/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 17:19:59,825 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-20 17:19:59,841 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 17:19:59,843 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 17:19:59,844 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 17:19:59,846 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 17:19:59,848 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 17:19:59,849 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 17:19:59,850 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 17:19:59,851 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 17:19:59,852 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 17:19:59,853 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 17:19:59,854 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 17:19:59,855 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 17:19:59,856 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 17:19:59,857 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 17:19:59,859 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 17:19:59,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 17:19:59,863 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 17:19:59,864 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 17:19:59,865 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 17:19:59,866 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 17:19:59,873 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 17:19:59,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 17:19:59,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 17:19:59,891 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 17:19:59,892 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 17:19:59,917 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 17:19:59,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 17:19:59,920 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 17:19:59,920 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 17:19:59,921 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 17:19:59,921 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 17:19:59,921 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 17:19:59,921 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 17:19:59,921 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 17:19:59,922 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 17:19:59,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 17:19:59,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 17:19:59,923 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 17:19:59,924 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 17:19:59,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 17:19:59,924 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 17:19:59,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 17:19:59,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 17:19:59,924 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 17:19:59,925 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 17:19:59,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 17:19:59,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 17:19:59,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 17:19:59,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 17:19:59,926 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 17:19:59,926 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 17:19:59,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:19:59,926 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 17:19:59,926 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 17:19:59,927 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 17:20:00,220 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 17:20:00,233 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 17:20:00,237 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 17:20:00,238 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 17:20:00,239 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 17:20:00,240 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label05.c [2020-07-20 17:20:00,307 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b9231394/3e6ca3b5b88f4f58a3d7e1e4876a8315/FLAG8b8689443 [2020-07-20 17:20:00,907 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 17:20:00,908 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label05.c [2020-07-20 17:20:00,921 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b9231394/3e6ca3b5b88f4f58a3d7e1e4876a8315/FLAG8b8689443 [2020-07-20 17:20:01,124 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b9231394/3e6ca3b5b88f4f58a3d7e1e4876a8315 [2020-07-20 17:20:01,134 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 17:20:01,138 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 17:20:01,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 17:20:01,141 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 17:20:01,144 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 17:20:01,145 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:20:01" (1/1) ... [2020-07-20 17:20:01,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bd08649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:20:01, skipping insertion in model container [2020-07-20 17:20:01,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:20:01" (1/1) ... [2020-07-20 17:20:01,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 17:20:01,221 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 17:20:01,688 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 17:20:01,694 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 17:20:01,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 17:20:01,960 INFO L208 MainTranslator]: Completed translation [2020-07-20 17:20:01,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:20:01 WrapperNode [2020-07-20 17:20:01,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 17:20:01,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 17:20:01,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 17:20:01,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 17:20:01,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:20:01" (1/1) ... [2020-07-20 17:20:01,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:20:01" (1/1) ... [2020-07-20 17:20:01,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:20:01" (1/1) ... [2020-07-20 17:20:01,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:20:01" (1/1) ... [2020-07-20 17:20:02,038 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:20:01" (1/1) ... [2020-07-20 17:20:02,056 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:20:01" (1/1) ... [2020-07-20 17:20:02,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:20:01" (1/1) ... [2020-07-20 17:20:02,069 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 17:20:02,070 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 17:20:02,070 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 17:20:02,070 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 17:20:02,071 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:20:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 17:20:02,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 17:20:02,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 17:20:02,131 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-20 17:20:02,131 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 17:20:02,131 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-20 17:20:02,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 17:20:02,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 17:20:02,132 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 17:20:02,132 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 17:20:02,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 17:20:02,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 17:20:03,354 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 17:20:03,354 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 17:20:03,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:20:03 BoogieIcfgContainer [2020-07-20 17:20:03,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 17:20:03,368 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 17:20:03,368 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 17:20:03,371 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 17:20:03,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 05:20:01" (1/3) ... [2020-07-20 17:20:03,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a7f8d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:20:03, skipping insertion in model container [2020-07-20 17:20:03,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:20:01" (2/3) ... [2020-07-20 17:20:03,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a7f8d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:20:03, skipping insertion in model container [2020-07-20 17:20:03,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:20:03" (3/3) ... [2020-07-20 17:20:03,377 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label05.c [2020-07-20 17:20:03,390 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 17:20:03,401 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 17:20:03,418 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 17:20:03,454 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 17:20:03,455 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 17:20:03,455 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 17:20:03,456 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 17:20:03,456 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 17:20:03,456 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 17:20:03,456 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 17:20:03,456 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 17:20:03,483 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-07-20 17:20:03,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-07-20 17:20:03,500 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:20:03,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:20:03,502 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:20:03,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:20:03,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1904695938, now seen corresponding path program 1 times [2020-07-20 17:20:03,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:20:03,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196923968] [2020-07-20 17:20:03,519 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:20:03,748 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:20:03,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:20:03,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 17:20:03,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:20:03,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:20:03,909 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:20:03,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196923968] [2020-07-20 17:20:03,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:20:03,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 17:20:03,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207330196] [2020-07-20 17:20:03,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 17:20:03,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:20:03,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 17:20:03,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:20:03,945 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 3 states. [2020-07-20 17:20:04,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:20:04,862 INFO L93 Difference]: Finished difference Result 572 states and 963 transitions. [2020-07-20 17:20:04,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 17:20:04,866 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2020-07-20 17:20:04,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:20:04,883 INFO L225 Difference]: With dead ends: 572 [2020-07-20 17:20:04,884 INFO L226 Difference]: Without dead ends: 278 [2020-07-20 17:20:04,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:20:04,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-07-20 17:20:04,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2020-07-20 17:20:04,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-07-20 17:20:04,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 394 transitions. [2020-07-20 17:20:04,968 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 394 transitions. Word has length 100 [2020-07-20 17:20:04,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:20:04,969 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 394 transitions. [2020-07-20 17:20:04,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 17:20:04,969 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 394 transitions. [2020-07-20 17:20:04,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-07-20 17:20:04,976 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:20:04,976 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:20:05,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:20:05,192 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:20:05,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:20:05,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1236531093, now seen corresponding path program 1 times [2020-07-20 17:20:05,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:20:05,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845597369] [2020-07-20 17:20:05,194 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:20:05,323 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:20:05,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:20:05,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 17:20:05,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:20:05,389 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:20:05,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:20:05,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845597369] [2020-07-20 17:20:05,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:20:05,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 17:20:05,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258874918] [2020-07-20 17:20:05,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 17:20:05,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:20:05,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 17:20:05,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 17:20:05,396 INFO L87 Difference]: Start difference. First operand 278 states and 394 transitions. Second operand 5 states. [2020-07-20 17:20:06,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:20:06,319 INFO L93 Difference]: Finished difference Result 842 states and 1218 transitions. [2020-07-20 17:20:06,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 17:20:06,324 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-07-20 17:20:06,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:20:06,332 INFO L225 Difference]: With dead ends: 842 [2020-07-20 17:20:06,333 INFO L226 Difference]: Without dead ends: 570 [2020-07-20 17:20:06,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-20 17:20:06,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2020-07-20 17:20:06,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 556. [2020-07-20 17:20:06,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-07-20 17:20:06,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 785 transitions. [2020-07-20 17:20:06,388 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 785 transitions. Word has length 110 [2020-07-20 17:20:06,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:20:06,388 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 785 transitions. [2020-07-20 17:20:06,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 17:20:06,389 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 785 transitions. [2020-07-20 17:20:06,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-07-20 17:20:06,395 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:20:06,396 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:20:06,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:20:06,609 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:20:06,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:20:06,610 INFO L82 PathProgramCache]: Analyzing trace with hash 235879383, now seen corresponding path program 1 times [2020-07-20 17:20:06,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:20:06,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644137282] [2020-07-20 17:20:06,612 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:20:06,756 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:20:06,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:20:06,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 17:20:06,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:20:06,838 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:20:06,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:20:06,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644137282] [2020-07-20 17:20:06,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:20:06,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 17:20:06,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134348974] [2020-07-20 17:20:06,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 17:20:06,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:20:06,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 17:20:06,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:20:06,855 INFO L87 Difference]: Start difference. First operand 556 states and 785 transitions. Second operand 3 states. [2020-07-20 17:20:07,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:20:07,449 INFO L93 Difference]: Finished difference Result 1652 states and 2385 transitions. [2020-07-20 17:20:07,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 17:20:07,456 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-07-20 17:20:07,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:20:07,468 INFO L225 Difference]: With dead ends: 1652 [2020-07-20 17:20:07,469 INFO L226 Difference]: Without dead ends: 1102 [2020-07-20 17:20:07,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:20:07,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2020-07-20 17:20:07,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 1102. [2020-07-20 17:20:07,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2020-07-20 17:20:07,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1504 transitions. [2020-07-20 17:20:07,526 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1504 transitions. Word has length 111 [2020-07-20 17:20:07,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:20:07,527 INFO L479 AbstractCegarLoop]: Abstraction has 1102 states and 1504 transitions. [2020-07-20 17:20:07,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 17:20:07,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1504 transitions. [2020-07-20 17:20:07,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-07-20 17:20:07,538 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:20:07,539 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:20:07,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:20:07,753 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:20:07,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:20:07,754 INFO L82 PathProgramCache]: Analyzing trace with hash -2022552526, now seen corresponding path program 1 times [2020-07-20 17:20:07,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:20:07,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008424999] [2020-07-20 17:20:07,756 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:20:07,881 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:20:07,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:20:07,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 17:20:07,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:20:07,961 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:20:07,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 17:20:08,070 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:20:08,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008424999] [2020-07-20 17:20:08,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 17:20:08,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-07-20 17:20:08,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729678615] [2020-07-20 17:20:08,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 17:20:08,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:20:08,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 17:20:08,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-07-20 17:20:08,074 INFO L87 Difference]: Start difference. First operand 1102 states and 1504 transitions. Second operand 8 states. [2020-07-20 17:20:10,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:20:10,141 INFO L93 Difference]: Finished difference Result 4220 states and 6124 transitions. [2020-07-20 17:20:10,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 17:20:10,142 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 119 [2020-07-20 17:20:10,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:20:10,175 INFO L225 Difference]: With dead ends: 4220 [2020-07-20 17:20:10,175 INFO L226 Difference]: Without dead ends: 3124 [2020-07-20 17:20:10,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-07-20 17:20:10,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3124 states. [2020-07-20 17:20:10,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3124 to 2349. [2020-07-20 17:20:10,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2349 states. [2020-07-20 17:20:10,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2349 states to 2349 states and 3071 transitions. [2020-07-20 17:20:10,339 INFO L78 Accepts]: Start accepts. Automaton has 2349 states and 3071 transitions. Word has length 119 [2020-07-20 17:20:10,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:20:10,339 INFO L479 AbstractCegarLoop]: Abstraction has 2349 states and 3071 transitions. [2020-07-20 17:20:10,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 17:20:10,339 INFO L276 IsEmpty]: Start isEmpty. Operand 2349 states and 3071 transitions. [2020-07-20 17:20:10,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-07-20 17:20:10,355 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:20:10,356 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2020-07-20 17:20:10,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:20:10,571 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:20:10,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:20:10,572 INFO L82 PathProgramCache]: Analyzing trace with hash 308691738, now seen corresponding path program 1 times [2020-07-20 17:20:10,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:20:10,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662366055] [2020-07-20 17:20:10,573 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:20:10,697 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:20:10,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:20:10,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 17:20:10,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:20:10,784 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:20:10,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 17:20:10,863 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:20:10,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662366055] [2020-07-20 17:20:10,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 17:20:10,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-20 17:20:10,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394172811] [2020-07-20 17:20:10,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 17:20:10,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:20:10,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 17:20:10,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 17:20:10,867 INFO L87 Difference]: Start difference. First operand 2349 states and 3071 transitions. Second operand 7 states. [2020-07-20 17:20:12,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:20:12,584 INFO L93 Difference]: Finished difference Result 7590 states and 10616 transitions. [2020-07-20 17:20:12,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 17:20:12,584 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2020-07-20 17:20:12,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:20:12,624 INFO L225 Difference]: With dead ends: 7590 [2020-07-20 17:20:12,624 INFO L226 Difference]: Without dead ends: 5251 [2020-07-20 17:20:12,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 257 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-07-20 17:20:12,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5251 states. [2020-07-20 17:20:12,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5251 to 4567. [2020-07-20 17:20:12,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4567 states. [2020-07-20 17:20:12,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4567 states to 4567 states and 5929 transitions. [2020-07-20 17:20:12,819 INFO L78 Accepts]: Start accepts. Automaton has 4567 states and 5929 transitions. Word has length 131 [2020-07-20 17:20:12,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:20:12,819 INFO L479 AbstractCegarLoop]: Abstraction has 4567 states and 5929 transitions. [2020-07-20 17:20:12,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 17:20:12,823 INFO L276 IsEmpty]: Start isEmpty. Operand 4567 states and 5929 transitions. [2020-07-20 17:20:12,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-07-20 17:20:12,836 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:20:12,836 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:20:13,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:20:13,050 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:20:13,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:20:13,051 INFO L82 PathProgramCache]: Analyzing trace with hash -720996718, now seen corresponding path program 1 times [2020-07-20 17:20:13,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:20:13,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63311710] [2020-07-20 17:20:13,052 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:20:13,177 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:20:13,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:20:13,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 17:20:13,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:20:13,216 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-20 17:20:13,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:20:13,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63311710] [2020-07-20 17:20:13,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:20:13,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 17:20:13,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327355346] [2020-07-20 17:20:13,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 17:20:13,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:20:13,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 17:20:13,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:20:13,223 INFO L87 Difference]: Start difference. First operand 4567 states and 5929 transitions. Second operand 3 states. [2020-07-20 17:20:13,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:20:13,879 INFO L93 Difference]: Finished difference Result 11993 states and 15911 transitions. [2020-07-20 17:20:13,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 17:20:13,880 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 135 [2020-07-20 17:20:13,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:20:13,920 INFO L225 Difference]: With dead ends: 11993 [2020-07-20 17:20:13,921 INFO L226 Difference]: Without dead ends: 7436 [2020-07-20 17:20:13,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:20:13,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7436 states. [2020-07-20 17:20:14,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7436 to 5665. [2020-07-20 17:20:14,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5665 states. [2020-07-20 17:20:14,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5665 states to 5665 states and 7367 transitions. [2020-07-20 17:20:14,116 INFO L78 Accepts]: Start accepts. Automaton has 5665 states and 7367 transitions. Word has length 135 [2020-07-20 17:20:14,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:20:14,116 INFO L479 AbstractCegarLoop]: Abstraction has 5665 states and 7367 transitions. [2020-07-20 17:20:14,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 17:20:14,117 INFO L276 IsEmpty]: Start isEmpty. Operand 5665 states and 7367 transitions. [2020-07-20 17:20:14,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-07-20 17:20:14,130 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:20:14,131 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:20:14,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:20:14,344 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:20:14,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:20:14,345 INFO L82 PathProgramCache]: Analyzing trace with hash -676972618, now seen corresponding path program 1 times [2020-07-20 17:20:14,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:20:14,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956625145] [2020-07-20 17:20:14,346 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:20:14,454 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:20:14,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:20:14,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 17:20:14,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:20:14,495 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:20:14,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 17:20:14,563 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:20:14,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956625145] [2020-07-20 17:20:14,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 17:20:14,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-20 17:20:14,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177680818] [2020-07-20 17:20:14,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 17:20:14,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:20:14,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 17:20:14,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 17:20:14,567 INFO L87 Difference]: Start difference. First operand 5665 states and 7367 transitions. Second operand 7 states. [2020-07-20 17:20:15,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:20:15,511 INFO L93 Difference]: Finished difference Result 10413 states and 13551 transitions. [2020-07-20 17:20:15,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 17:20:15,512 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2020-07-20 17:20:15,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:20:15,544 INFO L225 Difference]: With dead ends: 10413 [2020-07-20 17:20:15,544 INFO L226 Difference]: Without dead ends: 6245 [2020-07-20 17:20:15,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-07-20 17:20:15,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6245 states. [2020-07-20 17:20:15,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6245 to 5669. [2020-07-20 17:20:15,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5669 states. [2020-07-20 17:20:15,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5669 states to 5669 states and 7057 transitions. [2020-07-20 17:20:15,716 INFO L78 Accepts]: Start accepts. Automaton has 5669 states and 7057 transitions. Word has length 142 [2020-07-20 17:20:15,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:20:15,717 INFO L479 AbstractCegarLoop]: Abstraction has 5669 states and 7057 transitions. [2020-07-20 17:20:15,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 17:20:15,717 INFO L276 IsEmpty]: Start isEmpty. Operand 5669 states and 7057 transitions. [2020-07-20 17:20:15,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-07-20 17:20:15,732 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:20:15,733 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:20:15,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:20:15,948 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:20:15,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:20:15,948 INFO L82 PathProgramCache]: Analyzing trace with hash 809347390, now seen corresponding path program 1 times [2020-07-20 17:20:15,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:20:15,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140415645] [2020-07-20 17:20:15,949 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:20:16,076 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:20:16,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:20:16,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 17:20:16,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:20:16,139 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 24 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 17:20:16,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 17:20:16,335 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 17:20:16,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140415645] [2020-07-20 17:20:16,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 17:20:16,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-07-20 17:20:16,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042245303] [2020-07-20 17:20:16,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 17:20:16,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:20:16,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 17:20:16,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 17:20:16,338 INFO L87 Difference]: Start difference. First operand 5669 states and 7057 transitions. Second operand 5 states. [2020-07-20 17:20:17,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:20:17,031 INFO L93 Difference]: Finished difference Result 5677 states and 7068 transitions. [2020-07-20 17:20:17,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 17:20:17,032 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-07-20 17:20:17,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:20:17,063 INFO L225 Difference]: With dead ends: 5677 [2020-07-20 17:20:17,067 INFO L226 Difference]: Without dead ends: 5675 [2020-07-20 17:20:17,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 286 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-07-20 17:20:17,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5675 states. [2020-07-20 17:20:17,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5675 to 5387. [2020-07-20 17:20:17,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5387 states. [2020-07-20 17:20:17,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5387 states to 5387 states and 6705 transitions. [2020-07-20 17:20:17,216 INFO L78 Accepts]: Start accepts. Automaton has 5387 states and 6705 transitions. Word has length 146 [2020-07-20 17:20:17,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:20:17,217 INFO L479 AbstractCegarLoop]: Abstraction has 5387 states and 6705 transitions. [2020-07-20 17:20:17,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 17:20:17,217 INFO L276 IsEmpty]: Start isEmpty. Operand 5387 states and 6705 transitions. [2020-07-20 17:20:17,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-07-20 17:20:17,233 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:20:17,234 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2020-07-20 17:20:17,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:20:17,450 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:20:17,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:20:17,450 INFO L82 PathProgramCache]: Analyzing trace with hash -742331683, now seen corresponding path program 1 times [2020-07-20 17:20:17,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:20:17,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704325294] [2020-07-20 17:20:17,451 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:20:17,588 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:20:17,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:20:17,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 17:20:17,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:20:17,639 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-20 17:20:17,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 17:20:17,729 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-20 17:20:17,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704325294] [2020-07-20 17:20:17,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 17:20:17,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-20 17:20:17,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530788923] [2020-07-20 17:20:17,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 17:20:17,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:20:17,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 17:20:17,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 17:20:17,733 INFO L87 Difference]: Start difference. First operand 5387 states and 6705 transitions. Second operand 6 states. [2020-07-20 17:20:18,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:20:18,694 INFO L93 Difference]: Finished difference Result 9692 states and 12174 transitions. [2020-07-20 17:20:18,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 17:20:18,695 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2020-07-20 17:20:18,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:20:18,715 INFO L225 Difference]: With dead ends: 9692 [2020-07-20 17:20:18,715 INFO L226 Difference]: Without dead ends: 6096 [2020-07-20 17:20:18,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 298 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-20 17:20:18,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6096 states. [2020-07-20 17:20:18,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6096 to 5808. [2020-07-20 17:20:18,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5808 states. [2020-07-20 17:20:18,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5808 states to 5808 states and 7020 transitions. [2020-07-20 17:20:18,845 INFO L78 Accepts]: Start accepts. Automaton has 5808 states and 7020 transitions. Word has length 151 [2020-07-20 17:20:18,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:20:18,846 INFO L479 AbstractCegarLoop]: Abstraction has 5808 states and 7020 transitions. [2020-07-20 17:20:18,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 17:20:18,846 INFO L276 IsEmpty]: Start isEmpty. Operand 5808 states and 7020 transitions. [2020-07-20 17:20:18,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-07-20 17:20:18,860 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:20:18,860 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-07-20 17:20:19,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:20:19,075 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:20:19,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:20:19,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1695161737, now seen corresponding path program 1 times [2020-07-20 17:20:19,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:20:19,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062185356] [2020-07-20 17:20:19,077 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:20:19,226 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:20:19,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:20:19,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 17:20:19,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:20:19,270 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-07-20 17:20:19,271 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:20:19,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062185356] [2020-07-20 17:20:19,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:20:19,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 17:20:19,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223723528] [2020-07-20 17:20:19,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 17:20:19,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:20:19,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 17:20:19,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:20:19,273 INFO L87 Difference]: Start difference. First operand 5808 states and 7020 transitions. Second operand 3 states. [2020-07-20 17:20:19,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:20:19,817 INFO L93 Difference]: Finished difference Result 5810 states and 7021 transitions. [2020-07-20 17:20:19,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 17:20:19,818 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2020-07-20 17:20:19,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:20:19,837 INFO L225 Difference]: With dead ends: 5810 [2020-07-20 17:20:19,838 INFO L226 Difference]: Without dead ends: 5808 [2020-07-20 17:20:19,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:20:19,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5808 states. [2020-07-20 17:20:20,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5808 to 5808. [2020-07-20 17:20:20,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5808 states. [2020-07-20 17:20:20,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5808 states to 5808 states and 7019 transitions. [2020-07-20 17:20:20,025 INFO L78 Accepts]: Start accepts. Automaton has 5808 states and 7019 transitions. Word has length 161 [2020-07-20 17:20:20,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:20:20,026 INFO L479 AbstractCegarLoop]: Abstraction has 5808 states and 7019 transitions. [2020-07-20 17:20:20,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 17:20:20,026 INFO L276 IsEmpty]: Start isEmpty. Operand 5808 states and 7019 transitions. [2020-07-20 17:20:20,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-07-20 17:20:20,045 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:20:20,045 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:20:20,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:20:20,260 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:20:20,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:20:20,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1628827276, now seen corresponding path program 1 times [2020-07-20 17:20:20,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:20:20,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884324983] [2020-07-20 17:20:20,263 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:20:20,465 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:20:20,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:20:20,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 17:20:20,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:20:20,530 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 134 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-07-20 17:20:20,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 17:20:20,615 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 142 proven. 16 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-07-20 17:20:20,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884324983] [2020-07-20 17:20:20,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 17:20:20,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-20 17:20:20,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224444905] [2020-07-20 17:20:20,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 17:20:20,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:20:20,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 17:20:20,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 17:20:20,619 INFO L87 Difference]: Start difference. First operand 5808 states and 7019 transitions. Second operand 7 states. [2020-07-20 17:20:22,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:20:22,101 INFO L93 Difference]: Finished difference Result 9081 states and 11033 transitions. [2020-07-20 17:20:22,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 17:20:22,102 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 214 [2020-07-20 17:20:22,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:20:22,102 INFO L225 Difference]: With dead ends: 9081 [2020-07-20 17:20:22,102 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 17:20:22,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-07-20 17:20:22,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 17:20:22,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 17:20:22,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 17:20:22,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 17:20:22,121 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 214 [2020-07-20 17:20:22,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:20:22,121 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 17:20:22,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 17:20:22,122 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 17:20:22,122 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 17:20:22,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:20:22,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 17:20:23,392 WARN L193 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 143 [2020-07-20 17:20:23,811 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 143 [2020-07-20 17:20:26,604 WARN L193 SmtUtils]: Spent 2.71 s on a formula simplification. DAG size of input: 225 DAG size of output: 112 [2020-07-20 17:20:27,555 WARN L193 SmtUtils]: Spent 927.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 64 [2020-07-20 17:20:28,430 WARN L193 SmtUtils]: Spent 873.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 64 [2020-07-20 17:20:28,434 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 17:20:28,435 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a8~0 |old(~a8~0)|) (<= ~a16~0 |old(~a16~0)|) (= ~a7~0 |old(~a7~0)|) (<= |old(~a16~0)| ~a16~0) (= ~a21~0 |old(~a21~0)|)) [2020-07-20 17:20:28,435 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 17:20:28,435 INFO L268 CegarLoopResult]: For program point L333(lines 333 390) no Hoare annotation was computed. [2020-07-20 17:20:28,435 INFO L268 CegarLoopResult]: For program point L102(lines 102 390) no Hoare annotation was computed. [2020-07-20 17:20:28,436 INFO L268 CegarLoopResult]: For program point L565-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,436 INFO L268 CegarLoopResult]: For program point L532-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,436 INFO L268 CegarLoopResult]: For program point L499-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,436 INFO L268 CegarLoopResult]: For program point L466-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,436 INFO L268 CegarLoopResult]: For program point L433-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,436 INFO L268 CegarLoopResult]: For program point L400-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,436 INFO L268 CegarLoopResult]: For program point L268(lines 268 390) no Hoare annotation was computed. [2020-07-20 17:20:28,437 INFO L268 CegarLoopResult]: For program point L136(lines 136 390) no Hoare annotation was computed. [2020-07-20 17:20:28,437 INFO L268 CegarLoopResult]: For program point L566(line 566) no Hoare annotation was computed. [2020-07-20 17:20:28,437 INFO L268 CegarLoopResult]: For program point L533(line 533) no Hoare annotation was computed. [2020-07-20 17:20:28,437 INFO L268 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2020-07-20 17:20:28,437 INFO L268 CegarLoopResult]: For program point L467(line 467) no Hoare annotation was computed. [2020-07-20 17:20:28,437 INFO L268 CegarLoopResult]: For program point L434(line 434) no Hoare annotation was computed. [2020-07-20 17:20:28,437 INFO L268 CegarLoopResult]: For program point L401(line 401) no Hoare annotation was computed. [2020-07-20 17:20:28,438 INFO L268 CegarLoopResult]: For program point L203(lines 203 390) no Hoare annotation was computed. [2020-07-20 17:20:28,438 INFO L268 CegarLoopResult]: For program point L72(lines 72 390) no Hoare annotation was computed. [2020-07-20 17:20:28,438 INFO L268 CegarLoopResult]: For program point L568-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,438 INFO L268 CegarLoopResult]: For program point L535-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,438 INFO L268 CegarLoopResult]: For program point L502-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,438 INFO L268 CegarLoopResult]: For program point L469-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,438 INFO L268 CegarLoopResult]: For program point L436-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,439 INFO L268 CegarLoopResult]: For program point L403-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,439 INFO L268 CegarLoopResult]: For program point L337(lines 337 390) no Hoare annotation was computed. [2020-07-20 17:20:28,439 INFO L268 CegarLoopResult]: For program point L238(lines 238 390) no Hoare annotation was computed. [2020-07-20 17:20:28,439 INFO L268 CegarLoopResult]: For program point L569(line 569) no Hoare annotation was computed. [2020-07-20 17:20:28,439 INFO L268 CegarLoopResult]: For program point L536(line 536) no Hoare annotation was computed. [2020-07-20 17:20:28,439 INFO L268 CegarLoopResult]: For program point L503(line 503) no Hoare annotation was computed. [2020-07-20 17:20:28,439 INFO L268 CegarLoopResult]: For program point L470(line 470) no Hoare annotation was computed. [2020-07-20 17:20:28,440 INFO L268 CegarLoopResult]: For program point L437(line 437) no Hoare annotation was computed. [2020-07-20 17:20:28,440 INFO L268 CegarLoopResult]: For program point L404(line 404) no Hoare annotation was computed. [2020-07-20 17:20:28,440 INFO L268 CegarLoopResult]: For program point L173(lines 173 390) no Hoare annotation was computed. [2020-07-20 17:20:28,440 INFO L268 CegarLoopResult]: For program point L140(lines 140 390) no Hoare annotation was computed. [2020-07-20 17:20:28,440 INFO L268 CegarLoopResult]: For program point L372(lines 372 390) no Hoare annotation was computed. [2020-07-20 17:20:28,440 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 458) no Hoare annotation was computed. [2020-07-20 17:20:28,440 INFO L268 CegarLoopResult]: For program point L306(lines 306 390) no Hoare annotation was computed. [2020-07-20 17:20:28,441 INFO L268 CegarLoopResult]: For program point L273(lines 273 390) no Hoare annotation was computed. [2020-07-20 17:20:28,441 INFO L268 CegarLoopResult]: For program point L108(lines 108 390) no Hoare annotation was computed. [2020-07-20 17:20:28,441 INFO L268 CegarLoopResult]: For program point L571-1(lines 571 573) no Hoare annotation was computed. [2020-07-20 17:20:28,441 INFO L268 CegarLoopResult]: For program point L538-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,441 INFO L268 CegarLoopResult]: For program point L505-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,441 INFO L268 CegarLoopResult]: For program point L472-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,441 INFO L268 CegarLoopResult]: For program point L439-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,442 INFO L268 CegarLoopResult]: For program point L406-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,442 INFO L268 CegarLoopResult]: For program point L208(lines 208 390) no Hoare annotation was computed. [2020-07-20 17:20:28,442 INFO L268 CegarLoopResult]: For program point L43(lines 43 390) no Hoare annotation was computed. [2020-07-20 17:20:28,442 INFO L268 CegarLoopResult]: For program point L572(line 572) no Hoare annotation was computed. [2020-07-20 17:20:28,442 INFO L268 CegarLoopResult]: For program point L539(line 539) no Hoare annotation was computed. [2020-07-20 17:20:28,442 INFO L268 CegarLoopResult]: For program point L506(line 506) no Hoare annotation was computed. [2020-07-20 17:20:28,442 INFO L268 CegarLoopResult]: For program point L473(line 473) no Hoare annotation was computed. [2020-07-20 17:20:28,442 INFO L268 CegarLoopResult]: For program point L440(line 440) no Hoare annotation was computed. [2020-07-20 17:20:28,443 INFO L268 CegarLoopResult]: For program point L407(line 407) no Hoare annotation was computed. [2020-07-20 17:20:28,443 INFO L268 CegarLoopResult]: For program point L144(lines 144 390) no Hoare annotation was computed. [2020-07-20 17:20:28,443 INFO L268 CegarLoopResult]: For program point L541-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,443 INFO L268 CegarLoopResult]: For program point L508-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,443 INFO L268 CegarLoopResult]: For program point L475-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,443 INFO L268 CegarLoopResult]: For program point L442-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,443 INFO L268 CegarLoopResult]: For program point L409-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,444 INFO L268 CegarLoopResult]: For program point L178(lines 178 390) no Hoare annotation was computed. [2020-07-20 17:20:28,444 INFO L268 CegarLoopResult]: For program point L542(line 542) no Hoare annotation was computed. [2020-07-20 17:20:28,444 INFO L268 CegarLoopResult]: For program point L509(line 509) no Hoare annotation was computed. [2020-07-20 17:20:28,444 INFO L268 CegarLoopResult]: For program point L476(line 476) no Hoare annotation was computed. [2020-07-20 17:20:28,444 INFO L268 CegarLoopResult]: For program point L443(line 443) no Hoare annotation was computed. [2020-07-20 17:20:28,444 INFO L268 CegarLoopResult]: For program point L410(line 410) no Hoare annotation was computed. [2020-07-20 17:20:28,444 INFO L268 CegarLoopResult]: For program point L377(lines 377 390) no Hoare annotation was computed. [2020-07-20 17:20:28,445 INFO L268 CegarLoopResult]: For program point L278(lines 278 390) no Hoare annotation was computed. [2020-07-20 17:20:28,445 INFO L268 CegarLoopResult]: For program point L245(lines 245 390) no Hoare annotation was computed. [2020-07-20 17:20:28,445 INFO L268 CegarLoopResult]: For program point L80(lines 80 390) no Hoare annotation was computed. [2020-07-20 17:20:28,445 INFO L268 CegarLoopResult]: For program point L345(lines 345 390) no Hoare annotation was computed. [2020-07-20 17:20:28,445 INFO L268 CegarLoopResult]: For program point L312(lines 312 390) no Hoare annotation was computed. [2020-07-20 17:20:28,445 INFO L268 CegarLoopResult]: For program point L114(lines 114 390) no Hoare annotation was computed. [2020-07-20 17:20:28,445 INFO L268 CegarLoopResult]: For program point L544-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,445 INFO L268 CegarLoopResult]: For program point L511-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,446 INFO L268 CegarLoopResult]: For program point L478-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,446 INFO L268 CegarLoopResult]: For program point L445-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,446 INFO L268 CegarLoopResult]: For program point L412-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,446 INFO L268 CegarLoopResult]: For program point L214(lines 214 390) no Hoare annotation was computed. [2020-07-20 17:20:28,446 INFO L268 CegarLoopResult]: For program point L148(lines 148 390) no Hoare annotation was computed. [2020-07-20 17:20:28,446 INFO L268 CegarLoopResult]: For program point L49(lines 49 390) no Hoare annotation was computed. [2020-07-20 17:20:28,446 INFO L268 CegarLoopResult]: For program point L545(line 545) no Hoare annotation was computed. [2020-07-20 17:20:28,446 INFO L268 CegarLoopResult]: For program point L512(line 512) no Hoare annotation was computed. [2020-07-20 17:20:28,447 INFO L268 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2020-07-20 17:20:28,447 INFO L268 CegarLoopResult]: For program point L446(line 446) no Hoare annotation was computed. [2020-07-20 17:20:28,447 INFO L268 CegarLoopResult]: For program point L413(line 413) no Hoare annotation was computed. [2020-07-20 17:20:28,447 INFO L268 CegarLoopResult]: For program point L84(lines 84 390) no Hoare annotation was computed. [2020-07-20 17:20:28,447 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,447 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,447 INFO L268 CegarLoopResult]: For program point L547-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,448 INFO L268 CegarLoopResult]: For program point L514-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,448 INFO L268 CegarLoopResult]: For program point L481-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,448 INFO L268 CegarLoopResult]: For program point L448-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,448 INFO L268 CegarLoopResult]: For program point L382(lines 382 390) no Hoare annotation was computed. [2020-07-20 17:20:28,448 INFO L268 CegarLoopResult]: For program point L415-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,448 INFO L268 CegarLoopResult]: For program point L316(lines 316 390) no Hoare annotation was computed. [2020-07-20 17:20:28,448 INFO L268 CegarLoopResult]: For program point L250(lines 250 390) no Hoare annotation was computed. [2020-07-20 17:20:28,448 INFO L268 CegarLoopResult]: For program point L548(line 548) no Hoare annotation was computed. [2020-07-20 17:20:28,448 INFO L268 CegarLoopResult]: For program point L515(line 515) no Hoare annotation was computed. [2020-07-20 17:20:28,449 INFO L268 CegarLoopResult]: For program point L482(line 482) no Hoare annotation was computed. [2020-07-20 17:20:28,449 INFO L268 CegarLoopResult]: For program point L449(line 449) no Hoare annotation was computed. [2020-07-20 17:20:28,449 INFO L268 CegarLoopResult]: For program point L416(line 416) no Hoare annotation was computed. [2020-07-20 17:20:28,449 INFO L268 CegarLoopResult]: For program point L218(lines 218 390) no Hoare annotation was computed. [2020-07-20 17:20:28,449 INFO L268 CegarLoopResult]: For program point L152(lines 152 390) no Hoare annotation was computed. [2020-07-20 17:20:28,449 INFO L268 CegarLoopResult]: For program point L119(lines 119 390) no Hoare annotation was computed. [2020-07-20 17:20:28,449 INFO L268 CegarLoopResult]: For program point L318(lines 318 390) no Hoare annotation was computed. [2020-07-20 17:20:28,450 INFO L268 CegarLoopResult]: For program point L186(lines 186 390) no Hoare annotation was computed. [2020-07-20 17:20:28,450 INFO L268 CegarLoopResult]: For program point L54(lines 54 390) no Hoare annotation was computed. [2020-07-20 17:20:28,450 INFO L268 CegarLoopResult]: For program point L550-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,450 INFO L268 CegarLoopResult]: For program point L517-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,450 INFO L268 CegarLoopResult]: For program point L484-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,450 INFO L268 CegarLoopResult]: For program point L451-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,450 INFO L268 CegarLoopResult]: For program point L418-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,450 INFO L268 CegarLoopResult]: For program point L286(lines 286 390) no Hoare annotation was computed. [2020-07-20 17:20:28,450 INFO L268 CegarLoopResult]: For program point L551(line 551) no Hoare annotation was computed. [2020-07-20 17:20:28,451 INFO L268 CegarLoopResult]: For program point L518(line 518) no Hoare annotation was computed. [2020-07-20 17:20:28,451 INFO L268 CegarLoopResult]: For program point L485(line 485) no Hoare annotation was computed. [2020-07-20 17:20:28,451 INFO L268 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2020-07-20 17:20:28,451 INFO L268 CegarLoopResult]: For program point L419(line 419) no Hoare annotation was computed. [2020-07-20 17:20:28,451 INFO L268 CegarLoopResult]: For program point L353(lines 353 390) no Hoare annotation was computed. [2020-07-20 17:20:28,451 INFO L268 CegarLoopResult]: For program point L189(lines 189 390) no Hoare annotation was computed. [2020-07-20 17:20:28,452 INFO L268 CegarLoopResult]: For program point L553-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,452 INFO L268 CegarLoopResult]: For program point L520-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,452 INFO L268 CegarLoopResult]: For program point L487-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,452 INFO L268 CegarLoopResult]: For program point L454-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,452 INFO L268 CegarLoopResult]: For program point L421-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,452 INFO L268 CegarLoopResult]: For program point L355(lines 355 390) no Hoare annotation was computed. [2020-07-20 17:20:28,452 INFO L268 CegarLoopResult]: For program point L256(lines 256 390) no Hoare annotation was computed. [2020-07-20 17:20:28,452 INFO L268 CegarLoopResult]: For program point L223(lines 223 390) no Hoare annotation was computed. [2020-07-20 17:20:28,453 INFO L268 CegarLoopResult]: For program point L124(lines 124 390) no Hoare annotation was computed. [2020-07-20 17:20:28,453 INFO L268 CegarLoopResult]: For program point L554(line 554) no Hoare annotation was computed. [2020-07-20 17:20:28,453 INFO L268 CegarLoopResult]: For program point L521(line 521) no Hoare annotation was computed. [2020-07-20 17:20:28,453 INFO L268 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2020-07-20 17:20:28,453 INFO L268 CegarLoopResult]: For program point L455(line 455) no Hoare annotation was computed. [2020-07-20 17:20:28,453 INFO L268 CegarLoopResult]: For program point L422(line 422) no Hoare annotation was computed. [2020-07-20 17:20:28,453 INFO L268 CegarLoopResult]: For program point L92(lines 92 390) no Hoare annotation was computed. [2020-07-20 17:20:28,454 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 30 575) the Hoare annotation is: (let ((.cse0 (not (= 1 |old(~a20~0)|))) (.cse8 (not (<= |old(~a8~0)| 13)))) (let ((.cse19 (or .cse0 .cse8)) (.cse20 (not (<= |old(~a16~0)| 5))) (.cse21 (not (< |old(~a8~0)| 15)))) (let ((.cse25 (<= ~a16~0 5)) (.cse27 (< ~a8~0 15)) (.cse11 (<= ~a8~0 |old(~a8~0)|)) (.cse12 (<= ~a16~0 |old(~a16~0)|)) (.cse13 (<= ~a8~0 13)) (.cse18 (<= ~a17~0 0)) (.cse3 (= 1 ~a20~0)) (.cse14 (= ~a21~0 |old(~a21~0)|)) (.cse26 (and .cse19 (or .cse0 .cse20 .cse21))) (.cse5 (not (<= |old(~a17~0)| 0)))) (let ((.cse9 (not (<= |old(~a16~0)| 4))) (.cse7 (and (or .cse26 .cse5) (or .cse20 .cse21 .cse5))) (.cse23 (= ~a7~0 |old(~a7~0)|)) (.cse15 (and (or (and .cse11 .cse12 .cse18 .cse25 .cse27) (and .cse11 .cse12 .cse13 .cse18 .cse3)) .cse14)) (.cse24 (<= 15 ~a8~0)) (.cse6 (not (<= |old(~a21~0)| 0))) (.cse10 (not (= 1 |old(~a7~0)|))) (.cse16 (= 1 ~a7~0)) (.cse17 (<= |old(~a16~0)| ~a16~0)) (.cse22 (not (<= 5 |old(~a16~0)|))) (.cse1 (not (<= 15 |old(~a8~0)|))) (.cse2 (not (<= |old(~a7~0)| 0))) (.cse4 (not (= 1 |old(~a21~0)|)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (or (and (or .cse6 .cse7) (or .cse6 .cse8 .cse9)) .cse10 (and (or (and .cse11 .cse12 .cse13 .cse14 (<= ~a16~0 4)) .cse15) .cse16 .cse17)) (or .cse18 (and .cse19 (or .cse20 .cse21)) .cse4 .cse22 .cse5) (or .cse11 .cse0 .cse6 .cse10 .cse8) (or .cse1 .cse2 (and .cse11 .cse12 .cse23 .cse17 .cse24 .cse14) .cse4) (or .cse1 .cse10 (and .cse11 .cse12 .cse16 .cse17 .cse18 .cse24 .cse14) .cse9 .cse4 .cse5) (or .cse0 .cse1 .cse2 .cse3 .cse22 .cse4) (or (and (or (and (or .cse0 .cse2 .cse8) (or .cse2 .cse20)) .cse4) (or .cse0 .cse8 .cse9 .cse4) (or .cse7 .cse4)) (and .cse23 .cse17 (or (and .cse12 .cse11 (<= ~a7~0 0) .cse25 .cse14) (and .cse11 .cse12 .cse13 .cse3 .cse14) .cse15))) (or .cse1 .cse10 .cse20 (and .cse11 .cse16 .cse18 .cse25 .cse24 (<= 5 ~a16~0) .cse14) .cse22 .cse4 .cse5) (or .cse6 .cse10 .cse26 (and .cse16 (or (and .cse25 .cse27 .cse3) (and .cse12 .cse13 .cse3)) .cse17 .cse14) .cse22) (or .cse1 .cse18 .cse2 .cse4 .cse5)))))) [2020-07-20 17:20:28,454 INFO L268 CegarLoopResult]: For program point L324(lines 324 390) no Hoare annotation was computed. [2020-07-20 17:20:28,454 INFO L268 CegarLoopResult]: For program point L556-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,454 INFO L268 CegarLoopResult]: For program point L523-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,454 INFO L268 CegarLoopResult]: For program point L490-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,454 INFO L268 CegarLoopResult]: For program point L457-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,455 INFO L268 CegarLoopResult]: For program point L391(lines 391 393) no Hoare annotation was computed. [2020-07-20 17:20:28,455 INFO L268 CegarLoopResult]: For program point L424-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,455 INFO L268 CegarLoopResult]: For program point L391-2(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,455 INFO L268 CegarLoopResult]: For program point L292(lines 292 390) no Hoare annotation was computed. [2020-07-20 17:20:28,455 INFO L268 CegarLoopResult]: For program point L160(lines 160 390) no Hoare annotation was computed. [2020-07-20 17:20:28,455 INFO L268 CegarLoopResult]: For program point L557(line 557) no Hoare annotation was computed. [2020-07-20 17:20:28,455 INFO L268 CegarLoopResult]: For program point L524(line 524) no Hoare annotation was computed. [2020-07-20 17:20:28,455 INFO L268 CegarLoopResult]: For program point L491(line 491) no Hoare annotation was computed. [2020-07-20 17:20:28,456 INFO L268 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2020-07-20 17:20:28,456 INFO L268 CegarLoopResult]: For program point L425(line 425) no Hoare annotation was computed. [2020-07-20 17:20:28,456 INFO L268 CegarLoopResult]: For program point L392(line 392) no Hoare annotation was computed. [2020-07-20 17:20:28,456 INFO L268 CegarLoopResult]: For program point L194(lines 194 390) no Hoare annotation was computed. [2020-07-20 17:20:28,456 INFO L268 CegarLoopResult]: For program point L62(lines 62 390) no Hoare annotation was computed. [2020-07-20 17:20:28,456 INFO L268 CegarLoopResult]: For program point L261(lines 261 390) no Hoare annotation was computed. [2020-07-20 17:20:28,456 INFO L268 CegarLoopResult]: For program point L129(lines 129 390) no Hoare annotation was computed. [2020-07-20 17:20:28,456 INFO L268 CegarLoopResult]: For program point L559-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,456 INFO L268 CegarLoopResult]: For program point L526-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,457 INFO L268 CegarLoopResult]: For program point L493-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,457 INFO L268 CegarLoopResult]: For program point L460-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,457 INFO L268 CegarLoopResult]: For program point L427-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,457 INFO L268 CegarLoopResult]: For program point L361(lines 361 390) no Hoare annotation was computed. [2020-07-20 17:20:28,457 INFO L268 CegarLoopResult]: For program point L394-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,457 INFO L268 CegarLoopResult]: For program point L97(lines 97 390) no Hoare annotation was computed. [2020-07-20 17:20:28,457 INFO L268 CegarLoopResult]: For program point L31(lines 31 390) no Hoare annotation was computed. [2020-07-20 17:20:28,457 INFO L268 CegarLoopResult]: For program point L560(line 560) no Hoare annotation was computed. [2020-07-20 17:20:28,458 INFO L268 CegarLoopResult]: For program point L527(line 527) no Hoare annotation was computed. [2020-07-20 17:20:28,458 INFO L268 CegarLoopResult]: For program point L494(line 494) no Hoare annotation was computed. [2020-07-20 17:20:28,458 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-20 17:20:28,458 INFO L268 CegarLoopResult]: For program point L428(line 428) no Hoare annotation was computed. [2020-07-20 17:20:28,458 INFO L268 CegarLoopResult]: For program point L395(line 395) no Hoare annotation was computed. [2020-07-20 17:20:28,458 INFO L268 CegarLoopResult]: For program point L329(lines 329 390) no Hoare annotation was computed. [2020-07-20 17:20:28,458 INFO L268 CegarLoopResult]: For program point L197(lines 197 390) no Hoare annotation was computed. [2020-07-20 17:20:28,458 INFO L268 CegarLoopResult]: For program point L65(lines 65 390) no Hoare annotation was computed. [2020-07-20 17:20:28,459 INFO L268 CegarLoopResult]: For program point L363(lines 363 390) no Hoare annotation was computed. [2020-07-20 17:20:28,459 INFO L268 CegarLoopResult]: For program point L231(lines 231 390) no Hoare annotation was computed. [2020-07-20 17:20:28,459 INFO L268 CegarLoopResult]: For program point L165(lines 165 390) no Hoare annotation was computed. [2020-07-20 17:20:28,459 INFO L268 CegarLoopResult]: For program point L562-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,459 INFO L268 CegarLoopResult]: For program point L529-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,459 INFO L268 CegarLoopResult]: For program point L496-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,459 INFO L268 CegarLoopResult]: For program point L463-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,459 INFO L268 CegarLoopResult]: For program point L430-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,459 INFO L268 CegarLoopResult]: For program point L397-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:20:28,460 INFO L268 CegarLoopResult]: For program point L265(lines 265 390) no Hoare annotation was computed. [2020-07-20 17:20:28,460 INFO L268 CegarLoopResult]: For program point L563(line 563) no Hoare annotation was computed. [2020-07-20 17:20:28,460 INFO L268 CegarLoopResult]: For program point L530(line 530) no Hoare annotation was computed. [2020-07-20 17:20:28,460 INFO L268 CegarLoopResult]: For program point L497(line 497) no Hoare annotation was computed. [2020-07-20 17:20:28,460 INFO L268 CegarLoopResult]: For program point L464(line 464) no Hoare annotation was computed. [2020-07-20 17:20:28,460 INFO L268 CegarLoopResult]: For program point L431(line 431) no Hoare annotation was computed. [2020-07-20 17:20:28,460 INFO L268 CegarLoopResult]: For program point L398(line 398) no Hoare annotation was computed. [2020-07-20 17:20:28,461 INFO L268 CegarLoopResult]: For program point L365(lines 365 390) no Hoare annotation was computed. [2020-07-20 17:20:28,461 INFO L268 CegarLoopResult]: For program point L299(lines 299 390) no Hoare annotation was computed. [2020-07-20 17:20:28,461 INFO L268 CegarLoopResult]: For program point L35(lines 35 390) no Hoare annotation was computed. [2020-07-20 17:20:28,461 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 17:20:28,461 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a7~0 0) (<= ~a16~0 5) (<= 15 ~a8~0) (<= 5 ~a16~0) (= 1 ~a21~0) (= 1 ~a20~0)) [2020-07-20 17:20:28,461 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 17:20:28,462 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 17:20:28,462 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 577 594) the Hoare annotation is: (or (not (= 1 |old(~a20~0)|)) (not (<= 15 |old(~a8~0)|)) (and (<= ~a8~0 |old(~a8~0)|) (= ~a7~0 |old(~a7~0)|) (<= ~a16~0 5) (<= 15 ~a8~0) (<= 5 ~a16~0) (= 1 ~a20~0) (= ~a21~0 |old(~a21~0)|)) (not (<= |old(~a7~0)| 0)) (not (<= |old(~a16~0)| 5)) (not (<= 5 |old(~a16~0)|)) (not (= 1 |old(~a21~0)|))) [2020-07-20 17:20:28,462 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 577 594) no Hoare annotation was computed. [2020-07-20 17:20:28,462 INFO L264 CegarLoopResult]: At program point L591(line 591) the Hoare annotation is: (let ((.cse7 (<= ~a8~0 13)) (.cse2 (<= ~a16~0 5)) (.cse4 (< ~a8~0 15)) (.cse10 (= 1 ~a20~0))) (let ((.cse1 (<= ~a17~0 0)) (.cse0 (= 1 ~a7~0)) (.cse6 (<= ~a21~0 0)) (.cse5 (or (and .cse7 .cse10) (and .cse2 .cse4 .cse10))) (.cse9 (<= ~a7~0 0)) (.cse3 (= 1 ~a21~0)) (.cse8 (<= ~a16~0 4))) (or (not (<= |old(~a7~0)| 0)) (and .cse0 .cse1 .cse2 .cse3) (and (or (and .cse1 .cse2 .cse4) (and .cse1 .cse5)) .cse3) (and .cse0 (or (and .cse6 .cse1 .cse2 .cse4) (and .cse7 .cse6 .cse8))) (not (<= 5 |old(~a16~0)|)) (and (or (and .cse9 .cse2) (and .cse7 .cse9 .cse10)) .cse3) (and .cse0 .cse6 .cse5 (<= 5 ~a16~0)) (not (= 1 |old(~a20~0)|)) (not (<= 15 |old(~a8~0)|)) (and .cse9 (<= 15 ~a8~0) .cse3) (not (<= |old(~a16~0)| 5)) (not (= 1 |old(~a21~0)|)) (and .cse7 .cse3 .cse10 .cse8)))) [2020-07-20 17:20:28,462 INFO L268 CegarLoopResult]: For program point L591-1(line 591) no Hoare annotation was computed. [2020-07-20 17:20:28,463 INFO L268 CegarLoopResult]: For program point L588(line 588) no Hoare annotation was computed. [2020-07-20 17:20:28,463 INFO L264 CegarLoopResult]: At program point L583-2(lines 583 593) the Hoare annotation is: (let ((.cse7 (<= ~a8~0 13)) (.cse2 (<= ~a16~0 5)) (.cse4 (< ~a8~0 15)) (.cse10 (= 1 ~a20~0))) (let ((.cse1 (<= ~a17~0 0)) (.cse0 (= 1 ~a7~0)) (.cse6 (<= ~a21~0 0)) (.cse5 (or (and .cse7 .cse10) (and .cse2 .cse4 .cse10))) (.cse9 (<= ~a7~0 0)) (.cse3 (= 1 ~a21~0)) (.cse8 (<= ~a16~0 4))) (or (not (<= |old(~a7~0)| 0)) (and .cse0 .cse1 .cse2 .cse3) (and (or (and .cse1 .cse2 .cse4) (and .cse1 .cse5)) .cse3) (and .cse0 (or (and .cse6 .cse1 .cse2 .cse4) (and .cse7 .cse6 .cse8))) (not (<= 5 |old(~a16~0)|)) (and (or (and .cse9 .cse2) (and .cse7 .cse9 .cse10)) .cse3) (and .cse0 .cse6 .cse5 (<= 5 ~a16~0)) (not (= 1 |old(~a20~0)|)) (not (<= 15 |old(~a8~0)|)) (and .cse9 (<= 15 ~a8~0) .cse3) (not (<= |old(~a16~0)| 5)) (not (= 1 |old(~a21~0)|)) (and .cse7 .cse3 .cse10 .cse8)))) [2020-07-20 17:20:28,463 INFO L268 CegarLoopResult]: For program point L583-3(lines 577 594) no Hoare annotation was computed. [2020-07-20 17:20:28,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 05:20:28 BoogieIcfgContainer [2020-07-20 17:20:28,486 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 17:20:28,488 INFO L168 Benchmark]: Toolchain (without parser) took 27352.22 ms. Allocated memory was 138.4 MB in the beginning and 651.7 MB in the end (delta: 513.3 MB). Free memory was 101.1 MB in the beginning and 361.2 MB in the end (delta: -260.1 MB). Peak memory consumption was 470.2 MB. Max. memory is 7.1 GB. [2020-07-20 17:20:28,489 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 17:20:28,490 INFO L168 Benchmark]: CACSL2BoogieTranslator took 820.29 ms. Allocated memory was 138.4 MB in the beginning and 206.0 MB in the end (delta: 67.6 MB). Free memory was 100.7 MB in the beginning and 172.8 MB in the end (delta: -72.1 MB). Peak memory consumption was 35.7 MB. Max. memory is 7.1 GB. [2020-07-20 17:20:28,491 INFO L168 Benchmark]: Boogie Preprocessor took 107.73 ms. Allocated memory is still 206.0 MB. Free memory was 172.8 MB in the beginning and 167.8 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. [2020-07-20 17:20:28,491 INFO L168 Benchmark]: RCFGBuilder took 1296.21 ms. Allocated memory was 206.0 MB in the beginning and 238.6 MB in the end (delta: 32.5 MB). Free memory was 167.8 MB in the beginning and 182.3 MB in the end (delta: -14.5 MB). Peak memory consumption was 83.8 MB. Max. memory is 7.1 GB. [2020-07-20 17:20:28,492 INFO L168 Benchmark]: TraceAbstraction took 25118.57 ms. Allocated memory was 238.6 MB in the beginning and 651.7 MB in the end (delta: 413.1 MB). Free memory was 182.3 MB in the beginning and 361.2 MB in the end (delta: -178.9 MB). Peak memory consumption was 451.3 MB. Max. memory is 7.1 GB. [2020-07-20 17:20:28,496 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 820.29 ms. Allocated memory was 138.4 MB in the beginning and 206.0 MB in the end (delta: 67.6 MB). Free memory was 100.7 MB in the beginning and 172.8 MB in the end (delta: -72.1 MB). Peak memory consumption was 35.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.73 ms. Allocated memory is still 206.0 MB. Free memory was 172.8 MB in the beginning and 167.8 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1296.21 ms. Allocated memory was 206.0 MB in the beginning and 238.6 MB in the end (delta: 32.5 MB). Free memory was 167.8 MB in the beginning and 182.3 MB in the end (delta: -14.5 MB). Peak memory consumption was 83.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 25118.57 ms. Allocated memory was 238.6 MB in the beginning and 651.7 MB in the end (delta: 413.1 MB). Free memory was 182.3 MB in the beginning and 361.2 MB in the end (delta: -178.9 MB). Peak memory consumption was 451.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 458]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 583]: Loop Invariant Derived loop invariant: (((((((((((!(\old(a7) <= 0) || (((1 == a7 && a17 <= 0) && a16 <= 5) && 1 == a21)) || ((((a17 <= 0 && a16 <= 5) && a8 < 15) || (a17 <= 0 && ((a8 <= 13 && 1 == a20) || ((a16 <= 5 && a8 < 15) && 1 == a20)))) && 1 == a21)) || (1 == a7 && ((((a21 <= 0 && a17 <= 0) && a16 <= 5) && a8 < 15) || ((a8 <= 13 && a21 <= 0) && a16 <= 4)))) || !(5 <= \old(a16))) || (((a7 <= 0 && a16 <= 5) || ((a8 <= 13 && a7 <= 0) && 1 == a20)) && 1 == a21)) || (((1 == a7 && a21 <= 0) && ((a8 <= 13 && 1 == a20) || ((a16 <= 5 && a8 < 15) && 1 == a20))) && 5 <= a16)) || !(1 == \old(a20))) || !(15 <= \old(a8))) || ((a7 <= 0 && 15 <= a8) && 1 == a21)) || !(\old(a16) <= 5)) || !(1 == \old(a21))) || (((a8 <= 13 && 1 == a21) && 1 == a20) && a16 <= 4) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 18.8s, OverallIterations: 11, TraceHistogramMax: 5, AutomataDifference: 11.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 6.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 546 SDtfs, 3800 SDslu, 387 SDs, 0 SdLazy, 8568 SolverSat, 1195 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2442 GetRequests, 2384 SyntacticMatches, 6 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5808occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 4396 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 206 PreInvPairs, 304 NumberOfFragments, 1046 HoareAnnotationTreeSize, 206 FomulaSimplifications, 221064 FormulaSimplificationTreeSizeReduction, 1.4s HoareSimplificationTime, 7 FomulaSimplificationsInter, 68998 FormulaSimplificationTreeSizeReductionInter, 4.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 1520 NumberOfCodeBlocks, 1520 NumberOfCodeBlocksAsserted, 44 NumberOfCheckSat, 2406 ConstructedInterpolants, 0 QuantifiedInterpolants, 655103 SizeOfPredicates, 13 NumberOfNonLiveVariables, 4678 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 17 InterpolantComputations, 5 PerfectInterpolantSequences, 1000/1063 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...