/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 22:06:30,243 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 22:06:30,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 22:06:30,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 22:06:30,258 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 22:06:30,259 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 22:06:30,261 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 22:06:30,263 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 22:06:30,264 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 22:06:30,265 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 22:06:30,266 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 22:06:30,267 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 22:06:30,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 22:06:30,269 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 22:06:30,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 22:06:30,271 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 22:06:30,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 22:06:30,273 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 22:06:30,275 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 22:06:30,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 22:06:30,278 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 22:06:30,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 22:06:30,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 22:06:30,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 22:06:30,284 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 22:06:30,301 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 22:06:30,325 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 22:06:30,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 22:06:30,328 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 22:06:30,328 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 22:06:30,328 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 22:06:30,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 22:06:30,329 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 22:06:30,329 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 22:06:30,329 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 22:06:30,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 22:06:30,330 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 22:06:30,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 22:06:30,331 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 22:06:30,331 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 22:06:30,331 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 22:06:30,331 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 22:06:30,332 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 22:06:30,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 22:06:30,332 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 22:06:30,332 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 22:06:30,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 22:06:30,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 22:06:30,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 22:06:30,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 22:06:30,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 22:06:30,334 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 22:06:30,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:06:30,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 22:06:30,334 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 22:06:30,334 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 22:06:30,607 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 22:06:30,627 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 22:06:30,630 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 22:06:30,632 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 22:06:30,632 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 22:06:30,633 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label11.c [2020-07-20 22:06:30,700 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01c157dc2/6c4a050be58a4cdc984c5242dcbb23d9/FLAG80d577d57 [2020-07-20 22:06:31,306 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 22:06:31,307 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label11.c [2020-07-20 22:06:31,322 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01c157dc2/6c4a050be58a4cdc984c5242dcbb23d9/FLAG80d577d57 [2020-07-20 22:06:31,601 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01c157dc2/6c4a050be58a4cdc984c5242dcbb23d9 [2020-07-20 22:06:31,612 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 22:06:31,614 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 22:06:31,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 22:06:31,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 22:06:31,620 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 22:06:31,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:06:31" (1/1) ... [2020-07-20 22:06:31,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33761369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:06:31, skipping insertion in model container [2020-07-20 22:06:31,625 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:06:31" (1/1) ... [2020-07-20 22:06:31,635 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 22:06:31,690 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 22:06:32,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 22:06:32,256 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 22:06:32,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 22:06:32,365 INFO L208 MainTranslator]: Completed translation [2020-07-20 22:06:32,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:06:32 WrapperNode [2020-07-20 22:06:32,366 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 22:06:32,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 22:06:32,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 22:06:32,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 22:06:32,384 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:06:32" (1/1) ... [2020-07-20 22:06:32,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:06:32" (1/1) ... [2020-07-20 22:06:32,404 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:06:32" (1/1) ... [2020-07-20 22:06:32,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:06:32" (1/1) ... [2020-07-20 22:06:32,444 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:06:32" (1/1) ... [2020-07-20 22:06:32,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:06:32" (1/1) ... [2020-07-20 22:06:32,469 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:06:32" (1/1) ... [2020-07-20 22:06:32,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 22:06:32,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 22:06:32,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 22:06:32,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 22:06:32,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:06:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 22:06:32,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 22:06:32,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 22:06:32,548 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-20 22:06:32,548 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 22:06:32,548 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-20 22:06:32,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 22:06:32,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 22:06:32,549 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 22:06:32,549 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 22:06:32,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 22:06:32,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 22:06:33,881 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 22:06:33,882 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 22:06:33,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:06:33 BoogieIcfgContainer [2020-07-20 22:06:33,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 22:06:33,891 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 22:06:33,891 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 22:06:33,894 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 22:06:33,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:06:31" (1/3) ... [2020-07-20 22:06:33,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d5098ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:06:33, skipping insertion in model container [2020-07-20 22:06:33,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:06:32" (2/3) ... [2020-07-20 22:06:33,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d5098ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:06:33, skipping insertion in model container [2020-07-20 22:06:33,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:06:33" (3/3) ... [2020-07-20 22:06:33,898 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label11.c [2020-07-20 22:06:33,911 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 22:06:33,920 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 22:06:33,938 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 22:06:33,969 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 22:06:33,969 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 22:06:33,969 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 22:06:33,969 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 22:06:33,970 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 22:06:33,970 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 22:06:33,970 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 22:06:33,970 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 22:06:33,996 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-07-20 22:06:34,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-07-20 22:06:34,008 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:06:34,010 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] [2020-07-20 22:06:34,010 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:06:34,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:06:34,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1918215546, now seen corresponding path program 1 times [2020-07-20 22:06:34,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:06:34,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966472333] [2020-07-20 22:06:34,032 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:06:34,179 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:06:34,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:06:34,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 22:06:34,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:06:34,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:06:34,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:06:34,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966472333] [2020-07-20 22:06:34,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:06:34,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:06:34,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176671604] [2020-07-20 22:06:34,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:06:34,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:06:34,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:06:34,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:06:34,302 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2020-07-20 22:06:35,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:06:35,472 INFO L93 Difference]: Finished difference Result 586 states and 1004 transitions. [2020-07-20 22:06:35,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:06:35,474 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-07-20 22:06:35,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:06:35,503 INFO L225 Difference]: With dead ends: 586 [2020-07-20 22:06:35,504 INFO L226 Difference]: Without dead ends: 294 [2020-07-20 22:06:35,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:06:35,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-07-20 22:06:35,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2020-07-20 22:06:35,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-07-20 22:06:35,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 446 transitions. [2020-07-20 22:06:35,629 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 446 transitions. Word has length 67 [2020-07-20 22:06:35,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:06:35,630 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 446 transitions. [2020-07-20 22:06:35,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:06:35,630 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 446 transitions. [2020-07-20 22:06:35,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-07-20 22:06:35,638 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:06:35,638 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:06:35,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:06:35,854 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:06:35,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:06:35,855 INFO L82 PathProgramCache]: Analyzing trace with hash -649832990, now seen corresponding path program 1 times [2020-07-20 22:06:35,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:06:35,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633466288] [2020-07-20 22:06:35,857 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:06:35,987 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:06:35,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:06:35,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 22:06:36,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:06:36,065 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:06:36,065 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:06:36,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633466288] [2020-07-20 22:06:36,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:06:36,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:06:36,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347209924] [2020-07-20 22:06:36,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:06:36,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:06:36,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:06:36,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:06:36,072 INFO L87 Difference]: Start difference. First operand 294 states and 446 transitions. Second operand 3 states. [2020-07-20 22:06:36,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:06:36,846 INFO L93 Difference]: Finished difference Result 868 states and 1337 transitions. [2020-07-20 22:06:36,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:06:36,846 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 137 [2020-07-20 22:06:36,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:06:36,852 INFO L225 Difference]: With dead ends: 868 [2020-07-20 22:06:36,852 INFO L226 Difference]: Without dead ends: 580 [2020-07-20 22:06:36,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:06:36,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-07-20 22:06:36,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 437. [2020-07-20 22:06:36,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-07-20 22:06:36,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 648 transitions. [2020-07-20 22:06:36,895 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 648 transitions. Word has length 137 [2020-07-20 22:06:36,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:06:36,898 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 648 transitions. [2020-07-20 22:06:36,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:06:36,899 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 648 transitions. [2020-07-20 22:06:36,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-07-20 22:06:36,909 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:06:36,910 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:06:37,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:06:37,112 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:06:37,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:06:37,113 INFO L82 PathProgramCache]: Analyzing trace with hash 387828613, now seen corresponding path program 1 times [2020-07-20 22:06:37,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:06:37,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085819176] [2020-07-20 22:06:37,114 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:06:37,201 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:06:37,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:06:37,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 22:06:37,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:06:37,274 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:06:37,275 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:06:37,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085819176] [2020-07-20 22:06:37,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:06:37,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:06:37,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190022838] [2020-07-20 22:06:37,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:06:37,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:06:37,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:06:37,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:06:37,289 INFO L87 Difference]: Start difference. First operand 437 states and 648 transitions. Second operand 3 states. [2020-07-20 22:06:38,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:06:38,002 INFO L93 Difference]: Finished difference Result 868 states and 1308 transitions. [2020-07-20 22:06:38,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:06:38,003 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 144 [2020-07-20 22:06:38,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:06:38,016 INFO L225 Difference]: With dead ends: 868 [2020-07-20 22:06:38,016 INFO L226 Difference]: Without dead ends: 866 [2020-07-20 22:06:38,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:06:38,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2020-07-20 22:06:38,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 437. [2020-07-20 22:06:38,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-07-20 22:06:38,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 648 transitions. [2020-07-20 22:06:38,047 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 648 transitions. Word has length 144 [2020-07-20 22:06:38,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:06:38,049 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 648 transitions. [2020-07-20 22:06:38,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:06:38,049 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 648 transitions. [2020-07-20 22:06:38,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-07-20 22:06:38,054 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:06:38,054 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:06:38,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:06:38,255 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:06:38,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:06:38,256 INFO L82 PathProgramCache]: Analyzing trace with hash -319573275, now seen corresponding path program 1 times [2020-07-20 22:06:38,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:06:38,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248919824] [2020-07-20 22:06:38,257 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:06:38,367 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:06:38,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:06:38,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 22:06:38,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:06:38,459 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:06:38,459 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:06:38,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1248919824] [2020-07-20 22:06:38,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:06:38,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:06:38,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221220557] [2020-07-20 22:06:38,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:06:38,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:06:38,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:06:38,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:06:38,462 INFO L87 Difference]: Start difference. First operand 437 states and 648 transitions. Second operand 3 states. [2020-07-20 22:06:39,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:06:39,195 INFO L93 Difference]: Finished difference Result 1154 states and 1745 transitions. [2020-07-20 22:06:39,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:06:39,196 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 192 [2020-07-20 22:06:39,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:06:39,201 INFO L225 Difference]: With dead ends: 1154 [2020-07-20 22:06:39,202 INFO L226 Difference]: Without dead ends: 723 [2020-07-20 22:06:39,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:06:39,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-07-20 22:06:39,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 580. [2020-07-20 22:06:39,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-07-20 22:06:39,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 811 transitions. [2020-07-20 22:06:39,227 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 811 transitions. Word has length 192 [2020-07-20 22:06:39,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:06:39,228 INFO L479 AbstractCegarLoop]: Abstraction has 580 states and 811 transitions. [2020-07-20 22:06:39,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:06:39,228 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 811 transitions. [2020-07-20 22:06:39,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-07-20 22:06:39,232 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:06:39,232 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:06:39,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:06:39,446 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:06:39,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:06:39,447 INFO L82 PathProgramCache]: Analyzing trace with hash 562765338, now seen corresponding path program 1 times [2020-07-20 22:06:39,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:06:39,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180736568] [2020-07-20 22:06:39,448 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:06:39,647 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:06:39,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:06:39,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 22:06:39,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:06:39,734 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-07-20 22:06:39,735 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:06:39,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180736568] [2020-07-20 22:06:39,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:06:39,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 22:06:39,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485463827] [2020-07-20 22:06:39,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 22:06:39,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:06:39,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 22:06:39,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 22:06:39,738 INFO L87 Difference]: Start difference. First operand 580 states and 811 transitions. Second operand 5 states. [2020-07-20 22:06:40,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:06:40,779 INFO L93 Difference]: Finished difference Result 1315 states and 1852 transitions. [2020-07-20 22:06:40,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 22:06:40,784 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 263 [2020-07-20 22:06:40,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:06:40,789 INFO L225 Difference]: With dead ends: 1315 [2020-07-20 22:06:40,790 INFO L226 Difference]: Without dead ends: 741 [2020-07-20 22:06:40,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-20 22:06:40,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-07-20 22:06:40,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 739. [2020-07-20 22:06:40,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2020-07-20 22:06:40,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 1009 transitions. [2020-07-20 22:06:40,817 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 1009 transitions. Word has length 263 [2020-07-20 22:06:40,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:06:40,818 INFO L479 AbstractCegarLoop]: Abstraction has 739 states and 1009 transitions. [2020-07-20 22:06:40,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 22:06:40,818 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 1009 transitions. [2020-07-20 22:06:40,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-07-20 22:06:40,823 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:06:40,824 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-20 22:06:41,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:06:41,031 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:06:41,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:06:41,032 INFO L82 PathProgramCache]: Analyzing trace with hash -550746410, now seen corresponding path program 1 times [2020-07-20 22:06:41,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:06:41,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309249853] [2020-07-20 22:06:41,034 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:06:41,167 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:06:41,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:06:41,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 22:06:41,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:06:41,255 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-07-20 22:06:41,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:06:41,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1309249853] [2020-07-20 22:06:41,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:06:41,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 22:06:41,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898854486] [2020-07-20 22:06:41,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 22:06:41,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:06:41,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 22:06:41,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 22:06:41,258 INFO L87 Difference]: Start difference. First operand 739 states and 1009 transitions. Second operand 5 states. [2020-07-20 22:06:42,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:06:42,268 INFO L93 Difference]: Finished difference Result 1649 states and 2326 transitions. [2020-07-20 22:06:42,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 22:06:42,269 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 281 [2020-07-20 22:06:42,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:06:42,276 INFO L225 Difference]: With dead ends: 1649 [2020-07-20 22:06:42,276 INFO L226 Difference]: Without dead ends: 916 [2020-07-20 22:06:42,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-20 22:06:42,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2020-07-20 22:06:42,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 890. [2020-07-20 22:06:42,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 890 states. [2020-07-20 22:06:42,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1140 transitions. [2020-07-20 22:06:42,317 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1140 transitions. Word has length 281 [2020-07-20 22:06:42,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:06:42,317 INFO L479 AbstractCegarLoop]: Abstraction has 890 states and 1140 transitions. [2020-07-20 22:06:42,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 22:06:42,318 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1140 transitions. [2020-07-20 22:06:42,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-07-20 22:06:42,323 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:06:42,324 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-20 22:06:42,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:06:42,539 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:06:42,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:06:42,539 INFO L82 PathProgramCache]: Analyzing trace with hash -182681854, now seen corresponding path program 1 times [2020-07-20 22:06:42,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:06:42,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941440327] [2020-07-20 22:06:42,540 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:06:42,699 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:06:42,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:06:42,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 22:06:42,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:06:42,810 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-07-20 22:06:42,810 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:06:42,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941440327] [2020-07-20 22:06:42,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:06:42,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 22:06:42,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477551405] [2020-07-20 22:06:42,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 22:06:42,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:06:42,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 22:06:42,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 22:06:42,812 INFO L87 Difference]: Start difference. First operand 890 states and 1140 transitions. Second operand 5 states. [2020-07-20 22:06:43,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:06:43,861 INFO L93 Difference]: Finished difference Result 1951 states and 2583 transitions. [2020-07-20 22:06:43,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 22:06:43,863 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 307 [2020-07-20 22:06:43,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:06:43,876 INFO L225 Difference]: With dead ends: 1951 [2020-07-20 22:06:43,877 INFO L226 Difference]: Without dead ends: 1210 [2020-07-20 22:06:43,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-20 22:06:43,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2020-07-20 22:06:43,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1194. [2020-07-20 22:06:43,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2020-07-20 22:06:43,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 1488 transitions. [2020-07-20 22:06:43,940 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 1488 transitions. Word has length 307 [2020-07-20 22:06:43,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:06:43,940 INFO L479 AbstractCegarLoop]: Abstraction has 1194 states and 1488 transitions. [2020-07-20 22:06:43,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 22:06:43,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 1488 transitions. [2020-07-20 22:06:43,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-07-20 22:06:43,945 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:06:43,945 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:06:44,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:06:44,159 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:06:44,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:06:44,159 INFO L82 PathProgramCache]: Analyzing trace with hash 745892726, now seen corresponding path program 1 times [2020-07-20 22:06:44,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:06:44,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492066084] [2020-07-20 22:06:44,160 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:06:44,388 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:06:44,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:06:44,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 22:06:44,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:06:44,433 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-20 22:06:44,434 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:06:44,512 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 334 proven. 2 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-07-20 22:06:44,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 22:06:44,614 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:06:44,616 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:06:44,623 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 1] term [2020-07-20 22:06:44,623 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:06:44,991 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 252 proven. 77 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-07-20 22:06:44,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492066084] [2020-07-20 22:06:44,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 22:06:44,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-20 22:06:44,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359197366] [2020-07-20 22:06:44,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 22:06:44,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:06:44,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 22:06:44,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 22:06:44,995 INFO L87 Difference]: Start difference. First operand 1194 states and 1488 transitions. Second operand 6 states. [2020-07-20 22:06:46,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:06:46,131 INFO L93 Difference]: Finished difference Result 2418 states and 3118 transitions. [2020-07-20 22:06:46,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 22:06:46,132 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 333 [2020-07-20 22:06:46,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:06:46,145 INFO L225 Difference]: With dead ends: 2418 [2020-07-20 22:06:46,148 INFO L226 Difference]: Without dead ends: 1373 [2020-07-20 22:06:46,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 671 GetRequests, 662 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-20 22:06:46,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2020-07-20 22:06:46,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 1351. [2020-07-20 22:06:46,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1351 states. [2020-07-20 22:06:46,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1351 states to 1351 states and 1608 transitions. [2020-07-20 22:06:46,221 INFO L78 Accepts]: Start accepts. Automaton has 1351 states and 1608 transitions. Word has length 333 [2020-07-20 22:06:46,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:06:46,222 INFO L479 AbstractCegarLoop]: Abstraction has 1351 states and 1608 transitions. [2020-07-20 22:06:46,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 22:06:46,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1351 states and 1608 transitions. [2020-07-20 22:06:46,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-07-20 22:06:46,227 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:06:46,227 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:06:46,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:06:46,434 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:06:46,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:06:46,435 INFO L82 PathProgramCache]: Analyzing trace with hash 2013092669, now seen corresponding path program 1 times [2020-07-20 22:06:46,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:06:46,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137753251] [2020-07-20 22:06:46,436 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:06:46,668 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:06:46,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:06:46,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 22:06:46,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:06:46,789 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 350 proven. 2 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-07-20 22:06:46,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 22:06:46,956 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 259 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-07-20 22:06:46,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137753251] [2020-07-20 22:06:46,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 22:06:46,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-20 22:06:46,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803550436] [2020-07-20 22:06:46,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 22:06:46,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:06:46,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 22:06:46,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 22:06:46,960 INFO L87 Difference]: Start difference. First operand 1351 states and 1608 transitions. Second operand 7 states. [2020-07-20 22:06:48,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:06:48,777 INFO L93 Difference]: Finished difference Result 3860 states and 4614 transitions. [2020-07-20 22:06:48,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 22:06:48,779 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 342 [2020-07-20 22:06:48,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:06:48,790 INFO L225 Difference]: With dead ends: 3860 [2020-07-20 22:06:48,791 INFO L226 Difference]: Without dead ends: 2060 [2020-07-20 22:06:48,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 679 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-07-20 22:06:48,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2060 states. [2020-07-20 22:06:48,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2060 to 1341. [2020-07-20 22:06:48,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1341 states. [2020-07-20 22:06:48,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 1523 transitions. [2020-07-20 22:06:48,839 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 1523 transitions. Word has length 342 [2020-07-20 22:06:48,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:06:48,839 INFO L479 AbstractCegarLoop]: Abstraction has 1341 states and 1523 transitions. [2020-07-20 22:06:48,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 22:06:48,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 1523 transitions. [2020-07-20 22:06:48,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2020-07-20 22:06:48,845 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:06:48,845 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-20 22:06:49,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:06:49,050 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:06:49,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:06:49,051 INFO L82 PathProgramCache]: Analyzing trace with hash 348873925, now seen corresponding path program 1 times [2020-07-20 22:06:49,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:06:49,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186623965] [2020-07-20 22:06:49,053 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:06:49,225 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:06:49,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:06:49,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-20 22:06:49,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:06:49,258 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:06:49,260 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 22:06:49,262 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 22:06:49,263 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 22:06:49,267 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-20 22:06:49,274 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 22:06:49,278 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 22:06:49,286 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-20 22:06:49,290 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 22:06:49,292 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 22:06:49,299 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:06:49,302 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 22:06:49,304 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 22:06:49,312 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 22:06:49,313 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 22:06:49,318 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 22:06:49,322 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:06:49,323 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 22:06:49,326 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 22:06:49,328 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 22:06:49,329 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 22:06:49,331 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 22:06:49,334 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 22:06:49,343 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-20 22:06:49,346 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 22:06:49,349 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-20 22:07:04,711 WARN L193 SmtUtils]: Spent 15.28 s on a formula simplification. DAG size of input: 64 DAG size of output: 33 [2020-07-20 22:07:04,758 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-20 22:07:04,885 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-20 22:07:04,886 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:07:04,888 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:07:04,915 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:07:05,172 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 386 proven. 2 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-07-20 22:07:05,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 22:07:05,281 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 22:07:05,282 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:07:05,283 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:07:05,285 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 22:07:05,309 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:07:05,311 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 22:07:05,442 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:07:05,444 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:07:05,444 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 22:07:05,448 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-20 22:07:05,449 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-20 22:07:05,451 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-20 22:07:05,452 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-20 22:07:05,455 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-20 22:07:05,460 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 22:07:05,461 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-20 22:07:05,464 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 22:07:05,465 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-20 22:07:05,466 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-20 22:07:05,467 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-20 22:07:05,468 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-20 22:07:05,470 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-20 22:07:05,472 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-20 22:07:05,474 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-20 22:07:05,475 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-20 22:07:05,477 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-20 22:07:05,478 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-20 22:07:05,480 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-20 22:07:05,487 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-20 22:07:05,488 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-20 22:07:05,489 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-20 22:07:05,492 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 22:07:05,494 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-20 22:07:05,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [186623965] [2020-07-20 22:07:05,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-20 22:07:05,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-07-20 22:07:05,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308615831] [2020-07-20 22:07:05,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 22:07:05,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:07:05,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 22:07:05,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-07-20 22:07:05,684 INFO L87 Difference]: Start difference. First operand 1341 states and 1523 transitions. Second operand 8 states. [2020-07-20 22:07:08,700 WARN L193 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 48 DAG size of output: 33 [2020-07-20 22:10:42,284 WARN L193 SmtUtils]: Spent 31.81 s on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-07-20 22:11:05,619 WARN L193 SmtUtils]: Spent 2.36 s on a formula simplification. DAG size of input: 41 DAG size of output: 27 [2020-07-20 22:11:18,212 WARN L193 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 39 DAG size of output: 25 [2020-07-20 22:12:01,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:12:01,274 INFO L93 Difference]: Finished difference Result 4011 states and 4784 transitions. [2020-07-20 22:12:01,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-20 22:12:01,285 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 378 [2020-07-20 22:12:01,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:12:01,299 INFO L225 Difference]: With dead ends: 4011 [2020-07-20 22:12:01,299 INFO L226 Difference]: Without dead ends: 2819 [2020-07-20 22:12:01,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 625 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 54.8s TimeCoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2020-07-20 22:12:01,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2819 states. [2020-07-20 22:12:01,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2819 to 2662. [2020-07-20 22:12:01,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2662 states. [2020-07-20 22:12:01,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2662 states to 2662 states and 3093 transitions. [2020-07-20 22:12:01,394 INFO L78 Accepts]: Start accepts. Automaton has 2662 states and 3093 transitions. Word has length 378 [2020-07-20 22:12:01,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:12:01,396 INFO L479 AbstractCegarLoop]: Abstraction has 2662 states and 3093 transitions. [2020-07-20 22:12:01,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 22:12:01,396 INFO L276 IsEmpty]: Start isEmpty. Operand 2662 states and 3093 transitions. [2020-07-20 22:12:01,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2020-07-20 22:12:01,406 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:12:01,408 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-20 22:12:01,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:12:01,610 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:12:01,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:12:01,610 INFO L82 PathProgramCache]: Analyzing trace with hash -301430794, now seen corresponding path program 1 times [2020-07-20 22:12:01,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:12:01,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845286967] [2020-07-20 22:12:01,612 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:12:01,835 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:12:01,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:12:01,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-20 22:12:01,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:12:01,955 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:12:01,955 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 22:12:01,956 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-20 22:12:01,957 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 22:12:01,958 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 22:12:01,958 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 22:12:01,959 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 22:12:01,960 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-20 22:12:33,342 WARN L193 SmtUtils]: Spent 25.21 s on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2020-07-20 22:12:39,535 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-07-20 22:12:42,008 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 29 [2020-07-20 22:12:42,201 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:12:42,388 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 369 proven. 13 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-07-20 22:12:42,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 22:12:42,696 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 19 [2020-07-20 22:12:42,767 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-20 22:12:42,767 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:12:43,171 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 3, 2, 3, 2, 1] term [2020-07-20 22:12:43,172 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:12:43,172 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 3, 2, 1] term [2020-07-20 22:12:43,172 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:12:43,174 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 3, 2, 1] term [2020-07-20 22:12:43,174 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:12:43,175 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:12:43,175 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-20 22:12:43,176 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-20 22:12:43,176 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-20 22:12:43,177 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-20 22:12:43,177 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-20 22:12:43,178 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 22:12:43,179 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-20 22:12:43,179 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-20 22:12:43,180 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-20 22:12:43,181 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-20 22:12:43,182 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-20 22:12:43,182 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-20 22:12:43,183 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-20 22:12:43,184 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-20 22:12:43,184 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-20 22:12:43,185 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-20 22:12:43,577 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 377 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-07-20 22:12:43,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1845286967] [2020-07-20 22:12:43,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 22:12:43,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 12 [2020-07-20 22:12:43,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558255448] [2020-07-20 22:12:43,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-20 22:12:43,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:12:43,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-20 22:12:43,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=98, Unknown=4, NotChecked=0, Total=132 [2020-07-20 22:12:43,579 INFO L87 Difference]: Start difference. First operand 2662 states and 3093 transitions. Second operand 12 states. [2020-07-20 22:13:51,533 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 13 [2020-07-20 22:14:57,620 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-07-20 22:15:28,690 WARN L193 SmtUtils]: Spent 25.42 s on a formula simplification. DAG size of input: 62 DAG size of output: 37 [2020-07-20 22:16:03,760 WARN L193 SmtUtils]: Spent 26.44 s on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2020-07-20 22:16:22,373 WARN L193 SmtUtils]: Spent 8.22 s on a formula simplification that was a NOOP. DAG size: 53 [2020-07-20 22:16:29,511 WARN L193 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-07-20 22:17:52,467 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2020-07-20 22:19:34,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:19:34,485 INFO L93 Difference]: Finished difference Result 5999 states and 7173 transitions. [2020-07-20 22:19:34,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-07-20 22:19:34,507 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 397 [2020-07-20 22:19:34,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:19:34,523 INFO L225 Difference]: With dead ends: 5999 [2020-07-20 22:19:34,523 INFO L226 Difference]: Without dead ends: 3486 [2020-07-20 22:19:34,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 825 GetRequests, 794 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 127.5s TimeCoverageRelationStatistics Valid=170, Invalid=690, Unknown=10, NotChecked=0, Total=870 [2020-07-20 22:19:34,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3486 states. [2020-07-20 22:19:34,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3486 to 3304. [2020-07-20 22:19:34,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3304 states. [2020-07-20 22:19:34,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3304 states to 3304 states and 3910 transitions. [2020-07-20 22:19:34,620 INFO L78 Accepts]: Start accepts. Automaton has 3304 states and 3910 transitions. Word has length 397 [2020-07-20 22:19:34,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:19:34,621 INFO L479 AbstractCegarLoop]: Abstraction has 3304 states and 3910 transitions. [2020-07-20 22:19:34,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-20 22:19:34,621 INFO L276 IsEmpty]: Start isEmpty. Operand 3304 states and 3910 transitions. [2020-07-20 22:19:34,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2020-07-20 22:19:34,631 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:19:34,632 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-07-20 22:19:34,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:19:34,842 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:19:34,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:19:34,843 INFO L82 PathProgramCache]: Analyzing trace with hash 252720706, now seen corresponding path program 1 times [2020-07-20 22:19:34,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:19:34,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370162766] [2020-07-20 22:19:34,844 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:19:35,063 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:19:35,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:19:35,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 22:19:35,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:19:35,080 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 22:19:35,081 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 22:19:35,082 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:19:35,082 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:19:35,082 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 22:19:35,083 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:19:35,084 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 22:19:35,396 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 23 [2020-07-20 22:19:35,683 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2020-07-20 22:19:35,684 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:19:35,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370162766] [2020-07-20 22:19:35,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:19:35,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:19:35,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419343284] [2020-07-20 22:19:35,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:19:35,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:19:35,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:19:35,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:19:35,693 INFO L87 Difference]: Start difference. First operand 3304 states and 3910 transitions. Second operand 3 states. [2020-07-20 22:19:45,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:19:45,822 INFO L93 Difference]: Finished difference Result 4174 states and 4983 transitions. [2020-07-20 22:19:45,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:19:45,839 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 407 [2020-07-20 22:19:45,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:19:45,840 INFO L225 Difference]: With dead ends: 4174 [2020-07-20 22:19:45,840 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 22:19:45,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:19:45,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 22:19:45,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 22:19:45,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 22:19:45,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 22:19:45,851 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 407 [2020-07-20 22:19:45,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:19:45,851 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 22:19:45,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:19:45,851 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 22:19:45,851 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 22:19:46,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:19:46,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 22:19:47,075 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 196 [2020-07-20 22:19:47,242 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 196 [2020-07-20 22:19:47,516 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 11 [2020-07-20 22:19:48,146 WARN L193 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 24 [2020-07-20 22:19:54,525 WARN L193 SmtUtils]: Spent 6.36 s on a formula simplification. DAG size of input: 253 DAG size of output: 58 [2020-07-20 22:19:54,709 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 11 [2020-07-20 22:19:59,695 WARN L193 SmtUtils]: Spent 4.98 s on a formula simplification. DAG size of input: 211 DAG size of output: 50 [2020-07-20 22:20:04,612 WARN L193 SmtUtils]: Spent 4.91 s on a formula simplification. DAG size of input: 211 DAG size of output: 50 [2020-07-20 22:20:04,621 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 22:20:04,622 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a10~0 |old(~a10~0)|) (<= |old(~a10~0)| ~a10~0) (<= ~a19~0 |old(~a19~0)|) (= ~a1~0 |old(~a1~0)|)) [2020-07-20 22:20:04,622 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 22:20:04,622 INFO L268 CegarLoopResult]: For program point L465(lines 465 572) no Hoare annotation was computed. [2020-07-20 22:20:04,622 INFO L268 CegarLoopResult]: For program point L201-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,622 INFO L268 CegarLoopResult]: For program point L168-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,622 INFO L268 CegarLoopResult]: For program point L135-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,622 INFO L268 CegarLoopResult]: For program point L102-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,622 INFO L268 CegarLoopResult]: For program point L69-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,622 INFO L268 CegarLoopResult]: For program point L36-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,623 INFO L268 CegarLoopResult]: For program point L499(lines 499 572) no Hoare annotation was computed. [2020-07-20 22:20:04,623 INFO L268 CegarLoopResult]: For program point L301(lines 301 572) no Hoare annotation was computed. [2020-07-20 22:20:04,623 INFO L268 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2020-07-20 22:20:04,623 INFO L268 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2020-07-20 22:20:04,623 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-07-20 22:20:04,623 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-07-20 22:20:04,623 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-07-20 22:20:04,623 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-07-20 22:20:04,623 INFO L268 CegarLoopResult]: For program point L335(lines 335 572) no Hoare annotation was computed. [2020-07-20 22:20:04,623 INFO L268 CegarLoopResult]: For program point L236(lines 236 572) no Hoare annotation was computed. [2020-07-20 22:20:04,623 INFO L268 CegarLoopResult]: For program point L534(lines 534 572) no Hoare annotation was computed. [2020-07-20 22:20:04,623 INFO L268 CegarLoopResult]: For program point L171-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,624 INFO L268 CegarLoopResult]: For program point L138-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,624 INFO L268 CegarLoopResult]: For program point L105-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,624 INFO L268 CegarLoopResult]: For program point L72-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,624 INFO L268 CegarLoopResult]: For program point L39-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,624 INFO L268 CegarLoopResult]: For program point L436(lines 436 572) no Hoare annotation was computed. [2020-07-20 22:20:04,624 INFO L268 CegarLoopResult]: For program point L403(lines 403 572) no Hoare annotation was computed. [2020-07-20 22:20:04,624 INFO L268 CegarLoopResult]: For program point L370(lines 370 572) no Hoare annotation was computed. [2020-07-20 22:20:04,625 INFO L268 CegarLoopResult]: For program point L271(lines 271 572) no Hoare annotation was computed. [2020-07-20 22:20:04,625 INFO L268 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2020-07-20 22:20:04,625 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-07-20 22:20:04,625 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-07-20 22:20:04,625 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-07-20 22:20:04,625 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-07-20 22:20:04,625 INFO L268 CegarLoopResult]: For program point L569(lines 569 572) no Hoare annotation was computed. [2020-07-20 22:20:04,625 INFO L268 CegarLoopResult]: For program point L239(lines 239 572) no Hoare annotation was computed. [2020-07-20 22:20:04,625 INFO L268 CegarLoopResult]: For program point L504(lines 504 572) no Hoare annotation was computed. [2020-07-20 22:20:04,625 INFO L268 CegarLoopResult]: For program point L471(lines 471 572) no Hoare annotation was computed. [2020-07-20 22:20:04,625 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 187) no Hoare annotation was computed. [2020-07-20 22:20:04,625 INFO L268 CegarLoopResult]: For program point L306(lines 306 572) no Hoare annotation was computed. [2020-07-20 22:20:04,626 INFO L268 CegarLoopResult]: For program point L174-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,626 INFO L268 CegarLoopResult]: For program point L141-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,626 INFO L268 CegarLoopResult]: For program point L108-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,626 INFO L268 CegarLoopResult]: For program point L75-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,626 INFO L268 CegarLoopResult]: For program point L42-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,626 INFO L268 CegarLoopResult]: For program point L340(lines 340 572) no Hoare annotation was computed. [2020-07-20 22:20:04,626 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-20 22:20:04,626 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-07-20 22:20:04,626 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-07-20 22:20:04,626 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-07-20 22:20:04,627 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-07-20 22:20:04,627 INFO L268 CegarLoopResult]: For program point L540(lines 540 572) no Hoare annotation was computed. [2020-07-20 22:20:04,627 INFO L268 CegarLoopResult]: For program point L408(lines 408 572) no Hoare annotation was computed. [2020-07-20 22:20:04,627 INFO L268 CegarLoopResult]: For program point L375(lines 375 572) no Hoare annotation was computed. [2020-07-20 22:20:04,627 INFO L268 CegarLoopResult]: For program point L210(lines 210 572) no Hoare annotation was computed. [2020-07-20 22:20:04,627 INFO L268 CegarLoopResult]: For program point L177-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,627 INFO L268 CegarLoopResult]: For program point L144-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,628 INFO L268 CegarLoopResult]: For program point L111-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,628 INFO L268 CegarLoopResult]: For program point L78-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,628 INFO L268 CegarLoopResult]: For program point L45-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,628 INFO L268 CegarLoopResult]: For program point L442(lines 442 572) no Hoare annotation was computed. [2020-07-20 22:20:04,628 INFO L268 CegarLoopResult]: For program point L277(lines 277 572) no Hoare annotation was computed. [2020-07-20 22:20:04,628 INFO L268 CegarLoopResult]: For program point L244(lines 244 572) no Hoare annotation was computed. [2020-07-20 22:20:04,628 INFO L268 CegarLoopResult]: For program point L178(line 178) no Hoare annotation was computed. [2020-07-20 22:20:04,629 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-07-20 22:20:04,629 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-07-20 22:20:04,629 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-07-20 22:20:04,629 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-20 22:20:04,629 INFO L268 CegarLoopResult]: For program point L509(lines 509 572) no Hoare annotation was computed. [2020-07-20 22:20:04,629 INFO L268 CegarLoopResult]: For program point L476(lines 476 572) no Hoare annotation was computed. [2020-07-20 22:20:04,629 INFO L268 CegarLoopResult]: For program point L378(lines 378 572) no Hoare annotation was computed. [2020-07-20 22:20:04,630 INFO L268 CegarLoopResult]: For program point L345(lines 345 572) no Hoare annotation was computed. [2020-07-20 22:20:04,630 INFO L268 CegarLoopResult]: For program point L312(lines 312 572) no Hoare annotation was computed. [2020-07-20 22:20:04,630 INFO L268 CegarLoopResult]: For program point L180-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,630 INFO L268 CegarLoopResult]: For program point L147-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,630 INFO L268 CegarLoopResult]: For program point L114-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,630 INFO L268 CegarLoopResult]: For program point L81-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,630 INFO L268 CegarLoopResult]: For program point L48-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,630 INFO L268 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2020-07-20 22:20:04,630 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-07-20 22:20:04,631 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-20 22:20:04,631 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-07-20 22:20:04,631 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-07-20 22:20:04,631 INFO L268 CegarLoopResult]: For program point L545(lines 545 572) no Hoare annotation was computed. [2020-07-20 22:20:04,631 INFO L268 CegarLoopResult]: For program point L215(lines 215 572) no Hoare annotation was computed. [2020-07-20 22:20:04,631 INFO L268 CegarLoopResult]: For program point L414(lines 414 572) no Hoare annotation was computed. [2020-07-20 22:20:04,631 INFO L268 CegarLoopResult]: For program point L249(lines 249 572) no Hoare annotation was computed. [2020-07-20 22:20:04,632 INFO L268 CegarLoopResult]: For program point L183-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,632 INFO L268 CegarLoopResult]: For program point L150-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,632 INFO L268 CegarLoopResult]: For program point L117-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,632 INFO L268 CegarLoopResult]: For program point L84-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,632 INFO L268 CegarLoopResult]: For program point L51-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,632 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,632 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,633 INFO L268 CegarLoopResult]: For program point L514(lines 514 572) no Hoare annotation was computed. [2020-07-20 22:20:04,633 INFO L268 CegarLoopResult]: For program point L481(lines 481 572) no Hoare annotation was computed. [2020-07-20 22:20:04,633 INFO L268 CegarLoopResult]: For program point L448(lines 448 572) no Hoare annotation was computed. [2020-07-20 22:20:04,633 INFO L268 CegarLoopResult]: For program point L283(lines 283 572) no Hoare annotation was computed. [2020-07-20 22:20:04,633 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-07-20 22:20:04,633 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-07-20 22:20:04,633 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-07-20 22:20:04,633 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-07-20 22:20:04,634 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-07-20 22:20:04,634 INFO L268 CegarLoopResult]: For program point L548(lines 548 572) no Hoare annotation was computed. [2020-07-20 22:20:04,634 INFO L268 CegarLoopResult]: For program point L383(lines 383 572) no Hoare annotation was computed. [2020-07-20 22:20:04,634 INFO L268 CegarLoopResult]: For program point L317(lines 317 572) no Hoare annotation was computed. [2020-07-20 22:20:04,634 INFO L268 CegarLoopResult]: For program point L351(lines 351 572) no Hoare annotation was computed. [2020-07-20 22:20:04,634 INFO L268 CegarLoopResult]: For program point L186-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,634 INFO L268 CegarLoopResult]: For program point L153-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,634 INFO L268 CegarLoopResult]: For program point L120-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,635 INFO L268 CegarLoopResult]: For program point L87-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,635 INFO L268 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-07-20 22:20:04,635 INFO L268 CegarLoopResult]: For program point L54-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,635 INFO L268 CegarLoopResult]: For program point L21-2(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,635 INFO L268 CegarLoopResult]: For program point L517(lines 517 572) no Hoare annotation was computed. [2020-07-20 22:20:04,635 INFO L268 CegarLoopResult]: For program point L286(lines 286 572) no Hoare annotation was computed. [2020-07-20 22:20:04,635 INFO L268 CegarLoopResult]: For program point L220(lines 220 572) no Hoare annotation was computed. [2020-07-20 22:20:04,635 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-20 22:20:04,635 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-07-20 22:20:04,636 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-07-20 22:20:04,636 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-07-20 22:20:04,636 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-07-20 22:20:04,636 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-20 22:20:04,636 INFO L268 CegarLoopResult]: For program point L419(lines 419 572) no Hoare annotation was computed. [2020-07-20 22:20:04,636 INFO L268 CegarLoopResult]: For program point L320(lines 320 572) no Hoare annotation was computed. [2020-07-20 22:20:04,636 INFO L268 CegarLoopResult]: For program point L254(lines 254 572) no Hoare annotation was computed. [2020-07-20 22:20:04,636 INFO L268 CegarLoopResult]: For program point L354(lines 354 572) no Hoare annotation was computed. [2020-07-20 22:20:04,636 INFO L268 CegarLoopResult]: For program point L189-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,637 INFO L268 CegarLoopResult]: For program point L156-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,637 INFO L268 CegarLoopResult]: For program point L123-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,637 INFO L268 CegarLoopResult]: For program point L90-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,637 INFO L268 CegarLoopResult]: For program point L57-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,637 INFO L268 CegarLoopResult]: For program point L24-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,637 INFO L268 CegarLoopResult]: For program point L487(lines 487 572) no Hoare annotation was computed. [2020-07-20 22:20:04,637 INFO L268 CegarLoopResult]: For program point L454(lines 454 572) no Hoare annotation was computed. [2020-07-20 22:20:04,637 INFO L268 CegarLoopResult]: For program point L388(lines 388 572) no Hoare annotation was computed. [2020-07-20 22:20:04,637 INFO L268 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2020-07-20 22:20:04,638 INFO L268 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2020-07-20 22:20:04,638 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-07-20 22:20:04,638 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-07-20 22:20:04,638 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-07-20 22:20:04,638 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-20 22:20:04,638 INFO L268 CegarLoopResult]: For program point L554(lines 554 572) no Hoare annotation was computed. [2020-07-20 22:20:04,638 INFO L268 CegarLoopResult]: For program point L323(lines 323 572) no Hoare annotation was computed. [2020-07-20 22:20:04,639 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 20 574) the Hoare annotation is: (let ((.cse4 (<= ~a10~0 |old(~a10~0)|)) (.cse5 (<= |old(~a10~0)| ~a10~0)) (.cse6 (<= ~a19~0 |old(~a19~0)|)) (.cse7 (= ~a1~0 |old(~a1~0)|))) (let ((.cse3 (not (<= |old(~a19~0)| 9))) (.cse0 (and .cse4 .cse5 .cse6 .cse7))) (and (or .cse0 (forall ((v_prenex_11 Int)) (let ((.cse2 (mod v_prenex_11 25))) (let ((.cse1 (mod (+ (* .cse2 5) 10) 25))) (or (= 0 .cse1) (not (< (* 5 .cse2) 65)) (not (<= .cse1 (+ |old(~a1~0)| 12))) (not (< v_prenex_11 0)) (= 0 .cse2))))) .cse3) (or (not (<= 4 |old(~a10~0)|)) .cse0 .cse3) (or (and .cse4 (or (<= 9 ~a19~0) (<= 23 ~a1~0)) .cse5 .cse6 .cse7) (not (<= 9 |old(~a19~0)|)) .cse3 (not (<= 2 |old(~a10~0)|))) (or .cse0 (not (<= |old(~a10~0)| 2)))))) [2020-07-20 22:20:04,639 INFO L268 CegarLoopResult]: For program point L357(lines 357 572) no Hoare annotation was computed. [2020-07-20 22:20:04,639 INFO L268 CegarLoopResult]: For program point L291(lines 291 572) no Hoare annotation was computed. [2020-07-20 22:20:04,639 INFO L268 CegarLoopResult]: For program point L225(lines 225 572) no Hoare annotation was computed. [2020-07-20 22:20:04,639 INFO L268 CegarLoopResult]: For program point L192-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,639 INFO L268 CegarLoopResult]: For program point L159-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,639 INFO L268 CegarLoopResult]: For program point L126-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,639 INFO L268 CegarLoopResult]: For program point L93-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,639 INFO L268 CegarLoopResult]: For program point L60-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,640 INFO L268 CegarLoopResult]: For program point L27-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,640 INFO L268 CegarLoopResult]: For program point L523(lines 523 572) no Hoare annotation was computed. [2020-07-20 22:20:04,640 INFO L268 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2020-07-20 22:20:04,640 INFO L268 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-07-20 22:20:04,640 INFO L268 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-07-20 22:20:04,640 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-07-20 22:20:04,640 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-07-20 22:20:04,640 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-07-20 22:20:04,640 INFO L268 CegarLoopResult]: For program point L557(lines 557 572) no Hoare annotation was computed. [2020-07-20 22:20:04,640 INFO L268 CegarLoopResult]: For program point L425(lines 425 572) no Hoare annotation was computed. [2020-07-20 22:20:04,641 INFO L268 CegarLoopResult]: For program point L326(lines 326 572) no Hoare annotation was computed. [2020-07-20 22:20:04,641 INFO L268 CegarLoopResult]: For program point L260(lines 260 572) no Hoare annotation was computed. [2020-07-20 22:20:04,641 INFO L268 CegarLoopResult]: For program point L393(lines 393 572) no Hoare annotation was computed. [2020-07-20 22:20:04,641 INFO L268 CegarLoopResult]: For program point L360(lines 360 572) no Hoare annotation was computed. [2020-07-20 22:20:04,641 INFO L268 CegarLoopResult]: For program point L195-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,641 INFO L268 CegarLoopResult]: For program point L162-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,641 INFO L268 CegarLoopResult]: For program point L129-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,641 INFO L268 CegarLoopResult]: For program point L96-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,641 INFO L268 CegarLoopResult]: For program point L63-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,642 INFO L268 CegarLoopResult]: For program point L30-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,642 INFO L268 CegarLoopResult]: For program point L526(lines 526 572) no Hoare annotation was computed. [2020-07-20 22:20:04,642 INFO L268 CegarLoopResult]: For program point L493(lines 493 572) no Hoare annotation was computed. [2020-07-20 22:20:04,642 INFO L268 CegarLoopResult]: For program point L460(lines 460 572) no Hoare annotation was computed. [2020-07-20 22:20:04,642 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-07-20 22:20:04,642 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-07-20 22:20:04,642 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-07-20 22:20:04,642 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-07-20 22:20:04,642 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-07-20 22:20:04,643 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-20 22:20:04,643 INFO L268 CegarLoopResult]: For program point L329(lines 329 572) no Hoare annotation was computed. [2020-07-20 22:20:04,643 INFO L268 CegarLoopResult]: For program point L296(lines 296 572) no Hoare annotation was computed. [2020-07-20 22:20:04,643 INFO L268 CegarLoopResult]: For program point L231(lines 231 572) no Hoare annotation was computed. [2020-07-20 22:20:04,643 INFO L268 CegarLoopResult]: For program point L198-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,643 INFO L268 CegarLoopResult]: For program point L165-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,643 INFO L268 CegarLoopResult]: For program point L132-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,643 INFO L268 CegarLoopResult]: For program point L99-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,643 INFO L268 CegarLoopResult]: For program point L66-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,644 INFO L268 CegarLoopResult]: For program point L33-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:20:04,644 INFO L268 CegarLoopResult]: For program point L529(lines 529 572) no Hoare annotation was computed. [2020-07-20 22:20:04,644 INFO L268 CegarLoopResult]: For program point L430(lines 430 572) no Hoare annotation was computed. [2020-07-20 22:20:04,644 INFO L268 CegarLoopResult]: For program point L265(lines 265 572) no Hoare annotation was computed. [2020-07-20 22:20:04,644 INFO L268 CegarLoopResult]: For program point L199(line 199) no Hoare annotation was computed. [2020-07-20 22:20:04,644 INFO L268 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2020-07-20 22:20:04,644 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-07-20 22:20:04,644 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-07-20 22:20:04,645 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-07-20 22:20:04,645 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-20 22:20:04,645 INFO L268 CegarLoopResult]: For program point L563(lines 563 572) no Hoare annotation was computed. [2020-07-20 22:20:04,645 INFO L268 CegarLoopResult]: For program point L398(lines 398 572) no Hoare annotation was computed. [2020-07-20 22:20:04,645 INFO L268 CegarLoopResult]: For program point L365(lines 365 572) no Hoare annotation was computed. [2020-07-20 22:20:04,645 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 22:20:04,645 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a10~0 0) (<= ~a19~0 9) (<= 9 ~a19~0) (= 23 ~a1~0)) [2020-07-20 22:20:04,645 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 22:20:04,645 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 22:20:04,645 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 576 592) the Hoare annotation is: (or (not (= 23 |old(~a1~0)|)) (not (<= |old(~a10~0)| 0)) (not (<= 9 |old(~a19~0)|)) (not (<= |old(~a19~0)| 9)) (and (<= 9 ~a19~0) (<= ~a10~0 |old(~a10~0)|) (<= |old(~a10~0)| ~a10~0) (<= ~a19~0 |old(~a19~0)|) (= ~a1~0 |old(~a1~0)|))) [2020-07-20 22:20:04,645 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 576 592) no Hoare annotation was computed. [2020-07-20 22:20:04,646 INFO L264 CegarLoopResult]: At program point L590(line 590) the Hoare annotation is: (let ((.cse0 (<= ~a19~0 9))) (or (and .cse0 (<= 9 ~a19~0)) (not (<= |old(~a10~0)| 0)) (not (= 23 |old(~a1~0)|)) (and .cse0 (<= 4 ~a10~0)) (not (<= 9 |old(~a19~0)|)) (and (<= ~a19~0 8) (exists ((v_prenex_11 Int)) (let ((.cse2 (mod v_prenex_11 25))) (let ((.cse1 (mod (+ (* .cse2 5) 10) 25))) (and (not (= 0 .cse1)) (< (* 5 .cse2) 65) (<= .cse1 (+ ~a1~0 12)) (< v_prenex_11 0) (not (= 0 .cse2))))))) (<= ~a10~0 2) (not (<= |old(~a19~0)| 9)))) [2020-07-20 22:20:04,646 INFO L268 CegarLoopResult]: For program point L590-1(line 590) no Hoare annotation was computed. [2020-07-20 22:20:04,646 INFO L268 CegarLoopResult]: For program point L587(line 587) no Hoare annotation was computed. [2020-07-20 22:20:04,646 INFO L264 CegarLoopResult]: At program point L582-2(lines 582 591) the Hoare annotation is: (let ((.cse0 (<= ~a19~0 9))) (or (and .cse0 (<= 9 ~a19~0)) (not (<= |old(~a10~0)| 0)) (not (= 23 |old(~a1~0)|)) (and .cse0 (<= 4 ~a10~0)) (not (<= 9 |old(~a19~0)|)) (and (<= ~a19~0 8) (exists ((v_prenex_11 Int)) (let ((.cse2 (mod v_prenex_11 25))) (let ((.cse1 (mod (+ (* .cse2 5) 10) 25))) (and (not (= 0 .cse1)) (< (* 5 .cse2) 65) (<= .cse1 (+ ~a1~0 12)) (< v_prenex_11 0) (not (= 0 .cse2))))))) (<= ~a10~0 2) (not (<= |old(~a19~0)| 9)))) [2020-07-20 22:20:04,646 INFO L268 CegarLoopResult]: For program point L582-3(lines 576 592) no Hoare annotation was computed. [2020-07-20 22:20:04,656 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] [2020-07-20 22:20:04,657 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] [2020-07-20 22:20:04,658 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] [2020-07-20 22:20:04,658 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] [2020-07-20 22:20:04,658 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] [2020-07-20 22:20:04,665 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] [2020-07-20 22:20:04,665 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] [2020-07-20 22:20:04,666 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] [2020-07-20 22:20:04,666 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] [2020-07-20 22:20:04,666 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] [2020-07-20 22:20:04,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 10:20:04 BoogieIcfgContainer [2020-07-20 22:20:04,672 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 22:20:04,673 INFO L168 Benchmark]: Toolchain (without parser) took 813060.28 ms. Allocated memory was 145.2 MB in the beginning and 564.1 MB in the end (delta: 418.9 MB). Free memory was 101.6 MB in the beginning and 402.2 MB in the end (delta: -300.5 MB). Peak memory consumption was 470.2 MB. Max. memory is 7.1 GB. [2020-07-20 22:20:04,674 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 145.2 MB. Free memory is still 121.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 22:20:04,675 INFO L168 Benchmark]: CACSL2BoogieTranslator took 750.96 ms. Allocated memory was 145.2 MB in the beginning and 205.0 MB in the end (delta: 59.8 MB). Free memory was 101.2 MB in the beginning and 169.2 MB in the end (delta: -68.1 MB). Peak memory consumption was 30.4 MB. Max. memory is 7.1 GB. [2020-07-20 22:20:04,675 INFO L168 Benchmark]: Boogie Preprocessor took 112.73 ms. Allocated memory is still 205.0 MB. Free memory was 169.2 MB in the beginning and 164.9 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-07-20 22:20:04,679 INFO L168 Benchmark]: RCFGBuilder took 1409.48 ms. Allocated memory was 205.0 MB in the beginning and 237.5 MB in the end (delta: 32.5 MB). Free memory was 164.9 MB in the beginning and 180.1 MB in the end (delta: -15.2 MB). Peak memory consumption was 82.0 MB. Max. memory is 7.1 GB. [2020-07-20 22:20:04,679 INFO L168 Benchmark]: TraceAbstraction took 810780.74 ms. Allocated memory was 237.5 MB in the beginning and 564.1 MB in the end (delta: 326.6 MB). Free memory was 180.1 MB in the beginning and 402.2 MB in the end (delta: -222.1 MB). Peak memory consumption was 456.4 MB. Max. memory is 7.1 GB. [2020-07-20 22:20:04,685 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 145.2 MB. Free memory is still 121.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 750.96 ms. Allocated memory was 145.2 MB in the beginning and 205.0 MB in the end (delta: 59.8 MB). Free memory was 101.2 MB in the beginning and 169.2 MB in the end (delta: -68.1 MB). Peak memory consumption was 30.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.73 ms. Allocated memory is still 205.0 MB. Free memory was 169.2 MB in the beginning and 164.9 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1409.48 ms. Allocated memory was 205.0 MB in the beginning and 237.5 MB in the end (delta: 32.5 MB). Free memory was 164.9 MB in the beginning and 180.1 MB in the end (delta: -15.2 MB). Peak memory consumption was 82.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 810780.74 ms. Allocated memory was 237.5 MB in the beginning and 564.1 MB in the end (delta: 326.6 MB). Free memory was 180.1 MB in the beginning and 402.2 MB in the end (delta: -222.1 MB). Peak memory consumption was 456.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 187]: 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 [2020-07-20 22:20:04,695 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] [2020-07-20 22:20:04,696 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] [2020-07-20 22:20:04,696 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] [2020-07-20 22:20:04,696 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] [2020-07-20 22:20:04,696 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] [2020-07-20 22:20:04,697 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] [2020-07-20 22:20:04,697 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] [2020-07-20 22:20:04,697 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] [2020-07-20 22:20:04,697 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] [2020-07-20 22:20:04,698 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] Derived loop invariant: (((((((a19 <= 9 && 9 <= a19) || !(\old(a10) <= 0)) || !(23 == \old(a1))) || (a19 <= 9 && 4 <= a10)) || !(9 <= \old(a19))) || (a19 <= 8 && (\exists v_prenex_11 : int :: (((!(0 == (v_prenex_11 % 25 * 5 + 10) % 25) && 5 * (v_prenex_11 % 25) < 65) && (v_prenex_11 % 25 * 5 + 10) % 25 <= a1 + 12) && v_prenex_11 < 0) && !(0 == v_prenex_11 % 25)))) || a10 <= 2) || !(\old(a19) <= 9) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 792.0s, OverallIterations: 12, TraceHistogramMax: 4, AutomataDifference: 726.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 18.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 529 SDtfs, 3474 SDslu, 485 SDs, 0 SdLazy, 10012 SolverSat, 1653 SolverUnsat, 251 SolverUnknown, 0 SolverNotchecked, 568.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4628 GetRequests, 4536 SyntacticMatches, 8 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 182.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3304occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 12 MinimizatonAttempts, 1839 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 105 PreInvPairs, 183 NumberOfFragments, 358 HoareAnnotationTreeSize, 105 FomulaSimplifications, 23781 FormulaSimplificationTreeSizeReduction, 1.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 16023 FormulaSimplificationTreeSizeReductionInter, 17.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 60.3s InterpolantComputationTime, 3248 NumberOfCodeBlocks, 3248 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 4305 ConstructedInterpolants, 75 QuantifiedInterpolants, 4839279 SizeOfPredicates, 19 NumberOfNonLiveVariables, 5313 ConjunctsInSsa, 80 ConjunctsInUnsatCore, 15 InterpolantComputations, 8 PerfectInterpolantSequences, 4104/4279 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...