/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 BIGGEST_EQUIVALENCE_CLASS --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_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 22:58:07,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 22:58:07,623 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 22:58:07,641 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 22:58:07,641 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 22:58:07,642 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 22:58:07,643 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 22:58:07,645 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 22:58:07,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 22:58:07,647 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 22:58:07,648 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 22:58:07,649 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 22:58:07,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 22:58:07,651 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 22:58:07,652 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 22:58:07,653 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 22:58:07,654 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 22:58:07,655 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 22:58:07,656 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 22:58:07,658 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 22:58:07,660 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 22:58:07,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 22:58:07,662 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 22:58:07,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 22:58:07,666 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 22:58:07,666 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 22:58:07,666 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 22:58:07,667 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 22:58:07,667 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 22:58:07,668 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 22:58:07,669 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 22:58:07,669 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 22:58:07,670 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 22:58:07,671 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 22:58:07,672 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 22:58:07,672 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 22:58:07,673 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 22:58:07,673 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 22:58:07,673 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 22:58:07,674 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 22:58:07,675 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 22:58:07,676 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 22:58:07,694 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 22:58:07,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 22:58:07,695 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 22:58:07,695 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 22:58:07,695 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 22:58:07,696 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 22:58:07,696 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 22:58:07,696 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 22:58:07,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 22:58:07,697 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 22:58:07,697 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 22:58:07,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 22:58:07,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 22:58:07,697 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 22:58:07,698 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 22:58:07,698 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 22:58:07,698 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 22:58:07,698 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 22:58:07,698 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 22:58:07,699 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 22:58:07,699 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 22:58:07,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 22:58:07,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 22:58:07,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 22:58:07,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 22:58:07,700 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 22:58:07,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:58:07,700 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 22:58:07,701 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 22:58:07,701 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 -> BIGGEST_EQUIVALENCE_CLASS 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 [2020-07-21 22:58:08,001 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 22:58:08,020 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 22:58:08,024 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 22:58:08,025 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 22:58:08,026 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 22:58:08,028 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label21.c [2020-07-21 22:58:08,105 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c78024e25/18b021026a654137abd87a8592f34dfe/FLAG3fad6bb6e [2020-07-21 22:58:08,719 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 22:58:08,719 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label21.c [2020-07-21 22:58:08,740 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c78024e25/18b021026a654137abd87a8592f34dfe/FLAG3fad6bb6e [2020-07-21 22:58:08,945 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c78024e25/18b021026a654137abd87a8592f34dfe [2020-07-21 22:58:08,954 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 22:58:08,957 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 22:58:08,958 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 22:58:08,958 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 22:58:08,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 22:58:08,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:58:08" (1/1) ... [2020-07-21 22:58:08,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75f6be4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:08, skipping insertion in model container [2020-07-21 22:58:08,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:58:08" (1/1) ... [2020-07-21 22:58:08,974 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 22:58:09,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 22:58:09,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:58:09,606 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 22:58:09,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:58:09,724 INFO L208 MainTranslator]: Completed translation [2020-07-21 22:58:09,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:09 WrapperNode [2020-07-21 22:58:09,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 22:58:09,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 22:58:09,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 22:58:09,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 22:58:09,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:09" (1/1) ... [2020-07-21 22:58:09,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:09" (1/1) ... [2020-07-21 22:58:09,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:09" (1/1) ... [2020-07-21 22:58:09,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:09" (1/1) ... [2020-07-21 22:58:09,796 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:09" (1/1) ... [2020-07-21 22:58:09,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:09" (1/1) ... [2020-07-21 22:58:09,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:09" (1/1) ... [2020-07-21 22:58:09,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 22:58:09,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 22:58:09,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 22:58:09,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 22:58:09,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 22:58:09,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 22:58:09,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 22:58:09,916 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 22:58:09,916 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 22:58:09,916 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 22:58:09,917 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 22:58:09,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 22:58:09,918 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 22:58:09,918 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 22:58:09,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 22:58:09,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 22:58:11,224 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 22:58:11,225 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 22:58:11,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:58:11 BoogieIcfgContainer [2020-07-21 22:58:11,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 22:58:11,232 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 22:58:11,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 22:58:11,236 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 22:58:11,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:58:08" (1/3) ... [2020-07-21 22:58:11,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66af00c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:58:11, skipping insertion in model container [2020-07-21 22:58:11,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:09" (2/3) ... [2020-07-21 22:58:11,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66af00c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:58:11, skipping insertion in model container [2020-07-21 22:58:11,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:58:11" (3/3) ... [2020-07-21 22:58:11,240 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label21.c [2020-07-21 22:58:11,250 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 22:58:11,259 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 22:58:11,273 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 22:58:11,299 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 22:58:11,299 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 22:58:11,299 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 22:58:11,300 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 22:58:11,300 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 22:58:11,300 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 22:58:11,300 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 22:58:11,301 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 22:58:11,324 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-07-21 22:58:11,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-21 22:58:11,332 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:58:11,333 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] [2020-07-21 22:58:11,334 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:58:11,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:58:11,340 INFO L82 PathProgramCache]: Analyzing trace with hash -689743650, now seen corresponding path program 1 times [2020-07-21 22:58:11,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:58:11,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304676930] [2020-07-21 22:58:11,349 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 [2020-07-21 22:58:11,483 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:58:11,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:58:11,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 22:58:11,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:58:11,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:58:11,554 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:58:11,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304676930] [2020-07-21 22:58:11,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:58:11,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 22:58:11,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886103704] [2020-07-21 22:58:11,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 22:58:11,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:58:11,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 22:58:11,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:58:11,580 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2020-07-21 22:58:12,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:58:12,662 INFO L93 Difference]: Finished difference Result 586 states and 1004 transitions. [2020-07-21 22:58:12,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 22:58:12,664 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-07-21 22:58:12,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:58:12,682 INFO L225 Difference]: With dead ends: 586 [2020-07-21 22:58:12,682 INFO L226 Difference]: Without dead ends: 294 [2020-07-21 22:58:12,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:58:12,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-07-21 22:58:12,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2020-07-21 22:58:12,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-07-21 22:58:12,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 426 transitions. [2020-07-21 22:58:12,765 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 426 transitions. Word has length 33 [2020-07-21 22:58:12,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:58:12,765 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 426 transitions. [2020-07-21 22:58:12,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 22:58:12,766 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 426 transitions. [2020-07-21 22:58:12,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-07-21 22:58:12,771 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:58:12,771 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:58:12,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:58:12,974 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:58:12,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:58:12,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1491813086, now seen corresponding path program 1 times [2020-07-21 22:58:12,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:58:12,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833002602] [2020-07-21 22:58:12,975 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 [2020-07-21 22:58:13,074 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:58:13,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:58:13,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 22:58:13,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:58:13,159 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:58:13,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:58:13,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833002602] [2020-07-21 22:58:13,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:58:13,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 22:58:13,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860353991] [2020-07-21 22:58:13,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 22:58:13,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:58:13,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 22:58:13,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 22:58:13,164 INFO L87 Difference]: Start difference. First operand 294 states and 426 transitions. Second operand 5 states. [2020-07-21 22:58:14,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:58:14,232 INFO L93 Difference]: Finished difference Result 890 states and 1316 transitions. [2020-07-21 22:58:14,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 22:58:14,233 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-07-21 22:58:14,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:58:14,240 INFO L225 Difference]: With dead ends: 890 [2020-07-21 22:58:14,241 INFO L226 Difference]: Without dead ends: 602 [2020-07-21 22:58:14,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-21 22:58:14,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-07-21 22:58:14,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 590. [2020-07-21 22:58:14,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-07-21 22:58:14,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 776 transitions. [2020-07-21 22:58:14,286 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 776 transitions. Word has length 107 [2020-07-21 22:58:14,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:58:14,287 INFO L479 AbstractCegarLoop]: Abstraction has 590 states and 776 transitions. [2020-07-21 22:58:14,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 22:58:14,287 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 776 transitions. [2020-07-21 22:58:14,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-07-21 22:58:14,290 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:58:14,290 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:58:14,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:58:14,506 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:58:14,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:58:14,507 INFO L82 PathProgramCache]: Analyzing trace with hash 313211425, now seen corresponding path program 1 times [2020-07-21 22:58:14,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:58:14,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036950854] [2020-07-21 22:58:14,509 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 [2020-07-21 22:58:14,595 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:58:14,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:58:14,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:58:14,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:58:14,644 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:58:14,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:58:14,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036950854] [2020-07-21 22:58:14,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:58:14,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 22:58:14,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259332895] [2020-07-21 22:58:14,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 22:58:14,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:58:14,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 22:58:14,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:58:14,647 INFO L87 Difference]: Start difference. First operand 590 states and 776 transitions. Second operand 3 states. [2020-07-21 22:58:15,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:58:15,281 INFO L93 Difference]: Finished difference Result 1174 states and 1554 transitions. [2020-07-21 22:58:15,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 22:58:15,281 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 112 [2020-07-21 22:58:15,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:58:15,286 INFO L225 Difference]: With dead ends: 1174 [2020-07-21 22:58:15,286 INFO L226 Difference]: Without dead ends: 590 [2020-07-21 22:58:15,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:58:15,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2020-07-21 22:58:15,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 590. [2020-07-21 22:58:15,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-07-21 22:58:15,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 755 transitions. [2020-07-21 22:58:15,314 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 755 transitions. Word has length 112 [2020-07-21 22:58:15,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:58:15,315 INFO L479 AbstractCegarLoop]: Abstraction has 590 states and 755 transitions. [2020-07-21 22:58:15,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 22:58:15,315 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 755 transitions. [2020-07-21 22:58:15,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-07-21 22:58:15,319 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:58:15,319 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:58:15,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:58:15,533 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:58:15,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:58:15,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1770374070, now seen corresponding path program 1 times [2020-07-21 22:58:15,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:58:15,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800949527] [2020-07-21 22:58:15,536 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 [2020-07-21 22:58:15,627 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:58:15,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:58:15,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 22:58:15,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:58:15,693 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:58:15,693 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:58:15,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800949527] [2020-07-21 22:58:15,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:58:15,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 22:58:15,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876701042] [2020-07-21 22:58:15,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 22:58:15,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:58:15,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 22:58:15,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-21 22:58:15,697 INFO L87 Difference]: Start difference. First operand 590 states and 755 transitions. Second operand 5 states. [2020-07-21 22:58:16,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:58:16,665 INFO L93 Difference]: Finished difference Result 1776 states and 2344 transitions. [2020-07-21 22:58:16,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 22:58:16,666 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-07-21 22:58:16,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:58:16,678 INFO L225 Difference]: With dead ends: 1776 [2020-07-21 22:58:16,679 INFO L226 Difference]: Without dead ends: 1192 [2020-07-21 22:58:16,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 22:58:16,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2020-07-21 22:58:16,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1172. [2020-07-21 22:58:16,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1172 states. [2020-07-21 22:58:16,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1467 transitions. [2020-07-21 22:58:16,751 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1467 transitions. Word has length 133 [2020-07-21 22:58:16,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:58:16,753 INFO L479 AbstractCegarLoop]: Abstraction has 1172 states and 1467 transitions. [2020-07-21 22:58:16,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 22:58:16,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1467 transitions. [2020-07-21 22:58:16,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-07-21 22:58:16,768 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:58:16,768 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:58:16,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:58:16,983 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:58:16,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:58:16,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1042464845, now seen corresponding path program 1 times [2020-07-21 22:58:16,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:58:16,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323490181] [2020-07-21 22:58:16,985 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 [2020-07-21 22:58:17,097 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:58:17,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:58:17,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 22:58:17,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:58:17,223 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:58:17,223 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:58:17,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323490181] [2020-07-21 22:58:17,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:58:17,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 22:58:17,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663251619] [2020-07-21 22:58:17,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 22:58:17,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:58:17,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 22:58:17,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 22:58:17,228 INFO L87 Difference]: Start difference. First operand 1172 states and 1467 transitions. Second operand 5 states. [2020-07-21 22:58:18,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:58:18,144 INFO L93 Difference]: Finished difference Result 2507 states and 3140 transitions. [2020-07-21 22:58:18,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 22:58:18,148 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-07-21 22:58:18,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:58:18,158 INFO L225 Difference]: With dead ends: 2507 [2020-07-21 22:58:18,158 INFO L226 Difference]: Without dead ends: 1341 [2020-07-21 22:58:18,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:58:18,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2020-07-21 22:58:18,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1331. [2020-07-21 22:58:18,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1331 states. [2020-07-21 22:58:18,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 1653 transitions. [2020-07-21 22:58:18,221 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 1653 transitions. Word has length 150 [2020-07-21 22:58:18,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:58:18,222 INFO L479 AbstractCegarLoop]: Abstraction has 1331 states and 1653 transitions. [2020-07-21 22:58:18,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 22:58:18,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 1653 transitions. [2020-07-21 22:58:18,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-07-21 22:58:18,234 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:58:18,234 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:58:18,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:58:18,449 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:58:18,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:58:18,450 INFO L82 PathProgramCache]: Analyzing trace with hash -72773158, now seen corresponding path program 1 times [2020-07-21 22:58:18,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:58:18,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958901204] [2020-07-21 22:58:18,452 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 [2020-07-21 22:58:18,545 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:58:18,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:58:18,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 22:58:18,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:58:20,747 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:58:20,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:58:20,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958901204] [2020-07-21 22:58:20,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 22:58:20,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-07-21 22:58:20,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830475646] [2020-07-21 22:58:20,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 22:58:20,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:58:20,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 22:58:20,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-21 22:58:20,817 INFO L87 Difference]: Start difference. First operand 1331 states and 1653 transitions. Second operand 6 states. [2020-07-21 22:58:23,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:58:23,084 INFO L93 Difference]: Finished difference Result 3427 states and 4530 transitions. [2020-07-21 22:58:23,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 22:58:23,085 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 167 [2020-07-21 22:58:23,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:58:23,105 INFO L225 Difference]: With dead ends: 3427 [2020-07-21 22:58:23,106 INFO L226 Difference]: Without dead ends: 2245 [2020-07-21 22:58:23,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 188 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-07-21 22:58:23,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2245 states. [2020-07-21 22:58:23,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2245 to 2219. [2020-07-21 22:58:23,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2219 states. [2020-07-21 22:58:23,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2219 states to 2219 states and 2818 transitions. [2020-07-21 22:58:23,192 INFO L78 Accepts]: Start accepts. Automaton has 2219 states and 2818 transitions. Word has length 167 [2020-07-21 22:58:23,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:58:23,193 INFO L479 AbstractCegarLoop]: Abstraction has 2219 states and 2818 transitions. [2020-07-21 22:58:23,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 22:58:23,193 INFO L276 IsEmpty]: Start isEmpty. Operand 2219 states and 2818 transitions. [2020-07-21 22:58:23,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-07-21 22:58:23,195 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:58:23,196 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 22:58:23,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:58:23,409 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:58:23,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:58:23,410 INFO L82 PathProgramCache]: Analyzing trace with hash 465383070, now seen corresponding path program 1 times [2020-07-21 22:58:23,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:58:23,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1526534865] [2020-07-21 22:58:23,411 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 [2020-07-21 22:58:23,516 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:58:23,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:58:23,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:58:23,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:58:23,579 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 120 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:58:23,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:58:23,692 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 120 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:58:23,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1526534865] [2020-07-21 22:58:23,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:58:23,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 22:58:23,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878613706] [2020-07-21 22:58:23,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 22:58:23,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:58:23,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 22:58:23,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 22:58:23,694 INFO L87 Difference]: Start difference. First operand 2219 states and 2818 transitions. Second operand 6 states. [2020-07-21 22:58:24,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:58:24,718 INFO L93 Difference]: Finished difference Result 4899 states and 6362 transitions. [2020-07-21 22:58:24,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 22:58:24,719 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 177 [2020-07-21 22:58:24,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:58:24,733 INFO L225 Difference]: With dead ends: 4899 [2020-07-21 22:58:24,733 INFO L226 Difference]: Without dead ends: 2829 [2020-07-21 22:58:24,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 348 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-21 22:58:24,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2829 states. [2020-07-21 22:58:24,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2829 to 2815. [2020-07-21 22:58:24,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2815 states. [2020-07-21 22:58:24,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 3491 transitions. [2020-07-21 22:58:24,817 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 3491 transitions. Word has length 177 [2020-07-21 22:58:24,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:58:24,818 INFO L479 AbstractCegarLoop]: Abstraction has 2815 states and 3491 transitions. [2020-07-21 22:58:24,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 22:58:24,818 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 3491 transitions. [2020-07-21 22:58:24,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-07-21 22:58:24,821 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:58:24,821 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 22:58:25,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:58:25,035 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:58:25,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:58:25,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1698369206, now seen corresponding path program 1 times [2020-07-21 22:58:25,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:58:25,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916398150] [2020-07-21 22:58:25,037 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 [2020-07-21 22:58:25,134 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:58:25,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:58:25,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 22:58:25,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:58:25,210 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-07-21 22:58:25,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:58:25,348 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-07-21 22:58:25,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [916398150] [2020-07-21 22:58:25,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-21 22:58:25,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2020-07-21 22:58:25,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281568669] [2020-07-21 22:58:25,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 22:58:25,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:58:25,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 22:58:25,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 22:58:25,351 INFO L87 Difference]: Start difference. First operand 2815 states and 3491 transitions. Second operand 4 states. [2020-07-21 22:58:26,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:58:26,106 INFO L93 Difference]: Finished difference Result 3536 states and 4457 transitions. [2020-07-21 22:58:26,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 22:58:26,110 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 183 [2020-07-21 22:58:26,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:58:26,111 INFO L225 Difference]: With dead ends: 3536 [2020-07-21 22:58:26,111 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 22:58:26,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 22:58:26,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 22:58:26,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 22:58:26,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 22:58:26,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 22:58:26,119 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 183 [2020-07-21 22:58:26,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:58:26,119 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 22:58:26,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 22:58:26,120 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 22:58:26,120 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 22:58:26,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:58:26,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 22:58:27,025 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 41 [2020-07-21 22:58:27,196 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 22:58:27,197 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a10~0 |old(~a10~0)|) (or (< 7 ~a19~0) (< |old(~a19~0)| 8)) (<= ~a19~0 |old(~a19~0)|) (= ~a1~0 |old(~a1~0)|)) [2020-07-21 22:58:27,197 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 22:58:27,197 INFO L268 CegarLoopResult]: For program point L465(lines 465 572) no Hoare annotation was computed. [2020-07-21 22:58:27,197 INFO L268 CegarLoopResult]: For program point L201-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,197 INFO L268 CegarLoopResult]: For program point L168-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,198 INFO L268 CegarLoopResult]: For program point L135-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,198 INFO L268 CegarLoopResult]: For program point L102-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,198 INFO L268 CegarLoopResult]: For program point L69-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,198 INFO L268 CegarLoopResult]: For program point L36-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,198 INFO L268 CegarLoopResult]: For program point L499(lines 499 572) no Hoare annotation was computed. [2020-07-21 22:58:27,198 INFO L268 CegarLoopResult]: For program point L301(lines 301 572) no Hoare annotation was computed. [2020-07-21 22:58:27,198 INFO L268 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2020-07-21 22:58:27,199 INFO L268 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2020-07-21 22:58:27,199 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-07-21 22:58:27,199 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-07-21 22:58:27,199 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-07-21 22:58:27,199 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-07-21 22:58:27,200 INFO L268 CegarLoopResult]: For program point L335(lines 335 572) no Hoare annotation was computed. [2020-07-21 22:58:27,200 INFO L268 CegarLoopResult]: For program point L236(lines 236 572) no Hoare annotation was computed. [2020-07-21 22:58:27,201 INFO L268 CegarLoopResult]: For program point L534(lines 534 572) no Hoare annotation was computed. [2020-07-21 22:58:27,201 INFO L268 CegarLoopResult]: For program point L171-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,203 INFO L268 CegarLoopResult]: For program point L138-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,203 INFO L268 CegarLoopResult]: For program point L105-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,203 INFO L268 CegarLoopResult]: For program point L72-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,203 INFO L268 CegarLoopResult]: For program point L39-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,203 INFO L268 CegarLoopResult]: For program point L436(lines 436 572) no Hoare annotation was computed. [2020-07-21 22:58:27,203 INFO L268 CegarLoopResult]: For program point L403(lines 403 572) no Hoare annotation was computed. [2020-07-21 22:58:27,203 INFO L268 CegarLoopResult]: For program point L370(lines 370 572) no Hoare annotation was computed. [2020-07-21 22:58:27,204 INFO L268 CegarLoopResult]: For program point L271(lines 271 572) no Hoare annotation was computed. [2020-07-21 22:58:27,204 INFO L268 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2020-07-21 22:58:27,204 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-07-21 22:58:27,204 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-07-21 22:58:27,204 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-07-21 22:58:27,204 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-07-21 22:58:27,204 INFO L268 CegarLoopResult]: For program point L569(lines 569 572) no Hoare annotation was computed. [2020-07-21 22:58:27,204 INFO L268 CegarLoopResult]: For program point L239(lines 239 572) no Hoare annotation was computed. [2020-07-21 22:58:27,205 INFO L268 CegarLoopResult]: For program point L504(lines 504 572) no Hoare annotation was computed. [2020-07-21 22:58:27,205 INFO L268 CegarLoopResult]: For program point L471(lines 471 572) no Hoare annotation was computed. [2020-07-21 22:58:27,205 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 85) no Hoare annotation was computed. [2020-07-21 22:58:27,205 INFO L268 CegarLoopResult]: For program point L306(lines 306 572) no Hoare annotation was computed. [2020-07-21 22:58:27,205 INFO L268 CegarLoopResult]: For program point L174-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,207 INFO L268 CegarLoopResult]: For program point L141-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,208 INFO L268 CegarLoopResult]: For program point L108-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,208 INFO L268 CegarLoopResult]: For program point L75-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,208 INFO L268 CegarLoopResult]: For program point L42-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,208 INFO L268 CegarLoopResult]: For program point L340(lines 340 572) no Hoare annotation was computed. [2020-07-21 22:58:27,208 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-21 22:58:27,209 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-07-21 22:58:27,209 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-07-21 22:58:27,209 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-07-21 22:58:27,209 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-07-21 22:58:27,209 INFO L268 CegarLoopResult]: For program point L540(lines 540 572) no Hoare annotation was computed. [2020-07-21 22:58:27,209 INFO L268 CegarLoopResult]: For program point L408(lines 408 572) no Hoare annotation was computed. [2020-07-21 22:58:27,209 INFO L268 CegarLoopResult]: For program point L375(lines 375 572) no Hoare annotation was computed. [2020-07-21 22:58:27,210 INFO L268 CegarLoopResult]: For program point L210(lines 210 572) no Hoare annotation was computed. [2020-07-21 22:58:27,210 INFO L268 CegarLoopResult]: For program point L177-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,210 INFO L268 CegarLoopResult]: For program point L144-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,210 INFO L268 CegarLoopResult]: For program point L111-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,212 INFO L268 CegarLoopResult]: For program point L78-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,212 INFO L268 CegarLoopResult]: For program point L45-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,212 INFO L268 CegarLoopResult]: For program point L442(lines 442 572) no Hoare annotation was computed. [2020-07-21 22:58:27,212 INFO L268 CegarLoopResult]: For program point L277(lines 277 572) no Hoare annotation was computed. [2020-07-21 22:58:27,212 INFO L268 CegarLoopResult]: For program point L244(lines 244 572) no Hoare annotation was computed. [2020-07-21 22:58:27,212 INFO L268 CegarLoopResult]: For program point L178(line 178) no Hoare annotation was computed. [2020-07-21 22:58:27,212 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-07-21 22:58:27,213 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-07-21 22:58:27,213 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-07-21 22:58:27,213 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-21 22:58:27,213 INFO L268 CegarLoopResult]: For program point L509(lines 509 572) no Hoare annotation was computed. [2020-07-21 22:58:27,213 INFO L268 CegarLoopResult]: For program point L476(lines 476 572) no Hoare annotation was computed. [2020-07-21 22:58:27,213 INFO L268 CegarLoopResult]: For program point L378(lines 378 572) no Hoare annotation was computed. [2020-07-21 22:58:27,213 INFO L268 CegarLoopResult]: For program point L345(lines 345 572) no Hoare annotation was computed. [2020-07-21 22:58:27,213 INFO L268 CegarLoopResult]: For program point L312(lines 312 572) no Hoare annotation was computed. [2020-07-21 22:58:27,214 INFO L268 CegarLoopResult]: For program point L180-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,214 INFO L268 CegarLoopResult]: For program point L147-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,214 INFO L268 CegarLoopResult]: For program point L114-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,214 INFO L268 CegarLoopResult]: For program point L81-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,214 INFO L268 CegarLoopResult]: For program point L48-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,214 INFO L268 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2020-07-21 22:58:27,214 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-07-21 22:58:27,214 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-21 22:58:27,214 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-07-21 22:58:27,215 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-07-21 22:58:27,215 INFO L268 CegarLoopResult]: For program point L545(lines 545 572) no Hoare annotation was computed. [2020-07-21 22:58:27,215 INFO L268 CegarLoopResult]: For program point L215(lines 215 572) no Hoare annotation was computed. [2020-07-21 22:58:27,215 INFO L268 CegarLoopResult]: For program point L414(lines 414 572) no Hoare annotation was computed. [2020-07-21 22:58:27,215 INFO L268 CegarLoopResult]: For program point L249(lines 249 572) no Hoare annotation was computed. [2020-07-21 22:58:27,215 INFO L268 CegarLoopResult]: For program point L183-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,215 INFO L268 CegarLoopResult]: For program point L150-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,215 INFO L268 CegarLoopResult]: For program point L117-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,216 INFO L268 CegarLoopResult]: For program point L84-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,216 INFO L268 CegarLoopResult]: For program point L51-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,216 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,216 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,216 INFO L268 CegarLoopResult]: For program point L514(lines 514 572) no Hoare annotation was computed. [2020-07-21 22:58:27,216 INFO L268 CegarLoopResult]: For program point L481(lines 481 572) no Hoare annotation was computed. [2020-07-21 22:58:27,216 INFO L268 CegarLoopResult]: For program point L448(lines 448 572) no Hoare annotation was computed. [2020-07-21 22:58:27,216 INFO L268 CegarLoopResult]: For program point L283(lines 283 572) no Hoare annotation was computed. [2020-07-21 22:58:27,216 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-07-21 22:58:27,217 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-07-21 22:58:27,217 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-07-21 22:58:27,217 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-07-21 22:58:27,217 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-07-21 22:58:27,217 INFO L268 CegarLoopResult]: For program point L548(lines 548 572) no Hoare annotation was computed. [2020-07-21 22:58:27,217 INFO L268 CegarLoopResult]: For program point L383(lines 383 572) no Hoare annotation was computed. [2020-07-21 22:58:27,218 INFO L268 CegarLoopResult]: For program point L317(lines 317 572) no Hoare annotation was computed. [2020-07-21 22:58:27,219 INFO L268 CegarLoopResult]: For program point L351(lines 351 572) no Hoare annotation was computed. [2020-07-21 22:58:27,219 INFO L268 CegarLoopResult]: For program point L186-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,219 INFO L268 CegarLoopResult]: For program point L153-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,219 INFO L268 CegarLoopResult]: For program point L120-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,219 INFO L268 CegarLoopResult]: For program point L87-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,219 INFO L268 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-07-21 22:58:27,220 INFO L268 CegarLoopResult]: For program point L54-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,220 INFO L268 CegarLoopResult]: For program point L21-2(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,220 INFO L268 CegarLoopResult]: For program point L517(lines 517 572) no Hoare annotation was computed. [2020-07-21 22:58:27,220 INFO L268 CegarLoopResult]: For program point L286(lines 286 572) no Hoare annotation was computed. [2020-07-21 22:58:27,220 INFO L268 CegarLoopResult]: For program point L220(lines 220 572) no Hoare annotation was computed. [2020-07-21 22:58:27,220 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-21 22:58:27,220 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-07-21 22:58:27,220 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-07-21 22:58:27,221 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-07-21 22:58:27,221 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-07-21 22:58:27,221 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-21 22:58:27,222 INFO L268 CegarLoopResult]: For program point L419(lines 419 572) no Hoare annotation was computed. [2020-07-21 22:58:27,222 INFO L268 CegarLoopResult]: For program point L320(lines 320 572) no Hoare annotation was computed. [2020-07-21 22:58:27,222 INFO L268 CegarLoopResult]: For program point L254(lines 254 572) no Hoare annotation was computed. [2020-07-21 22:58:27,222 INFO L268 CegarLoopResult]: For program point L354(lines 354 572) no Hoare annotation was computed. [2020-07-21 22:58:27,222 INFO L268 CegarLoopResult]: For program point L189-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,222 INFO L268 CegarLoopResult]: For program point L156-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,222 INFO L268 CegarLoopResult]: For program point L123-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,222 INFO L268 CegarLoopResult]: For program point L90-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,222 INFO L268 CegarLoopResult]: For program point L57-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,223 INFO L268 CegarLoopResult]: For program point L24-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,223 INFO L268 CegarLoopResult]: For program point L487(lines 487 572) no Hoare annotation was computed. [2020-07-21 22:58:27,223 INFO L268 CegarLoopResult]: For program point L454(lines 454 572) no Hoare annotation was computed. [2020-07-21 22:58:27,223 INFO L268 CegarLoopResult]: For program point L388(lines 388 572) no Hoare annotation was computed. [2020-07-21 22:58:27,223 INFO L268 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2020-07-21 22:58:27,223 INFO L268 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2020-07-21 22:58:27,223 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-07-21 22:58:27,223 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-07-21 22:58:27,223 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-07-21 22:58:27,223 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-21 22:58:27,224 INFO L268 CegarLoopResult]: For program point L554(lines 554 572) no Hoare annotation was computed. [2020-07-21 22:58:27,224 INFO L268 CegarLoopResult]: For program point L323(lines 323 572) no Hoare annotation was computed. [2020-07-21 22:58:27,224 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 20 574) the Hoare annotation is: (let ((.cse0 (not (< 7 |old(~a19~0)|))) (.cse7 (not (<= |old(~a10~0)| 2))) (.cse2 (<= ~a10~0 |old(~a10~0)|)) (.cse3 (<= 1 ~a10~0)) (.cse5 (< 7 ~a19~0)) (.cse4 (<= ~a19~0 |old(~a19~0)|)) (.cse6 (= ~a1~0 |old(~a1~0)|)) (.cse1 (not (<= 1 |old(~a10~0)|)))) (and (or .cse0 .cse1 (and .cse2 .cse3 .cse4 .cse5 .cse6) .cse7) (or .cse0 (not (<= |old(~a10~0)| 0)) (and .cse2 .cse4 .cse5 .cse6)) (or (not (<= |old(~a1~0)| 23)) (and .cse2 .cse4 .cse6) .cse7) (or (and .cse2 .cse3 (or .cse5 (< |old(~a19~0)| 8)) .cse4 .cse6) .cse1 (not (<= |old(~a19~0)| 9))))) [2020-07-21 22:58:27,224 INFO L268 CegarLoopResult]: For program point L357(lines 357 572) no Hoare annotation was computed. [2020-07-21 22:58:27,224 INFO L268 CegarLoopResult]: For program point L291(lines 291 572) no Hoare annotation was computed. [2020-07-21 22:58:27,224 INFO L268 CegarLoopResult]: For program point L225(lines 225 572) no Hoare annotation was computed. [2020-07-21 22:58:27,224 INFO L268 CegarLoopResult]: For program point L192-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,225 INFO L268 CegarLoopResult]: For program point L159-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,225 INFO L268 CegarLoopResult]: For program point L126-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,225 INFO L268 CegarLoopResult]: For program point L93-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,225 INFO L268 CegarLoopResult]: For program point L60-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,225 INFO L268 CegarLoopResult]: For program point L27-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,225 INFO L268 CegarLoopResult]: For program point L523(lines 523 572) no Hoare annotation was computed. [2020-07-21 22:58:27,225 INFO L268 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2020-07-21 22:58:27,225 INFO L268 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-07-21 22:58:27,226 INFO L268 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-07-21 22:58:27,226 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-07-21 22:58:27,226 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-07-21 22:58:27,226 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-07-21 22:58:27,226 INFO L268 CegarLoopResult]: For program point L557(lines 557 572) no Hoare annotation was computed. [2020-07-21 22:58:27,226 INFO L268 CegarLoopResult]: For program point L425(lines 425 572) no Hoare annotation was computed. [2020-07-21 22:58:27,226 INFO L268 CegarLoopResult]: For program point L326(lines 326 572) no Hoare annotation was computed. [2020-07-21 22:58:27,226 INFO L268 CegarLoopResult]: For program point L260(lines 260 572) no Hoare annotation was computed. [2020-07-21 22:58:27,226 INFO L268 CegarLoopResult]: For program point L393(lines 393 572) no Hoare annotation was computed. [2020-07-21 22:58:27,227 INFO L268 CegarLoopResult]: For program point L360(lines 360 572) no Hoare annotation was computed. [2020-07-21 22:58:27,227 INFO L268 CegarLoopResult]: For program point L195-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,227 INFO L268 CegarLoopResult]: For program point L162-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,227 INFO L268 CegarLoopResult]: For program point L129-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,227 INFO L268 CegarLoopResult]: For program point L96-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,227 INFO L268 CegarLoopResult]: For program point L63-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,227 INFO L268 CegarLoopResult]: For program point L30-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,227 INFO L268 CegarLoopResult]: For program point L526(lines 526 572) no Hoare annotation was computed. [2020-07-21 22:58:27,227 INFO L268 CegarLoopResult]: For program point L493(lines 493 572) no Hoare annotation was computed. [2020-07-21 22:58:27,228 INFO L268 CegarLoopResult]: For program point L460(lines 460 572) no Hoare annotation was computed. [2020-07-21 22:58:27,228 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-07-21 22:58:27,228 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-07-21 22:58:27,228 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-07-21 22:58:27,228 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-07-21 22:58:27,228 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-07-21 22:58:27,228 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-21 22:58:27,228 INFO L268 CegarLoopResult]: For program point L329(lines 329 572) no Hoare annotation was computed. [2020-07-21 22:58:27,229 INFO L268 CegarLoopResult]: For program point L296(lines 296 572) no Hoare annotation was computed. [2020-07-21 22:58:27,229 INFO L268 CegarLoopResult]: For program point L231(lines 231 572) no Hoare annotation was computed. [2020-07-21 22:58:27,229 INFO L268 CegarLoopResult]: For program point L198-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,229 INFO L268 CegarLoopResult]: For program point L165-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,229 INFO L268 CegarLoopResult]: For program point L132-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,229 INFO L268 CegarLoopResult]: For program point L99-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,229 INFO L268 CegarLoopResult]: For program point L66-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,229 INFO L268 CegarLoopResult]: For program point L33-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:58:27,229 INFO L268 CegarLoopResult]: For program point L529(lines 529 572) no Hoare annotation was computed. [2020-07-21 22:58:27,230 INFO L268 CegarLoopResult]: For program point L430(lines 430 572) no Hoare annotation was computed. [2020-07-21 22:58:27,230 INFO L268 CegarLoopResult]: For program point L265(lines 265 572) no Hoare annotation was computed. [2020-07-21 22:58:27,230 INFO L268 CegarLoopResult]: For program point L199(line 199) no Hoare annotation was computed. [2020-07-21 22:58:27,230 INFO L268 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2020-07-21 22:58:27,230 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-07-21 22:58:27,230 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-07-21 22:58:27,230 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-07-21 22:58:27,230 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-21 22:58:27,231 INFO L268 CegarLoopResult]: For program point L563(lines 563 572) no Hoare annotation was computed. [2020-07-21 22:58:27,231 INFO L268 CegarLoopResult]: For program point L398(lines 398 572) no Hoare annotation was computed. [2020-07-21 22:58:27,231 INFO L268 CegarLoopResult]: For program point L365(lines 365 572) no Hoare annotation was computed. [2020-07-21 22:58:27,231 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 22:58:27,231 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a10~0 0) (<= ~a19~0 9) (< 7 ~a19~0) (= 23 ~a1~0)) [2020-07-21 22:58:27,231 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 22:58:27,231 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 22:58:27,232 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 576 592) the Hoare annotation is: (or (not (< 7 |old(~a19~0)|)) (not (= 23 |old(~a1~0)|)) (not (<= |old(~a10~0)| 0)) (not (<= |old(~a19~0)| 9)) (and (<= ~a10~0 |old(~a10~0)|) (<= ~a19~0 |old(~a19~0)|) (< 7 ~a19~0) (= ~a1~0 |old(~a1~0)|))) [2020-07-21 22:58:27,232 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 576 592) no Hoare annotation was computed. [2020-07-21 22:58:27,232 INFO L264 CegarLoopResult]: At program point L590(line 590) the Hoare annotation is: (or (not (<= |old(~a10~0)| 0)) (not (< 7 |old(~a19~0)|)) (not (= 23 |old(~a1~0)|)) (and (<= ~a10~0 2) (< 7 ~a19~0)) (not (<= |old(~a19~0)| 9)) (and (<= ~a19~0 9) (<= 1 ~a10~0)) (and (<= ~a1~0 23) (<= ~a19~0 |old(~a19~0)|))) [2020-07-21 22:58:27,232 INFO L268 CegarLoopResult]: For program point L590-1(line 590) no Hoare annotation was computed. [2020-07-21 22:58:27,232 INFO L268 CegarLoopResult]: For program point L587(line 587) no Hoare annotation was computed. [2020-07-21 22:58:27,232 INFO L264 CegarLoopResult]: At program point L582-2(lines 582 591) the Hoare annotation is: (or (not (<= |old(~a10~0)| 0)) (not (< 7 |old(~a19~0)|)) (not (= 23 |old(~a1~0)|)) (and (<= ~a10~0 2) (< 7 ~a19~0)) (not (<= |old(~a19~0)| 9)) (and (<= ~a19~0 9) (<= 1 ~a10~0)) (and (<= ~a1~0 23) (<= ~a19~0 |old(~a19~0)|))) [2020-07-21 22:58:27,232 INFO L268 CegarLoopResult]: For program point L582-3(lines 576 592) no Hoare annotation was computed. [2020-07-21 22:58:27,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:58:27 BoogieIcfgContainer [2020-07-21 22:58:27,258 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 22:58:27,261 INFO L168 Benchmark]: Toolchain (without parser) took 18304.91 ms. Allocated memory was 145.8 MB in the beginning and 379.1 MB in the end (delta: 233.3 MB). Free memory was 102.4 MB in the beginning and 253.0 MB in the end (delta: -150.6 MB). Peak memory consumption was 250.0 MB. Max. memory is 7.1 GB. [2020-07-21 22:58:27,265 INFO L168 Benchmark]: CDTParser took 0.54 ms. Allocated memory is still 145.8 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-21 22:58:27,268 INFO L168 Benchmark]: CACSL2BoogieTranslator took 767.49 ms. Allocated memory was 145.8 MB in the beginning and 204.5 MB in the end (delta: 58.7 MB). Free memory was 102.0 MB in the beginning and 171.0 MB in the end (delta: -69.0 MB). Peak memory consumption was 32.6 MB. Max. memory is 7.1 GB. [2020-07-21 22:58:27,269 INFO L168 Benchmark]: Boogie Preprocessor took 106.83 ms. Allocated memory is still 204.5 MB. Free memory was 171.0 MB in the beginning and 166.2 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2020-07-21 22:58:27,270 INFO L168 Benchmark]: RCFGBuilder took 1398.10 ms. Allocated memory was 204.5 MB in the beginning and 238.0 MB in the end (delta: 33.6 MB). Free memory was 166.2 MB in the beginning and 180.8 MB in the end (delta: -14.6 MB). Peak memory consumption was 81.7 MB. Max. memory is 7.1 GB. [2020-07-21 22:58:27,272 INFO L168 Benchmark]: TraceAbstraction took 16025.83 ms. Allocated memory was 238.0 MB in the beginning and 379.1 MB in the end (delta: 141.0 MB). Free memory was 180.8 MB in the beginning and 253.0 MB in the end (delta: -72.2 MB). Peak memory consumption was 236.0 MB. Max. memory is 7.1 GB. [2020-07-21 22:58:27,283 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54 ms. Allocated memory is still 145.8 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 767.49 ms. Allocated memory was 145.8 MB in the beginning and 204.5 MB in the end (delta: 58.7 MB). Free memory was 102.0 MB in the beginning and 171.0 MB in the end (delta: -69.0 MB). Peak memory consumption was 32.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.83 ms. Allocated memory is still 204.5 MB. Free memory was 171.0 MB in the beginning and 166.2 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1398.10 ms. Allocated memory was 204.5 MB in the beginning and 238.0 MB in the end (delta: 33.6 MB). Free memory was 166.2 MB in the beginning and 180.8 MB in the end (delta: -14.6 MB). Peak memory consumption was 81.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16025.83 ms. Allocated memory was 238.0 MB in the beginning and 379.1 MB in the end (delta: 141.0 MB). Free memory was 180.8 MB in the beginning and 253.0 MB in the end (delta: -72.2 MB). Peak memory consumption was 236.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 85]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 582]: Loop Invariant Derived loop invariant: (((((!(\old(a10) <= 0) || !(7 < \old(a19))) || !(23 == \old(a1))) || (a10 <= 2 && 7 < a19)) || !(\old(a19) <= 9)) || (a19 <= 9 && 1 <= a10)) || (a1 <= 23 && a19 <= \old(a19)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 15.0s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 8.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 360 SDtfs, 2275 SDslu, 225 SDs, 0 SdLazy, 5148 SolverSat, 873 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1457 GetRequests, 1416 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2815occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 82 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 71 PreInvPairs, 119 NumberOfFragments, 237 HoareAnnotationTreeSize, 71 FomulaSimplifications, 2090 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 7 FomulaSimplificationsInter, 1297 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 1062 NumberOfCodeBlocks, 1036 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 1412 ConstructedInterpolants, 0 QuantifiedInterpolants, 719936 SizeOfPredicates, 15 NumberOfNonLiveVariables, 2142 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 545/618 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...