/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 01:17:59,012 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 01:17:59,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 01:17:59,035 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 01:17:59,035 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 01:17:59,038 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 01:17:59,040 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 01:17:59,050 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 01:17:59,055 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 01:17:59,058 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 01:17:59,060 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 01:17:59,061 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 01:17:59,061 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 01:17:59,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 01:17:59,065 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 01:17:59,066 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 01:17:59,068 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 01:17:59,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 01:17:59,071 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 01:17:59,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 01:17:59,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 01:17:59,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 01:17:59,086 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 01:17:59,086 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 01:17:59,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 01:17:59,098 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 01:17:59,099 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 01:17:59,100 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 01:17:59,101 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 01:17:59,134 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 01:17:59,134 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 01:17:59,141 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 01:17:59,142 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 01:17:59,142 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 01:17:59,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 01:17:59,142 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 01:17:59,142 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 01:17:59,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 01:17:59,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 01:17:59,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 01:17:59,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 01:17:59,146 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 01:17:59,147 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 01:17:59,147 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 01:17:59,147 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 01:17:59,147 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 01:17:59,147 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 01:17:59,148 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 01:17:59,148 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 01:17:59,148 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 01:17:59,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 01:17:59,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 01:17:59,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 01:17:59,149 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 01:17:59,149 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 01:17:59,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:17:59,151 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 01:17:59,151 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 01:17:59,151 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 01:17:59,421 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 01:17:59,435 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 01:17:59,438 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 01:17:59,440 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 01:17:59,440 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 01:17:59,441 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label07.c [2020-07-21 01:17:59,508 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0e735b75/d9fbce2182274ccab5a288a972578f86/FLAG38ce65d54 [2020-07-21 01:18:00,081 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 01:18:00,082 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label07.c [2020-07-21 01:18:00,097 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0e735b75/d9fbce2182274ccab5a288a972578f86/FLAG38ce65d54 [2020-07-21 01:18:00,379 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0e735b75/d9fbce2182274ccab5a288a972578f86 [2020-07-21 01:18:00,388 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 01:18:00,392 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 01:18:00,393 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 01:18:00,393 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 01:18:00,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 01:18:00,398 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:18:00" (1/1) ... [2020-07-21 01:18:00,404 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a5e6636 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:18:00, skipping insertion in model container [2020-07-21 01:18:00,404 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:18:00" (1/1) ... [2020-07-21 01:18:00,413 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 01:18:00,477 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 01:18:01,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:18:01,084 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 01:18:01,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:18:01,246 INFO L208 MainTranslator]: Completed translation [2020-07-21 01:18:01,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:18:01 WrapperNode [2020-07-21 01:18:01,246 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 01:18:01,247 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 01:18:01,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 01:18:01,247 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 01:18:01,257 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:18:01" (1/1) ... [2020-07-21 01:18:01,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:18:01" (1/1) ... [2020-07-21 01:18:01,275 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:18:01" (1/1) ... [2020-07-21 01:18:01,276 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:18:01" (1/1) ... [2020-07-21 01:18:01,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:18:01" (1/1) ... [2020-07-21 01:18:01,332 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:18:01" (1/1) ... [2020-07-21 01:18:01,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:18:01" (1/1) ... [2020-07-21 01:18:01,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 01:18:01,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 01:18:01,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 01:18:01,348 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 01:18:01,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:18:01" (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 [2020-07-21 01:18:01,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 01:18:01,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 01:18:01,410 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 01:18:01,410 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 01:18:01,410 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 01:18:01,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 01:18:01,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 01:18:01,411 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 01:18:01,411 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 01:18:01,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 01:18:01,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 01:18:02,552 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 01:18:02,552 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 01:18:02,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:18:02 BoogieIcfgContainer [2020-07-21 01:18:02,559 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 01:18:02,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 01:18:02,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 01:18:02,564 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 01:18:02,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:18:00" (1/3) ... [2020-07-21 01:18:02,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@634e4ed4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:18:02, skipping insertion in model container [2020-07-21 01:18:02,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:18:01" (2/3) ... [2020-07-21 01:18:02,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@634e4ed4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:18:02, skipping insertion in model container [2020-07-21 01:18:02,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:18:02" (3/3) ... [2020-07-21 01:18:02,568 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label07.c [2020-07-21 01:18:02,579 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 01:18:02,587 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 01:18:02,602 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 01:18:02,629 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 01:18:02,630 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 01:18:02,630 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 01:18:02,630 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 01:18:02,630 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 01:18:02,630 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 01:18:02,631 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 01:18:02,631 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 01:18:02,656 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-07-21 01:18:02,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-07-21 01:18:02,669 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:18:02,670 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:18:02,671 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:18:02,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:18:02,678 INFO L82 PathProgramCache]: Analyzing trace with hash -897711290, now seen corresponding path program 1 times [2020-07-21 01:18:02,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:18:02,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193848478] [2020-07-21 01:18:02,689 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:02,912 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:18:02,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:18:02,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 68 conjunts are in the unsatisfiable core [2020-07-21 01:18:02,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:18:03,299 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 31 [2020-07-21 01:18:03,450 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 29 [2020-07-21 01:18:03,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:18:03,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:18:03,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193848478] [2020-07-21 01:18:03,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:18:03,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-21 01:18:03,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231720700] [2020-07-21 01:18:03,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-21 01:18:03,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:18:03,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-21 01:18:03,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-07-21 01:18:03,912 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 11 states. [2020-07-21 01:18:05,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:18:05,716 INFO L93 Difference]: Finished difference Result 472 states and 791 transitions. [2020-07-21 01:18:05,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 01:18:05,718 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 110 [2020-07-21 01:18:05,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:18:05,730 INFO L225 Difference]: With dead ends: 472 [2020-07-21 01:18:05,731 INFO L226 Difference]: Without dead ends: 203 [2020-07-21 01:18:05,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=102, Invalid=170, Unknown=0, NotChecked=0, Total=272 [2020-07-21 01:18:05,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-07-21 01:18:05,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-07-21 01:18:05,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-07-21 01:18:05,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 275 transitions. [2020-07-21 01:18:05,800 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 275 transitions. Word has length 110 [2020-07-21 01:18:05,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:18:05,801 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 275 transitions. [2020-07-21 01:18:05,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-21 01:18:05,802 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 275 transitions. [2020-07-21 01:18:05,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-07-21 01:18:05,807 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:18:05,807 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:18:06,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:06,021 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:18:06,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:18:06,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1096074977, now seen corresponding path program 1 times [2020-07-21 01:18:06,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:18:06,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905763385] [2020-07-21 01:18:06,024 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:06,124 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:18:06,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:18:06,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 48 conjunts are in the unsatisfiable core [2020-07-21 01:18:06,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:18:06,444 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 31 [2020-07-21 01:18:06,844 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:18:06,848 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2020-07-21 01:18:06,849 INFO L501 QuantifierPusher]: Distributing 1 conjuncts over 2 disjuncts [2020-07-21 01:18:06,936 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:18:06,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:18:07,679 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-07-21 01:18:07,863 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-07-21 01:18:08,009 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-07-21 01:18:08,142 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-07-21 01:18:08,147 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 7 conjuncts [2020-07-21 01:18:08,150 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 6 conjuncts [2020-07-21 01:18:08,151 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 5 conjuncts [2020-07-21 01:18:08,153 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 4 conjuncts [2020-07-21 01:18:08,154 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:18:08,155 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 2 conjuncts [2020-07-21 01:18:08,159 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 5 conjuncts [2020-07-21 01:18:08,160 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 4 conjuncts [2020-07-21 01:18:08,162 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:18:08,169 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:18:08,171 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:18:08,174 INFO L501 QuantifierPusher]: Distributing 14 disjuncts over 3 conjuncts [2020-07-21 01:18:08,175 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 01:18:08,176 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 01:18:08,177 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:18:08,181 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:18:08,182 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:18:08,184 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:18:08,185 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:18:08,186 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:18:08,187 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:18:08,193 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 01:18:08,194 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:18:08,196 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 01:18:08,197 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:18:08,804 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 37 [2020-07-21 01:18:08,807 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 8, 6, 7, 1] term [2020-07-21 01:18:08,807 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 01:18:08,875 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:18:08,876 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:08,937 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:08,962 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:09,149 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:18:09,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905763385] [2020-07-21 01:18:09,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:18:09,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 25 [2020-07-21 01:18:09,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107480211] [2020-07-21 01:18:09,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-21 01:18:09,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:18:09,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-21 01:18:09,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2020-07-21 01:18:09,154 INFO L87 Difference]: Start difference. First operand 203 states and 275 transitions. Second operand 25 states. [2020-07-21 01:18:10,096 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-07-21 01:18:10,593 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2020-07-21 01:18:10,884 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-07-21 01:18:11,374 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 01:18:11,625 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-07-21 01:18:12,071 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-07-21 01:18:14,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:18:14,155 INFO L93 Difference]: Finished difference Result 588 states and 878 transitions. [2020-07-21 01:18:14,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-21 01:18:14,156 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 118 [2020-07-21 01:18:14,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:18:14,174 INFO L225 Difference]: With dead ends: 588 [2020-07-21 01:18:14,175 INFO L226 Difference]: Without dead ends: 451 [2020-07-21 01:18:14,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 208 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=551, Invalid=1611, Unknown=0, NotChecked=0, Total=2162 [2020-07-21 01:18:14,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-07-21 01:18:14,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 417. [2020-07-21 01:18:14,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-07-21 01:18:14,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 548 transitions. [2020-07-21 01:18:14,257 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 548 transitions. Word has length 118 [2020-07-21 01:18:14,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:18:14,258 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 548 transitions. [2020-07-21 01:18:14,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-21 01:18:14,258 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 548 transitions. [2020-07-21 01:18:14,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-07-21 01:18:14,263 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:18:14,263 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:18:14,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:14,474 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:18:14,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:18:14,475 INFO L82 PathProgramCache]: Analyzing trace with hash 181616223, now seen corresponding path program 1 times [2020-07-21 01:18:14,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:18:14,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [904488525] [2020-07-21 01:18:14,477 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:14,609 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:18:14,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:18:14,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:18:14,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:18:14,660 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:18:14,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:18:14,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [904488525] [2020-07-21 01:18:14,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:18:14,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:18:14,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125105453] [2020-07-21 01:18:14,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:18:14,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:18:14,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:18:14,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:18:14,667 INFO L87 Difference]: Start difference. First operand 417 states and 548 transitions. Second operand 3 states. [2020-07-21 01:18:15,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:18:15,244 INFO L93 Difference]: Finished difference Result 1042 states and 1433 transitions. [2020-07-21 01:18:15,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:18:15,245 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 121 [2020-07-21 01:18:15,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:18:15,253 INFO L225 Difference]: With dead ends: 1042 [2020-07-21 01:18:15,253 INFO L226 Difference]: Without dead ends: 691 [2020-07-21 01:18:15,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:18:15,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2020-07-21 01:18:15,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 691. [2020-07-21 01:18:15,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-07-21 01:18:15,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 897 transitions. [2020-07-21 01:18:15,290 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 897 transitions. Word has length 121 [2020-07-21 01:18:15,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:18:15,291 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 897 transitions. [2020-07-21 01:18:15,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:18:15,291 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 897 transitions. [2020-07-21 01:18:15,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-07-21 01:18:15,298 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:18:15,299 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:18:15,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:15,513 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:18:15,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:18:15,515 INFO L82 PathProgramCache]: Analyzing trace with hash -764741730, now seen corresponding path program 1 times [2020-07-21 01:18:15,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:18:15,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [504475270] [2020-07-21 01:18:15,516 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:15,631 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 01:18:15,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:18:15,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 01:18:15,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:18:15,693 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:18:15,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:18:15,906 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2020-07-21 01:18:15,958 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:15,961 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[4, 2, 1] term [2020-07-21 01:18:15,961 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:18:15,962 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 01:18:15,963 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:15,963 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:16,080 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:18:16,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [504475270] [2020-07-21 01:18:16,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:18:16,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:18:16,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145880768] [2020-07-21 01:18:16,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:18:16,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:18:16,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:18:16,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:18:16,083 INFO L87 Difference]: Start difference. First operand 691 states and 897 transitions. Second operand 7 states. [2020-07-21 01:18:17,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:18:17,326 INFO L93 Difference]: Finished difference Result 1933 states and 2552 transitions. [2020-07-21 01:18:17,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 01:18:17,327 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 136 [2020-07-21 01:18:17,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:18:17,339 INFO L225 Difference]: With dead ends: 1933 [2020-07-21 01:18:17,343 INFO L226 Difference]: Without dead ends: 1169 [2020-07-21 01:18:17,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 268 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-07-21 01:18:17,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2020-07-21 01:18:17,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1106. [2020-07-21 01:18:17,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1106 states. [2020-07-21 01:18:17,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1302 transitions. [2020-07-21 01:18:17,419 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1302 transitions. Word has length 136 [2020-07-21 01:18:17,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:18:17,420 INFO L479 AbstractCegarLoop]: Abstraction has 1106 states and 1302 transitions. [2020-07-21 01:18:17,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:18:17,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1302 transitions. [2020-07-21 01:18:17,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-07-21 01:18:17,431 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:18:17,432 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, 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] [2020-07-21 01:18:17,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:17,647 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:18:17,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:18:17,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1737975834, now seen corresponding path program 1 times [2020-07-21 01:18:17,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:18:17,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871371398] [2020-07-21 01:18:17,648 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:17,745 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:18:17,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:18:17,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 29 conjunts are in the unsatisfiable core [2020-07-21 01:18:17,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:18:17,840 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-21 01:18:17,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:18:18,025 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-07-21 01:18:18,073 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:18,074 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:18,079 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 01:18:18,081 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:18,082 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:18,082 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 01:18:18,083 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:18,262 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-21 01:18:18,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871371398] [2020-07-21 01:18:18,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-21 01:18:18,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2020-07-21 01:18:18,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397304673] [2020-07-21 01:18:18,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 01:18:18,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:18:18,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 01:18:18,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:18:18,265 INFO L87 Difference]: Start difference. First operand 1106 states and 1302 transitions. Second operand 5 states. [2020-07-21 01:18:19,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:18:19,103 INFO L93 Difference]: Finished difference Result 3121 states and 3747 transitions. [2020-07-21 01:18:19,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 01:18:19,107 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-07-21 01:18:19,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:18:19,118 INFO L225 Difference]: With dead ends: 3121 [2020-07-21 01:18:19,118 INFO L226 Difference]: Without dead ends: 1944 [2020-07-21 01:18:19,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 324 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-07-21 01:18:19,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2020-07-21 01:18:19,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1944. [2020-07-21 01:18:19,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1944 states. [2020-07-21 01:18:19,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1944 states to 1944 states and 2224 transitions. [2020-07-21 01:18:19,190 INFO L78 Accepts]: Start accepts. Automaton has 1944 states and 2224 transitions. Word has length 166 [2020-07-21 01:18:19,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:18:19,192 INFO L479 AbstractCegarLoop]: Abstraction has 1944 states and 2224 transitions. [2020-07-21 01:18:19,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 01:18:19,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1944 states and 2224 transitions. [2020-07-21 01:18:19,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-07-21 01:18:19,198 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:18:19,198 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:18:19,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:19,411 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:18:19,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:18:19,411 INFO L82 PathProgramCache]: Analyzing trace with hash -673477451, now seen corresponding path program 1 times [2020-07-21 01:18:19,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:18:19,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [191484311] [2020-07-21 01:18:19,412 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:19,515 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:18:19,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:18:19,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-21 01:18:19,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:18:19,548 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 6, 1] term [2020-07-21 01:18:19,548 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:18:19,601 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 76 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-07-21 01:18:19,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:18:19,802 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2020-07-21 01:18:19,857 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:19,859 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:19,860 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 1] term [2020-07-21 01:18:19,860 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:18:19,861 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 01:18:19,861 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:19,862 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:19,863 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:19,864 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:19,864 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:18:19,865 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:19,897 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:18:19,964 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:19,966 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:18:20,166 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 78 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-21 01:18:20,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [191484311] [2020-07-21 01:18:20,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:18:20,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 8 [2020-07-21 01:18:20,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445712745] [2020-07-21 01:18:20,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 01:18:20,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:18:20,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 01:18:20,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-07-21 01:18:20,169 INFO L87 Difference]: Start difference. First operand 1944 states and 2224 transitions. Second operand 8 states. [2020-07-21 01:18:21,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:18:21,202 INFO L93 Difference]: Finished difference Result 4944 states and 5813 transitions. [2020-07-21 01:18:21,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 01:18:21,209 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 183 [2020-07-21 01:18:21,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:18:21,226 INFO L225 Difference]: With dead ends: 4944 [2020-07-21 01:18:21,226 INFO L226 Difference]: Without dead ends: 2927 [2020-07-21 01:18:21,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 359 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-07-21 01:18:21,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2020-07-21 01:18:21,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 2639. [2020-07-21 01:18:21,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2639 states. [2020-07-21 01:18:21,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2639 states to 2639 states and 3047 transitions. [2020-07-21 01:18:21,323 INFO L78 Accepts]: Start accepts. Automaton has 2639 states and 3047 transitions. Word has length 183 [2020-07-21 01:18:21,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:18:21,324 INFO L479 AbstractCegarLoop]: Abstraction has 2639 states and 3047 transitions. [2020-07-21 01:18:21,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 01:18:21,327 INFO L276 IsEmpty]: Start isEmpty. Operand 2639 states and 3047 transitions. [2020-07-21 01:18:21,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-07-21 01:18:21,336 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:18:21,337 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-07-21 01:18:21,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:21,551 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:18:21,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:18:21,551 INFO L82 PathProgramCache]: Analyzing trace with hash -401307189, now seen corresponding path program 1 times [2020-07-21 01:18:21,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:18:21,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [820955952] [2020-07-21 01:18:21,552 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:21,663 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:18:21,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:18:21,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:18:21,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:18:21,722 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-07-21 01:18:21,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:18:21,841 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 141 proven. 15 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-07-21 01:18:21,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [820955952] [2020-07-21 01:18:21,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:18:21,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:18:21,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203504920] [2020-07-21 01:18:21,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:18:21,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:18:21,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:18:21,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:18:21,843 INFO L87 Difference]: Start difference. First operand 2639 states and 3047 transitions. Second operand 7 states. [2020-07-21 01:18:22,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:18:22,983 INFO L93 Difference]: Finished difference Result 5623 states and 6534 transitions. [2020-07-21 01:18:22,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 01:18:22,984 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 217 [2020-07-21 01:18:22,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:18:22,996 INFO L225 Difference]: With dead ends: 5623 [2020-07-21 01:18:22,997 INFO L226 Difference]: Without dead ends: 3050 [2020-07-21 01:18:23,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 431 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-07-21 01:18:23,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3050 states. [2020-07-21 01:18:23,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3050 to 2093. [2020-07-21 01:18:23,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2093 states. [2020-07-21 01:18:23,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2093 states to 2093 states and 2375 transitions. [2020-07-21 01:18:23,061 INFO L78 Accepts]: Start accepts. Automaton has 2093 states and 2375 transitions. Word has length 217 [2020-07-21 01:18:23,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:18:23,061 INFO L479 AbstractCegarLoop]: Abstraction has 2093 states and 2375 transitions. [2020-07-21 01:18:23,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:18:23,062 INFO L276 IsEmpty]: Start isEmpty. Operand 2093 states and 2375 transitions. [2020-07-21 01:18:23,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-07-21 01:18:23,068 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:18:23,068 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-07-21 01:18:23,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:23,283 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:18:23,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:18:23,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1591498529, now seen corresponding path program 1 times [2020-07-21 01:18:23,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:18:23,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805455142] [2020-07-21 01:18:23,284 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:23,419 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:18:23,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:18:23,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 01:18:23,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:18:23,506 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-07-21 01:18:23,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:18:23,727 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-07-21 01:18:23,769 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:23,770 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:23,771 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:23,771 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[4, 2, 1] term [2020-07-21 01:18:23,772 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:23,772 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 01:18:23,772 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:23,911 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-07-21 01:18:23,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805455142] [2020-07-21 01:18:23,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:18:23,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:18:23,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682016257] [2020-07-21 01:18:23,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:18:23,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:18:23,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:18:23,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:18:23,913 INFO L87 Difference]: Start difference. First operand 2093 states and 2375 transitions. Second operand 7 states. [2020-07-21 01:18:25,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:18:25,188 INFO L93 Difference]: Finished difference Result 5504 states and 6329 transitions. [2020-07-21 01:18:25,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 01:18:25,191 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 239 [2020-07-21 01:18:25,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:18:25,212 INFO L225 Difference]: With dead ends: 5504 [2020-07-21 01:18:25,212 INFO L226 Difference]: Without dead ends: 3477 [2020-07-21 01:18:25,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 476 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-07-21 01:18:25,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3477 states. [2020-07-21 01:18:25,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3477 to 3336. [2020-07-21 01:18:25,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3336 states. [2020-07-21 01:18:25,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3336 states to 3336 states and 3793 transitions. [2020-07-21 01:18:25,305 INFO L78 Accepts]: Start accepts. Automaton has 3336 states and 3793 transitions. Word has length 239 [2020-07-21 01:18:25,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:18:25,306 INFO L479 AbstractCegarLoop]: Abstraction has 3336 states and 3793 transitions. [2020-07-21 01:18:25,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:18:25,306 INFO L276 IsEmpty]: Start isEmpty. Operand 3336 states and 3793 transitions. [2020-07-21 01:18:25,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-07-21 01:18:25,317 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:18:25,317 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-07-21 01:18:25,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:25,532 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:18:25,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:18:25,533 INFO L82 PathProgramCache]: Analyzing trace with hash 782782298, now seen corresponding path program 1 times [2020-07-21 01:18:25,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:18:25,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714469438] [2020-07-21 01:18:25,533 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:25,743 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:18:25,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:18:25,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:18:25,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:18:25,858 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 01:18:25,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:18:25,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714469438] [2020-07-21 01:18:25,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:18:25,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:18:25,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113824505] [2020-07-21 01:18:25,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:18:25,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:18:25,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:18:25,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:18:25,861 INFO L87 Difference]: Start difference. First operand 3336 states and 3793 transitions. Second operand 3 states. [2020-07-21 01:18:26,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:18:26,386 INFO L93 Difference]: Finished difference Result 6741 states and 7663 transitions. [2020-07-21 01:18:26,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:18:26,387 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 252 [2020-07-21 01:18:26,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:18:26,404 INFO L225 Difference]: With dead ends: 6741 [2020-07-21 01:18:26,404 INFO L226 Difference]: Without dead ends: 3471 [2020-07-21 01:18:26,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:18:26,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3471 states. [2020-07-21 01:18:26,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3471 to 3336. [2020-07-21 01:18:26,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3336 states. [2020-07-21 01:18:26,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3336 states to 3336 states and 3790 transitions. [2020-07-21 01:18:26,493 INFO L78 Accepts]: Start accepts. Automaton has 3336 states and 3790 transitions. Word has length 252 [2020-07-21 01:18:26,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:18:26,494 INFO L479 AbstractCegarLoop]: Abstraction has 3336 states and 3790 transitions. [2020-07-21 01:18:26,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:18:26,494 INFO L276 IsEmpty]: Start isEmpty. Operand 3336 states and 3790 transitions. [2020-07-21 01:18:26,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-07-21 01:18:26,505 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:18:26,505 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 01:18:26,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:26,719 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:18:26,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:18:26,719 INFO L82 PathProgramCache]: Analyzing trace with hash 456857651, now seen corresponding path program 1 times [2020-07-21 01:18:26,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:18:26,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496386556] [2020-07-21 01:18:26,720 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:26,873 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:18:26,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:18:26,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 01:18:26,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:18:26,949 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 231 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 01:18:26,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:18:27,068 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 01:18:27,069 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:27,234 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 231 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 01:18:27,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496386556] [2020-07-21 01:18:27,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:18:27,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:18:27,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681811295] [2020-07-21 01:18:27,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:18:27,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:18:27,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:18:27,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:18:27,237 INFO L87 Difference]: Start difference. First operand 3336 states and 3790 transitions. Second operand 7 states. [2020-07-21 01:18:28,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:18:28,584 INFO L93 Difference]: Finished difference Result 6753 states and 7673 transitions. [2020-07-21 01:18:28,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 01:18:28,585 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 275 [2020-07-21 01:18:28,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:18:28,597 INFO L225 Difference]: With dead ends: 6753 [2020-07-21 01:18:28,597 INFO L226 Difference]: Without dead ends: 3340 [2020-07-21 01:18:28,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 559 GetRequests, 548 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-07-21 01:18:28,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3340 states. [2020-07-21 01:18:28,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3340 to 3332. [2020-07-21 01:18:28,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3332 states. [2020-07-21 01:18:28,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3332 states to 3332 states and 3634 transitions. [2020-07-21 01:18:28,673 INFO L78 Accepts]: Start accepts. Automaton has 3332 states and 3634 transitions. Word has length 275 [2020-07-21 01:18:28,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:18:28,674 INFO L479 AbstractCegarLoop]: Abstraction has 3332 states and 3634 transitions. [2020-07-21 01:18:28,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:18:28,674 INFO L276 IsEmpty]: Start isEmpty. Operand 3332 states and 3634 transitions. [2020-07-21 01:18:28,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-07-21 01:18:28,686 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:18:28,686 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 01:18:28,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:28,902 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:18:28,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:18:28,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1630512013, now seen corresponding path program 1 times [2020-07-21 01:18:28,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:18:28,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [677241161] [2020-07-21 01:18:28,904 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 [2020-07-21 01:18:29,079 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:18:29,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:18:29,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:18:29,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:18:29,173 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 328 proven. 2 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2020-07-21 01:18:29,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:18:29,299 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 242 proven. 14 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2020-07-21 01:18:29,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [677241161] [2020-07-21 01:18:29,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:18:29,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-07-21 01:18:29,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168678059] [2020-07-21 01:18:29,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 01:18:29,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:18:29,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 01:18:29,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-07-21 01:18:29,302 INFO L87 Difference]: Start difference. First operand 3332 states and 3634 transitions. Second operand 8 states. [2020-07-21 01:18:30,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:18:30,755 INFO L93 Difference]: Finished difference Result 7181 states and 7813 transitions. [2020-07-21 01:18:30,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 01:18:30,756 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 302 [2020-07-21 01:18:30,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:18:30,771 INFO L225 Difference]: With dead ends: 7181 [2020-07-21 01:18:30,771 INFO L226 Difference]: Without dead ends: 3089 [2020-07-21 01:18:30,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 601 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-07-21 01:18:30,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3089 states. [2020-07-21 01:18:30,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3089 to 1940. [2020-07-21 01:18:30,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1940 states. [2020-07-21 01:18:30,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1940 states to 1940 states and 2072 transitions. [2020-07-21 01:18:30,839 INFO L78 Accepts]: Start accepts. Automaton has 1940 states and 2072 transitions. Word has length 302 [2020-07-21 01:18:30,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:18:30,840 INFO L479 AbstractCegarLoop]: Abstraction has 1940 states and 2072 transitions. [2020-07-21 01:18:30,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 01:18:30,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1940 states and 2072 transitions. [2020-07-21 01:18:30,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-07-21 01:18:30,848 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:18:30,849 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:18:31,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:31,064 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:18:31,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:18:31,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1500128134, now seen corresponding path program 1 times [2020-07-21 01:18:31,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:18:31,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881211664] [2020-07-21 01:18:31,066 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:31,248 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:18:31,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:18:31,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-21 01:18:31,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:18:31,299 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 1] term [2020-07-21 01:18:31,299 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:18:31,373 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 362 proven. 6 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 01:18:31,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:18:31,494 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:31,495 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:18:31,495 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:31,521 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:18:31,583 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:31,604 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:31,734 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 341 proven. 27 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 01:18:31,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [881211664] [2020-07-21 01:18:31,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:18:31,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2020-07-21 01:18:31,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558313600] [2020-07-21 01:18:31,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-21 01:18:31,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:18:31,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-21 01:18:31,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-07-21 01:18:31,737 INFO L87 Difference]: Start difference. First operand 1940 states and 2072 transitions. Second operand 12 states. [2020-07-21 01:18:33,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:18:33,966 INFO L93 Difference]: Finished difference Result 3989 states and 4304 transitions. [2020-07-21 01:18:33,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-21 01:18:33,967 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 304 [2020-07-21 01:18:33,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:18:33,968 INFO L225 Difference]: With dead ends: 3989 [2020-07-21 01:18:33,968 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 01:18:33,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 636 GetRequests, 610 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=201, Invalid=501, Unknown=0, NotChecked=0, Total=702 [2020-07-21 01:18:33,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 01:18:33,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 01:18:33,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 01:18:33,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 01:18:33,982 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 304 [2020-07-21 01:18:33,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:18:33,982 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 01:18:33,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-21 01:18:33,983 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 01:18:33,983 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 01:18:34,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:34,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 01:18:35,185 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 185 [2020-07-21 01:18:35,400 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 175 [2020-07-21 01:18:38,577 WARN L193 SmtUtils]: Spent 3.04 s on a formula simplification. DAG size of input: 294 DAG size of output: 113 [2020-07-21 01:18:39,845 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 201 DAG size of output: 68 [2020-07-21 01:18:41,031 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 191 DAG size of output: 68 [2020-07-21 01:18:41,036 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 01:18:41,036 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)|) (= ~a17~0 |old(~a17~0)|) (<= |old(~a16~0)| ~a16~0) (= ~a20~0 |old(~a20~0)|) (= ~a21~0 |old(~a21~0)|)) [2020-07-21 01:18:41,037 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 01:18:41,037 INFO L268 CegarLoopResult]: For program point L333(lines 333 390) no Hoare annotation was computed. [2020-07-21 01:18:41,037 INFO L268 CegarLoopResult]: For program point L102(lines 102 390) no Hoare annotation was computed. [2020-07-21 01:18:41,037 INFO L268 CegarLoopResult]: For program point L565-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,037 INFO L268 CegarLoopResult]: For program point L532-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,037 INFO L268 CegarLoopResult]: For program point L499-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,038 INFO L268 CegarLoopResult]: For program point L466-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,038 INFO L268 CegarLoopResult]: For program point L433-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,038 INFO L268 CegarLoopResult]: For program point L400-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,038 INFO L268 CegarLoopResult]: For program point L268(lines 268 390) no Hoare annotation was computed. [2020-07-21 01:18:41,038 INFO L268 CegarLoopResult]: For program point L136(lines 136 390) no Hoare annotation was computed. [2020-07-21 01:18:41,038 INFO L268 CegarLoopResult]: For program point L566(line 566) no Hoare annotation was computed. [2020-07-21 01:18:41,038 INFO L268 CegarLoopResult]: For program point L533(line 533) no Hoare annotation was computed. [2020-07-21 01:18:41,039 INFO L268 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2020-07-21 01:18:41,039 INFO L268 CegarLoopResult]: For program point L467(line 467) no Hoare annotation was computed. [2020-07-21 01:18:41,039 INFO L268 CegarLoopResult]: For program point L434(line 434) no Hoare annotation was computed. [2020-07-21 01:18:41,039 INFO L268 CegarLoopResult]: For program point L401(line 401) no Hoare annotation was computed. [2020-07-21 01:18:41,039 INFO L268 CegarLoopResult]: For program point L203(lines 203 390) no Hoare annotation was computed. [2020-07-21 01:18:41,039 INFO L268 CegarLoopResult]: For program point L72(lines 72 390) no Hoare annotation was computed. [2020-07-21 01:18:41,039 INFO L268 CegarLoopResult]: For program point L568-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,040 INFO L268 CegarLoopResult]: For program point L535-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,040 INFO L268 CegarLoopResult]: For program point L502-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,040 INFO L268 CegarLoopResult]: For program point L469-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,040 INFO L268 CegarLoopResult]: For program point L436-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,040 INFO L268 CegarLoopResult]: For program point L403-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,040 INFO L268 CegarLoopResult]: For program point L337(lines 337 390) no Hoare annotation was computed. [2020-07-21 01:18:41,040 INFO L268 CegarLoopResult]: For program point L238(lines 238 390) no Hoare annotation was computed. [2020-07-21 01:18:41,040 INFO L268 CegarLoopResult]: For program point L569(line 569) no Hoare annotation was computed. [2020-07-21 01:18:41,040 INFO L268 CegarLoopResult]: For program point L536(line 536) no Hoare annotation was computed. [2020-07-21 01:18:41,040 INFO L268 CegarLoopResult]: For program point L503(line 503) no Hoare annotation was computed. [2020-07-21 01:18:41,041 INFO L268 CegarLoopResult]: For program point L470(line 470) no Hoare annotation was computed. [2020-07-21 01:18:41,041 INFO L268 CegarLoopResult]: For program point L437(line 437) no Hoare annotation was computed. [2020-07-21 01:18:41,041 INFO L268 CegarLoopResult]: For program point L404(line 404) no Hoare annotation was computed. [2020-07-21 01:18:41,041 INFO L268 CegarLoopResult]: For program point L173(lines 173 390) no Hoare annotation was computed. [2020-07-21 01:18:41,041 INFO L268 CegarLoopResult]: For program point L140(lines 140 390) no Hoare annotation was computed. [2020-07-21 01:18:41,041 INFO L268 CegarLoopResult]: For program point L372(lines 372 390) no Hoare annotation was computed. [2020-07-21 01:18:41,041 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 488) no Hoare annotation was computed. [2020-07-21 01:18:41,041 INFO L268 CegarLoopResult]: For program point L306(lines 306 390) no Hoare annotation was computed. [2020-07-21 01:18:41,041 INFO L268 CegarLoopResult]: For program point L273(lines 273 390) no Hoare annotation was computed. [2020-07-21 01:18:41,041 INFO L268 CegarLoopResult]: For program point L108(lines 108 390) no Hoare annotation was computed. [2020-07-21 01:18:41,042 INFO L268 CegarLoopResult]: For program point L571-1(lines 571 573) no Hoare annotation was computed. [2020-07-21 01:18:41,042 INFO L268 CegarLoopResult]: For program point L538-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,042 INFO L268 CegarLoopResult]: For program point L505-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,042 INFO L268 CegarLoopResult]: For program point L472-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,042 INFO L268 CegarLoopResult]: For program point L439-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,042 INFO L268 CegarLoopResult]: For program point L406-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,042 INFO L268 CegarLoopResult]: For program point L208(lines 208 390) no Hoare annotation was computed. [2020-07-21 01:18:41,042 INFO L268 CegarLoopResult]: For program point L43(lines 43 390) no Hoare annotation was computed. [2020-07-21 01:18:41,042 INFO L268 CegarLoopResult]: For program point L572(line 572) no Hoare annotation was computed. [2020-07-21 01:18:41,042 INFO L268 CegarLoopResult]: For program point L539(line 539) no Hoare annotation was computed. [2020-07-21 01:18:41,043 INFO L268 CegarLoopResult]: For program point L506(line 506) no Hoare annotation was computed. [2020-07-21 01:18:41,043 INFO L268 CegarLoopResult]: For program point L473(line 473) no Hoare annotation was computed. [2020-07-21 01:18:41,043 INFO L268 CegarLoopResult]: For program point L440(line 440) no Hoare annotation was computed. [2020-07-21 01:18:41,043 INFO L268 CegarLoopResult]: For program point L407(line 407) no Hoare annotation was computed. [2020-07-21 01:18:41,043 INFO L268 CegarLoopResult]: For program point L144(lines 144 390) no Hoare annotation was computed. [2020-07-21 01:18:41,043 INFO L268 CegarLoopResult]: For program point L541-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,043 INFO L268 CegarLoopResult]: For program point L508-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,043 INFO L268 CegarLoopResult]: For program point L475-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,043 INFO L268 CegarLoopResult]: For program point L442-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,043 INFO L268 CegarLoopResult]: For program point L409-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,043 INFO L268 CegarLoopResult]: For program point L178(lines 178 390) no Hoare annotation was computed. [2020-07-21 01:18:41,043 INFO L268 CegarLoopResult]: For program point L542(line 542) no Hoare annotation was computed. [2020-07-21 01:18:41,044 INFO L268 CegarLoopResult]: For program point L509(line 509) no Hoare annotation was computed. [2020-07-21 01:18:41,044 INFO L268 CegarLoopResult]: For program point L476(line 476) no Hoare annotation was computed. [2020-07-21 01:18:41,044 INFO L268 CegarLoopResult]: For program point L443(line 443) no Hoare annotation was computed. [2020-07-21 01:18:41,044 INFO L268 CegarLoopResult]: For program point L410(line 410) no Hoare annotation was computed. [2020-07-21 01:18:41,044 INFO L268 CegarLoopResult]: For program point L377(lines 377 390) no Hoare annotation was computed. [2020-07-21 01:18:41,044 INFO L268 CegarLoopResult]: For program point L278(lines 278 390) no Hoare annotation was computed. [2020-07-21 01:18:41,044 INFO L268 CegarLoopResult]: For program point L245(lines 245 390) no Hoare annotation was computed. [2020-07-21 01:18:41,044 INFO L268 CegarLoopResult]: For program point L80(lines 80 390) no Hoare annotation was computed. [2020-07-21 01:18:41,045 INFO L268 CegarLoopResult]: For program point L345(lines 345 390) no Hoare annotation was computed. [2020-07-21 01:18:41,045 INFO L268 CegarLoopResult]: For program point L312(lines 312 390) no Hoare annotation was computed. [2020-07-21 01:18:41,045 INFO L268 CegarLoopResult]: For program point L114(lines 114 390) no Hoare annotation was computed. [2020-07-21 01:18:41,045 INFO L268 CegarLoopResult]: For program point L544-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,045 INFO L268 CegarLoopResult]: For program point L511-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,045 INFO L268 CegarLoopResult]: For program point L478-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,045 INFO L268 CegarLoopResult]: For program point L445-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,045 INFO L268 CegarLoopResult]: For program point L412-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,045 INFO L268 CegarLoopResult]: For program point L214(lines 214 390) no Hoare annotation was computed. [2020-07-21 01:18:41,046 INFO L268 CegarLoopResult]: For program point L148(lines 148 390) no Hoare annotation was computed. [2020-07-21 01:18:41,046 INFO L268 CegarLoopResult]: For program point L49(lines 49 390) no Hoare annotation was computed. [2020-07-21 01:18:41,046 INFO L268 CegarLoopResult]: For program point L545(line 545) no Hoare annotation was computed. [2020-07-21 01:18:41,046 INFO L268 CegarLoopResult]: For program point L512(line 512) no Hoare annotation was computed. [2020-07-21 01:18:41,046 INFO L268 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2020-07-21 01:18:41,046 INFO L268 CegarLoopResult]: For program point L446(line 446) no Hoare annotation was computed. [2020-07-21 01:18:41,046 INFO L268 CegarLoopResult]: For program point L413(line 413) no Hoare annotation was computed. [2020-07-21 01:18:41,046 INFO L268 CegarLoopResult]: For program point L84(lines 84 390) no Hoare annotation was computed. [2020-07-21 01:18:41,046 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,047 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,047 INFO L268 CegarLoopResult]: For program point L547-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,047 INFO L268 CegarLoopResult]: For program point L514-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,047 INFO L268 CegarLoopResult]: For program point L481-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,047 INFO L268 CegarLoopResult]: For program point L448-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,047 INFO L268 CegarLoopResult]: For program point L382(lines 382 390) no Hoare annotation was computed. [2020-07-21 01:18:41,047 INFO L268 CegarLoopResult]: For program point L415-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,047 INFO L268 CegarLoopResult]: For program point L316(lines 316 390) no Hoare annotation was computed. [2020-07-21 01:18:41,047 INFO L268 CegarLoopResult]: For program point L250(lines 250 390) no Hoare annotation was computed. [2020-07-21 01:18:41,047 INFO L268 CegarLoopResult]: For program point L548(line 548) no Hoare annotation was computed. [2020-07-21 01:18:41,047 INFO L268 CegarLoopResult]: For program point L515(line 515) no Hoare annotation was computed. [2020-07-21 01:18:41,047 INFO L268 CegarLoopResult]: For program point L482(line 482) no Hoare annotation was computed. [2020-07-21 01:18:41,047 INFO L268 CegarLoopResult]: For program point L449(line 449) no Hoare annotation was computed. [2020-07-21 01:18:41,047 INFO L268 CegarLoopResult]: For program point L416(line 416) no Hoare annotation was computed. [2020-07-21 01:18:41,048 INFO L268 CegarLoopResult]: For program point L218(lines 218 390) no Hoare annotation was computed. [2020-07-21 01:18:41,048 INFO L268 CegarLoopResult]: For program point L152(lines 152 390) no Hoare annotation was computed. [2020-07-21 01:18:41,048 INFO L268 CegarLoopResult]: For program point L119(lines 119 390) no Hoare annotation was computed. [2020-07-21 01:18:41,048 INFO L268 CegarLoopResult]: For program point L318(lines 318 390) no Hoare annotation was computed. [2020-07-21 01:18:41,048 INFO L268 CegarLoopResult]: For program point L186(lines 186 390) no Hoare annotation was computed. [2020-07-21 01:18:41,048 INFO L268 CegarLoopResult]: For program point L54(lines 54 390) no Hoare annotation was computed. [2020-07-21 01:18:41,048 INFO L268 CegarLoopResult]: For program point L550-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,048 INFO L268 CegarLoopResult]: For program point L517-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,048 INFO L268 CegarLoopResult]: For program point L484-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,048 INFO L268 CegarLoopResult]: For program point L451-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,048 INFO L268 CegarLoopResult]: For program point L418-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,049 INFO L268 CegarLoopResult]: For program point L286(lines 286 390) no Hoare annotation was computed. [2020-07-21 01:18:41,049 INFO L268 CegarLoopResult]: For program point L551(line 551) no Hoare annotation was computed. [2020-07-21 01:18:41,049 INFO L268 CegarLoopResult]: For program point L518(line 518) no Hoare annotation was computed. [2020-07-21 01:18:41,049 INFO L268 CegarLoopResult]: For program point L485(line 485) no Hoare annotation was computed. [2020-07-21 01:18:41,049 INFO L268 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2020-07-21 01:18:41,049 INFO L268 CegarLoopResult]: For program point L419(line 419) no Hoare annotation was computed. [2020-07-21 01:18:41,049 INFO L268 CegarLoopResult]: For program point L353(lines 353 390) no Hoare annotation was computed. [2020-07-21 01:18:41,049 INFO L268 CegarLoopResult]: For program point L189(lines 189 390) no Hoare annotation was computed. [2020-07-21 01:18:41,049 INFO L268 CegarLoopResult]: For program point L553-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,050 INFO L268 CegarLoopResult]: For program point L520-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,050 INFO L268 CegarLoopResult]: For program point L487-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,050 INFO L268 CegarLoopResult]: For program point L454-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,050 INFO L268 CegarLoopResult]: For program point L421-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,050 INFO L268 CegarLoopResult]: For program point L355(lines 355 390) no Hoare annotation was computed. [2020-07-21 01:18:41,050 INFO L268 CegarLoopResult]: For program point L256(lines 256 390) no Hoare annotation was computed. [2020-07-21 01:18:41,050 INFO L268 CegarLoopResult]: For program point L223(lines 223 390) no Hoare annotation was computed. [2020-07-21 01:18:41,050 INFO L268 CegarLoopResult]: For program point L124(lines 124 390) no Hoare annotation was computed. [2020-07-21 01:18:41,050 INFO L268 CegarLoopResult]: For program point L554(line 554) no Hoare annotation was computed. [2020-07-21 01:18:41,050 INFO L268 CegarLoopResult]: For program point L521(line 521) no Hoare annotation was computed. [2020-07-21 01:18:41,050 INFO L268 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2020-07-21 01:18:41,050 INFO L268 CegarLoopResult]: For program point L455(line 455) no Hoare annotation was computed. [2020-07-21 01:18:41,051 INFO L268 CegarLoopResult]: For program point L422(line 422) no Hoare annotation was computed. [2020-07-21 01:18:41,051 INFO L268 CegarLoopResult]: For program point L92(lines 92 390) no Hoare annotation was computed. [2020-07-21 01:18:41,051 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 30 575) the Hoare annotation is: (let ((.cse14 (= 1 |old(~a21~0)|)) (.cse16 (= 1 |old(~a20~0)|))) (let ((.cse0 (not .cse16)) (.cse10 (not .cse14)) (.cse13 (= 1 |old(~a17~0)|)) (.cse26 (<= ~a16~0 |old(~a16~0)|)) (.cse20 (<= ~a8~0 |old(~a8~0)|)) (.cse21 (= ~a7~0 |old(~a7~0)|)) (.cse22 (= ~a17~0 |old(~a17~0)|)) (.cse28 (<= |old(~a16~0)| ~a16~0)) (.cse23 (= ~a20~0 |old(~a20~0)|)) (.cse24 (= ~a21~0 |old(~a21~0)|))) (let ((.cse1 (and .cse26 .cse20 .cse21 .cse22 .cse28 .cse23 .cse24)) (.cse15 (not (<= 6 |old(~a16~0)|))) (.cse17 (and .cse20 .cse26 .cse21 .cse22 .cse28 .cse23 .cse24)) (.cse3 (not (<= |old(~a16~0)| 4))) (.cse2 (not (<= |old(~a8~0)| 13))) (.cse4 (not (= 15 |old(~a8~0)|))) (.cse7 (not (< 4 |old(~a16~0)|))) (.cse19 (not (< |old(~a16~0)| 6))) (.cse8 (not .cse13)) (.cse9 (and (not (= 6 |calculate_output_#in~input|)) (not (= 1 |calculate_output_#in~input|)) (not (= 2 |calculate_output_#in~input|)) (not (= 4 |calculate_output_#in~input|)) (not (= 5 |calculate_output_#in~input|)) (not (= 3 |calculate_output_#in~input|)))) (.cse11 (= 15 ~a8~0)) (.cse6 (not (<= |old(~a16~0)| 5))) (.cse25 (not (= 1 |old(~a7~0)|))) (.cse18 (and (or .cse0 .cse10) (or .cse16 .cse14))) (.cse27 (= 1 ~a7~0)) (.cse5 (not (<= |old(~a7~0)| 0))) (.cse12 (not (= 8 ~a12~0)))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse4 .cse5 .cse6 .cse7 (not (<= |old(~a20~0)| 0)) .cse8 .cse9 .cse10 .cse11 .cse12) (or .cse0 .cse1 (and (or .cse8 .cse10) (or .cse13 .cse14)) .cse2 .cse15) (or .cse5 (and (or .cse0 .cse8) (or .cse16 .cse13)) .cse17 .cse15 .cse12) (or .cse2 .cse18 .cse17 .cse3) (or .cse0 .cse19 .cse2 .cse7 .cse8 (and .cse20 .cse21 .cse22 (<= ~a16~0 5) (< 4 ~a16~0) .cse23 .cse24)) (or .cse4 .cse5 .cse7 .cse19 .cse8 .cse18 .cse9 .cse10 .cse11 .cse12) (or .cse25 (and .cse26 .cse27 .cse24) .cse6 .cse10) (or .cse25 .cse18 .cse10 (and .cse27 (= 1 ~a20~0) .cse24)) (or (and .cse26 .cse20 .cse21 .cse22 .cse28 (= 1 ~a21~0) .cse23) .cse5 .cse10 .cse12))))) [2020-07-21 01:18:41,051 INFO L268 CegarLoopResult]: For program point L324(lines 324 390) no Hoare annotation was computed. [2020-07-21 01:18:41,051 INFO L268 CegarLoopResult]: For program point L556-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,051 INFO L268 CegarLoopResult]: For program point L523-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,051 INFO L268 CegarLoopResult]: For program point L490-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,051 INFO L268 CegarLoopResult]: For program point L457-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,051 INFO L268 CegarLoopResult]: For program point L391(lines 391 393) no Hoare annotation was computed. [2020-07-21 01:18:41,052 INFO L268 CegarLoopResult]: For program point L424-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,052 INFO L268 CegarLoopResult]: For program point L391-2(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,052 INFO L268 CegarLoopResult]: For program point L292(lines 292 390) no Hoare annotation was computed. [2020-07-21 01:18:41,052 INFO L268 CegarLoopResult]: For program point L160(lines 160 390) no Hoare annotation was computed. [2020-07-21 01:18:41,052 INFO L268 CegarLoopResult]: For program point L557(line 557) no Hoare annotation was computed. [2020-07-21 01:18:41,052 INFO L268 CegarLoopResult]: For program point L524(line 524) no Hoare annotation was computed. [2020-07-21 01:18:41,052 INFO L268 CegarLoopResult]: For program point L491(line 491) no Hoare annotation was computed. [2020-07-21 01:18:41,052 INFO L268 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2020-07-21 01:18:41,052 INFO L268 CegarLoopResult]: For program point L425(line 425) no Hoare annotation was computed. [2020-07-21 01:18:41,053 INFO L268 CegarLoopResult]: For program point L392(line 392) no Hoare annotation was computed. [2020-07-21 01:18:41,053 INFO L268 CegarLoopResult]: For program point L194(lines 194 390) no Hoare annotation was computed. [2020-07-21 01:18:41,053 INFO L268 CegarLoopResult]: For program point L62(lines 62 390) no Hoare annotation was computed. [2020-07-21 01:18:41,053 INFO L268 CegarLoopResult]: For program point L261(lines 261 390) no Hoare annotation was computed. [2020-07-21 01:18:41,053 INFO L268 CegarLoopResult]: For program point L129(lines 129 390) no Hoare annotation was computed. [2020-07-21 01:18:41,053 INFO L268 CegarLoopResult]: For program point L559-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,053 INFO L268 CegarLoopResult]: For program point L526-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,053 INFO L268 CegarLoopResult]: For program point L493-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,053 INFO L268 CegarLoopResult]: For program point L460-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,054 INFO L268 CegarLoopResult]: For program point L427-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,054 INFO L268 CegarLoopResult]: For program point L361(lines 361 390) no Hoare annotation was computed. [2020-07-21 01:18:41,054 INFO L268 CegarLoopResult]: For program point L394-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,054 INFO L268 CegarLoopResult]: For program point L97(lines 97 390) no Hoare annotation was computed. [2020-07-21 01:18:41,054 INFO L268 CegarLoopResult]: For program point L31(lines 31 390) no Hoare annotation was computed. [2020-07-21 01:18:41,054 INFO L268 CegarLoopResult]: For program point L560(line 560) no Hoare annotation was computed. [2020-07-21 01:18:41,054 INFO L268 CegarLoopResult]: For program point L527(line 527) no Hoare annotation was computed. [2020-07-21 01:18:41,054 INFO L268 CegarLoopResult]: For program point L494(line 494) no Hoare annotation was computed. [2020-07-21 01:18:41,054 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-21 01:18:41,054 INFO L268 CegarLoopResult]: For program point L428(line 428) no Hoare annotation was computed. [2020-07-21 01:18:41,055 INFO L268 CegarLoopResult]: For program point L395(line 395) no Hoare annotation was computed. [2020-07-21 01:18:41,055 INFO L268 CegarLoopResult]: For program point L329(lines 329 390) no Hoare annotation was computed. [2020-07-21 01:18:41,055 INFO L268 CegarLoopResult]: For program point L197(lines 197 390) no Hoare annotation was computed. [2020-07-21 01:18:41,055 INFO L268 CegarLoopResult]: For program point L65(lines 65 390) no Hoare annotation was computed. [2020-07-21 01:18:41,055 INFO L268 CegarLoopResult]: For program point L363(lines 363 390) no Hoare annotation was computed. [2020-07-21 01:18:41,055 INFO L268 CegarLoopResult]: For program point L231(lines 231 390) no Hoare annotation was computed. [2020-07-21 01:18:41,055 INFO L268 CegarLoopResult]: For program point L165(lines 165 390) no Hoare annotation was computed. [2020-07-21 01:18:41,055 INFO L268 CegarLoopResult]: For program point L562-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,055 INFO L268 CegarLoopResult]: For program point L529-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,055 INFO L268 CegarLoopResult]: For program point L496-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,056 INFO L268 CegarLoopResult]: For program point L463-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,056 INFO L268 CegarLoopResult]: For program point L430-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,056 INFO L268 CegarLoopResult]: For program point L397-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:41,056 INFO L268 CegarLoopResult]: For program point L265(lines 265 390) no Hoare annotation was computed. [2020-07-21 01:18:41,056 INFO L268 CegarLoopResult]: For program point L563(line 563) no Hoare annotation was computed. [2020-07-21 01:18:41,056 INFO L268 CegarLoopResult]: For program point L530(line 530) no Hoare annotation was computed. [2020-07-21 01:18:41,056 INFO L268 CegarLoopResult]: For program point L497(line 497) no Hoare annotation was computed. [2020-07-21 01:18:41,056 INFO L268 CegarLoopResult]: For program point L464(line 464) no Hoare annotation was computed. [2020-07-21 01:18:41,056 INFO L268 CegarLoopResult]: For program point L431(line 431) no Hoare annotation was computed. [2020-07-21 01:18:41,056 INFO L268 CegarLoopResult]: For program point L398(line 398) no Hoare annotation was computed. [2020-07-21 01:18:41,057 INFO L268 CegarLoopResult]: For program point L365(lines 365 390) no Hoare annotation was computed. [2020-07-21 01:18:41,057 INFO L268 CegarLoopResult]: For program point L299(lines 299 390) no Hoare annotation was computed. [2020-07-21 01:18:41,057 INFO L268 CegarLoopResult]: For program point L35(lines 35 390) no Hoare annotation was computed. [2020-07-21 01:18:41,057 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 01:18:41,057 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a7~0 0) (= 1 ~a17~0) (= 1 ~a21~0) (= 1 ~a20~0) (= 15 ~a8~0) (= 5 ~a16~0) (= 8 ~a12~0)) [2020-07-21 01:18:41,057 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 01:18:41,057 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 01:18:41,057 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 (= ~a7~0 |old(~a7~0)|) (= ~a17~0 |old(~a17~0)|) (= 1 ~a21~0) (= ~a20~0 |old(~a20~0)|) (= 15 ~a8~0) (= 5 ~a16~0)) (not (<= |old(~a7~0)| 0)) (not (< |old(~a16~0)| 6)) (not (< 4 |old(~a16~0)|)) (not (= 1 |old(~a17~0)|)) (not (= 1 |old(~a21~0)|)) (not (= 8 ~a12~0))) [2020-07-21 01:18:41,057 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 577 594) no Hoare annotation was computed. [2020-07-21 01:18:41,058 INFO L264 CegarLoopResult]: At program point L591(line 591) the Hoare annotation is: (let ((.cse3 (= 1 ~a21~0)) (.cse6 (= 1 ~a20~0))) (let ((.cse10 (not .cse6)) (.cse1 (not .cse3)) (.cse2 (= 1 ~a17~0))) (let ((.cse7 (<= ~a16~0 4)) (.cse0 (not .cse2)) (.cse5 (<= 6 ~a16~0)) (.cse9 (<= ~a7~0 0)) (.cse8 (or (and .cse10 .cse1) (and .cse3 .cse6))) (.cse4 (<= ~a8~0 13)) (.cse11 (= 1 ~a7~0)) (.cse12 (<= ~a16~0 5))) (or (not (= 15 |old(~a8~0)|)) (and (or (and .cse0 .cse1) (and .cse2 .cse3)) .cse4 .cse5 .cse6) (not (<= |old(~a7~0)| 0)) (not (< 4 |old(~a16~0)|)) (not (= 1 |old(~a17~0)|)) (and .cse4 .cse7 .cse8) (and .cse9 .cse3) (and .cse4 .cse6 .cse7) (and (or (and .cse10 .cse0) (and .cse2 .cse6)) .cse5 .cse9) (not (= 1 |old(~a20~0)|)) (and .cse11 .cse3 .cse8) (not (< |old(~a16~0)| 6)) (and .cse4 .cse2 .cse12 .cse6) (and .cse11 .cse12 .cse3) (not (= 1 |old(~a21~0)|)) (not (= 8 ~a12~0)))))) [2020-07-21 01:18:41,058 INFO L268 CegarLoopResult]: For program point L591-1(line 591) no Hoare annotation was computed. [2020-07-21 01:18:41,058 INFO L268 CegarLoopResult]: For program point L588(line 588) no Hoare annotation was computed. [2020-07-21 01:18:41,058 INFO L264 CegarLoopResult]: At program point L583-2(lines 583 593) the Hoare annotation is: (let ((.cse3 (= 1 ~a21~0)) (.cse6 (= 1 ~a20~0))) (let ((.cse10 (not .cse6)) (.cse1 (not .cse3)) (.cse2 (= 1 ~a17~0))) (let ((.cse7 (<= ~a16~0 4)) (.cse0 (not .cse2)) (.cse5 (<= 6 ~a16~0)) (.cse9 (<= ~a7~0 0)) (.cse8 (or (and .cse10 .cse1) (and .cse3 .cse6))) (.cse4 (<= ~a8~0 13)) (.cse11 (= 1 ~a7~0)) (.cse12 (<= ~a16~0 5))) (or (not (= 15 |old(~a8~0)|)) (and (or (and .cse0 .cse1) (and .cse2 .cse3)) .cse4 .cse5 .cse6) (not (<= |old(~a7~0)| 0)) (not (< 4 |old(~a16~0)|)) (not (= 1 |old(~a17~0)|)) (and .cse4 .cse7 .cse8) (and .cse9 .cse3) (and .cse4 .cse6 .cse7) (and (or (and .cse10 .cse0) (and .cse2 .cse6)) .cse5 .cse9) (not (= 1 |old(~a20~0)|)) (and .cse11 .cse3 .cse8) (not (< |old(~a16~0)| 6)) (and .cse4 .cse2 .cse12 .cse6) (and .cse11 .cse12 .cse3) (not (= 1 |old(~a21~0)|)) (not (= 8 ~a12~0)))))) [2020-07-21 01:18:41,058 INFO L268 CegarLoopResult]: For program point L583-3(lines 577 594) no Hoare annotation was computed. [2020-07-21 01:18:41,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:18:41 BoogieIcfgContainer [2020-07-21 01:18:41,090 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 01:18:41,092 INFO L168 Benchmark]: Toolchain (without parser) took 40701.85 ms. Allocated memory was 146.3 MB in the beginning and 646.4 MB in the end (delta: 500.2 MB). Free memory was 102.3 MB in the beginning and 320.0 MB in the end (delta: -217.8 MB). Peak memory consumption was 513.0 MB. Max. memory is 7.1 GB. [2020-07-21 01:18:41,092 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 146.3 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 01:18:41,093 INFO L168 Benchmark]: CACSL2BoogieTranslator took 853.89 ms. Allocated memory was 146.3 MB in the beginning and 206.0 MB in the end (delta: 59.8 MB). Free memory was 101.8 MB in the beginning and 172.0 MB in the end (delta: -70.2 MB). Peak memory consumption was 31.8 MB. Max. memory is 7.1 GB. [2020-07-21 01:18:41,094 INFO L168 Benchmark]: Boogie Preprocessor took 100.29 ms. Allocated memory is still 206.0 MB. Free memory was 172.0 MB in the beginning and 167.2 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2020-07-21 01:18:41,094 INFO L168 Benchmark]: RCFGBuilder took 1211.49 ms. Allocated memory was 206.0 MB in the beginning and 240.1 MB in the end (delta: 34.1 MB). Free memory was 167.2 MB in the beginning and 181.4 MB in the end (delta: -14.2 MB). Peak memory consumption was 81.1 MB. Max. memory is 7.1 GB. [2020-07-21 01:18:41,095 INFO L168 Benchmark]: TraceAbstraction took 38529.61 ms. Allocated memory was 240.1 MB in the beginning and 646.4 MB in the end (delta: 406.3 MB). Free memory was 181.4 MB in the beginning and 320.0 MB in the end (delta: -138.7 MB). Peak memory consumption was 498.2 MB. Max. memory is 7.1 GB. [2020-07-21 01:18:41,098 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 146.3 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 853.89 ms. Allocated memory was 146.3 MB in the beginning and 206.0 MB in the end (delta: 59.8 MB). Free memory was 101.8 MB in the beginning and 172.0 MB in the end (delta: -70.2 MB). Peak memory consumption was 31.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 100.29 ms. Allocated memory is still 206.0 MB. Free memory was 172.0 MB in the beginning and 167.2 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1211.49 ms. Allocated memory was 206.0 MB in the beginning and 240.1 MB in the end (delta: 34.1 MB). Free memory was 167.2 MB in the beginning and 181.4 MB in the end (delta: -14.2 MB). Peak memory consumption was 81.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 38529.61 ms. Allocated memory was 240.1 MB in the beginning and 646.4 MB in the end (delta: 406.3 MB). Free memory was 181.4 MB in the beginning and 320.0 MB in the end (delta: -138.7 MB). Peak memory consumption was 498.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 488]: 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: ((((((((((((((!(15 == \old(a8)) || (((((!(1 == a17) && !(1 == a21)) || (1 == a17 && 1 == a21)) && a8 <= 13) && 6 <= a16) && 1 == a20)) || !(\old(a7) <= 0)) || !(4 < \old(a16))) || !(1 == \old(a17))) || ((a8 <= 13 && a16 <= 4) && ((!(1 == a20) && !(1 == a21)) || (1 == a21 && 1 == a20)))) || (a7 <= 0 && 1 == a21)) || ((a8 <= 13 && 1 == a20) && a16 <= 4)) || ((((!(1 == a20) && !(1 == a17)) || (1 == a17 && 1 == a20)) && 6 <= a16) && a7 <= 0)) || !(1 == \old(a20))) || ((1 == a7 && 1 == a21) && ((!(1 == a20) && !(1 == a21)) || (1 == a21 && 1 == a20)))) || !(\old(a16) < 6)) || (((a8 <= 13 && 1 == a17) && a16 <= 5) && 1 == a20)) || ((1 == a7 && a16 <= 5) && 1 == a21)) || !(1 == \old(a21))) || !(8 == a12) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 31.5s, OverallIterations: 12, TraceHistogramMax: 8, AutomataDifference: 18.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 6.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 662 SDtfs, 7455 SDslu, 647 SDs, 0 SdLazy, 12666 SolverSat, 1558 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4455 GetRequests, 4294 SyntacticMatches, 12 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 718 ImplicationChecksByTransitivity, 6.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3336occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 12 MinimizatonAttempts, 2775 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 194 PreInvPairs, 260 NumberOfFragments, 901 HoareAnnotationTreeSize, 194 FomulaSimplifications, 18144 FormulaSimplificationTreeSizeReduction, 1.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 39410 FormulaSimplificationTreeSizeReductionInter, 5.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 7.5s InterpolantComputationTime, 2423 NumberOfCodeBlocks, 1710 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 4342 ConstructedInterpolants, 0 QuantifiedInterpolants, 4143899 SizeOfPredicates, 67 NumberOfNonLiveVariables, 5617 ConjunctsInSsa, 230 ConjunctsInUnsatCore, 21 InterpolantComputations, 4 PerfectInterpolantSequences, 3929/4032 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...