/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/psyco/psyco_accelerometer_1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 23:04:08,157 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 23:04:08,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 23:04:08,173 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 23:04:08,173 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 23:04:08,174 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 23:04:08,179 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 23:04:08,181 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 23:04:08,184 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 23:04:08,185 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 23:04:08,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 23:04:08,189 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 23:04:08,189 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 23:04:08,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 23:04:08,196 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 23:04:08,198 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 23:04:08,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 23:04:08,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 23:04:08,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 23:04:08,209 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 23:04:08,211 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 23:04:08,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 23:04:08,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 23:04:08,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 23:04:08,221 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 23:04:08,237 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 23:04:08,238 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 23:04:08,240 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 23:04:08,241 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 23:04:08,279 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 23:04:08,280 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 23:04:08,281 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 23:04:08,282 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 23:04:08,282 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 23:04:08,282 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 23:04:08,283 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 23:04:08,283 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 23:04:08,283 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 23:04:08,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 23:04:08,291 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 23:04:08,291 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 23:04:08,291 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 23:04:08,291 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 23:04:08,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 23:04:08,292 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 23:04:08,292 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 23:04:08,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 23:04:08,292 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 23:04:08,293 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 23:04:08,293 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 23:04:08,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 23:04:08,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 23:04:08,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 23:04:08,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 23:04:08,297 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 23:04:08,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:08,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 23:04:08,298 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 23:04:08,298 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 23:04:08,627 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 23:04:08,641 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 23:04:08,646 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 23:04:08,648 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 23:04:08,648 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 23:04:08,649 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_accelerometer_1.c [2020-07-21 23:04:08,741 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1b8e10f4/1abf5378a54040359523bf3cb94eb0d8/FLAGec48884f3 [2020-07-21 23:04:09,614 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 23:04:09,615 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/psyco/psyco_accelerometer_1.c [2020-07-21 23:04:09,673 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1b8e10f4/1abf5378a54040359523bf3cb94eb0d8/FLAGec48884f3 [2020-07-21 23:04:10,096 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1b8e10f4/1abf5378a54040359523bf3cb94eb0d8 [2020-07-21 23:04:10,108 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 23:04:10,112 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 23:04:10,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 23:04:10,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 23:04:10,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 23:04:10,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:04:10" (1/1) ... [2020-07-21 23:04:10,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74274924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:04:10, skipping insertion in model container [2020-07-21 23:04:10,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:04:10" (1/1) ... [2020-07-21 23:04:10,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 23:04:10,263 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 23:04:11,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 23:04:11,273 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 23:04:11,630 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 23:04:11,651 INFO L208 MainTranslator]: Completed translation [2020-07-21 23:04:11,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:04:11 WrapperNode [2020-07-21 23:04:11,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 23:04:11,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 23:04:11,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 23:04:11,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 23:04:11,676 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:04:11" (1/1) ... [2020-07-21 23:04:11,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:04:11" (1/1) ... [2020-07-21 23:04:11,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:04:11" (1/1) ... [2020-07-21 23:04:11,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:04:11" (1/1) ... [2020-07-21 23:04:11,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:04:11" (1/1) ... [2020-07-21 23:04:11,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:04:11" (1/1) ... [2020-07-21 23:04:11,863 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:04:11" (1/1) ... [2020-07-21 23:04:11,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 23:04:11,890 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 23:04:11,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 23:04:11,890 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 23:04:11,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:04:11" (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 23:04:11,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 23:04:11,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 23:04:11,986 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 23:04:11,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 23:04:11,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 23:04:11,988 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 23:04:11,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 23:04:11,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 23:04:14,082 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 23:04:14,082 INFO L295 CfgBuilder]: Removed 21 assume(true) statements. [2020-07-21 23:04:14,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:04:14 BoogieIcfgContainer [2020-07-21 23:04:14,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 23:04:14,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 23:04:14,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 23:04:14,096 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 23:04:14,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:04:10" (1/3) ... [2020-07-21 23:04:14,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19284f1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:04:14, skipping insertion in model container [2020-07-21 23:04:14,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:04:11" (2/3) ... [2020-07-21 23:04:14,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19284f1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:04:14, skipping insertion in model container [2020-07-21 23:04:14,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:04:14" (3/3) ... [2020-07-21 23:04:14,103 INFO L109 eAbstractionObserver]: Analyzing ICFG psyco_accelerometer_1.c [2020-07-21 23:04:14,118 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 23:04:14,130 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 23:04:14,148 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 23:04:14,180 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 23:04:14,181 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 23:04:14,181 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 23:04:14,181 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 23:04:14,181 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 23:04:14,182 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 23:04:14,182 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 23:04:14,182 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 23:04:14,212 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states. [2020-07-21 23:04:14,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-21 23:04:14,221 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:04:14,222 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:04:14,223 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:04:14,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:04:14,231 INFO L82 PathProgramCache]: Analyzing trace with hash -358841446, now seen corresponding path program 1 times [2020-07-21 23:04:14,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:04:14,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497596341] [2020-07-21 23:04:14,243 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 23:04:14,370 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:04:14,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:04:14,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 23:04:14,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:04:14,410 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 23:04:14,411 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:04:14,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497596341] [2020-07-21 23:04:14,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:04:14,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 23:04:14,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949815715] [2020-07-21 23:04:14,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 23:04:14,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:04:14,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 23:04:14,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 23:04:14,444 INFO L87 Difference]: Start difference. First operand 242 states. Second operand 2 states. [2020-07-21 23:04:14,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:04:14,508 INFO L93 Difference]: Finished difference Result 469 states and 916 transitions. [2020-07-21 23:04:14,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 23:04:14,510 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-07-21 23:04:14,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:04:14,533 INFO L225 Difference]: With dead ends: 469 [2020-07-21 23:04:14,537 INFO L226 Difference]: Without dead ends: 228 [2020-07-21 23:04:14,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 23:04:14,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-07-21 23:04:14,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2020-07-21 23:04:14,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-07-21 23:04:14,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 397 transitions. [2020-07-21 23:04:14,683 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 397 transitions. Word has length 13 [2020-07-21 23:04:14,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:04:14,685 INFO L479 AbstractCegarLoop]: Abstraction has 228 states and 397 transitions. [2020-07-21 23:04:14,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 23:04:14,686 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 397 transitions. [2020-07-21 23:04:14,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-21 23:04:14,688 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:04:14,689 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:04:14,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:14,905 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:04:14,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:04:14,906 INFO L82 PathProgramCache]: Analyzing trace with hash -2001683715, now seen corresponding path program 1 times [2020-07-21 23:04:14,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:04:14,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112235634] [2020-07-21 23:04:14,907 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 23:04:14,992 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:04:14,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:04:14,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 23:04:14,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:04:15,017 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 23:04:15,018 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:04:15,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112235634] [2020-07-21 23:04:15,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:04:15,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:04:15,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779465392] [2020-07-21 23:04:15,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:04:15,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:04:15,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:04:15,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:04:15,023 INFO L87 Difference]: Start difference. First operand 228 states and 397 transitions. Second operand 3 states. [2020-07-21 23:04:15,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:04:15,290 INFO L93 Difference]: Finished difference Result 453 states and 792 transitions. [2020-07-21 23:04:15,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:04:15,291 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-07-21 23:04:15,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:04:15,294 INFO L225 Difference]: With dead ends: 453 [2020-07-21 23:04:15,294 INFO L226 Difference]: Without dead ends: 231 [2020-07-21 23:04:15,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 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 23:04:15,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-07-21 23:04:15,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2020-07-21 23:04:15,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-07-21 23:04:15,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 400 transitions. [2020-07-21 23:04:15,316 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 400 transitions. Word has length 14 [2020-07-21 23:04:15,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:04:15,316 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 400 transitions. [2020-07-21 23:04:15,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:04:15,317 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 400 transitions. [2020-07-21 23:04:15,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-21 23:04:15,318 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:04:15,318 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:04:15,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:15,532 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:04:15,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:04:15,533 INFO L82 PathProgramCache]: Analyzing trace with hash 912246429, now seen corresponding path program 1 times [2020-07-21 23:04:15,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:04:15,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836000358] [2020-07-21 23:04:15,534 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 23:04:15,630 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:04:15,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:04:15,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 23:04:15,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:04:15,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:04:15,667 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:04:15,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836000358] [2020-07-21 23:04:15,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:04:15,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:04:15,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818143367] [2020-07-21 23:04:15,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:04:15,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:04:15,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:04:15,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:04:15,670 INFO L87 Difference]: Start difference. First operand 231 states and 400 transitions. Second operand 3 states. [2020-07-21 23:04:15,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:04:15,954 INFO L93 Difference]: Finished difference Result 440 states and 773 transitions. [2020-07-21 23:04:15,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:04:15,954 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-21 23:04:15,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:04:15,957 INFO L225 Difference]: With dead ends: 440 [2020-07-21 23:04:15,957 INFO L226 Difference]: Without dead ends: 216 [2020-07-21 23:04:15,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 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 23:04:15,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-07-21 23:04:15,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-07-21 23:04:15,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-07-21 23:04:15,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 378 transitions. [2020-07-21 23:04:15,970 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 378 transitions. Word has length 19 [2020-07-21 23:04:15,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:04:15,971 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 378 transitions. [2020-07-21 23:04:15,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:04:15,971 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 378 transitions. [2020-07-21 23:04:15,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-21 23:04:15,973 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:04:15,973 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:04:16,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:16,188 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:04:16,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:04:16,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1491178682, now seen corresponding path program 1 times [2020-07-21 23:04:16,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:04:16,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948659479] [2020-07-21 23:04:16,191 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 23:04:16,271 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:04:16,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:04:16,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 23:04:16,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:04:16,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:04:16,286 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:04:16,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948659479] [2020-07-21 23:04:16,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:04:16,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:04:16,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396144718] [2020-07-21 23:04:16,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:04:16,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:04:16,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:04:16,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:04:16,289 INFO L87 Difference]: Start difference. First operand 216 states and 378 transitions. Second operand 3 states. [2020-07-21 23:04:16,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:04:16,647 INFO L93 Difference]: Finished difference Result 618 states and 1102 transitions. [2020-07-21 23:04:16,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:04:16,647 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-07-21 23:04:16,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:04:16,651 INFO L225 Difference]: With dead ends: 618 [2020-07-21 23:04:16,651 INFO L226 Difference]: Without dead ends: 410 [2020-07-21 23:04:16,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 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 23:04:16,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-07-21 23:04:16,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 404. [2020-07-21 23:04:16,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 404 states. [2020-07-21 23:04:16,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 722 transitions. [2020-07-21 23:04:16,671 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 722 transitions. Word has length 22 [2020-07-21 23:04:16,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:04:16,672 INFO L479 AbstractCegarLoop]: Abstraction has 404 states and 722 transitions. [2020-07-21 23:04:16,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:04:16,672 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 722 transitions. [2020-07-21 23:04:16,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-21 23:04:16,673 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:04:16,673 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:04:16,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:16,887 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:04:16,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:04:16,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1582631867, now seen corresponding path program 1 times [2020-07-21 23:04:16,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:04:16,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534012340] [2020-07-21 23:04:16,890 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 23:04:16,972 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:04:16,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:04:16,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 23:04:16,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:04:17,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:04:17,005 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:04:17,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1534012340] [2020-07-21 23:04:17,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:04:17,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:04:17,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80164793] [2020-07-21 23:04:17,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:04:17,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:04:17,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:04:17,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:04:17,009 INFO L87 Difference]: Start difference. First operand 404 states and 722 transitions. Second operand 3 states. [2020-07-21 23:04:17,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:04:17,202 INFO L93 Difference]: Finished difference Result 640 states and 1134 transitions. [2020-07-21 23:04:17,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:04:17,202 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-07-21 23:04:17,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:04:17,205 INFO L225 Difference]: With dead ends: 640 [2020-07-21 23:04:17,205 INFO L226 Difference]: Without dead ends: 248 [2020-07-21 23:04:17,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 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 23:04:17,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-07-21 23:04:17,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 246. [2020-07-21 23:04:17,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-07-21 23:04:17,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 422 transitions. [2020-07-21 23:04:17,218 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 422 transitions. Word has length 23 [2020-07-21 23:04:17,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:04:17,218 INFO L479 AbstractCegarLoop]: Abstraction has 246 states and 422 transitions. [2020-07-21 23:04:17,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:04:17,219 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 422 transitions. [2020-07-21 23:04:17,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-21 23:04:17,220 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:04:17,220 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:04:17,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:17,433 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:04:17,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:04:17,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1006681014, now seen corresponding path program 1 times [2020-07-21 23:04:17,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:04:17,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087440748] [2020-07-21 23:04:17,435 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 23:04:17,509 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:04:17,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:04:17,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 23:04:17,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:04:17,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:04:17,525 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:04:17,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087440748] [2020-07-21 23:04:17,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:04:17,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:04:17,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544744700] [2020-07-21 23:04:17,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:04:17,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:04:17,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:04:17,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:04:17,528 INFO L87 Difference]: Start difference. First operand 246 states and 422 transitions. Second operand 3 states. [2020-07-21 23:04:17,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:04:17,711 INFO L93 Difference]: Finished difference Result 248 states and 423 transitions. [2020-07-21 23:04:17,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:04:17,713 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-07-21 23:04:17,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:04:17,718 INFO L225 Difference]: With dead ends: 248 [2020-07-21 23:04:17,719 INFO L226 Difference]: Without dead ends: 246 [2020-07-21 23:04:17,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 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 23:04:17,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-07-21 23:04:17,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2020-07-21 23:04:17,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-07-21 23:04:17,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 414 transitions. [2020-07-21 23:04:17,740 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 414 transitions. Word has length 23 [2020-07-21 23:04:17,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:04:17,741 INFO L479 AbstractCegarLoop]: Abstraction has 246 states and 414 transitions. [2020-07-21 23:04:17,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:04:17,741 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 414 transitions. [2020-07-21 23:04:17,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-21 23:04:17,742 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:04:17,742 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-21 23:04:17,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:17,954 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:04:17,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:04:17,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1124944987, now seen corresponding path program 1 times [2020-07-21 23:04:17,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:04:17,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685861000] [2020-07-21 23:04:17,956 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 23:04:18,025 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:04:18,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:04:18,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 23:04:18,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:04:18,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:04:18,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:04:18,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685861000] [2020-07-21 23:04:18,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:04:18,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:04:18,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858804090] [2020-07-21 23:04:18,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:04:18,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:04:18,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:04:18,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:04:18,061 INFO L87 Difference]: Start difference. First operand 246 states and 414 transitions. Second operand 3 states. [2020-07-21 23:04:18,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:04:18,807 INFO L93 Difference]: Finished difference Result 653 states and 1108 transitions. [2020-07-21 23:04:18,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:04:18,808 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-07-21 23:04:18,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:04:18,814 INFO L225 Difference]: With dead ends: 653 [2020-07-21 23:04:18,814 INFO L226 Difference]: Without dead ends: 415 [2020-07-21 23:04:18,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 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 23:04:18,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2020-07-21 23:04:18,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 402. [2020-07-21 23:04:18,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2020-07-21 23:04:18,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 614 transitions. [2020-07-21 23:04:18,844 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 614 transitions. Word has length 26 [2020-07-21 23:04:18,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:04:18,848 INFO L479 AbstractCegarLoop]: Abstraction has 402 states and 614 transitions. [2020-07-21 23:04:18,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:04:18,848 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 614 transitions. [2020-07-21 23:04:18,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-21 23:04:18,858 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:04:18,859 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-07-21 23:04:19,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:19,074 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:04:19,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:04:19,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1803598039, now seen corresponding path program 1 times [2020-07-21 23:04:19,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:04:19,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215099014] [2020-07-21 23:04:19,075 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 23:04:19,149 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:04:19,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:04:19,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 23:04:19,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:04:19,165 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 23:04:19,166 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:04:19,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215099014] [2020-07-21 23:04:19,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:04:19,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:04:19,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073776311] [2020-07-21 23:04:19,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:04:19,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:04:19,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:04:19,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:04:19,170 INFO L87 Difference]: Start difference. First operand 402 states and 614 transitions. Second operand 3 states. [2020-07-21 23:04:19,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:04:19,259 INFO L93 Difference]: Finished difference Result 733 states and 1129 transitions. [2020-07-21 23:04:19,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:04:19,264 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-07-21 23:04:19,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:04:19,268 INFO L225 Difference]: With dead ends: 733 [2020-07-21 23:04:19,268 INFO L226 Difference]: Without dead ends: 343 [2020-07-21 23:04:19,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 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 23:04:19,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-07-21 23:04:19,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2020-07-21 23:04:19,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-07-21 23:04:19,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 526 transitions. [2020-07-21 23:04:19,286 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 526 transitions. Word has length 36 [2020-07-21 23:04:19,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:04:19,289 INFO L479 AbstractCegarLoop]: Abstraction has 343 states and 526 transitions. [2020-07-21 23:04:19,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:04:19,289 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 526 transitions. [2020-07-21 23:04:19,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-21 23:04:19,293 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:04:19,294 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:04:19,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:19,510 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:04:19,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:04:19,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1771198676, now seen corresponding path program 1 times [2020-07-21 23:04:19,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:04:19,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1921498012] [2020-07-21 23:04:19,513 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 23:04:19,601 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:04:19,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:04:19,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 23:04:19,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:04:19,617 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 23:04:19,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:04:19,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1921498012] [2020-07-21 23:04:19,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:04:19,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:04:19,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932182483] [2020-07-21 23:04:19,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:04:19,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:04:19,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:04:19,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:04:19,625 INFO L87 Difference]: Start difference. First operand 343 states and 526 transitions. Second operand 3 states. [2020-07-21 23:04:19,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:04:19,712 INFO L93 Difference]: Finished difference Result 668 states and 1033 transitions. [2020-07-21 23:04:19,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:04:19,713 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-07-21 23:04:19,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:04:19,716 INFO L225 Difference]: With dead ends: 668 [2020-07-21 23:04:19,717 INFO L226 Difference]: Without dead ends: 337 [2020-07-21 23:04:19,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 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 23:04:19,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-07-21 23:04:19,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2020-07-21 23:04:19,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-07-21 23:04:19,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 506 transitions. [2020-07-21 23:04:19,732 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 506 transitions. Word has length 37 [2020-07-21 23:04:19,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:04:19,733 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 506 transitions. [2020-07-21 23:04:19,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:04:19,733 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 506 transitions. [2020-07-21 23:04:19,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-21 23:04:19,734 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:04:19,735 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:04:19,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:19,945 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:04:19,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:04:19,946 INFO L82 PathProgramCache]: Analyzing trace with hash -2025838196, now seen corresponding path program 1 times [2020-07-21 23:04:19,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:04:19,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668422440] [2020-07-21 23:04:19,947 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 23:04:20,027 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:04:20,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:04:20,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 23:04:20,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:04:20,052 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 23:04:20,053 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:04:20,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668422440] [2020-07-21 23:04:20,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:04:20,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:04:20,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753664666] [2020-07-21 23:04:20,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:04:20,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:04:20,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:04:20,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:04:20,058 INFO L87 Difference]: Start difference. First operand 337 states and 506 transitions. Second operand 3 states. [2020-07-21 23:04:20,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:04:20,546 INFO L93 Difference]: Finished difference Result 380 states and 547 transitions. [2020-07-21 23:04:20,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:04:20,547 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2020-07-21 23:04:20,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:04:20,550 INFO L225 Difference]: With dead ends: 380 [2020-07-21 23:04:20,550 INFO L226 Difference]: Without dead ends: 343 [2020-07-21 23:04:20,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 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 23:04:20,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-07-21 23:04:20,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 337. [2020-07-21 23:04:20,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-07-21 23:04:20,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 470 transitions. [2020-07-21 23:04:20,567 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 470 transitions. Word has length 41 [2020-07-21 23:04:20,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:04:20,568 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 470 transitions. [2020-07-21 23:04:20,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:04:20,568 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 470 transitions. [2020-07-21 23:04:20,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-21 23:04:20,569 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:04:20,570 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:04:20,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:20,786 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:04:20,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:04:20,787 INFO L82 PathProgramCache]: Analyzing trace with hash -197451388, now seen corresponding path program 1 times [2020-07-21 23:04:20,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:04:20,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770852103] [2020-07-21 23:04:20,788 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 23:04:20,860 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:04:20,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:04:20,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 23:04:20,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:04:20,876 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 23:04:20,876 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:04:20,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770852103] [2020-07-21 23:04:20,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:04:20,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:04:20,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825773217] [2020-07-21 23:04:20,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:04:20,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:04:20,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:04:20,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:04:20,881 INFO L87 Difference]: Start difference. First operand 337 states and 470 transitions. Second operand 3 states. [2020-07-21 23:04:20,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:04:20,949 INFO L93 Difference]: Finished difference Result 643 states and 898 transitions. [2020-07-21 23:04:20,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:04:20,950 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2020-07-21 23:04:20,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:04:20,954 INFO L225 Difference]: With dead ends: 643 [2020-07-21 23:04:20,954 INFO L226 Difference]: Without dead ends: 318 [2020-07-21 23:04:20,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 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 23:04:20,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-07-21 23:04:20,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 318. [2020-07-21 23:04:20,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2020-07-21 23:04:20,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 439 transitions. [2020-07-21 23:04:20,967 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 439 transitions. Word has length 42 [2020-07-21 23:04:20,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:04:20,968 INFO L479 AbstractCegarLoop]: Abstraction has 318 states and 439 transitions. [2020-07-21 23:04:20,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:04:20,968 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 439 transitions. [2020-07-21 23:04:20,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-07-21 23:04:20,969 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:04:20,969 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:04:21,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:21,184 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:04:21,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:04:21,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1099613084, now seen corresponding path program 1 times [2020-07-21 23:04:21,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:04:21,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076974041] [2020-07-21 23:04:21,186 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 23:04:21,269 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:04:21,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:04:21,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 23:04:21,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:04:21,287 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 23:04:21,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:04:21,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076974041] [2020-07-21 23:04:21,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:04:21,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:04:21,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795314388] [2020-07-21 23:04:21,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:04:21,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:04:21,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:04:21,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:04:21,291 INFO L87 Difference]: Start difference. First operand 318 states and 439 transitions. Second operand 3 states. [2020-07-21 23:04:21,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:04:21,372 INFO L93 Difference]: Finished difference Result 484 states and 678 transitions. [2020-07-21 23:04:21,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:04:21,373 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2020-07-21 23:04:21,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:04:21,374 INFO L225 Difference]: With dead ends: 484 [2020-07-21 23:04:21,375 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 23:04:21,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 41 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 23:04:21,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 23:04:21,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 23:04:21,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 23:04:21,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 23:04:21,378 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2020-07-21 23:04:21,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:04:21,378 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 23:04:21,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:04:21,378 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 23:04:21,378 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 23:04:21,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:21,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 23:04:21,840 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 24 [2020-07-21 23:04:21,935 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 23:04:21,936 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 23:04:21,937 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 23:04:21,937 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 23:04:21,937 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 23:04:21,937 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 23:04:21,937 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 23:04:21,937 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 16 1255) no Hoare annotation was computed. [2020-07-21 23:04:21,937 INFO L268 CegarLoopResult]: For program point L895(lines 895 897) no Hoare annotation was computed. [2020-07-21 23:04:21,938 INFO L268 CegarLoopResult]: For program point L763(lines 763 774) no Hoare annotation was computed. [2020-07-21 23:04:21,938 INFO L268 CegarLoopResult]: For program point L697(lines 697 712) no Hoare annotation was computed. [2020-07-21 23:04:21,938 INFO L268 CegarLoopResult]: For program point L367(lines 367 369) no Hoare annotation was computed. [2020-07-21 23:04:21,938 INFO L268 CegarLoopResult]: For program point L235(lines 235 237) no Hoare annotation was computed. [2020-07-21 23:04:21,938 INFO L268 CegarLoopResult]: For program point L103(lines 103 105) no Hoare annotation was computed. [2020-07-21 23:04:21,938 INFO L268 CegarLoopResult]: For program point L831(lines 831 833) no Hoare annotation was computed. [2020-07-21 23:04:21,938 INFO L268 CegarLoopResult]: For program point L699(lines 699 710) no Hoare annotation was computed. [2020-07-21 23:04:21,938 INFO L268 CegarLoopResult]: For program point L633(lines 633 648) no Hoare annotation was computed. [2020-07-21 23:04:21,939 INFO L268 CegarLoopResult]: For program point L171(lines 171 173) no Hoare annotation was computed. [2020-07-21 23:04:21,939 INFO L268 CegarLoopResult]: For program point L1229(lines 1229 1244) no Hoare annotation was computed. [2020-07-21 23:04:21,939 INFO L268 CegarLoopResult]: For program point L767(lines 767 769) no Hoare annotation was computed. [2020-07-21 23:04:21,939 INFO L268 CegarLoopResult]: For program point L635(lines 635 646) no Hoare annotation was computed. [2020-07-21 23:04:21,939 INFO L268 CegarLoopResult]: For program point L569(lines 569 584) no Hoare annotation was computed. [2020-07-21 23:04:21,939 INFO L268 CegarLoopResult]: For program point L1231(lines 1231 1242) no Hoare annotation was computed. [2020-07-21 23:04:21,939 INFO L268 CegarLoopResult]: For program point L1165(lines 1165 1180) no Hoare annotation was computed. [2020-07-21 23:04:21,939 INFO L268 CegarLoopResult]: For program point L1033(lines 1033 1048) no Hoare annotation was computed. [2020-07-21 23:04:21,940 INFO L268 CegarLoopResult]: For program point L703(lines 703 705) no Hoare annotation was computed. [2020-07-21 23:04:21,940 INFO L268 CegarLoopResult]: For program point L571(lines 571 582) no Hoare annotation was computed. [2020-07-21 23:04:21,940 INFO L268 CegarLoopResult]: For program point L505(lines 505 520) no Hoare annotation was computed. [2020-07-21 23:04:21,940 INFO L268 CegarLoopResult]: For program point L1167(lines 1167 1178) no Hoare annotation was computed. [2020-07-21 23:04:21,940 INFO L268 CegarLoopResult]: For program point L1101(lines 1101 1116) no Hoare annotation was computed. [2020-07-21 23:04:21,940 INFO L268 CegarLoopResult]: For program point L44(lines 44 63) no Hoare annotation was computed. [2020-07-21 23:04:21,940 INFO L268 CegarLoopResult]: For program point L1035(lines 1035 1046) no Hoare annotation was computed. [2020-07-21 23:04:21,941 INFO L268 CegarLoopResult]: For program point L969(lines 969 984) no Hoare annotation was computed. [2020-07-21 23:04:21,941 INFO L268 CegarLoopResult]: For program point L639(lines 639 641) no Hoare annotation was computed. [2020-07-21 23:04:21,941 INFO L268 CegarLoopResult]: For program point L507(lines 507 518) no Hoare annotation was computed. [2020-07-21 23:04:21,941 INFO L268 CegarLoopResult]: For program point L441(lines 441 456) no Hoare annotation was computed. [2020-07-21 23:04:21,941 INFO L268 CegarLoopResult]: For program point L309(lines 309 324) no Hoare annotation was computed. [2020-07-21 23:04:21,941 INFO L268 CegarLoopResult]: For program point L45(lines 45 60) no Hoare annotation was computed. [2020-07-21 23:04:21,941 INFO L268 CegarLoopResult]: For program point L1235(lines 1235 1237) no Hoare annotation was computed. [2020-07-21 23:04:21,942 INFO L268 CegarLoopResult]: For program point L1103(lines 1103 1114) no Hoare annotation was computed. [2020-07-21 23:04:21,942 INFO L268 CegarLoopResult]: For program point L971(lines 971 982) no Hoare annotation was computed. [2020-07-21 23:04:21,942 INFO L268 CegarLoopResult]: For program point L905(lines 905 920) no Hoare annotation was computed. [2020-07-21 23:04:21,942 INFO L268 CegarLoopResult]: For program point L575(lines 575 577) no Hoare annotation was computed. [2020-07-21 23:04:21,942 INFO L268 CegarLoopResult]: For program point L443(lines 443 454) no Hoare annotation was computed. [2020-07-21 23:04:21,942 INFO L268 CegarLoopResult]: For program point L377(lines 377 392) no Hoare annotation was computed. [2020-07-21 23:04:21,942 INFO L268 CegarLoopResult]: For program point L311(lines 311 322) no Hoare annotation was computed. [2020-07-21 23:04:21,943 INFO L268 CegarLoopResult]: For program point L245(lines 245 260) no Hoare annotation was computed. [2020-07-21 23:04:21,943 INFO L264 CegarLoopResult]: At program point L1236(lines 16 1255) the Hoare annotation is: false [2020-07-21 23:04:21,943 INFO L268 CegarLoopResult]: For program point L113(lines 113 128) no Hoare annotation was computed. [2020-07-21 23:04:21,943 INFO L268 CegarLoopResult]: For program point L47(lines 47 58) no Hoare annotation was computed. [2020-07-21 23:04:21,943 INFO L268 CegarLoopResult]: For program point L1171(lines 1171 1173) no Hoare annotation was computed. [2020-07-21 23:04:21,943 INFO L268 CegarLoopResult]: For program point L1039(lines 1039 1041) no Hoare annotation was computed. [2020-07-21 23:04:21,944 INFO L268 CegarLoopResult]: For program point L907(lines 907 918) no Hoare annotation was computed. [2020-07-21 23:04:21,944 INFO L268 CegarLoopResult]: For program point L841(lines 841 856) no Hoare annotation was computed. [2020-07-21 23:04:21,944 INFO L268 CegarLoopResult]: For program point L511(lines 511 513) no Hoare annotation was computed. [2020-07-21 23:04:21,944 INFO L268 CegarLoopResult]: For program point L379(lines 379 390) no Hoare annotation was computed. [2020-07-21 23:04:21,944 INFO L268 CegarLoopResult]: For program point L247(lines 247 258) no Hoare annotation was computed. [2020-07-21 23:04:21,944 INFO L268 CegarLoopResult]: For program point L181(lines 181 196) no Hoare annotation was computed. [2020-07-21 23:04:21,944 INFO L268 CegarLoopResult]: For program point L115(lines 115 126) no Hoare annotation was computed. [2020-07-21 23:04:21,944 INFO L268 CegarLoopResult]: For program point L1107(lines 1107 1109) no Hoare annotation was computed. [2020-07-21 23:04:21,945 INFO L268 CegarLoopResult]: For program point L975(lines 975 977) no Hoare annotation was computed. [2020-07-21 23:04:21,945 INFO L268 CegarLoopResult]: For program point L843(lines 843 854) no Hoare annotation was computed. [2020-07-21 23:04:21,945 INFO L268 CegarLoopResult]: For program point L777(lines 777 792) no Hoare annotation was computed. [2020-07-21 23:04:21,945 INFO L268 CegarLoopResult]: For program point L447(lines 447 449) no Hoare annotation was computed. [2020-07-21 23:04:21,945 INFO L268 CegarLoopResult]: For program point L315(lines 315 317) no Hoare annotation was computed. [2020-07-21 23:04:21,945 INFO L268 CegarLoopResult]: For program point L183(lines 183 194) no Hoare annotation was computed. [2020-07-21 23:04:21,946 INFO L268 CegarLoopResult]: For program point L51(lines 51 53) no Hoare annotation was computed. [2020-07-21 23:04:21,946 INFO L268 CegarLoopResult]: For program point L911(lines 911 913) no Hoare annotation was computed. [2020-07-21 23:04:21,946 INFO L268 CegarLoopResult]: For program point L779(lines 779 790) no Hoare annotation was computed. [2020-07-21 23:04:21,946 INFO L268 CegarLoopResult]: For program point L713(lines 713 728) no Hoare annotation was computed. [2020-07-21 23:04:21,946 INFO L268 CegarLoopResult]: For program point L383(lines 383 385) no Hoare annotation was computed. [2020-07-21 23:04:21,946 INFO L268 CegarLoopResult]: For program point L251(lines 251 253) no Hoare annotation was computed. [2020-07-21 23:04:21,946 INFO L268 CegarLoopResult]: For program point L119(lines 119 121) no Hoare annotation was computed. [2020-07-21 23:04:21,946 INFO L268 CegarLoopResult]: For program point L847(lines 847 849) no Hoare annotation was computed. [2020-07-21 23:04:21,947 INFO L268 CegarLoopResult]: For program point L715(lines 715 726) no Hoare annotation was computed. [2020-07-21 23:04:21,947 INFO L268 CegarLoopResult]: For program point L649(lines 649 664) no Hoare annotation was computed. [2020-07-21 23:04:21,947 INFO L268 CegarLoopResult]: For program point L187(lines 187 189) no Hoare annotation was computed. [2020-07-21 23:04:21,947 INFO L268 CegarLoopResult]: For program point L783(lines 783 785) no Hoare annotation was computed. [2020-07-21 23:04:21,947 INFO L268 CegarLoopResult]: For program point L651(lines 651 662) no Hoare annotation was computed. [2020-07-21 23:04:21,947 INFO L268 CegarLoopResult]: For program point L585(lines 585 600) no Hoare annotation was computed. [2020-07-21 23:04:21,947 INFO L264 CegarLoopResult]: At program point L1246(lines 32 1250) the Hoare annotation is: (let ((.cse3 (= 0 main_~this_m_conn~0)) (.cse0 (= 0 main_~this_m_conn_data_listener~0)) (.cse1 (<= 1 main_~this_m_conn~0)) (.cse2 (<= 1 main_~this_m_delta~0))) (or (and (<= 4 main_~q~0) .cse0 .cse1 .cse2) (and .cse3 .cse0 .cse2 (= 2 main_~q~0)) (and (= 0 main_~q~0) .cse3 .cse0 .cse2) (and (<= 3 main_~q~0) (<= 1 main_~this_m_conn_data_listener~0) .cse1 .cse2 (<= main_~q~0 3)))) [2020-07-21 23:04:21,948 INFO L268 CegarLoopResult]: For program point L1181(lines 1181 1196) no Hoare annotation was computed. [2020-07-21 23:04:21,948 INFO L268 CegarLoopResult]: For program point L1049(lines 1049 1064) no Hoare annotation was computed. [2020-07-21 23:04:21,948 INFO L268 CegarLoopResult]: For program point L719(lines 719 721) no Hoare annotation was computed. [2020-07-21 23:04:21,948 INFO L268 CegarLoopResult]: For program point L587(lines 587 598) no Hoare annotation was computed. [2020-07-21 23:04:21,948 INFO L268 CegarLoopResult]: For program point L521(lines 521 536) no Hoare annotation was computed. [2020-07-21 23:04:21,948 INFO L268 CegarLoopResult]: For program point L1183(lines 1183 1194) no Hoare annotation was computed. [2020-07-21 23:04:21,948 INFO L268 CegarLoopResult]: For program point L1117(lines 1117 1132) no Hoare annotation was computed. [2020-07-21 23:04:21,948 INFO L268 CegarLoopResult]: For program point L1051(lines 1051 1062) no Hoare annotation was computed. [2020-07-21 23:04:21,949 INFO L268 CegarLoopResult]: For program point L985(lines 985 1000) no Hoare annotation was computed. [2020-07-21 23:04:21,949 INFO L268 CegarLoopResult]: For program point L655(lines 655 657) no Hoare annotation was computed. [2020-07-21 23:04:21,949 INFO L268 CegarLoopResult]: For program point L523(lines 523 534) no Hoare annotation was computed. [2020-07-21 23:04:21,949 INFO L268 CegarLoopResult]: For program point L457(lines 457 472) no Hoare annotation was computed. [2020-07-21 23:04:21,949 INFO L268 CegarLoopResult]: For program point L1119(lines 1119 1130) no Hoare annotation was computed. [2020-07-21 23:04:21,949 INFO L268 CegarLoopResult]: For program point L987(lines 987 998) no Hoare annotation was computed. [2020-07-21 23:04:21,949 INFO L268 CegarLoopResult]: For program point L921(lines 921 936) no Hoare annotation was computed. [2020-07-21 23:04:21,949 INFO L268 CegarLoopResult]: For program point L591(lines 591 593) no Hoare annotation was computed. [2020-07-21 23:04:21,949 INFO L268 CegarLoopResult]: For program point L459(lines 459 470) no Hoare annotation was computed. [2020-07-21 23:04:21,950 INFO L268 CegarLoopResult]: For program point L393(lines 393 408) no Hoare annotation was computed. [2020-07-21 23:04:21,950 INFO L268 CegarLoopResult]: For program point L261(lines 261 276) no Hoare annotation was computed. [2020-07-21 23:04:21,950 INFO L268 CegarLoopResult]: For program point L129(lines 129 144) no Hoare annotation was computed. [2020-07-21 23:04:21,950 INFO L268 CegarLoopResult]: For program point L328(lines 328 1067) no Hoare annotation was computed. [2020-07-21 23:04:21,950 INFO L268 CegarLoopResult]: For program point L1187(lines 1187 1189) no Hoare annotation was computed. [2020-07-21 23:04:21,950 INFO L268 CegarLoopResult]: For program point L64(lines 64 147) no Hoare annotation was computed. [2020-07-21 23:04:21,950 INFO L268 CegarLoopResult]: For program point L1055(lines 1055 1057) no Hoare annotation was computed. [2020-07-21 23:04:21,950 INFO L268 CegarLoopResult]: For program point L923(lines 923 934) no Hoare annotation was computed. [2020-07-21 23:04:21,950 INFO L268 CegarLoopResult]: For program point L857(lines 857 872) no Hoare annotation was computed. [2020-07-21 23:04:21,951 INFO L268 CegarLoopResult]: For program point L527(lines 527 529) no Hoare annotation was computed. [2020-07-21 23:04:21,951 INFO L268 CegarLoopResult]: For program point L395(lines 395 406) no Hoare annotation was computed. [2020-07-21 23:04:21,951 INFO L268 CegarLoopResult]: For program point L329(lines 329 344) no Hoare annotation was computed. [2020-07-21 23:04:21,951 INFO L268 CegarLoopResult]: For program point L263(lines 263 274) no Hoare annotation was computed. [2020-07-21 23:04:21,951 INFO L268 CegarLoopResult]: For program point L197(lines 197 212) no Hoare annotation was computed. [2020-07-21 23:04:21,951 INFO L268 CegarLoopResult]: For program point L131(lines 131 142) no Hoare annotation was computed. [2020-07-21 23:04:21,951 INFO L268 CegarLoopResult]: For program point L65(lines 65 80) no Hoare annotation was computed. [2020-07-21 23:04:21,951 INFO L268 CegarLoopResult]: For program point L1123(lines 1123 1125) no Hoare annotation was computed. [2020-07-21 23:04:21,951 INFO L268 CegarLoopResult]: For program point L991(lines 991 993) no Hoare annotation was computed. [2020-07-21 23:04:21,952 INFO L268 CegarLoopResult]: For program point L859(lines 859 870) no Hoare annotation was computed. [2020-07-21 23:04:21,952 INFO L268 CegarLoopResult]: For program point L793(lines 793 808) no Hoare annotation was computed. [2020-07-21 23:04:21,952 INFO L268 CegarLoopResult]: For program point L463(lines 463 465) no Hoare annotation was computed. [2020-07-21 23:04:21,952 INFO L268 CegarLoopResult]: For program point L331(lines 331 342) no Hoare annotation was computed. [2020-07-21 23:04:21,952 INFO L268 CegarLoopResult]: For program point L199(lines 199 210) no Hoare annotation was computed. [2020-07-21 23:04:21,952 INFO L268 CegarLoopResult]: For program point L67(lines 67 78) no Hoare annotation was computed. [2020-07-21 23:04:21,952 INFO L268 CegarLoopResult]: For program point L927(lines 927 929) no Hoare annotation was computed. [2020-07-21 23:04:21,952 INFO L268 CegarLoopResult]: For program point L795(lines 795 806) no Hoare annotation was computed. [2020-07-21 23:04:21,952 INFO L268 CegarLoopResult]: For program point L729(lines 729 744) no Hoare annotation was computed. [2020-07-21 23:04:21,953 INFO L268 CegarLoopResult]: For program point L399(lines 399 401) no Hoare annotation was computed. [2020-07-21 23:04:21,953 INFO L268 CegarLoopResult]: For program point L267(lines 267 269) no Hoare annotation was computed. [2020-07-21 23:04:21,953 INFO L268 CegarLoopResult]: For program point L135(lines 135 137) no Hoare annotation was computed. [2020-07-21 23:04:21,953 INFO L268 CegarLoopResult]: For program point L863(lines 863 865) no Hoare annotation was computed. [2020-07-21 23:04:21,953 INFO L268 CegarLoopResult]: For program point L731(lines 731 742) no Hoare annotation was computed. [2020-07-21 23:04:21,953 INFO L268 CegarLoopResult]: For program point L665(lines 665 680) no Hoare annotation was computed. [2020-07-21 23:04:21,953 INFO L268 CegarLoopResult]: For program point L335(lines 335 337) no Hoare annotation was computed. [2020-07-21 23:04:21,953 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 16 1255) no Hoare annotation was computed. [2020-07-21 23:04:21,954 INFO L268 CegarLoopResult]: For program point L203(lines 203 205) no Hoare annotation was computed. [2020-07-21 23:04:21,954 INFO L268 CegarLoopResult]: For program point L71(lines 71 73) no Hoare annotation was computed. [2020-07-21 23:04:21,954 INFO L268 CegarLoopResult]: For program point L799(lines 799 801) no Hoare annotation was computed. [2020-07-21 23:04:21,954 INFO L268 CegarLoopResult]: For program point L667(lines 667 678) no Hoare annotation was computed. [2020-07-21 23:04:21,954 INFO L268 CegarLoopResult]: For program point L601(lines 601 616) no Hoare annotation was computed. [2020-07-21 23:04:21,954 INFO L268 CegarLoopResult]: For program point L1197(lines 1197 1212) no Hoare annotation was computed. [2020-07-21 23:04:21,954 INFO L268 CegarLoopResult]: For program point L735(lines 735 737) no Hoare annotation was computed. [2020-07-21 23:04:21,954 INFO L268 CegarLoopResult]: For program point L603(lines 603 614) no Hoare annotation was computed. [2020-07-21 23:04:21,955 INFO L268 CegarLoopResult]: For program point L537(lines 537 552) no Hoare annotation was computed. [2020-07-21 23:04:21,955 INFO L268 CegarLoopResult]: For program point L1199(lines 1199 1210) no Hoare annotation was computed. [2020-07-21 23:04:21,955 INFO L268 CegarLoopResult]: For program point L1133(lines 1133 1148) no Hoare annotation was computed. [2020-07-21 23:04:21,955 INFO L268 CegarLoopResult]: For program point L1001(lines 1001 1016) no Hoare annotation was computed. [2020-07-21 23:04:21,955 INFO L268 CegarLoopResult]: For program point L671(lines 671 673) no Hoare annotation was computed. [2020-07-21 23:04:21,955 INFO L268 CegarLoopResult]: For program point L539(lines 539 550) no Hoare annotation was computed. [2020-07-21 23:04:21,955 INFO L268 CegarLoopResult]: For program point L473(lines 473 488) no Hoare annotation was computed. [2020-07-21 23:04:21,955 INFO L268 CegarLoopResult]: For program point L1068(lines 1068 1247) no Hoare annotation was computed. [2020-07-21 23:04:21,955 INFO L268 CegarLoopResult]: For program point L1135(lines 1135 1146) no Hoare annotation was computed. [2020-07-21 23:04:21,956 INFO L268 CegarLoopResult]: For program point L1069(lines 1069 1084) no Hoare annotation was computed. [2020-07-21 23:04:21,956 INFO L268 CegarLoopResult]: For program point L1003(lines 1003 1014) no Hoare annotation was computed. [2020-07-21 23:04:21,956 INFO L268 CegarLoopResult]: For program point L937(lines 937 952) no Hoare annotation was computed. [2020-07-21 23:04:21,956 INFO L268 CegarLoopResult]: For program point L607(lines 607 609) no Hoare annotation was computed. [2020-07-21 23:04:21,956 INFO L268 CegarLoopResult]: For program point L475(lines 475 486) no Hoare annotation was computed. [2020-07-21 23:04:21,956 INFO L268 CegarLoopResult]: For program point L409(lines 409 424) no Hoare annotation was computed. [2020-07-21 23:04:21,956 INFO L268 CegarLoopResult]: For program point L277(lines 277 292) no Hoare annotation was computed. [2020-07-21 23:04:21,957 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 1254) no Hoare annotation was computed. [2020-07-21 23:04:21,957 INFO L268 CegarLoopResult]: For program point L1203(lines 1203 1205) no Hoare annotation was computed. [2020-07-21 23:04:21,957 INFO L268 CegarLoopResult]: For program point L1071(lines 1071 1082) no Hoare annotation was computed. [2020-07-21 23:04:21,957 INFO L268 CegarLoopResult]: For program point L939(lines 939 950) no Hoare annotation was computed. [2020-07-21 23:04:21,957 INFO L268 CegarLoopResult]: For program point L873(lines 873 888) no Hoare annotation was computed. [2020-07-21 23:04:21,957 INFO L268 CegarLoopResult]: For program point L543(lines 543 545) no Hoare annotation was computed. [2020-07-21 23:04:21,957 INFO L268 CegarLoopResult]: For program point L411(lines 411 422) no Hoare annotation was computed. [2020-07-21 23:04:21,957 INFO L268 CegarLoopResult]: For program point L345(lines 345 360) no Hoare annotation was computed. [2020-07-21 23:04:21,957 INFO L268 CegarLoopResult]: For program point L279(lines 279 290) no Hoare annotation was computed. [2020-07-21 23:04:21,957 INFO L268 CegarLoopResult]: For program point L213(lines 213 228) no Hoare annotation was computed. [2020-07-21 23:04:21,958 INFO L268 CegarLoopResult]: For program point L81(lines 81 96) no Hoare annotation was computed. [2020-07-21 23:04:21,958 INFO L268 CegarLoopResult]: For program point L148(lines 148 327) no Hoare annotation was computed. [2020-07-21 23:04:21,958 INFO L268 CegarLoopResult]: For program point L1139(lines 1139 1141) no Hoare annotation was computed. [2020-07-21 23:04:21,958 INFO L268 CegarLoopResult]: For program point L1007(lines 1007 1009) no Hoare annotation was computed. [2020-07-21 23:04:21,958 INFO L268 CegarLoopResult]: For program point L875(lines 875 886) no Hoare annotation was computed. [2020-07-21 23:04:21,958 INFO L268 CegarLoopResult]: For program point L809(lines 809 824) no Hoare annotation was computed. [2020-07-21 23:04:21,958 INFO L268 CegarLoopResult]: For program point L479(lines 479 481) no Hoare annotation was computed. [2020-07-21 23:04:21,958 INFO L268 CegarLoopResult]: For program point L347(lines 347 358) no Hoare annotation was computed. [2020-07-21 23:04:21,959 INFO L268 CegarLoopResult]: For program point L215(lines 215 226) no Hoare annotation was computed. [2020-07-21 23:04:21,959 INFO L268 CegarLoopResult]: For program point L149(lines 149 164) no Hoare annotation was computed. [2020-07-21 23:04:21,959 INFO L268 CegarLoopResult]: For program point L83(lines 83 94) no Hoare annotation was computed. [2020-07-21 23:04:21,959 INFO L268 CegarLoopResult]: For program point L1075(lines 1075 1077) no Hoare annotation was computed. [2020-07-21 23:04:21,959 INFO L268 CegarLoopResult]: For program point L943(lines 943 945) no Hoare annotation was computed. [2020-07-21 23:04:21,959 INFO L268 CegarLoopResult]: For program point L811(lines 811 822) no Hoare annotation was computed. [2020-07-21 23:04:21,959 INFO L268 CegarLoopResult]: For program point L745(lines 745 760) no Hoare annotation was computed. [2020-07-21 23:04:21,960 INFO L268 CegarLoopResult]: For program point L415(lines 415 417) no Hoare annotation was computed. [2020-07-21 23:04:21,960 INFO L268 CegarLoopResult]: For program point L283(lines 283 285) no Hoare annotation was computed. [2020-07-21 23:04:21,960 INFO L268 CegarLoopResult]: For program point L151(lines 151 162) no Hoare annotation was computed. [2020-07-21 23:04:21,960 INFO L268 CegarLoopResult]: For program point L879(lines 879 881) no Hoare annotation was computed. [2020-07-21 23:04:21,960 INFO L268 CegarLoopResult]: For program point L747(lines 747 758) no Hoare annotation was computed. [2020-07-21 23:04:21,960 INFO L268 CegarLoopResult]: For program point L681(lines 681 696) no Hoare annotation was computed. [2020-07-21 23:04:21,960 INFO L268 CegarLoopResult]: For program point L351(lines 351 353) no Hoare annotation was computed. [2020-07-21 23:04:21,960 INFO L268 CegarLoopResult]: For program point L219(lines 219 221) no Hoare annotation was computed. [2020-07-21 23:04:21,961 INFO L268 CegarLoopResult]: For program point L87(lines 87 89) no Hoare annotation was computed. [2020-07-21 23:04:21,961 INFO L268 CegarLoopResult]: For program point L815(lines 815 817) no Hoare annotation was computed. [2020-07-21 23:04:21,961 INFO L268 CegarLoopResult]: For program point L683(lines 683 694) no Hoare annotation was computed. [2020-07-21 23:04:21,961 INFO L268 CegarLoopResult]: For program point L617(lines 617 632) no Hoare annotation was computed. [2020-07-21 23:04:21,961 INFO L268 CegarLoopResult]: For program point L155(lines 155 157) no Hoare annotation was computed. [2020-07-21 23:04:21,961 INFO L268 CegarLoopResult]: For program point L1213(lines 1213 1228) no Hoare annotation was computed. [2020-07-21 23:04:21,961 INFO L268 CegarLoopResult]: For program point L751(lines 751 753) no Hoare annotation was computed. [2020-07-21 23:04:21,961 INFO L268 CegarLoopResult]: For program point L619(lines 619 630) no Hoare annotation was computed. [2020-07-21 23:04:21,962 INFO L268 CegarLoopResult]: For program point L553(lines 553 568) no Hoare annotation was computed. [2020-07-21 23:04:21,962 INFO L268 CegarLoopResult]: For program point L1215(lines 1215 1226) no Hoare annotation was computed. [2020-07-21 23:04:21,962 INFO L268 CegarLoopResult]: For program point L1149(lines 1149 1164) no Hoare annotation was computed. [2020-07-21 23:04:21,962 INFO L268 CegarLoopResult]: For program point L1017(lines 1017 1032) no Hoare annotation was computed. [2020-07-21 23:04:21,962 INFO L268 CegarLoopResult]: For program point L687(lines 687 689) no Hoare annotation was computed. [2020-07-21 23:04:21,962 INFO L268 CegarLoopResult]: For program point L555(lines 555 566) no Hoare annotation was computed. [2020-07-21 23:04:21,962 INFO L268 CegarLoopResult]: For program point L489(lines 489 504) no Hoare annotation was computed. [2020-07-21 23:04:21,962 INFO L268 CegarLoopResult]: For program point L1151(lines 1151 1162) no Hoare annotation was computed. [2020-07-21 23:04:21,963 INFO L268 CegarLoopResult]: For program point L1085(lines 1085 1100) no Hoare annotation was computed. [2020-07-21 23:04:21,963 INFO L268 CegarLoopResult]: For program point L1019(lines 1019 1030) no Hoare annotation was computed. [2020-07-21 23:04:21,963 INFO L268 CegarLoopResult]: For program point L953(lines 953 968) no Hoare annotation was computed. [2020-07-21 23:04:21,963 INFO L268 CegarLoopResult]: For program point L623(lines 623 625) no Hoare annotation was computed. [2020-07-21 23:04:21,963 INFO L268 CegarLoopResult]: For program point L491(lines 491 502) no Hoare annotation was computed. [2020-07-21 23:04:21,963 INFO L268 CegarLoopResult]: For program point L425(lines 425 440) no Hoare annotation was computed. [2020-07-21 23:04:21,963 INFO L268 CegarLoopResult]: For program point L293(lines 293 308) no Hoare annotation was computed. [2020-07-21 23:04:21,963 INFO L268 CegarLoopResult]: For program point L1219(lines 1219 1221) no Hoare annotation was computed. [2020-07-21 23:04:21,963 INFO L268 CegarLoopResult]: For program point L1087(lines 1087 1098) no Hoare annotation was computed. [2020-07-21 23:04:21,964 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 16 1255) the Hoare annotation is: true [2020-07-21 23:04:21,964 INFO L268 CegarLoopResult]: For program point L955(lines 955 966) no Hoare annotation was computed. [2020-07-21 23:04:21,964 INFO L268 CegarLoopResult]: For program point L889(lines 889 904) no Hoare annotation was computed. [2020-07-21 23:04:21,964 INFO L268 CegarLoopResult]: For program point L559(lines 559 561) no Hoare annotation was computed. [2020-07-21 23:04:21,964 INFO L268 CegarLoopResult]: For program point L427(lines 427 438) no Hoare annotation was computed. [2020-07-21 23:04:21,964 INFO L268 CegarLoopResult]: For program point L361(lines 361 376) no Hoare annotation was computed. [2020-07-21 23:04:21,964 INFO L268 CegarLoopResult]: For program point L295(lines 295 306) no Hoare annotation was computed. [2020-07-21 23:04:21,965 INFO L268 CegarLoopResult]: For program point L229(lines 229 244) no Hoare annotation was computed. [2020-07-21 23:04:21,965 INFO L268 CegarLoopResult]: For program point L97(lines 97 112) no Hoare annotation was computed. [2020-07-21 23:04:21,965 INFO L268 CegarLoopResult]: For program point L1155(lines 1155 1157) no Hoare annotation was computed. [2020-07-21 23:04:21,965 INFO L268 CegarLoopResult]: For program point L1023(lines 1023 1025) no Hoare annotation was computed. [2020-07-21 23:04:21,965 INFO L264 CegarLoopResult]: At program point L32-2(lines 32 1250) the Hoare annotation is: (let ((.cse0 (= 0 main_~this_m_conn_data_listener~0)) (.cse1 (<= 1 main_~this_m_conn~0)) (.cse2 (<= 1 main_~this_m_delta~0))) (or (and (<= 4 main_~q~0) .cse0 .cse1 .cse2) (and (= 0 main_~q~0) (= 0 main_~this_m_conn~0) .cse0 .cse2) (and (<= 3 main_~q~0) (<= 1 main_~this_m_conn_data_listener~0) .cse1 .cse2 (<= main_~q~0 3)))) [2020-07-21 23:04:21,965 INFO L268 CegarLoopResult]: For program point L32-3(lines 32 1250) no Hoare annotation was computed. [2020-07-21 23:04:21,966 INFO L268 CegarLoopResult]: For program point L891(lines 891 902) no Hoare annotation was computed. [2020-07-21 23:04:21,966 INFO L268 CegarLoopResult]: For program point L825(lines 825 840) no Hoare annotation was computed. [2020-07-21 23:04:21,966 INFO L268 CegarLoopResult]: For program point L495(lines 495 497) no Hoare annotation was computed. [2020-07-21 23:04:21,966 INFO L268 CegarLoopResult]: For program point L363(lines 363 374) no Hoare annotation was computed. [2020-07-21 23:04:21,966 INFO L268 CegarLoopResult]: For program point L231(lines 231 242) no Hoare annotation was computed. [2020-07-21 23:04:21,966 INFO L268 CegarLoopResult]: For program point L165(lines 165 180) no Hoare annotation was computed. [2020-07-21 23:04:21,966 INFO L268 CegarLoopResult]: For program point L99(lines 99 110) no Hoare annotation was computed. [2020-07-21 23:04:21,966 INFO L268 CegarLoopResult]: For program point L1091(lines 1091 1093) no Hoare annotation was computed. [2020-07-21 23:04:21,967 INFO L268 CegarLoopResult]: For program point L959(lines 959 961) no Hoare annotation was computed. [2020-07-21 23:04:21,967 INFO L268 CegarLoopResult]: For program point L827(lines 827 838) no Hoare annotation was computed. [2020-07-21 23:04:21,967 INFO L268 CegarLoopResult]: For program point L761(lines 761 776) no Hoare annotation was computed. [2020-07-21 23:04:21,967 INFO L268 CegarLoopResult]: For program point L431(lines 431 433) no Hoare annotation was computed. [2020-07-21 23:04:21,967 INFO L268 CegarLoopResult]: For program point L299(lines 299 301) no Hoare annotation was computed. [2020-07-21 23:04:21,967 INFO L268 CegarLoopResult]: For program point L167(lines 167 178) no Hoare annotation was computed. [2020-07-21 23:04:21,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:04:21 BoogieIcfgContainer [2020-07-21 23:04:21,997 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 23:04:22,000 INFO L168 Benchmark]: Toolchain (without parser) took 11888.60 ms. Allocated memory was 146.8 MB in the beginning and 362.3 MB in the end (delta: 215.5 MB). Free memory was 93.5 MB in the beginning and 179.1 MB in the end (delta: -85.6 MB). Peak memory consumption was 129.9 MB. Max. memory is 7.1 GB. [2020-07-21 23:04:22,001 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 146.8 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 23:04:22,001 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1538.91 ms. Allocated memory was 146.8 MB in the beginning and 236.5 MB in the end (delta: 89.7 MB). Free memory was 93.1 MB in the beginning and 137.8 MB in the end (delta: -44.7 MB). Peak memory consumption was 58.2 MB. Max. memory is 7.1 GB. [2020-07-21 23:04:22,002 INFO L168 Benchmark]: Boogie Preprocessor took 235.07 ms. Allocated memory is still 236.5 MB. Free memory was 137.8 MB in the beginning and 123.6 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-07-21 23:04:22,003 INFO L168 Benchmark]: RCFGBuilder took 2200.78 ms. Allocated memory was 236.5 MB in the beginning and 256.9 MB in the end (delta: 20.4 MB). Free memory was 123.6 MB in the beginning and 166.9 MB in the end (delta: -43.4 MB). Peak memory consumption was 61.1 MB. Max. memory is 7.1 GB. [2020-07-21 23:04:22,005 INFO L168 Benchmark]: TraceAbstraction took 7904.67 ms. Allocated memory was 256.9 MB in the beginning and 362.3 MB in the end (delta: 105.4 MB). Free memory was 165.0 MB in the beginning and 179.1 MB in the end (delta: -14.1 MB). Peak memory consumption was 91.3 MB. Max. memory is 7.1 GB. [2020-07-21 23:04:22,011 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 146.8 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1538.91 ms. Allocated memory was 146.8 MB in the beginning and 236.5 MB in the end (delta: 89.7 MB). Free memory was 93.1 MB in the beginning and 137.8 MB in the end (delta: -44.7 MB). Peak memory consumption was 58.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 235.07 ms. Allocated memory is still 236.5 MB. Free memory was 137.8 MB in the beginning and 123.6 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2200.78 ms. Allocated memory was 236.5 MB in the beginning and 256.9 MB in the end (delta: 20.4 MB). Free memory was 123.6 MB in the beginning and 166.9 MB in the end (delta: -43.4 MB). Peak memory consumption was 61.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7904.67 ms. Allocated memory was 256.9 MB in the beginning and 362.3 MB in the end (delta: 105.4 MB). Free memory was 165.0 MB in the beginning and 179.1 MB in the end (delta: -14.1 MB). Peak memory consumption was 91.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1254]: 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: 16]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: (((((4 <= q && 0 == this_m_conn_data_listener) && 1 <= this_m_conn) && 1 <= this_m_delta) || (((0 == this_m_conn && 0 == this_m_conn_data_listener) && 1 <= this_m_delta) && 2 == q)) || (((0 == q && 0 == this_m_conn) && 0 == this_m_conn_data_listener) && 1 <= this_m_delta)) || ((((3 <= q && 1 <= this_m_conn_data_listener) && 1 <= this_m_conn) && 1 <= this_m_delta) && q <= 3) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((((4 <= q && 0 == this_m_conn_data_listener) && 1 <= this_m_conn) && 1 <= this_m_delta) || (((0 == q && 0 == this_m_conn) && 0 == this_m_conn_data_listener) && 1 <= this_m_delta)) || ((((3 <= q && 1 <= this_m_conn_data_listener) && 1 <= this_m_conn) && 1 <= this_m_delta) && q <= 3) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 242 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.4s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4077 SDtfs, 2146 SDslu, 1591 SDs, 0 SdLazy, 685 SolverSat, 405 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 327 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=404occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 27 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 14 NumberOfFragments, 104 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 30 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 339 NumberOfCodeBlocks, 308 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 327 ConstructedInterpolants, 0 QuantifiedInterpolants, 15099 SizeOfPredicates, 10 NumberOfNonLiveVariables, 2382 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 53/53 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...