/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_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 22:58:18,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 22:58:18,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 22:58:18,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 22:58:18,845 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 22:58:18,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 22:58:18,849 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 22:58:18,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 22:58:18,863 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 22:58:18,865 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 22:58:18,866 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 22:58:18,867 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 22:58:18,867 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 22:58:18,870 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 22:58:18,872 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 22:58:18,873 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 22:58:18,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 22:58:18,876 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 22:58:18,877 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 22:58:18,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 22:58:18,886 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 22:58:18,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 22:58:18,891 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 22:58:18,891 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 22:58:18,894 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 22:58:18,904 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 22:58:18,904 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 22:58:18,906 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 22:58:18,907 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 22:58:18,939 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 22:58:18,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 22:58:18,944 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 22:58:18,945 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 22:58:18,945 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 22:58:18,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 22:58:18,945 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 22:58:18,946 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 22:58:18,946 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 22:58:18,946 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 22:58:18,946 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 22:58:18,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 22:58:18,946 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 22:58:18,947 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 22:58:18,947 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 22:58:18,947 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 22:58:18,948 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 22:58:18,948 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 22:58:18,949 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 22:58:18,949 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 22:58:18,949 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 22:58:18,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 22:58:18,949 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 22:58:18,949 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 22:58:18,950 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 22:58:18,950 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 22:58:18,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:58:18,950 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 22:58:18,950 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 22:58:18,951 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 22:58:19,232 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 22:58:19,247 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 22:58:19,251 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 22:58:19,252 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 22:58:19,253 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 22:58:19,253 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label31.c [2020-07-21 22:58:19,328 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81e9762f2/70d50b31f5cd4db28a9d690f37b83dfa/FLAG790e04dfc [2020-07-21 22:58:19,869 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 22:58:19,869 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label31.c [2020-07-21 22:58:19,880 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81e9762f2/70d50b31f5cd4db28a9d690f37b83dfa/FLAG790e04dfc [2020-07-21 22:58:20,160 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81e9762f2/70d50b31f5cd4db28a9d690f37b83dfa [2020-07-21 22:58:20,168 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 22:58:20,171 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 22:58:20,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 22:58:20,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 22:58:20,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 22:58:20,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:58:20" (1/1) ... [2020-07-21 22:58:20,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d5f847e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:20, skipping insertion in model container [2020-07-21 22:58:20,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:58:20" (1/1) ... [2020-07-21 22:58:20,188 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 22:58:20,240 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 22:58:20,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:58:20,780 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 22:58:20,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:58:20,902 INFO L208 MainTranslator]: Completed translation [2020-07-21 22:58:20,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:20 WrapperNode [2020-07-21 22:58:20,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 22:58:20,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 22:58:20,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 22:58:20,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 22:58:20,914 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:20" (1/1) ... [2020-07-21 22:58:20,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:20" (1/1) ... [2020-07-21 22:58:20,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:20" (1/1) ... [2020-07-21 22:58:20,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:20" (1/1) ... [2020-07-21 22:58:20,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:20" (1/1) ... [2020-07-21 22:58:20,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:20" (1/1) ... [2020-07-21 22:58:20,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:20" (1/1) ... [2020-07-21 22:58:20,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 22:58:20,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 22:58:20,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 22:58:20,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 22:58:21,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:20" (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 22:58:21,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 22:58:21,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 22:58:21,088 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 22:58:21,088 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 22:58:21,088 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 22:58:21,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 22:58:21,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 22:58:21,089 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 22:58:21,089 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 22:58:21,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 22:58:21,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 22:58:22,346 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 22:58:22,347 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 22:58:22,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:58:22 BoogieIcfgContainer [2020-07-21 22:58:22,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 22:58:22,361 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 22:58:22,361 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 22:58:22,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 22:58:22,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:58:20" (1/3) ... [2020-07-21 22:58:22,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2893466b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:58:22, skipping insertion in model container [2020-07-21 22:58:22,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:20" (2/3) ... [2020-07-21 22:58:22,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2893466b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:58:22, skipping insertion in model container [2020-07-21 22:58:22,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:58:22" (3/3) ... [2020-07-21 22:58:22,372 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label31.c [2020-07-21 22:58:22,384 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 22:58:22,395 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 22:58:22,410 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 22:58:22,444 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 22:58:22,445 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 22:58:22,445 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 22:58:22,445 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 22:58:22,446 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 22:58:22,446 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 22:58:22,446 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 22:58:22,446 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 22:58:22,473 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-07-21 22:58:22,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-07-21 22:58:22,486 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:58:22,487 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:58:22,488 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:58:22,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:58:22,495 INFO L82 PathProgramCache]: Analyzing trace with hash -721063394, now seen corresponding path program 1 times [2020-07-21 22:58:22,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:58:22,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492492596] [2020-07-21 22:58:22,505 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 22:58:22,616 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:58:22,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:58:22,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 22:58:22,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:58:22,692 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 22:58:22,692 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:58:22,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492492596] [2020-07-21 22:58:22,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:58:22,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 22:58:22,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616863410] [2020-07-21 22:58:22,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 22:58:22,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:58:22,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 22:58:22,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:58:22,719 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2020-07-21 22:58:23,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:58:23,782 INFO L93 Difference]: Finished difference Result 571 states and 989 transitions. [2020-07-21 22:58:23,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 22:58:23,784 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2020-07-21 22:58:23,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:58:23,813 INFO L225 Difference]: With dead ends: 571 [2020-07-21 22:58:23,814 INFO L226 Difference]: Without dead ends: 294 [2020-07-21 22:58:23,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 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 22:58:23,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-07-21 22:58:23,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2020-07-21 22:58:23,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-07-21 22:58:23,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 391 transitions. [2020-07-21 22:58:23,935 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 391 transitions. Word has length 49 [2020-07-21 22:58:23,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:58:23,936 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 391 transitions. [2020-07-21 22:58:23,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 22:58:23,936 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 391 transitions. [2020-07-21 22:58:23,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-07-21 22:58:23,949 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:58:23,950 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:58:24,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:58:24,156 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:58:24,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:58:24,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1937216922, now seen corresponding path program 1 times [2020-07-21 22:58:24,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:58:24,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494246115] [2020-07-21 22:58:24,157 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 22:58:24,254 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:58:24,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:58:24,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 22:58:24,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:58:24,339 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-21 22:58:24,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:58:24,473 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-21 22:58:24,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494246115] [2020-07-21 22:58:24,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-21 22:58:24,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2020-07-21 22:58:24,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578759964] [2020-07-21 22:58:24,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 22:58:24,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:58:24,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 22:58:24,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 22:58:24,477 INFO L87 Difference]: Start difference. First operand 294 states and 391 transitions. Second operand 4 states. [2020-07-21 22:58:25,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:58:25,234 INFO L93 Difference]: Finished difference Result 586 states and 786 transitions. [2020-07-21 22:58:25,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 22:58:25,236 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2020-07-21 22:58:25,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:58:25,241 INFO L225 Difference]: With dead ends: 586 [2020-07-21 22:58:25,241 INFO L226 Difference]: Without dead ends: 584 [2020-07-21 22:58:25,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 233 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 22:58:25,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2020-07-21 22:58:25,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 584. [2020-07-21 22:58:25,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 584 states. [2020-07-21 22:58:25,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 784 transitions. [2020-07-21 22:58:25,270 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 784 transitions. Word has length 119 [2020-07-21 22:58:25,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:58:25,271 INFO L479 AbstractCegarLoop]: Abstraction has 584 states and 784 transitions. [2020-07-21 22:58:25,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 22:58:25,272 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 784 transitions. [2020-07-21 22:58:25,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-07-21 22:58:25,274 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:58:25,274 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:58:25,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:58:25,489 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:58:25,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:58:25,489 INFO L82 PathProgramCache]: Analyzing trace with hash 179342018, now seen corresponding path program 1 times [2020-07-21 22:58:25,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:58:25,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1564597296] [2020-07-21 22:58:25,505 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 22:58:25,599 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:58:25,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:58:25,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 22:58:25,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:58:25,689 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:58:25,690 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:58:25,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1564597296] [2020-07-21 22:58:25,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:58:25,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 22:58:25,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565587047] [2020-07-21 22:58:25,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 22:58:25,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:58:25,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 22:58:25,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 22:58:25,704 INFO L87 Difference]: Start difference. First operand 584 states and 784 transitions. Second operand 5 states. [2020-07-21 22:58:26,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:58:26,695 INFO L93 Difference]: Finished difference Result 1472 states and 2014 transitions. [2020-07-21 22:58:26,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 22:58:26,698 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-07-21 22:58:26,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:58:26,704 INFO L225 Difference]: With dead ends: 1472 [2020-07-21 22:58:26,705 INFO L226 Difference]: Without dead ends: 894 [2020-07-21 22:58:26,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 167 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 22:58:26,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2020-07-21 22:58:26,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 880. [2020-07-21 22:58:26,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2020-07-21 22:58:26,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1114 transitions. [2020-07-21 22:58:26,773 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1114 transitions. Word has length 171 [2020-07-21 22:58:26,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:58:26,774 INFO L479 AbstractCegarLoop]: Abstraction has 880 states and 1114 transitions. [2020-07-21 22:58:26,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 22:58:26,774 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1114 transitions. [2020-07-21 22:58:26,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-07-21 22:58:26,777 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:58:26,777 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2020-07-21 22:58:26,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:58:26,988 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:58:26,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:58:26,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1903843694, now seen corresponding path program 1 times [2020-07-21 22:58:26,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:58:26,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105650514] [2020-07-21 22:58:26,990 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 22:58:27,121 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:58:27,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:58:27,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:58:27,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:58:27,209 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:58:27,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:58:27,336 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:58:27,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105650514] [2020-07-21 22:58:27,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:58:27,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:58:27,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658787260] [2020-07-21 22:58:27,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:58:27,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:58:27,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:58:27,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:58:27,339 INFO L87 Difference]: Start difference. First operand 880 states and 1114 transitions. Second operand 7 states. [2020-07-21 22:58:28,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:58:28,649 INFO L93 Difference]: Finished difference Result 2352 states and 3091 transitions. [2020-07-21 22:58:28,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 22:58:28,650 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 201 [2020-07-21 22:58:28,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:58:28,658 INFO L225 Difference]: With dead ends: 2352 [2020-07-21 22:58:28,658 INFO L226 Difference]: Without dead ends: 1478 [2020-07-21 22:58:28,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 397 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-07-21 22:58:28,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2020-07-21 22:58:28,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1474. [2020-07-21 22:58:28,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2020-07-21 22:58:28,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 1881 transitions. [2020-07-21 22:58:28,709 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 1881 transitions. Word has length 201 [2020-07-21 22:58:28,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:58:28,710 INFO L479 AbstractCegarLoop]: Abstraction has 1474 states and 1881 transitions. [2020-07-21 22:58:28,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:58:28,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 1881 transitions. [2020-07-21 22:58:28,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-07-21 22:58:28,715 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:58:28,715 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 22:58:28,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:58:28,929 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:58:28,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:58:28,930 INFO L82 PathProgramCache]: Analyzing trace with hash 877092530, now seen corresponding path program 1 times [2020-07-21 22:58:28,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:58:28,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398193345] [2020-07-21 22:58:28,931 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 22:58:29,023 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:58:29,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:58:29,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 22:58:29,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:58:29,117 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-07-21 22:58:29,118 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:58:29,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398193345] [2020-07-21 22:58:29,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:58:29,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 22:58:29,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153762421] [2020-07-21 22:58:29,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 22:58:29,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:58:29,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 22:58:29,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 22:58:29,122 INFO L87 Difference]: Start difference. First operand 1474 states and 1881 transitions. Second operand 5 states. [2020-07-21 22:58:30,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:58:30,100 INFO L93 Difference]: Finished difference Result 3119 states and 3989 transitions. [2020-07-21 22:58:30,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 22:58:30,102 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 245 [2020-07-21 22:58:30,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:58:30,111 INFO L225 Difference]: With dead ends: 3119 [2020-07-21 22:58:30,111 INFO L226 Difference]: Without dead ends: 1651 [2020-07-21 22:58:30,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 241 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 22:58:30,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1651 states. [2020-07-21 22:58:30,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1651 to 1341. [2020-07-21 22:58:30,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1341 states. [2020-07-21 22:58:30,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 1714 transitions. [2020-07-21 22:58:30,166 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 1714 transitions. Word has length 245 [2020-07-21 22:58:30,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:58:30,167 INFO L479 AbstractCegarLoop]: Abstraction has 1341 states and 1714 transitions. [2020-07-21 22:58:30,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 22:58:30,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 1714 transitions. [2020-07-21 22:58:30,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-07-21 22:58:30,174 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:58:30,174 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:58:30,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:58:30,388 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:58:30,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:58:30,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1929001938, now seen corresponding path program 1 times [2020-07-21 22:58:30,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:58:30,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4646981] [2020-07-21 22:58:30,389 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 22:58:30,496 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:58:30,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:58:30,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:58:30,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:58:30,522 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-21 22:58:30,523 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:58:30,622 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 298 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-07-21 22:58:30,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:58:30,705 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:58:30,706 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:58:30,709 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 1] term [2020-07-21 22:58:30,709 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:58:30,942 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 198 proven. 77 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-07-21 22:58:30,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4646981] [2020-07-21 22:58:30,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:58:30,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 22:58:30,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479208196] [2020-07-21 22:58:30,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 22:58:30,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:58:30,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 22:58:30,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 22:58:30,945 INFO L87 Difference]: Start difference. First operand 1341 states and 1714 transitions. Second operand 6 states. [2020-07-21 22:58:32,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:58:32,023 INFO L93 Difference]: Finished difference Result 2716 states and 3587 transitions. [2020-07-21 22:58:32,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 22:58:32,024 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 315 [2020-07-21 22:58:32,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:58:32,033 INFO L225 Difference]: With dead ends: 2716 [2020-07-21 22:58:32,034 INFO L226 Difference]: Without dead ends: 1524 [2020-07-21 22:58:32,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 626 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-21 22:58:32,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2020-07-21 22:58:32,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1500. [2020-07-21 22:58:32,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1500 states. [2020-07-21 22:58:32,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 1791 transitions. [2020-07-21 22:58:32,098 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 1791 transitions. Word has length 315 [2020-07-21 22:58:32,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:58:32,100 INFO L479 AbstractCegarLoop]: Abstraction has 1500 states and 1791 transitions. [2020-07-21 22:58:32,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 22:58:32,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 1791 transitions. [2020-07-21 22:58:32,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-07-21 22:58:32,107 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:58:32,107 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:58:32,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:58:32,317 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:58:32,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:58:32,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1900234379, now seen corresponding path program 1 times [2020-07-21 22:58:32,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:58:32,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260843062] [2020-07-21 22:58:32,319 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 22:58:32,441 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:58:32,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:58:32,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:58:32,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:58:32,563 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-07-21 22:58:32,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:58:32,694 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 205 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-07-21 22:58:32,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260843062] [2020-07-21 22:58:32,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:58:32,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:58:32,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765618345] [2020-07-21 22:58:32,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:58:32,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:58:32,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:58:32,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:58:32,696 INFO L87 Difference]: Start difference. First operand 1500 states and 1791 transitions. Second operand 7 states. [2020-07-21 22:58:34,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:58:34,216 INFO L93 Difference]: Finished difference Result 4156 states and 5003 transitions. [2020-07-21 22:58:34,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 22:58:34,224 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 324 [2020-07-21 22:58:34,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:58:34,235 INFO L225 Difference]: With dead ends: 4156 [2020-07-21 22:58:34,235 INFO L226 Difference]: Without dead ends: 2207 [2020-07-21 22:58:34,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 643 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-07-21 22:58:34,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2020-07-21 22:58:34,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 1345. [2020-07-21 22:58:34,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1345 states. [2020-07-21 22:58:34,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 1533 transitions. [2020-07-21 22:58:34,285 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 1533 transitions. Word has length 324 [2020-07-21 22:58:34,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:58:34,286 INFO L479 AbstractCegarLoop]: Abstraction has 1345 states and 1533 transitions. [2020-07-21 22:58:34,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:58:34,286 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 1533 transitions. [2020-07-21 22:58:34,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-07-21 22:58:34,294 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:58:34,294 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:58:34,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:58:34,508 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:58:34,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:58:34,508 INFO L82 PathProgramCache]: Analyzing trace with hash -2046581507, now seen corresponding path program 1 times [2020-07-21 22:58:34,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:58:34,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933146469] [2020-07-21 22:58:34,509 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 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 22:58:34,645 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:58:34,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:58:34,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-21 22:58:34,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:58:34,677 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:58:34,679 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 22:58:34,680 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 22:58:34,681 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 22:58:34,684 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 22:58:34,685 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 22:58:34,686 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 22:58:34,688 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 22:58:34,690 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 22:58:34,693 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 22:58:34,694 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 22:58:34,695 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 22:58:34,696 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 22:58:34,698 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 22:58:34,699 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 22:58:34,700 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 22:58:34,701 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 22:58:34,703 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 22:58:34,705 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 22:58:34,706 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 22:58:34,708 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 22:58:34,710 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 22:58:34,710 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 22:58:34,711 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 22:58:34,713 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 22:58:34,715 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 22:58:47,206 WARN L193 SmtUtils]: Spent 12.42 s on a formula simplification. DAG size of input: 64 DAG size of output: 31 [2020-07-21 22:58:47,231 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 22:58:47,324 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-21 22:58:47,325 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:58:47,326 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:58:47,359 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:58:47,570 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 350 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-07-21 22:58:47,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:58:47,675 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:58:47,676 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:58:47,677 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:58:47,678 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:58:47,698 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:58:47,700 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:58:47,795 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:58:47,797 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:58:47,798 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:58:47,798 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:58:47,799 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:58:47,800 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:58:47,800 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 22:58:47,802 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:58:47,803 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:58:47,804 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:58:47,805 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:58:47,805 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:58:47,807 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:58:47,807 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:58:47,809 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:58:47,810 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 22:58:47,810 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 22:58:47,812 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 22:58:47,813 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 22:58:47,814 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:58:47,815 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:58:47,815 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 22:58:47,816 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 22:58:47,817 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:58:47,818 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 22:58:47,820 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:58:47,820 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 22:58:47,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933146469] [2020-07-21 22:58:47,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 22:58:47,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-07-21 22:58:47,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259164089] [2020-07-21 22:58:47,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 22:58:47,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:58:47,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 22:58:47,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-07-21 22:58:47,991 INFO L87 Difference]: Start difference. First operand 1345 states and 1533 transitions. Second operand 8 states. [2020-07-21 22:59:02,865 WARN L193 SmtUtils]: Spent 12.40 s on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-07-21 22:59:03,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:59:03,757 INFO L93 Difference]: Finished difference Result 3874 states and 4644 transitions. [2020-07-21 22:59:03,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-21 22:59:03,762 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 360 [2020-07-21 22:59:03,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:59:03,773 INFO L225 Difference]: With dead ends: 3874 [2020-07-21 22:59:03,774 INFO L226 Difference]: Without dead ends: 2678 [2020-07-21 22:59:03,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 589 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 25.4s TimeCoverageRelationStatistics Valid=136, Invalid=284, Unknown=0, NotChecked=0, Total=420 [2020-07-21 22:59:03,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2678 states. [2020-07-21 22:59:03,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2678 to 2664. [2020-07-21 22:59:03,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2664 states. [2020-07-21 22:59:03,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2664 states to 2664 states and 3121 transitions. [2020-07-21 22:59:03,846 INFO L78 Accepts]: Start accepts. Automaton has 2664 states and 3121 transitions. Word has length 360 [2020-07-21 22:59:03,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:59:03,846 INFO L479 AbstractCegarLoop]: Abstraction has 2664 states and 3121 transitions. [2020-07-21 22:59:03,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 22:59:03,847 INFO L276 IsEmpty]: Start isEmpty. Operand 2664 states and 3121 transitions. [2020-07-21 22:59:03,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2020-07-21 22:59:03,856 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:59:03,856 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:59:04,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:59:04,070 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:59:04,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:59:04,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1382710183, now seen corresponding path program 1 times [2020-07-21 22:59:04,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:59:04,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066605924] [2020-07-21 22:59:04,072 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:59:04,292 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:59:04,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:59:04,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:59:04,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:59:04,422 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2020-07-21 22:59:04,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:59:04,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066605924] [2020-07-21 22:59:04,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:59:04,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 22:59:04,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022403050] [2020-07-21 22:59:04,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 22:59:04,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:59:04,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 22:59:04,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:59:04,426 INFO L87 Difference]: Start difference. First operand 2664 states and 3121 transitions. Second operand 3 states. [2020-07-21 22:59:05,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:59:05,025 INFO L93 Difference]: Finished difference Result 5322 states and 6231 transitions. [2020-07-21 22:59:05,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 22:59:05,026 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 374 [2020-07-21 22:59:05,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:59:05,037 INFO L225 Difference]: With dead ends: 5322 [2020-07-21 22:59:05,037 INFO L226 Difference]: Without dead ends: 2662 [2020-07-21 22:59:05,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 372 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 22:59:05,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2662 states. [2020-07-21 22:59:05,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2662 to 2519. [2020-07-21 22:59:05,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2519 states. [2020-07-21 22:59:05,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2519 states to 2519 states and 2915 transitions. [2020-07-21 22:59:05,099 INFO L78 Accepts]: Start accepts. Automaton has 2519 states and 2915 transitions. Word has length 374 [2020-07-21 22:59:05,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:59:05,100 INFO L479 AbstractCegarLoop]: Abstraction has 2519 states and 2915 transitions. [2020-07-21 22:59:05,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 22:59:05,100 INFO L276 IsEmpty]: Start isEmpty. Operand 2519 states and 2915 transitions. [2020-07-21 22:59:05,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2020-07-21 22:59:05,110 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:59:05,110 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 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 22:59:05,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:59:05,326 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:59:05,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:59:05,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1603927890, now seen corresponding path program 1 times [2020-07-21 22:59:05,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:59:05,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1113625152] [2020-07-21 22:59:05,328 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:59:05,535 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:59:05,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:59:05,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:59:05,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:59:05,633 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2020-07-21 22:59:05,633 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:59:05,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1113625152] [2020-07-21 22:59:05,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:59:05,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 22:59:05,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934786143] [2020-07-21 22:59:05,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 22:59:05,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:59:05,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 22:59:05,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:59:05,635 INFO L87 Difference]: Start difference. First operand 2519 states and 2915 transitions. Second operand 3 states. [2020-07-21 22:59:06,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:59:06,194 INFO L93 Difference]: Finished difference Result 2519 states and 2915 transitions. [2020-07-21 22:59:06,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 22:59:06,195 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 379 [2020-07-21 22:59:06,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:59:06,196 INFO L225 Difference]: With dead ends: 2519 [2020-07-21 22:59:06,196 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 22:59:06,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 377 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 22:59:06,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 22:59:06,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 22:59:06,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 22:59:06,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 22:59:06,201 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 379 [2020-07-21 22:59:06,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:59:06,202 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 22:59:06,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 22:59:06,202 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 22:59:06,202 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 22:59:06,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:59:06,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 22:59:07,674 WARN L193 SmtUtils]: Spent 749.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 40 [2020-07-21 22:59:08,095 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 40 [2020-07-21 22:59:08,480 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 40 [2020-07-21 22:59:08,484 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 22:59:08,485 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)) (<= |old(~a10~0)| ~a10~0) (<= ~a19~0 |old(~a19~0)|) (= ~a1~0 |old(~a1~0)|)) [2020-07-21 22:59:08,485 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 22:59:08,485 INFO L268 CegarLoopResult]: For program point L465(lines 465 572) no Hoare annotation was computed. [2020-07-21 22:59:08,486 INFO L268 CegarLoopResult]: For program point L201-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,486 INFO L268 CegarLoopResult]: For program point L168-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,486 INFO L268 CegarLoopResult]: For program point L135-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,486 INFO L268 CegarLoopResult]: For program point L102-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,486 INFO L268 CegarLoopResult]: For program point L69-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,487 INFO L268 CegarLoopResult]: For program point L36-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,487 INFO L268 CegarLoopResult]: For program point L499(lines 499 572) no Hoare annotation was computed. [2020-07-21 22:59:08,487 INFO L268 CegarLoopResult]: For program point L301(lines 301 572) no Hoare annotation was computed. [2020-07-21 22:59:08,487 INFO L268 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2020-07-21 22:59:08,487 INFO L268 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2020-07-21 22:59:08,487 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-07-21 22:59:08,488 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-07-21 22:59:08,488 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-07-21 22:59:08,488 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-07-21 22:59:08,488 INFO L268 CegarLoopResult]: For program point L335(lines 335 572) no Hoare annotation was computed. [2020-07-21 22:59:08,488 INFO L268 CegarLoopResult]: For program point L236(lines 236 572) no Hoare annotation was computed. [2020-07-21 22:59:08,488 INFO L268 CegarLoopResult]: For program point L534(lines 534 572) no Hoare annotation was computed. [2020-07-21 22:59:08,488 INFO L268 CegarLoopResult]: For program point L171-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,488 INFO L268 CegarLoopResult]: For program point L138-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,488 INFO L268 CegarLoopResult]: For program point L105-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,488 INFO L268 CegarLoopResult]: For program point L72-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,489 INFO L268 CegarLoopResult]: For program point L39-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,489 INFO L268 CegarLoopResult]: For program point L436(lines 436 572) no Hoare annotation was computed. [2020-07-21 22:59:08,489 INFO L268 CegarLoopResult]: For program point L403(lines 403 572) no Hoare annotation was computed. [2020-07-21 22:59:08,489 INFO L268 CegarLoopResult]: For program point L370(lines 370 572) no Hoare annotation was computed. [2020-07-21 22:59:08,489 INFO L268 CegarLoopResult]: For program point L271(lines 271 572) no Hoare annotation was computed. [2020-07-21 22:59:08,489 INFO L268 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2020-07-21 22:59:08,489 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-07-21 22:59:08,489 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-07-21 22:59:08,489 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-07-21 22:59:08,489 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-07-21 22:59:08,489 INFO L268 CegarLoopResult]: For program point L569(lines 569 572) no Hoare annotation was computed. [2020-07-21 22:59:08,490 INFO L268 CegarLoopResult]: For program point L239(lines 239 572) no Hoare annotation was computed. [2020-07-21 22:59:08,490 INFO L268 CegarLoopResult]: For program point L504(lines 504 572) no Hoare annotation was computed. [2020-07-21 22:59:08,490 INFO L268 CegarLoopResult]: For program point L471(lines 471 572) no Hoare annotation was computed. [2020-07-21 22:59:08,490 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 133) no Hoare annotation was computed. [2020-07-21 22:59:08,490 INFO L268 CegarLoopResult]: For program point L306(lines 306 572) no Hoare annotation was computed. [2020-07-21 22:59:08,490 INFO L268 CegarLoopResult]: For program point L174-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,490 INFO L268 CegarLoopResult]: For program point L141-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,490 INFO L268 CegarLoopResult]: For program point L108-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,490 INFO L268 CegarLoopResult]: For program point L75-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,491 INFO L268 CegarLoopResult]: For program point L42-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,491 INFO L268 CegarLoopResult]: For program point L340(lines 340 572) no Hoare annotation was computed. [2020-07-21 22:59:08,491 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-21 22:59:08,491 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-07-21 22:59:08,491 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-07-21 22:59:08,491 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-07-21 22:59:08,491 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-07-21 22:59:08,492 INFO L268 CegarLoopResult]: For program point L540(lines 540 572) no Hoare annotation was computed. [2020-07-21 22:59:08,492 INFO L268 CegarLoopResult]: For program point L408(lines 408 572) no Hoare annotation was computed. [2020-07-21 22:59:08,492 INFO L268 CegarLoopResult]: For program point L375(lines 375 572) no Hoare annotation was computed. [2020-07-21 22:59:08,492 INFO L268 CegarLoopResult]: For program point L210(lines 210 572) no Hoare annotation was computed. [2020-07-21 22:59:08,492 INFO L268 CegarLoopResult]: For program point L177-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,492 INFO L268 CegarLoopResult]: For program point L144-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,492 INFO L268 CegarLoopResult]: For program point L111-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,493 INFO L268 CegarLoopResult]: For program point L78-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,493 INFO L268 CegarLoopResult]: For program point L45-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,493 INFO L268 CegarLoopResult]: For program point L442(lines 442 572) no Hoare annotation was computed. [2020-07-21 22:59:08,493 INFO L268 CegarLoopResult]: For program point L277(lines 277 572) no Hoare annotation was computed. [2020-07-21 22:59:08,493 INFO L268 CegarLoopResult]: For program point L244(lines 244 572) no Hoare annotation was computed. [2020-07-21 22:59:08,493 INFO L268 CegarLoopResult]: For program point L178(line 178) no Hoare annotation was computed. [2020-07-21 22:59:08,493 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-07-21 22:59:08,493 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-07-21 22:59:08,494 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-07-21 22:59:08,494 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-21 22:59:08,494 INFO L268 CegarLoopResult]: For program point L509(lines 509 572) no Hoare annotation was computed. [2020-07-21 22:59:08,494 INFO L268 CegarLoopResult]: For program point L476(lines 476 572) no Hoare annotation was computed. [2020-07-21 22:59:08,494 INFO L268 CegarLoopResult]: For program point L378(lines 378 572) no Hoare annotation was computed. [2020-07-21 22:59:08,494 INFO L268 CegarLoopResult]: For program point L345(lines 345 572) no Hoare annotation was computed. [2020-07-21 22:59:08,494 INFO L268 CegarLoopResult]: For program point L312(lines 312 572) no Hoare annotation was computed. [2020-07-21 22:59:08,494 INFO L268 CegarLoopResult]: For program point L180-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,495 INFO L268 CegarLoopResult]: For program point L147-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,495 INFO L268 CegarLoopResult]: For program point L114-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,495 INFO L268 CegarLoopResult]: For program point L81-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,495 INFO L268 CegarLoopResult]: For program point L48-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,495 INFO L268 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2020-07-21 22:59:08,495 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-07-21 22:59:08,496 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-21 22:59:08,496 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-07-21 22:59:08,496 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-07-21 22:59:08,496 INFO L268 CegarLoopResult]: For program point L545(lines 545 572) no Hoare annotation was computed. [2020-07-21 22:59:08,496 INFO L268 CegarLoopResult]: For program point L215(lines 215 572) no Hoare annotation was computed. [2020-07-21 22:59:08,496 INFO L268 CegarLoopResult]: For program point L414(lines 414 572) no Hoare annotation was computed. [2020-07-21 22:59:08,496 INFO L268 CegarLoopResult]: For program point L249(lines 249 572) no Hoare annotation was computed. [2020-07-21 22:59:08,497 INFO L268 CegarLoopResult]: For program point L183-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,497 INFO L268 CegarLoopResult]: For program point L150-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,497 INFO L268 CegarLoopResult]: For program point L117-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,497 INFO L268 CegarLoopResult]: For program point L84-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,497 INFO L268 CegarLoopResult]: For program point L51-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,497 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,497 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,498 INFO L268 CegarLoopResult]: For program point L514(lines 514 572) no Hoare annotation was computed. [2020-07-21 22:59:08,498 INFO L268 CegarLoopResult]: For program point L481(lines 481 572) no Hoare annotation was computed. [2020-07-21 22:59:08,498 INFO L268 CegarLoopResult]: For program point L448(lines 448 572) no Hoare annotation was computed. [2020-07-21 22:59:08,498 INFO L268 CegarLoopResult]: For program point L283(lines 283 572) no Hoare annotation was computed. [2020-07-21 22:59:08,498 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-07-21 22:59:08,498 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-07-21 22:59:08,498 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-07-21 22:59:08,498 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-07-21 22:59:08,498 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-07-21 22:59:08,498 INFO L268 CegarLoopResult]: For program point L548(lines 548 572) no Hoare annotation was computed. [2020-07-21 22:59:08,499 INFO L268 CegarLoopResult]: For program point L383(lines 383 572) no Hoare annotation was computed. [2020-07-21 22:59:08,499 INFO L268 CegarLoopResult]: For program point L317(lines 317 572) no Hoare annotation was computed. [2020-07-21 22:59:08,499 INFO L268 CegarLoopResult]: For program point L351(lines 351 572) no Hoare annotation was computed. [2020-07-21 22:59:08,499 INFO L268 CegarLoopResult]: For program point L186-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,499 INFO L268 CegarLoopResult]: For program point L153-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,499 INFO L268 CegarLoopResult]: For program point L120-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,499 INFO L268 CegarLoopResult]: For program point L87-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,500 INFO L268 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-07-21 22:59:08,500 INFO L268 CegarLoopResult]: For program point L54-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,500 INFO L268 CegarLoopResult]: For program point L21-2(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,500 INFO L268 CegarLoopResult]: For program point L517(lines 517 572) no Hoare annotation was computed. [2020-07-21 22:59:08,500 INFO L268 CegarLoopResult]: For program point L286(lines 286 572) no Hoare annotation was computed. [2020-07-21 22:59:08,500 INFO L268 CegarLoopResult]: For program point L220(lines 220 572) no Hoare annotation was computed. [2020-07-21 22:59:08,500 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-21 22:59:08,500 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-07-21 22:59:08,500 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-07-21 22:59:08,500 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-07-21 22:59:08,501 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-07-21 22:59:08,501 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-21 22:59:08,501 INFO L268 CegarLoopResult]: For program point L419(lines 419 572) no Hoare annotation was computed. [2020-07-21 22:59:08,501 INFO L268 CegarLoopResult]: For program point L320(lines 320 572) no Hoare annotation was computed. [2020-07-21 22:59:08,501 INFO L268 CegarLoopResult]: For program point L254(lines 254 572) no Hoare annotation was computed. [2020-07-21 22:59:08,501 INFO L268 CegarLoopResult]: For program point L354(lines 354 572) no Hoare annotation was computed. [2020-07-21 22:59:08,501 INFO L268 CegarLoopResult]: For program point L189-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,501 INFO L268 CegarLoopResult]: For program point L156-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,501 INFO L268 CegarLoopResult]: For program point L123-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,501 INFO L268 CegarLoopResult]: For program point L90-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,501 INFO L268 CegarLoopResult]: For program point L57-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,502 INFO L268 CegarLoopResult]: For program point L24-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,502 INFO L268 CegarLoopResult]: For program point L487(lines 487 572) no Hoare annotation was computed. [2020-07-21 22:59:08,502 INFO L268 CegarLoopResult]: For program point L454(lines 454 572) no Hoare annotation was computed. [2020-07-21 22:59:08,502 INFO L268 CegarLoopResult]: For program point L388(lines 388 572) no Hoare annotation was computed. [2020-07-21 22:59:08,502 INFO L268 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2020-07-21 22:59:08,502 INFO L268 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2020-07-21 22:59:08,502 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-07-21 22:59:08,502 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-07-21 22:59:08,502 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-07-21 22:59:08,502 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-21 22:59:08,502 INFO L268 CegarLoopResult]: For program point L554(lines 554 572) no Hoare annotation was computed. [2020-07-21 22:59:08,503 INFO L268 CegarLoopResult]: For program point L323(lines 323 572) no Hoare annotation was computed. [2020-07-21 22:59:08,503 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 20 574) the Hoare annotation is: (let ((.cse4 (<= ~a10~0 |old(~a10~0)|)) (.cse5 (<= |old(~a10~0)| ~a10~0)) (.cse6 (<= ~a19~0 |old(~a19~0)|)) (.cse7 (= ~a1~0 |old(~a1~0)|))) (let ((.cse0 (not (< 7 |old(~a19~0)|))) (.cse1 (and .cse4 .cse5 .cse6 (< 7 ~a19~0) .cse7)) (.cse3 (and .cse4 .cse5 .cse6 .cse7)) (.cse2 (not (<= |old(~a10~0)| 2)))) (and (or .cse0 (not (<= |old(~a19~0)| 9)) .cse1) (or .cse0 .cse2 .cse1) (or (not (<= 4 |old(~a10~0)|)) .cse3 (not (<= |old(~a19~0)| 8))) (or (not (<= |old(~a19~0)| 6)) .cse3) (or .cse3 .cse2)))) [2020-07-21 22:59:08,503 INFO L268 CegarLoopResult]: For program point L357(lines 357 572) no Hoare annotation was computed. [2020-07-21 22:59:08,503 INFO L268 CegarLoopResult]: For program point L291(lines 291 572) no Hoare annotation was computed. [2020-07-21 22:59:08,503 INFO L268 CegarLoopResult]: For program point L225(lines 225 572) no Hoare annotation was computed. [2020-07-21 22:59:08,503 INFO L268 CegarLoopResult]: For program point L192-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,504 INFO L268 CegarLoopResult]: For program point L159-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,504 INFO L268 CegarLoopResult]: For program point L126-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,504 INFO L268 CegarLoopResult]: For program point L93-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,504 INFO L268 CegarLoopResult]: For program point L60-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,504 INFO L268 CegarLoopResult]: For program point L27-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,504 INFO L268 CegarLoopResult]: For program point L523(lines 523 572) no Hoare annotation was computed. [2020-07-21 22:59:08,504 INFO L268 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2020-07-21 22:59:08,504 INFO L268 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-07-21 22:59:08,504 INFO L268 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-07-21 22:59:08,504 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-07-21 22:59:08,504 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-07-21 22:59:08,505 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-07-21 22:59:08,505 INFO L268 CegarLoopResult]: For program point L557(lines 557 572) no Hoare annotation was computed. [2020-07-21 22:59:08,505 INFO L268 CegarLoopResult]: For program point L425(lines 425 572) no Hoare annotation was computed. [2020-07-21 22:59:08,505 INFO L268 CegarLoopResult]: For program point L326(lines 326 572) no Hoare annotation was computed. [2020-07-21 22:59:08,505 INFO L268 CegarLoopResult]: For program point L260(lines 260 572) no Hoare annotation was computed. [2020-07-21 22:59:08,505 INFO L268 CegarLoopResult]: For program point L393(lines 393 572) no Hoare annotation was computed. [2020-07-21 22:59:08,505 INFO L268 CegarLoopResult]: For program point L360(lines 360 572) no Hoare annotation was computed. [2020-07-21 22:59:08,505 INFO L268 CegarLoopResult]: For program point L195-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,505 INFO L268 CegarLoopResult]: For program point L162-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,505 INFO L268 CegarLoopResult]: For program point L129-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,505 INFO L268 CegarLoopResult]: For program point L96-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,506 INFO L268 CegarLoopResult]: For program point L63-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,506 INFO L268 CegarLoopResult]: For program point L30-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,506 INFO L268 CegarLoopResult]: For program point L526(lines 526 572) no Hoare annotation was computed. [2020-07-21 22:59:08,506 INFO L268 CegarLoopResult]: For program point L493(lines 493 572) no Hoare annotation was computed. [2020-07-21 22:59:08,506 INFO L268 CegarLoopResult]: For program point L460(lines 460 572) no Hoare annotation was computed. [2020-07-21 22:59:08,506 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-07-21 22:59:08,506 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-07-21 22:59:08,506 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-07-21 22:59:08,506 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-07-21 22:59:08,506 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-07-21 22:59:08,506 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-21 22:59:08,507 INFO L268 CegarLoopResult]: For program point L329(lines 329 572) no Hoare annotation was computed. [2020-07-21 22:59:08,507 INFO L268 CegarLoopResult]: For program point L296(lines 296 572) no Hoare annotation was computed. [2020-07-21 22:59:08,507 INFO L268 CegarLoopResult]: For program point L231(lines 231 572) no Hoare annotation was computed. [2020-07-21 22:59:08,507 INFO L268 CegarLoopResult]: For program point L198-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,507 INFO L268 CegarLoopResult]: For program point L165-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,507 INFO L268 CegarLoopResult]: For program point L132-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,507 INFO L268 CegarLoopResult]: For program point L99-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,507 INFO L268 CegarLoopResult]: For program point L66-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,508 INFO L268 CegarLoopResult]: For program point L33-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 22:59:08,508 INFO L268 CegarLoopResult]: For program point L529(lines 529 572) no Hoare annotation was computed. [2020-07-21 22:59:08,508 INFO L268 CegarLoopResult]: For program point L430(lines 430 572) no Hoare annotation was computed. [2020-07-21 22:59:08,508 INFO L268 CegarLoopResult]: For program point L265(lines 265 572) no Hoare annotation was computed. [2020-07-21 22:59:08,508 INFO L268 CegarLoopResult]: For program point L199(line 199) no Hoare annotation was computed. [2020-07-21 22:59:08,508 INFO L268 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2020-07-21 22:59:08,508 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-07-21 22:59:08,509 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-07-21 22:59:08,509 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-07-21 22:59:08,509 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-21 22:59:08,509 INFO L268 CegarLoopResult]: For program point L563(lines 563 572) no Hoare annotation was computed. [2020-07-21 22:59:08,509 INFO L268 CegarLoopResult]: For program point L398(lines 398 572) no Hoare annotation was computed. [2020-07-21 22:59:08,509 INFO L268 CegarLoopResult]: For program point L365(lines 365 572) no Hoare annotation was computed. [2020-07-21 22:59:08,509 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 22:59:08,509 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 22:59:08,510 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 22:59:08,510 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 22:59:08,510 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)|) (<= |old(~a10~0)| ~a10~0) (<= ~a19~0 |old(~a19~0)|) (< 7 ~a19~0) (= ~a1~0 |old(~a1~0)|))) [2020-07-21 22:59:08,510 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 576 592) no Hoare annotation was computed. [2020-07-21 22:59:08,510 INFO L264 CegarLoopResult]: At program point L590(line 590) the Hoare annotation is: (let ((.cse0 (< 7 ~a19~0)) (.cse1 (< 8 |old(~a19~0)|))) (or (and (<= ~a19~0 9) .cse0 .cse1) (not (<= |old(~a10~0)| 0)) (not (< 7 |old(~a19~0)|)) (not (= 23 |old(~a1~0)|)) (and (<= ~a10~0 0) (<= |old(~a10~0)| ~a10~0) (<= ~a19~0 |old(~a19~0)|) .cse0 (= ~a1~0 |old(~a1~0)|)) (and (<= ~a10~0 2) .cse1) (and (<= ~a19~0 8) (<= 4 ~a10~0) .cse1) (and (<= ~a19~0 6) .cse1) (not (<= |old(~a19~0)| 9)))) [2020-07-21 22:59:08,510 INFO L268 CegarLoopResult]: For program point L590-1(line 590) no Hoare annotation was computed. [2020-07-21 22:59:08,511 INFO L268 CegarLoopResult]: For program point L587(line 587) no Hoare annotation was computed. [2020-07-21 22:59:08,511 INFO L264 CegarLoopResult]: At program point L582-2(lines 582 591) the Hoare annotation is: (let ((.cse0 (< 7 ~a19~0)) (.cse1 (< 8 |old(~a19~0)|))) (or (and (<= ~a19~0 9) .cse0 .cse1) (not (<= |old(~a10~0)| 0)) (not (< 7 |old(~a19~0)|)) (not (= 23 |old(~a1~0)|)) (and (<= ~a10~0 0) (<= |old(~a10~0)| ~a10~0) (<= ~a19~0 |old(~a19~0)|) .cse0 (= ~a1~0 |old(~a1~0)|)) (and (<= ~a10~0 2) .cse1) (and (<= ~a19~0 8) (<= 4 ~a10~0) .cse1) (and (<= ~a19~0 6) .cse1) (not (<= |old(~a19~0)| 9)))) [2020-07-21 22:59:08,511 INFO L268 CegarLoopResult]: For program point L582-3(lines 576 592) no Hoare annotation was computed. [2020-07-21 22:59:08,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:59:08 BoogieIcfgContainer [2020-07-21 22:59:08,530 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 22:59:08,532 INFO L168 Benchmark]: Toolchain (without parser) took 48362.36 ms. Allocated memory was 139.5 MB in the beginning and 570.4 MB in the end (delta: 431.0 MB). Free memory was 101.4 MB in the beginning and 89.9 MB in the end (delta: 11.5 MB). Peak memory consumption was 442.5 MB. Max. memory is 7.1 GB. [2020-07-21 22:59:08,533 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 121.3 MB in the beginning and 121.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 22:59:08,533 INFO L168 Benchmark]: CACSL2BoogieTranslator took 731.91 ms. Allocated memory was 139.5 MB in the beginning and 205.5 MB in the end (delta: 66.1 MB). Free memory was 101.2 MB in the beginning and 171.4 MB in the end (delta: -70.3 MB). Peak memory consumption was 34.6 MB. Max. memory is 7.1 GB. [2020-07-21 22:59:08,534 INFO L168 Benchmark]: Boogie Preprocessor took 94.42 ms. Allocated memory is still 205.5 MB. Free memory was 171.4 MB in the beginning and 166.6 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2020-07-21 22:59:08,535 INFO L168 Benchmark]: RCFGBuilder took 1359.98 ms. Allocated memory was 205.5 MB in the beginning and 237.5 MB in the end (delta: 32.0 MB). Free memory was 166.6 MB in the beginning and 179.5 MB in the end (delta: -12.9 MB). Peak memory consumption was 80.5 MB. Max. memory is 7.1 GB. [2020-07-21 22:59:08,536 INFO L168 Benchmark]: TraceAbstraction took 46169.03 ms. Allocated memory was 237.5 MB in the beginning and 570.4 MB in the end (delta: 332.9 MB). Free memory was 179.5 MB in the beginning and 89.9 MB in the end (delta: 89.6 MB). Peak memory consumption was 422.5 MB. Max. memory is 7.1 GB. [2020-07-21 22:59:08,539 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 121.3 MB in the beginning and 121.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 731.91 ms. Allocated memory was 139.5 MB in the beginning and 205.5 MB in the end (delta: 66.1 MB). Free memory was 101.2 MB in the beginning and 171.4 MB in the end (delta: -70.3 MB). Peak memory consumption was 34.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 94.42 ms. Allocated memory is still 205.5 MB. Free memory was 171.4 MB in the beginning and 166.6 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1359.98 ms. Allocated memory was 205.5 MB in the beginning and 237.5 MB in the end (delta: 32.0 MB). Free memory was 166.6 MB in the beginning and 179.5 MB in the end (delta: -12.9 MB). Peak memory consumption was 80.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 46169.03 ms. Allocated memory was 237.5 MB in the beginning and 570.4 MB in the end (delta: 332.9 MB). Free memory was 179.5 MB in the beginning and 89.9 MB in the end (delta: 89.6 MB). Peak memory consumption was 422.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 133]: 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: (((((((((a19 <= 9 && 7 < a19) && 8 < \old(a19)) || !(\old(a10) <= 0)) || !(7 < \old(a19))) || !(23 == \old(a1))) || ((((a10 <= 0 && \old(a10) <= a10) && a19 <= \old(a19)) && 7 < a19) && a1 == \old(a1))) || (a10 <= 2 && 8 < \old(a19))) || ((a19 <= 8 && 4 <= a10) && 8 < \old(a19))) || (a19 <= 6 && 8 < \old(a19))) || !(\old(a19) <= 9) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 43.9s, OverallIterations: 10, TraceHistogramMax: 4, AutomataDifference: 24.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 696 SDtfs, 3301 SDslu, 301 SDs, 0 SdLazy, 7138 SolverSat, 1298 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3759 GetRequests, 3692 SyntacticMatches, 6 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 25.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2664occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 10 MinimizatonAttempts, 1371 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 91 PreInvPairs, 135 NumberOfFragments, 310 HoareAnnotationTreeSize, 91 FomulaSimplifications, 3694 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 7 FomulaSimplificationsInter, 5618 FormulaSimplificationTreeSizeReductionInter, 1.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 14.9s InterpolantComputationTime, 2537 NumberOfCodeBlocks, 1965 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 3482 ConstructedInterpolants, 6 QuantifiedInterpolants, 2221614 SizeOfPredicates, 15 NumberOfNonLiveVariables, 3510 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 14 InterpolantComputations, 6 PerfectInterpolantSequences, 3001/3204 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...