11,509 INFO L268 CegarLoopResult]: For program point L335(lines 335 572) no Hoare annotation was computed. [2020-07-21 13:54:11,509 INFO L268 CegarLoopResult]: For program point L236(lines 236 572) no Hoare annotation was computed. [2020-07-21 13:54:11,509 INFO L268 CegarLoopResult]: For program point L534(lines 534 572) no Hoare annotation was computed. [2020-07-21 13:54:11,509 INFO L268 CegarLoopResult]: For program point L171-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,509 INFO L268 CegarLoopResult]: For program point L138-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,509 INFO L268 CegarLoopResult]: For program point L105-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,510 INFO L268 CegarLoopResult]: For program point L72-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,510 INFO L268 CegarLoopResult]: For program point L39-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,510 INFO L268 CegarLoopResult]: For program point L436(lines 436 572) no Hoare annotation was computed. [2020-07-21 13:54:11,510 INFO L268 CegarLoopResult]: For program point L403(lines 403 572) no Hoare annotation was computed. [2020-07-21 13:54:11,510 INFO L268 CegarLoopResult]: For program point L370(lines 370 572) no Hoare annotation was computed. [2020-07-21 13:54:11,510 INFO L268 CegarLoopResult]: For program point L271(lines 271 572) no Hoare annotation was computed. [2020-07-21 13:54:11,510 INFO L268 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2020-07-21 13:54:11,511 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-07-21 13:54:11,511 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-07-21 13:54:11,511 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-07-21 13:54:11,511 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-07-21 13:54:11,511 INFO L268 CegarLoopResult]: For program point L569(lines 569 572) no Hoare annotation was computed. [2020-07-21 13:54:11,511 INFO L268 CegarLoopResult]: For program point L239(lines 239 572) no Hoare annotation was computed. [2020-07-21 13:54:11,511 INFO L268 CegarLoopResult]: For program point L504(lines 504 572) no Hoare annotation was computed. [2020-07-21 13:54:11,511 INFO L268 CegarLoopResult]: For program point L471(lines 471 572) no Hoare annotation was computed. [2020-07-21 13:54:11,512 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 193) no Hoare annotation was computed. [2020-07-21 13:54:11,512 INFO L268 CegarLoopResult]: For program point L306(lines 306 572) no Hoare annotation was computed. [2020-07-21 13:54:11,512 INFO L268 CegarLoopResult]: For program point L174-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,512 INFO L268 CegarLoopResult]: For program point L141-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,512 INFO L268 CegarLoopResult]: For program point L108-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,512 INFO L268 CegarLoopResult]: For program point L75-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,512 INFO L268 CegarLoopResult]: For program point L42-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,512 INFO L268 CegarLoopResult]: For program point L340(lines 340 572) no Hoare annotation was computed. [2020-07-21 13:54:11,513 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-21 13:54:11,513 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-07-21 13:54:11,513 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-07-21 13:54:11,513 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-07-21 13:54:11,513 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-07-21 13:54:11,513 INFO L268 CegarLoopResult]: For program point L540(lines 540 572) no Hoare annotation was computed. [2020-07-21 13:54:11,513 INFO L268 CegarLoopResult]: For program point L408(lines 408 572) no Hoare annotation was computed. [2020-07-21 13:54:11,513 INFO L268 CegarLoopResult]: For program point L375(lines 375 572) no Hoare annotation was computed. [2020-07-21 13:54:11,513 INFO L268 CegarLoopResult]: For program point L210(lines 210 572) no Hoare annotation was computed. [2020-07-21 13:54:11,514 INFO L268 CegarLoopResult]: For program point L177-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,514 INFO L268 CegarLoopResult]: For program point L144-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,514 INFO L268 CegarLoopResult]: For program point L111-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,514 INFO L268 CegarLoopResult]: For program point L78-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,514 INFO L268 CegarLoopResult]: For program point L45-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,514 INFO L268 CegarLoopResult]: For program point L442(lines 442 572) no Hoare annotation was computed. [2020-07-21 13:54:11,514 INFO L268 CegarLoopResult]: For program point L277(lines 277 572) no Hoare annotation was computed. [2020-07-21 13:54:11,514 INFO L268 CegarLoopResult]: For program point L244(lines 244 572) no Hoare annotation was computed. [2020-07-21 13:54:11,514 INFO L268 CegarLoopResult]: For program point L178(line 178) no Hoare annotation was computed. [2020-07-21 13:54:11,515 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-07-21 13:54:11,515 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-07-21 13:54:11,515 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-07-21 13:54:11,515 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-21 13:54:11,515 INFO L268 CegarLoopResult]: For program point L509(lines 509 572) no Hoare annotation was computed. [2020-07-21 13:54:11,515 INFO L268 CegarLoopResult]: For program point L476(lines 476 572) no Hoare annotation was computed. [2020-07-21 13:54:11,515 INFO L268 CegarLoopResult]: For program point L378(lines 378 572) no Hoare annotation was computed. [2020-07-21 13:54:11,515 INFO L268 CegarLoopResult]: For program point L345(lines 345 572) no Hoare annotation was computed. [2020-07-21 13:54:11,515 INFO L268 CegarLoopResult]: For program point L312(lines 312 572) no Hoare annotation was computed. [2020-07-21 13:54:11,516 INFO L268 CegarLoopResult]: For program point L180-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,516 INFO L268 CegarLoopResult]: For program point L147-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,516 INFO L268 CegarLoopResult]: For program point L114-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,516 INFO L268 CegarLoopResult]: For program point L81-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,516 INFO L268 CegarLoopResult]: For program point L48-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,516 INFO L268 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2020-07-21 13:54:11,516 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-07-21 13:54:11,516 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-21 13:54:11,516 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-07-21 13:54:11,517 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-07-21 13:54:11,517 INFO L268 CegarLoopResult]: For program point L545(lines 545 572) no Hoare annotation was computed. [2020-07-21 13:54:11,517 INFO L268 CegarLoopResult]: For program point L215(lines 215 572) no Hoare annotation was computed. [2020-07-21 13:54:11,517 INFO L268 CegarLoopResult]: For program point L414(lines 414 572) no Hoare annotation was computed. [2020-07-21 13:54:11,517 INFO L268 CegarLoopResult]: For program point L249(lines 249 572) no Hoare annotation was computed. [2020-07-21 13:54:11,517 INFO L268 CegarLoopResult]: For program point L183-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,517 INFO L268 CegarLoopResult]: For program point L150-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,517 INFO L268 CegarLoopResult]: For program point L117-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,517 INFO L268 CegarLoopResult]: For program point L84-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,517 INFO L268 CegarLoopResult]: For program point L51-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,517 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,517 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,517 INFO L268 CegarLoopResult]: For program point L514(lines 514 572) no Hoare annotation was computed. [2020-07-21 13:54:11,518 INFO L268 CegarLoopResult]: For program point L481(lines 481 572) no Hoare annotation was computed. [2020-07-21 13:54:11,518 INFO L268 CegarLoopResult]: For program point L448(lines 448 572) no Hoare annotation was computed. [2020-07-21 13:54:11,518 INFO L268 CegarLoopResult]: For program point L283(lines 283 572) no Hoare annotation was computed. [2020-07-21 13:54:11,518 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-07-21 13:54:11,518 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-07-21 13:54:11,518 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-07-21 13:54:11,518 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-07-21 13:54:11,518 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-07-21 13:54:11,518 INFO L268 CegarLoopResult]: For program point L548(lines 548 572) no Hoare annotation was computed. [2020-07-21 13:54:11,518 INFO L268 CegarLoopResult]: For program point L383(lines 383 572) no Hoare annotation was computed. [2020-07-21 13:54:11,518 INFO L268 CegarLoopResult]: For program point L317(lines 317 572) no Hoare annotation was computed. [2020-07-21 13:54:11,519 INFO L268 CegarLoopResult]: For program point L351(lines 351 572) no Hoare annotation was computed. [2020-07-21 13:54:11,519 INFO L268 CegarLoopResult]: For program point L186-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,519 INFO L268 CegarLoopResult]: For program point L153-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,519 INFO L268 CegarLoopResult]: For program point L120-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,519 INFO L268 CegarLoopResult]: For program point L87-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,519 INFO L268 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-07-21 13:54:11,519 INFO L268 CegarLoopResult]: For program point L54-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,519 INFO L268 CegarLoopResult]: For program point L21-2(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,520 INFO L268 CegarLoopResult]: For program point L517(lines 517 572) no Hoare annotation was computed. [2020-07-21 13:54:11,520 INFO L268 CegarLoopResult]: For program point L286(lines 286 572) no Hoare annotation was computed. [2020-07-21 13:54:11,520 INFO L268 CegarLoopResult]: For program point L220(lines 220 572) no Hoare annotation was computed. [2020-07-21 13:54:11,520 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-21 13:54:11,520 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-07-21 13:54:11,520 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-07-21 13:54:11,520 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-07-21 13:54:11,520 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-07-21 13:54:11,520 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-21 13:54:11,520 INFO L268 CegarLoopResult]: For program point L419(lines 419 572) no Hoare annotation was computed. [2020-07-21 13:54:11,520 INFO L268 CegarLoopResult]: For program point L320(lines 320 572) no Hoare annotation was computed. [2020-07-21 13:54:11,520 INFO L268 CegarLoopResult]: For program point L254(lines 254 572) no Hoare annotation was computed. [2020-07-21 13:54:11,520 INFO L268 CegarLoopResult]: For program point L354(lines 354 572) no Hoare annotation was computed. [2020-07-21 13:54:11,521 INFO L268 CegarLoopResult]: For program point L189-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,521 INFO L268 CegarLoopResult]: For program point L156-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,521 INFO L268 CegarLoopResult]: For program point L123-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,521 INFO L268 CegarLoopResult]: For program point L90-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,521 INFO L268 CegarLoopResult]: For program point L57-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,521 INFO L268 CegarLoopResult]: For program point L24-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,521 INFO L268 CegarLoopResult]: For program point L487(lines 487 572) no Hoare annotation was computed. [2020-07-21 13:54:11,521 INFO L268 CegarLoopResult]: For program point L454(lines 454 572) no Hoare annotation was computed. [2020-07-21 13:54:11,521 INFO L268 CegarLoopResult]: For program point L388(lines 388 572) no Hoare annotation was computed. [2020-07-21 13:54:11,521 INFO L268 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2020-07-21 13:54:11,521 INFO L268 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2020-07-21 13:54:11,521 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-07-21 13:54:11,522 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-07-21 13:54:11,522 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-07-21 13:54:11,522 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-21 13:54:11,522 INFO L268 CegarLoopResult]: For program point L554(lines 554 572) no Hoare annotation was computed. [2020-07-21 13:54:11,522 INFO L268 CegarLoopResult]: For program point L323(lines 323 572) no Hoare annotation was computed. [2020-07-21 13:54:11,522 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 20 574) the Hoare annotation is: (let ((.cse9 (<= ~a10~0 |old(~a10~0)|)) (.cse10 (<= ~a19~0 |old(~a19~0)|))) (let ((.cse1 (and (<= 9 ~a19~0) .cse9 .cse10)) (.cse5 (not (<= |old(~a10~0)| 1))) (.cse0 (not (<= 9 |old(~a19~0)|))) (.cse6 (and .cse9 .cse10)) (.cse7 (not (<= |old(~a10~0)| 2))) (.cse8 (not (<= 4 |old(~a10~0)|))) (.cse3 (not (<= |old(~a1~0)| 23))) (.cse4 (<= ~a1~0 23)) (.cse2 (not (<= |old(~a19~0)| 9)))) (and (or .cse0 .cse1 .cse2) (or .cse3 .cse4 .cse5) (or (not (<= |old(~a19~0)| 6)) .cse6) (or .cse0 .cse1 .cse5) (or .cse3 .cse4 .cse2 .cse7) (or .cse3 .cse4 .cse0 .cse2) (or .cse6 .cse2 .cse7) (or .cse8 .cse2 (and .cse9 .cse10 (<= 4 ~a10~0))) (or .cse8 .cse3 .cse4 .cse2)))) [2020-07-21 13:54:11,522 INFO L268 CegarLoopResult]: For program point L357(lines 357 572) no Hoare annotation was computed. [2020-07-21 13:54:11,522 INFO L268 CegarLoopResult]: For program point L291(lines 291 572) no Hoare annotation was computed. [2020-07-21 13:54:11,522 INFO L268 CegarLoopResult]: For program point L225(lines 225 572) no Hoare annotation was computed. [2020-07-21 13:54:11,522 INFO L268 CegarLoopResult]: For program point L192-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,523 INFO L268 CegarLoopResult]: For program point L159-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,523 INFO L268 CegarLoopResult]: For program point L126-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,523 INFO L268 CegarLoopResult]: For program point L93-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,523 INFO L268 CegarLoopResult]: For program point L60-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,523 INFO L268 CegarLoopResult]: For program point L27-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,523 INFO L268 CegarLoopResult]: For program point L523(lines 523 572) no Hoare annotation was computed. [2020-07-21 13:54:11,523 INFO L268 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2020-07-21 13:54:11,523 INFO L268 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-07-21 13:54:11,523 INFO L268 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-07-21 13:54:11,524 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-07-21 13:54:11,524 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-07-21 13:54:11,524 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-07-21 13:54:11,524 INFO L268 CegarLoopResult]: For program point L557(lines 557 572) no Hoare annotation was computed. [2020-07-21 13:54:11,524 INFO L268 CegarLoopResult]: For program point L425(lines 425 572) no Hoare annotation was computed. [2020-07-21 13:54:11,524 INFO L268 CegarLoopResult]: For program point L326(lines 326 572) no Hoare annotation was computed. [2020-07-21 13:54:11,524 INFO L268 CegarLoopResult]: For program point L260(lines 260 572) no Hoare annotation was computed. [2020-07-21 13:54:11,524 INFO L268 CegarLoopResult]: For program point L393(lines 393 572) no Hoare annotation was computed. [2020-07-21 13:54:11,524 INFO L268 CegarLoopResult]: For program point L360(lines 360 572) no Hoare annotation was computed. [2020-07-21 13:54:11,524 INFO L268 CegarLoopResult]: For program point L195-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,524 INFO L268 CegarLoopResult]: For program point L162-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,524 INFO L268 CegarLoopResult]: For program point L129-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,525 INFO L268 CegarLoopResult]: For program point L96-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,525 INFO L268 CegarLoopResult]: For program point L63-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,525 INFO L268 CegarLoopResult]: For program point L30-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,525 INFO L268 CegarLoopResult]: For program point L526(lines 526 572) no Hoare annotation was computed. [2020-07-21 13:54:11,525 INFO L268 CegarLoopResult]: For program point L493(lines 493 572) no Hoare annotation was computed. [2020-07-21 13:54:11,525 INFO L268 CegarLoopResult]: For program point L460(lines 460 572) no Hoare annotation was computed. [2020-07-21 13:54:11,525 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-07-21 13:54:11,525 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-07-21 13:54:11,525 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-07-21 13:54:11,525 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-07-21 13:54:11,525 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-07-21 13:54:11,525 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-21 13:54:11,525 INFO L268 CegarLoopResult]: For program point L329(lines 329 572) no Hoare annotation was computed. [2020-07-21 13:54:11,526 INFO L268 CegarLoopResult]: For program point L296(lines 296 572) no Hoare annotation was computed. [2020-07-21 13:54:11,526 INFO L268 CegarLoopResult]: For program point L231(lines 231 572) no Hoare annotation was computed. [2020-07-21 13:54:11,526 INFO L268 CegarLoopResult]: For program point L198-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,526 INFO L268 CegarLoopResult]: For program point L165-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,526 INFO L268 CegarLoopResult]: For program point L132-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,526 INFO L268 CegarLoopResult]: For program point L99-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,526 INFO L268 CegarLoopResult]: For program point L66-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,526 INFO L268 CegarLoopResult]: For program point L33-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:54:11,526 INFO L268 CegarLoopResult]: For program point L529(lines 529 572) no Hoare annotation was computed. [2020-07-21 13:54:11,526 INFO L268 CegarLoopResult]: For program point L430(lines 430 572) no Hoare annotation was computed. [2020-07-21 13:54:11,526 INFO L268 CegarLoopResult]: For program point L265(lines 265 572) no Hoare annotation was computed. [2020-07-21 13:54:11,526 INFO L268 CegarLoopResult]: For program point L199(line 199) no Hoare annotation was computed. [2020-07-21 13:54:11,527 INFO L268 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2020-07-21 13:54:11,527 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-07-21 13:54:11,527 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-07-21 13:54:11,527 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-07-21 13:54:11,527 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-21 13:54:11,527 INFO L268 CegarLoopResult]: For program point L563(lines 563 572) no Hoare annotation was computed. [2020-07-21 13:54:11,527 INFO L268 CegarLoopResult]: For program point L398(lines 398 572) no Hoare annotation was computed. [2020-07-21 13:54:11,527 INFO L268 CegarLoopResult]: For program point L365(lines 365 572) no Hoare annotation was computed. [2020-07-21 13:54:11,527 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 13:54:11,527 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a10~0 0) (<= ~a19~0 9) (<= 9 ~a19~0) (<= ~a1~0 23)) [2020-07-21 13:54:11,527 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 13:54:11,527 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 13:54:11,528 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 576 592) the Hoare annotation is: (or (not (<= |old(~a1~0)| 23)) (not (<= |old(~a10~0)| 0)) (not (<= 9 |old(~a19~0)|)) (and (<= 9 ~a19~0) (<= ~a10~0 |old(~a10~0)|) (<= ~a1~0 23) (<= ~a19~0 |old(~a19~0)|)) (not (<= |old(~a19~0)| 9))) [2020-07-21 13:54:11,528 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 576 592) no Hoare annotation was computed. [2020-07-21 13:54:11,528 INFO L264 CegarLoopResult]: At program point L590(line 590) the Hoare annotation is: (let ((.cse0 (<= ~a19~0 9))) (or (<= ~a10~0 1) (not (<= |old(~a1~0)| 23)) (<= ~a19~0 6) (and .cse0 (<= 4 ~a10~0)) (not (<= |old(~a10~0)| 0)) (not (<= 9 |old(~a19~0)|)) (and .cse0 (<= ~a10~0 2)) (not (<= |old(~a19~0)| 9)) (and (<= 9 ~a19~0) .cse0))) [2020-07-21 13:54:11,528 INFO L268 CegarLoopResult]: For program point L590-1(line 590) no Hoare annotation was computed. [2020-07-21 13:54:11,528 INFO L268 CegarLoopResult]: For program point L587(line 587) no Hoare annotation was computed. [2020-07-21 13:54:11,528 INFO L264 CegarLoopResult]: At program point L582-2(lines 582 591) the Hoare annotation is: (let ((.cse0 (<= ~a19~0 9))) (or (<= ~a10~0 1) (not (<= |old(~a1~0)| 23)) (<= ~a19~0 6) (and .cse0 (<= 4 ~a10~0)) (not (<= |old(~a10~0)| 0)) (not (<= 9 |old(~a19~0)|)) (and .cse0 (<= ~a10~0 2)) (not (<= |old(~a19~0)| 9)) (and (<= 9 ~a19~0) .cse0))) [2020-07-21 13:54:11,528 INFO L268 CegarLoopResult]: For program point L582-3(lines 576 592) no Hoare annotation was computed. [2020-07-21 13:54:11,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:54:11 BoogieIcfgContainer [2020-07-21 13:54:11,546 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 13:54:11,548 INFO L168 Benchmark]: Toolchain (without parser) took 13993.14 ms. Allocated memory was 138.4 MB in the beginning and 410.0 MB in the end (delta: 271.6 MB). Free memory was 101.0 MB in the beginning and 224.8 MB in the end (delta: -123.8 MB). Peak memory consumption was 147.8 MB. Max. memory is 7.1 GB. [2020-07-21 13:54:11,549 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 138.4 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-21 13:54:11,550 INFO L168 Benchmark]: CACSL2BoogieTranslator took 738.73 ms. Allocated memory was 138.4 MB in the beginning and 205.5 MB in the end (delta: 67.1 MB). Free memory was 100.6 MB in the beginning and 172.4 MB in the end (delta: -71.8 MB). Peak memory consumption was 35.6 MB. Max. memory is 7.1 GB. [2020-07-21 13:54:11,551 INFO L168 Benchmark]: Boogie Preprocessor took 113.29 ms. Allocated memory is still 205.5 MB. Free memory was 172.4 MB in the beginning and 167.4 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2020-07-21 13:54:11,551 INFO L168 Benchmark]: RCFGBuilder took 1398.44 ms. Allocated memory was 205.5 MB in the beginning and 238.0 MB in the end (delta: 32.5 MB). Free memory was 167.4 MB in the beginning and 183.5 MB in the end (delta: -16.1 MB). Peak memory consumption was 84.0 MB. Max. memory is 7.1 GB. [2020-07-21 13:54:11,553 INFO L168 Benchmark]: TraceAbstraction took 11736.57 ms. Allocated memory was 238.0 MB in the beginning and 410.0 MB in the end (delta: 172.0 MB). Free memory was 183.5 MB in the beginning and 224.8 MB in the end (delta: -41.3 MB). Peak memory consumption was 130.7 MB. Max. memory is 7.1 GB. [2020-07-21 13:54:11,557 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 138.4 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 738.73 ms. Allocated memory was 138.4 MB in the beginning and 205.5 MB in the end (delta: 67.1 MB). Free memory was 100.6 MB in the beginning and 172.4 MB in the end (delta: -71.8 MB). Peak memory consumption was 35.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.29 ms. Allocated memory is still 205.5 MB. Free memory was 172.4 MB in the beginning and 167.4 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1398.44 ms. Allocated memory was 205.5 MB in the beginning and 238.0 MB in the end (delta: 32.5 MB). Free memory was 167.4 MB in the beginning and 183.5 MB in the end (delta: -16.1 MB). Peak memory consumption was 84.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11736.57 ms. Allocated memory was 238.0 MB in the beginning and 410.0 MB in the end (delta: 172.0 MB). Free memory was 183.5 MB in the beginning and 224.8 MB in the end (delta: -41.3 MB). Peak memory consumption was 130.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 193]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 582]: Loop Invariant Derived loop invariant: (((((((a10 <= 1 || !(\old(a1) <= 23)) || a19 <= 6) || (a19 <= 9 && 4 <= a10)) || !(\old(a10) <= 0)) || !(9 <= \old(a19))) || (a19 <= 9 && a10 <= 2)) || !(\old(a19) <= 9)) || (9 <= a19 && a19 <= 9) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.7s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 6.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 681 SDtfs, 1260 SDslu, 134 SDs, 0 SdLazy, 3432 SolverSat, 681 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1440 GetRequests, 1422 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2775occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 8 MinimizatonAttempts, 469 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 81 PreInvPairs, 123 NumberOfFragments, 285 HoareAnnotationTreeSize, 81 FomulaSimplifications, 1537 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 7 FomulaSimplificationsInter, 720 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 1442 NumberOfCodeBlocks, 1442 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1434 ConstructedInterpolants, 0 QuantifiedInterpolants, 488506 SizeOfPredicates, 15 NumberOfNonLiveVariables, 2598 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 844/844 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...