/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --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 [2020-07-20 14:11:50,141 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 14:11:50,144 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 14:11:50,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 14:11:50,164 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 14:11:50,166 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 14:11:50,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 14:11:50,169 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 14:11:50,170 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 14:11:50,171 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 14:11:50,172 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 14:11:50,173 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 14:11:50,174 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 14:11:50,175 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 14:11:50,176 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 14:11:50,177 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 14:11:50,177 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 14:11:50,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 14:11:50,180 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 14:11:50,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 14:11:50,183 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 14:11:50,185 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 14:11:50,186 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 14:11:50,186 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 14:11:50,189 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 14:11:50,197 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 14:11:50,198 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 14:11:50,198 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 14:11:50,199 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 14:11:50,214 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 14:11:50,214 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 14:11:50,216 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 14:11:50,216 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 14:11:50,216 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 14:11:50,216 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 14:11:50,216 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 14:11:50,217 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 14:11:50,217 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 14:11:50,217 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 14:11:50,217 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 14:11:50,217 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 14:11:50,218 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 14:11:50,218 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 14:11:50,218 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 14:11:50,218 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 14:11:50,218 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 14:11:50,219 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 14:11:50,219 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 14:11:50,219 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 14:11:50,219 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 14:11:50,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 14:11:50,220 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 14:11:50,220 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 14:11:50,220 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 14:11:50,220 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 14:11:50,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:11:50,221 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 14:11:50,221 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 14:11:50,221 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 14:11:50,498 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 14:11:50,513 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 14:11:50,517 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 14:11:50,518 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 14:11:50,519 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 14:11:50,519 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_accelerometer_1.c [2020-07-20 14:11:50,585 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd4dcd47b/f3e63657af6a42c8bcc36bfdaa4a638c/FLAG906d6bebd [2020-07-20 14:11:51,318 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 14:11:51,319 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/psyco/psyco_accelerometer_1.c [2020-07-20 14:11:51,349 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd4dcd47b/f3e63657af6a42c8bcc36bfdaa4a638c/FLAG906d6bebd [2020-07-20 14:11:51,382 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd4dcd47b/f3e63657af6a42c8bcc36bfdaa4a638c [2020-07-20 14:11:51,395 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 14:11:51,400 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 14:11:51,401 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 14:11:51,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 14:11:51,405 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 14:11:51,406 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:11:51" (1/1) ... [2020-07-20 14:11:51,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cd9a8b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:11:51, skipping insertion in model container [2020-07-20 14:11:51,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:11:51" (1/1) ... [2020-07-20 14:11:51,418 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 14:11:51,530 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 14:11:52,491 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:11:52,499 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 14:11:52,851 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:11:52,868 INFO L208 MainTranslator]: Completed translation [2020-07-20 14:11:52,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:11:52 WrapperNode [2020-07-20 14:11:52,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 14:11:52,871 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 14:11:52,871 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 14:11:52,871 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 14:11:52,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:11:52" (1/1) ... [2020-07-20 14:11:52,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:11:52" (1/1) ... [2020-07-20 14:11:52,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:11:52" (1/1) ... [2020-07-20 14:11:52,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:11:52" (1/1) ... [2020-07-20 14:11:53,015 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:11:52" (1/1) ... [2020-07-20 14:11:53,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:11:52" (1/1) ... [2020-07-20 14:11:53,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:11:52" (1/1) ... [2020-07-20 14:11:53,093 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 14:11:53,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 14:11:53,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 14:11:53,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 14:11:53,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:11:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 14:11:53,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 14:11:53,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 14:11:53,169 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 14:11:53,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 14:11:53,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 14:11:53,170 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 14:11:53,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 14:11:53,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 14:11:55,021 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 14:11:55,022 INFO L295 CfgBuilder]: Removed 21 assume(true) statements. [2020-07-20 14:11:55,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:11:55 BoogieIcfgContainer [2020-07-20 14:11:55,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 14:11:55,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 14:11:55,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 14:11:55,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 14:11:55,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 02:11:51" (1/3) ... [2020-07-20 14:11:55,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c130651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:11:55, skipping insertion in model container [2020-07-20 14:11:55,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:11:52" (2/3) ... [2020-07-20 14:11:55,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c130651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:11:55, skipping insertion in model container [2020-07-20 14:11:55,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:11:55" (3/3) ... [2020-07-20 14:11:55,037 INFO L109 eAbstractionObserver]: Analyzing ICFG psyco_accelerometer_1.c [2020-07-20 14:11:55,048 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 14:11:55,057 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 14:11:55,072 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 14:11:55,098 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 14:11:55,098 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 14:11:55,098 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 14:11:55,099 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 14:11:55,099 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 14:11:55,099 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 14:11:55,099 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 14:11:55,099 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 14:11:55,129 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states. [2020-07-20 14:11:55,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-20 14:11:55,135 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:11:55,136 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:11:55,137 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:11:55,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:11:55,143 INFO L82 PathProgramCache]: Analyzing trace with hash -358841446, now seen corresponding path program 1 times [2020-07-20 14:11:55,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:11:55,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203461313] [2020-07-20 14:11:55,153 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:11:55,250 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 14:11:55,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:11:55,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 14:11:55,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:11:55,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:11:55,281 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:11:55,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203461313] [2020-07-20 14:11:55,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:11:55,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 14:11:55,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652291519] [2020-07-20 14:11:55,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 14:11:55,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:11:55,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 14:11:55,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 14:11:55,307 INFO L87 Difference]: Start difference. First operand 242 states. Second operand 2 states. [2020-07-20 14:11:55,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:11:55,357 INFO L93 Difference]: Finished difference Result 469 states and 916 transitions. [2020-07-20 14:11:55,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 14:11:55,359 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-07-20 14:11:55,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:11:55,374 INFO L225 Difference]: With dead ends: 469 [2020-07-20 14:11:55,375 INFO L226 Difference]: Without dead ends: 228 [2020-07-20 14:11:55,383 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 [2020-07-20 14:11:55,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-07-20 14:11:55,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2020-07-20 14:11:55,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-07-20 14:11:55,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 397 transitions. [2020-07-20 14:11:55,449 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 397 transitions. Word has length 13 [2020-07-20 14:11:55,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:11:55,449 INFO L479 AbstractCegarLoop]: Abstraction has 228 states and 397 transitions. [2020-07-20 14:11:55,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 14:11:55,449 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 397 transitions. [2020-07-20 14:11:55,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-20 14:11:55,450 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:11:55,451 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:11:55,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:11:55,652 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:11:55,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:11:55,652 INFO L82 PathProgramCache]: Analyzing trace with hash -2001683715, now seen corresponding path program 1 times [2020-07-20 14:11:55,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:11:55,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464077366] [2020-07-20 14:11:55,653 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:11:55,702 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 14:11:55,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:11:55,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 14:11:55,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:11:55,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:11:55,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:11:55,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464077366] [2020-07-20 14:11:55,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:11:55,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:11:55,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255533128] [2020-07-20 14:11:55,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:11:55,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:11:55,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:11:55,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:11:55,748 INFO L87 Difference]: Start difference. First operand 228 states and 397 transitions. Second operand 3 states. [2020-07-20 14:11:55,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:11:55,940 INFO L93 Difference]: Finished difference Result 457 states and 800 transitions. [2020-07-20 14:11:55,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:11:55,941 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-07-20 14:11:55,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:11:55,943 INFO L225 Difference]: With dead ends: 457 [2020-07-20 14:11:55,944 INFO L226 Difference]: Without dead ends: 235 [2020-07-20 14:11:55,946 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 [2020-07-20 14:11:55,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-07-20 14:11:55,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2020-07-20 14:11:55,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-07-20 14:11:55,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 405 transitions. [2020-07-20 14:11:55,962 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 405 transitions. Word has length 14 [2020-07-20 14:11:55,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:11:55,963 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 405 transitions. [2020-07-20 14:11:55,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:11:55,963 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 405 transitions. [2020-07-20 14:11:55,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-20 14:11:55,964 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:11:55,964 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:11:56,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:11:56,166 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:11:56,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:11:56,166 INFO L82 PathProgramCache]: Analyzing trace with hash 912246429, now seen corresponding path program 1 times [2020-07-20 14:11:56,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:11:56,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806273320] [2020-07-20 14:11:56,167 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:11:56,222 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 14:11:56,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:11:56,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 14:11:56,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:11:56,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:11:56,238 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:11:56,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1806273320] [2020-07-20 14:11:56,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:11:56,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:11:56,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611765745] [2020-07-20 14:11:56,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:11:56,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:11:56,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:11:56,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:11:56,242 INFO L87 Difference]: Start difference. First operand 235 states and 405 transitions. Second operand 3 states. [2020-07-20 14:11:56,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:11:56,445 INFO L93 Difference]: Finished difference Result 449 states and 784 transitions. [2020-07-20 14:11:56,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:11:56,447 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-20 14:11:56,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:11:56,454 INFO L225 Difference]: With dead ends: 449 [2020-07-20 14:11:56,455 INFO L226 Difference]: Without dead ends: 220 [2020-07-20 14:11:56,456 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 [2020-07-20 14:11:56,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-07-20 14:11:56,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2020-07-20 14:11:56,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-07-20 14:11:56,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 383 transitions. [2020-07-20 14:11:56,483 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 383 transitions. Word has length 19 [2020-07-20 14:11:56,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:11:56,483 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 383 transitions. [2020-07-20 14:11:56,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:11:56,486 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 383 transitions. [2020-07-20 14:11:56,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-20 14:11:56,487 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:11:56,487 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] [2020-07-20 14:11:56,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:11:56,692 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:11:56,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:11:56,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1491178682, now seen corresponding path program 1 times [2020-07-20 14:11:56,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:11:56,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [23455562] [2020-07-20 14:11:56,693 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:11:56,769 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 14:11:56,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:11:56,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 14:11:56,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:11:56,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:11:56,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:11:56,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [23455562] [2020-07-20 14:11:56,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:11:56,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:11:56,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737870477] [2020-07-20 14:11:56,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:11:56,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:11:56,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:11:56,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:11:56,788 INFO L87 Difference]: Start difference. First operand 220 states and 383 transitions. Second operand 3 states. [2020-07-20 14:11:57,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:11:57,070 INFO L93 Difference]: Finished difference Result 622 states and 1107 transitions. [2020-07-20 14:11:57,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:11:57,071 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-07-20 14:11:57,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:11:57,074 INFO L225 Difference]: With dead ends: 622 [2020-07-20 14:11:57,074 INFO L226 Difference]: Without dead ends: 414 [2020-07-20 14:11:57,075 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 [2020-07-20 14:11:57,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2020-07-20 14:11:57,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 408. [2020-07-20 14:11:57,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 408 states. [2020-07-20 14:11:57,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 727 transitions. [2020-07-20 14:11:57,092 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 727 transitions. Word has length 22 [2020-07-20 14:11:57,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:11:57,093 INFO L479 AbstractCegarLoop]: Abstraction has 408 states and 727 transitions. [2020-07-20 14:11:57,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:11:57,093 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 727 transitions. [2020-07-20 14:11:57,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-20 14:11:57,094 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:11:57,095 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] [2020-07-20 14:11:57,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:11:57,310 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:11:57,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:11:57,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1582631867, now seen corresponding path program 1 times [2020-07-20 14:11:57,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:11:57,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204474365] [2020-07-20 14:11:57,311 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:11:57,360 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 14:11:57,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:11:57,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 14:11:57,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:11:57,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:11:57,396 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:11:57,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204474365] [2020-07-20 14:11:57,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:11:57,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:11:57,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960576931] [2020-07-20 14:11:57,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:11:57,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:11:57,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:11:57,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:11:57,406 INFO L87 Difference]: Start difference. First operand 408 states and 727 transitions. Second operand 3 states. [2020-07-20 14:11:57,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:11:57,648 INFO L93 Difference]: Finished difference Result 650 states and 1149 transitions. [2020-07-20 14:11:57,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:11:57,648 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-07-20 14:11:57,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:11:57,650 INFO L225 Difference]: With dead ends: 650 [2020-07-20 14:11:57,651 INFO L226 Difference]: Without dead ends: 258 [2020-07-20 14:11:57,652 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 [2020-07-20 14:11:57,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-07-20 14:11:57,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 256. [2020-07-20 14:11:57,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-07-20 14:11:57,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 435 transitions. [2020-07-20 14:11:57,664 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 435 transitions. Word has length 23 [2020-07-20 14:11:57,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:11:57,664 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 435 transitions. [2020-07-20 14:11:57,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:11:57,665 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 435 transitions. [2020-07-20 14:11:57,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-20 14:11:57,665 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:11:57,666 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] [2020-07-20 14:11:57,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:11:57,874 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:11:57,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:11:57,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1006681014, now seen corresponding path program 1 times [2020-07-20 14:11:57,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:11:57,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119555783] [2020-07-20 14:11:57,877 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:11:57,938 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:11:57,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:11:57,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 14:11:57,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:11:57,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:11:57,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:11:57,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119555783] [2020-07-20 14:11:57,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:11:57,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:11:57,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455505584] [2020-07-20 14:11:57,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:11:57,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:11:57,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:11:57,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:11:57,963 INFO L87 Difference]: Start difference. First operand 256 states and 435 transitions. Second operand 3 states. [2020-07-20 14:11:58,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:11:58,128 INFO L93 Difference]: Finished difference Result 258 states and 436 transitions. [2020-07-20 14:11:58,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:11:58,131 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-07-20 14:11:58,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:11:58,133 INFO L225 Difference]: With dead ends: 258 [2020-07-20 14:11:58,133 INFO L226 Difference]: Without dead ends: 256 [2020-07-20 14:11:58,134 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 [2020-07-20 14:11:58,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-07-20 14:11:58,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2020-07-20 14:11:58,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-07-20 14:11:58,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 427 transitions. [2020-07-20 14:11:58,146 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 427 transitions. Word has length 23 [2020-07-20 14:11:58,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:11:58,147 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 427 transitions. [2020-07-20 14:11:58,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:11:58,147 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 427 transitions. [2020-07-20 14:11:58,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 14:11:58,151 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:11:58,151 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] [2020-07-20 14:11:58,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:11:58,359 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:11:58,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:11:58,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1124944987, now seen corresponding path program 1 times [2020-07-20 14:11:58,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:11:58,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373292316] [2020-07-20 14:11:58,361 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:11:58,417 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 14:11:58,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:11:58,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 14:11:58,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:11:58,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:11:58,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:11:58,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373292316] [2020-07-20 14:11:58,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:11:58,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:11:58,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590817304] [2020-07-20 14:11:58,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:11:58,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:11:58,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:11:58,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:11:58,443 INFO L87 Difference]: Start difference. First operand 256 states and 427 transitions. Second operand 3 states. [2020-07-20 14:11:59,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:11:59,089 INFO L93 Difference]: Finished difference Result 672 states and 1133 transitions. [2020-07-20 14:11:59,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:11:59,091 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-07-20 14:11:59,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:11:59,097 INFO L225 Difference]: With dead ends: 672 [2020-07-20 14:11:59,097 INFO L226 Difference]: Without dead ends: 428 [2020-07-20 14:11:59,099 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 [2020-07-20 14:11:59,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2020-07-20 14:11:59,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 415. [2020-07-20 14:11:59,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2020-07-20 14:11:59,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 631 transitions. [2020-07-20 14:11:59,121 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 631 transitions. Word has length 26 [2020-07-20 14:11:59,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:11:59,124 INFO L479 AbstractCegarLoop]: Abstraction has 415 states and 631 transitions. [2020-07-20 14:11:59,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:11:59,124 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 631 transitions. [2020-07-20 14:11:59,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-20 14:11:59,134 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:11:59,134 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] [2020-07-20 14:11:59,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:11:59,343 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:11:59,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:11:59,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1803598039, now seen corresponding path program 1 times [2020-07-20 14:11:59,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:11:59,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138221296] [2020-07-20 14:11:59,344 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:11:59,405 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 14:11:59,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:11:59,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 14:11:59,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:11:59,426 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 14:11:59,426 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:11:59,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2138221296] [2020-07-20 14:11:59,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:11:59,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:11:59,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016111419] [2020-07-20 14:11:59,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:11:59,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:11:59,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:11:59,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:11:59,429 INFO L87 Difference]: Start difference. First operand 415 states and 631 transitions. Second operand 3 states. [2020-07-20 14:11:59,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:11:59,487 INFO L93 Difference]: Finished difference Result 749 states and 1150 transitions. [2020-07-20 14:11:59,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:11:59,487 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-07-20 14:11:59,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:11:59,490 INFO L225 Difference]: With dead ends: 749 [2020-07-20 14:11:59,490 INFO L226 Difference]: Without dead ends: 350 [2020-07-20 14:11:59,491 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 [2020-07-20 14:11:59,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2020-07-20 14:11:59,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 350. [2020-07-20 14:11:59,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2020-07-20 14:11:59,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 535 transitions. [2020-07-20 14:11:59,503 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 535 transitions. Word has length 36 [2020-07-20 14:11:59,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:11:59,503 INFO L479 AbstractCegarLoop]: Abstraction has 350 states and 535 transitions. [2020-07-20 14:11:59,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:11:59,503 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 535 transitions. [2020-07-20 14:11:59,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-20 14:11:59,505 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:11:59,505 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] [2020-07-20 14:11:59,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:11:59,719 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:11:59,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:11:59,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1771198676, now seen corresponding path program 1 times [2020-07-20 14:11:59,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:11:59,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963170082] [2020-07-20 14:11:59,723 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:11:59,794 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:11:59,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:11:59,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 14:11:59,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:11:59,811 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 14:11:59,812 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:11:59,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963170082] [2020-07-20 14:11:59,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:11:59,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:11:59,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263580382] [2020-07-20 14:11:59,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:11:59,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:11:59,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:11:59,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:11:59,817 INFO L87 Difference]: Start difference. First operand 350 states and 535 transitions. Second operand 3 states. [2020-07-20 14:11:59,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:11:59,880 INFO L93 Difference]: Finished difference Result 678 states and 1046 transitions. [2020-07-20 14:11:59,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:11:59,882 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-07-20 14:11:59,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:11:59,884 INFO L225 Difference]: With dead ends: 678 [2020-07-20 14:11:59,885 INFO L226 Difference]: Without dead ends: 344 [2020-07-20 14:11:59,886 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 [2020-07-20 14:11:59,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2020-07-20 14:11:59,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2020-07-20 14:11:59,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2020-07-20 14:11:59,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 515 transitions. [2020-07-20 14:11:59,907 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 515 transitions. Word has length 37 [2020-07-20 14:11:59,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:11:59,908 INFO L479 AbstractCegarLoop]: Abstraction has 344 states and 515 transitions. [2020-07-20 14:11:59,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:11:59,908 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 515 transitions. [2020-07-20 14:11:59,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-20 14:11:59,914 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:11:59,914 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] [2020-07-20 14:12:00,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:12:00,128 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:12:00,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:12:00,130 INFO L82 PathProgramCache]: Analyzing trace with hash -2025838196, now seen corresponding path program 1 times [2020-07-20 14:12:00,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:12:00,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236854202] [2020-07-20 14:12:00,131 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:12:00,202 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:12:00,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:12:00,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 14:12:00,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:12:00,218 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 14:12:00,218 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:12:00,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236854202] [2020-07-20 14:12:00,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:12:00,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:12:00,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107661664] [2020-07-20 14:12:00,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:12:00,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:12:00,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:12:00,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:12:00,220 INFO L87 Difference]: Start difference. First operand 344 states and 515 transitions. Second operand 3 states. [2020-07-20 14:12:00,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:12:00,670 INFO L93 Difference]: Finished difference Result 387 states and 556 transitions. [2020-07-20 14:12:00,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:12:00,671 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2020-07-20 14:12:00,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:12:00,678 INFO L225 Difference]: With dead ends: 387 [2020-07-20 14:12:00,678 INFO L226 Difference]: Without dead ends: 350 [2020-07-20 14:12:00,679 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 [2020-07-20 14:12:00,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2020-07-20 14:12:00,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 344. [2020-07-20 14:12:00,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2020-07-20 14:12:00,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 479 transitions. [2020-07-20 14:12:00,698 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 479 transitions. Word has length 41 [2020-07-20 14:12:00,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:12:00,699 INFO L479 AbstractCegarLoop]: Abstraction has 344 states and 479 transitions. [2020-07-20 14:12:00,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:12:00,699 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 479 transitions. [2020-07-20 14:12:00,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-20 14:12:00,702 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:12:00,702 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] [2020-07-20 14:12:00,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:12:00,907 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:12:00,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:12:00,907 INFO L82 PathProgramCache]: Analyzing trace with hash -197451388, now seen corresponding path program 1 times [2020-07-20 14:12:00,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:12:00,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924769182] [2020-07-20 14:12:00,908 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:12:01,103 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 14:12:01,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:12:01,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 14:12:01,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:12:01,116 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 14:12:01,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:12:01,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924769182] [2020-07-20 14:12:01,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:12:01,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:12:01,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826667638] [2020-07-20 14:12:01,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:12:01,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:12:01,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:12:01,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:12:01,118 INFO L87 Difference]: Start difference. First operand 344 states and 479 transitions. Second operand 3 states. [2020-07-20 14:12:01,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:12:01,180 INFO L93 Difference]: Finished difference Result 653 states and 911 transitions. [2020-07-20 14:12:01,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:12:01,181 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2020-07-20 14:12:01,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:12:01,184 INFO L225 Difference]: With dead ends: 653 [2020-07-20 14:12:01,184 INFO L226 Difference]: Without dead ends: 325 [2020-07-20 14:12:01,186 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 [2020-07-20 14:12:01,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-07-20 14:12:01,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2020-07-20 14:12:01,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2020-07-20 14:12:01,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 448 transitions. [2020-07-20 14:12:01,198 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 448 transitions. Word has length 42 [2020-07-20 14:12:01,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:12:01,198 INFO L479 AbstractCegarLoop]: Abstraction has 325 states and 448 transitions. [2020-07-20 14:12:01,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:12:01,199 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 448 transitions. [2020-07-20 14:12:01,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-07-20 14:12:01,200 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:12:01,200 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] [2020-07-20 14:12:01,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:12:01,414 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:12:01,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:12:01,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1099613084, now seen corresponding path program 1 times [2020-07-20 14:12:01,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:12:01,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [156824436] [2020-07-20 14:12:01,415 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 [2020-07-20 14:12:01,480 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 14:12:01,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:12:01,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 14:12:01,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:12:01,496 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 14:12:01,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:12:01,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [156824436] [2020-07-20 14:12:01,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:12:01,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:12:01,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164240664] [2020-07-20 14:12:01,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:12:01,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:12:01,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:12:01,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:12:01,501 INFO L87 Difference]: Start difference. First operand 325 states and 448 transitions. Second operand 3 states. [2020-07-20 14:12:01,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:12:01,549 INFO L93 Difference]: Finished difference Result 494 states and 691 transitions. [2020-07-20 14:12:01,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:12:01,550 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2020-07-20 14:12:01,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:12:01,550 INFO L225 Difference]: With dead ends: 494 [2020-07-20 14:12:01,550 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 14:12:01,552 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 [2020-07-20 14:12:01,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 14:12:01,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 14:12:01,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 14:12:01,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 14:12:01,554 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2020-07-20 14:12:01,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:12:01,554 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 14:12:01,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:12:01,554 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 14:12:01,554 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 14:12:01,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:12:01,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 14:12:02,109 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 25 [2020-07-20 14:12:02,113 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 14:12:02,113 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-20 14:12:02,113 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 14:12:02,113 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 14:12:02,113 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 14:12:02,113 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 14:12:02,113 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 14:12:02,114 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 16 1255) no Hoare annotation was computed. [2020-07-20 14:12:02,114 INFO L268 CegarLoopResult]: For program point L895(lines 895 897) no Hoare annotation was computed. [2020-07-20 14:12:02,114 INFO L268 CegarLoopResult]: For program point L763(lines 763 774) no Hoare annotation was computed. [2020-07-20 14:12:02,114 INFO L268 CegarLoopResult]: For program point L697(lines 697 712) no Hoare annotation was computed. [2020-07-20 14:12:02,114 INFO L268 CegarLoopResult]: For program point L367(lines 367 369) no Hoare annotation was computed. [2020-07-20 14:12:02,114 INFO L268 CegarLoopResult]: For program point L235(lines 235 237) no Hoare annotation was computed. [2020-07-20 14:12:02,114 INFO L268 CegarLoopResult]: For program point L103(lines 103 105) no Hoare annotation was computed. [2020-07-20 14:12:02,114 INFO L268 CegarLoopResult]: For program point L831(lines 831 833) no Hoare annotation was computed. [2020-07-20 14:12:02,115 INFO L268 CegarLoopResult]: For program point L699(lines 699 710) no Hoare annotation was computed. [2020-07-20 14:12:02,115 INFO L268 CegarLoopResult]: For program point L633(lines 633 648) no Hoare annotation was computed. [2020-07-20 14:12:02,115 INFO L268 CegarLoopResult]: For program point L171(lines 171 173) no Hoare annotation was computed. [2020-07-20 14:12:02,115 INFO L268 CegarLoopResult]: For program point L1229(lines 1229 1244) no Hoare annotation was computed. [2020-07-20 14:12:02,115 INFO L268 CegarLoopResult]: For program point L767(lines 767 769) no Hoare annotation was computed. [2020-07-20 14:12:02,115 INFO L268 CegarLoopResult]: For program point L635(lines 635 646) no Hoare annotation was computed. [2020-07-20 14:12:02,115 INFO L268 CegarLoopResult]: For program point L569(lines 569 584) no Hoare annotation was computed. [2020-07-20 14:12:02,115 INFO L268 CegarLoopResult]: For program point L1231(lines 1231 1242) no Hoare annotation was computed. [2020-07-20 14:12:02,116 INFO L268 CegarLoopResult]: For program point L1165(lines 1165 1180) no Hoare annotation was computed. [2020-07-20 14:12:02,116 INFO L268 CegarLoopResult]: For program point L1033(lines 1033 1048) no Hoare annotation was computed. [2020-07-20 14:12:02,116 INFO L268 CegarLoopResult]: For program point L703(lines 703 705) no Hoare annotation was computed. [2020-07-20 14:12:02,116 INFO L268 CegarLoopResult]: For program point L571(lines 571 582) no Hoare annotation was computed. [2020-07-20 14:12:02,116 INFO L268 CegarLoopResult]: For program point L505(lines 505 520) no Hoare annotation was computed. [2020-07-20 14:12:02,116 INFO L268 CegarLoopResult]: For program point L1167(lines 1167 1178) no Hoare annotation was computed. [2020-07-20 14:12:02,116 INFO L268 CegarLoopResult]: For program point L1101(lines 1101 1116) no Hoare annotation was computed. [2020-07-20 14:12:02,116 INFO L268 CegarLoopResult]: For program point L44(lines 44 63) no Hoare annotation was computed. [2020-07-20 14:12:02,117 INFO L268 CegarLoopResult]: For program point L1035(lines 1035 1046) no Hoare annotation was computed. [2020-07-20 14:12:02,117 INFO L268 CegarLoopResult]: For program point L969(lines 969 984) no Hoare annotation was computed. [2020-07-20 14:12:02,117 INFO L268 CegarLoopResult]: For program point L639(lines 639 641) no Hoare annotation was computed. [2020-07-20 14:12:02,117 INFO L268 CegarLoopResult]: For program point L507(lines 507 518) no Hoare annotation was computed. [2020-07-20 14:12:02,117 INFO L268 CegarLoopResult]: For program point L441(lines 441 456) no Hoare annotation was computed. [2020-07-20 14:12:02,117 INFO L268 CegarLoopResult]: For program point L309(lines 309 324) no Hoare annotation was computed. [2020-07-20 14:12:02,117 INFO L268 CegarLoopResult]: For program point L45(lines 45 60) no Hoare annotation was computed. [2020-07-20 14:12:02,118 INFO L268 CegarLoopResult]: For program point L1235(lines 1235 1237) no Hoare annotation was computed. [2020-07-20 14:12:02,118 INFO L268 CegarLoopResult]: For program point L1103(lines 1103 1114) no Hoare annotation was computed. [2020-07-20 14:12:02,118 INFO L268 CegarLoopResult]: For program point L971(lines 971 982) no Hoare annotation was computed. [2020-07-20 14:12:02,118 INFO L268 CegarLoopResult]: For program point L905(lines 905 920) no Hoare annotation was computed. [2020-07-20 14:12:02,118 INFO L268 CegarLoopResult]: For program point L575(lines 575 577) no Hoare annotation was computed. [2020-07-20 14:12:02,118 INFO L268 CegarLoopResult]: For program point L443(lines 443 454) no Hoare annotation was computed. [2020-07-20 14:12:02,118 INFO L268 CegarLoopResult]: For program point L377(lines 377 392) no Hoare annotation was computed. [2020-07-20 14:12:02,118 INFO L268 CegarLoopResult]: For program point L311(lines 311 322) no Hoare annotation was computed. [2020-07-20 14:12:02,119 INFO L268 CegarLoopResult]: For program point L245(lines 245 260) no Hoare annotation was computed. [2020-07-20 14:12:02,119 INFO L264 CegarLoopResult]: At program point L1236(lines 16 1255) the Hoare annotation is: false [2020-07-20 14:12:02,119 INFO L268 CegarLoopResult]: For program point L113(lines 113 128) no Hoare annotation was computed. [2020-07-20 14:12:02,119 INFO L268 CegarLoopResult]: For program point L47(lines 47 58) no Hoare annotation was computed. [2020-07-20 14:12:02,119 INFO L268 CegarLoopResult]: For program point L1171(lines 1171 1173) no Hoare annotation was computed. [2020-07-20 14:12:02,119 INFO L268 CegarLoopResult]: For program point L1039(lines 1039 1041) no Hoare annotation was computed. [2020-07-20 14:12:02,119 INFO L268 CegarLoopResult]: For program point L907(lines 907 918) no Hoare annotation was computed. [2020-07-20 14:12:02,119 INFO L268 CegarLoopResult]: For program point L841(lines 841 856) no Hoare annotation was computed. [2020-07-20 14:12:02,120 INFO L268 CegarLoopResult]: For program point L511(lines 511 513) no Hoare annotation was computed. [2020-07-20 14:12:02,120 INFO L268 CegarLoopResult]: For program point L379(lines 379 390) no Hoare annotation was computed. [2020-07-20 14:12:02,120 INFO L268 CegarLoopResult]: For program point L247(lines 247 258) no Hoare annotation was computed. [2020-07-20 14:12:02,120 INFO L268 CegarLoopResult]: For program point L181(lines 181 196) no Hoare annotation was computed. [2020-07-20 14:12:02,120 INFO L268 CegarLoopResult]: For program point L115(lines 115 126) no Hoare annotation was computed. [2020-07-20 14:12:02,120 INFO L268 CegarLoopResult]: For program point L1107(lines 1107 1109) no Hoare annotation was computed. [2020-07-20 14:12:02,120 INFO L268 CegarLoopResult]: For program point L975(lines 975 977) no Hoare annotation was computed. [2020-07-20 14:12:02,120 INFO L268 CegarLoopResult]: For program point L843(lines 843 854) no Hoare annotation was computed. [2020-07-20 14:12:02,121 INFO L268 CegarLoopResult]: For program point L777(lines 777 792) no Hoare annotation was computed. [2020-07-20 14:12:02,121 INFO L268 CegarLoopResult]: For program point L447(lines 447 449) no Hoare annotation was computed. [2020-07-20 14:12:02,121 INFO L268 CegarLoopResult]: For program point L315(lines 315 317) no Hoare annotation was computed. [2020-07-20 14:12:02,121 INFO L268 CegarLoopResult]: For program point L183(lines 183 194) no Hoare annotation was computed. [2020-07-20 14:12:02,121 INFO L268 CegarLoopResult]: For program point L51(lines 51 53) no Hoare annotation was computed. [2020-07-20 14:12:02,121 INFO L268 CegarLoopResult]: For program point L911(lines 911 913) no Hoare annotation was computed. [2020-07-20 14:12:02,121 INFO L268 CegarLoopResult]: For program point L779(lines 779 790) no Hoare annotation was computed. [2020-07-20 14:12:02,121 INFO L268 CegarLoopResult]: For program point L713(lines 713 728) no Hoare annotation was computed. [2020-07-20 14:12:02,122 INFO L268 CegarLoopResult]: For program point L383(lines 383 385) no Hoare annotation was computed. [2020-07-20 14:12:02,122 INFO L268 CegarLoopResult]: For program point L251(lines 251 253) no Hoare annotation was computed. [2020-07-20 14:12:02,122 INFO L268 CegarLoopResult]: For program point L119(lines 119 121) no Hoare annotation was computed. [2020-07-20 14:12:02,122 INFO L268 CegarLoopResult]: For program point L847(lines 847 849) no Hoare annotation was computed. [2020-07-20 14:12:02,122 INFO L268 CegarLoopResult]: For program point L715(lines 715 726) no Hoare annotation was computed. [2020-07-20 14:12:02,122 INFO L268 CegarLoopResult]: For program point L649(lines 649 664) no Hoare annotation was computed. [2020-07-20 14:12:02,122 INFO L268 CegarLoopResult]: For program point L187(lines 187 189) no Hoare annotation was computed. [2020-07-20 14:12:02,123 INFO L268 CegarLoopResult]: For program point L783(lines 783 785) no Hoare annotation was computed. [2020-07-20 14:12:02,123 INFO L268 CegarLoopResult]: For program point L651(lines 651 662) no Hoare annotation was computed. [2020-07-20 14:12:02,123 INFO L268 CegarLoopResult]: For program point L585(lines 585 600) no Hoare annotation was computed. [2020-07-20 14:12:02,123 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 (<= main_~q~0 0)) (and .cse3 (<= main_~q~0 2) (<= 2 main_~q~0) .cse0 .cse2) (and (<= 3 main_~q~0) (<= 1 main_~this_m_conn_data_listener~0) .cse1 .cse2 (<= main_~q~0 3)))) [2020-07-20 14:12:02,123 INFO L268 CegarLoopResult]: For program point L1181(lines 1181 1196) no Hoare annotation was computed. [2020-07-20 14:12:02,123 INFO L268 CegarLoopResult]: For program point L1049(lines 1049 1064) no Hoare annotation was computed. [2020-07-20 14:12:02,124 INFO L268 CegarLoopResult]: For program point L719(lines 719 721) no Hoare annotation was computed. [2020-07-20 14:12:02,124 INFO L268 CegarLoopResult]: For program point L587(lines 587 598) no Hoare annotation was computed. [2020-07-20 14:12:02,124 INFO L268 CegarLoopResult]: For program point L521(lines 521 536) no Hoare annotation was computed. [2020-07-20 14:12:02,124 INFO L268 CegarLoopResult]: For program point L1183(lines 1183 1194) no Hoare annotation was computed. [2020-07-20 14:12:02,124 INFO L268 CegarLoopResult]: For program point L1117(lines 1117 1132) no Hoare annotation was computed. [2020-07-20 14:12:02,124 INFO L268 CegarLoopResult]: For program point L1051(lines 1051 1062) no Hoare annotation was computed. [2020-07-20 14:12:02,124 INFO L268 CegarLoopResult]: For program point L985(lines 985 1000) no Hoare annotation was computed. [2020-07-20 14:12:02,124 INFO L268 CegarLoopResult]: For program point L655(lines 655 657) no Hoare annotation was computed. [2020-07-20 14:12:02,124 INFO L268 CegarLoopResult]: For program point L523(lines 523 534) no Hoare annotation was computed. [2020-07-20 14:12:02,125 INFO L268 CegarLoopResult]: For program point L457(lines 457 472) no Hoare annotation was computed. [2020-07-20 14:12:02,125 INFO L268 CegarLoopResult]: For program point L1119(lines 1119 1130) no Hoare annotation was computed. [2020-07-20 14:12:02,125 INFO L268 CegarLoopResult]: For program point L987(lines 987 998) no Hoare annotation was computed. [2020-07-20 14:12:02,125 INFO L268 CegarLoopResult]: For program point L921(lines 921 936) no Hoare annotation was computed. [2020-07-20 14:12:02,125 INFO L268 CegarLoopResult]: For program point L591(lines 591 593) no Hoare annotation was computed. [2020-07-20 14:12:02,125 INFO L268 CegarLoopResult]: For program point L459(lines 459 470) no Hoare annotation was computed. [2020-07-20 14:12:02,125 INFO L268 CegarLoopResult]: For program point L393(lines 393 408) no Hoare annotation was computed. [2020-07-20 14:12:02,125 INFO L268 CegarLoopResult]: For program point L261(lines 261 276) no Hoare annotation was computed. [2020-07-20 14:12:02,126 INFO L268 CegarLoopResult]: For program point L129(lines 129 144) no Hoare annotation was computed. [2020-07-20 14:12:02,126 INFO L268 CegarLoopResult]: For program point L328(lines 328 1067) no Hoare annotation was computed. [2020-07-20 14:12:02,126 INFO L268 CegarLoopResult]: For program point L1187(lines 1187 1189) no Hoare annotation was computed. [2020-07-20 14:12:02,126 INFO L268 CegarLoopResult]: For program point L64(lines 64 147) no Hoare annotation was computed. [2020-07-20 14:12:02,126 INFO L268 CegarLoopResult]: For program point L1055(lines 1055 1057) no Hoare annotation was computed. [2020-07-20 14:12:02,126 INFO L268 CegarLoopResult]: For program point L923(lines 923 934) no Hoare annotation was computed. [2020-07-20 14:12:02,126 INFO L268 CegarLoopResult]: For program point L857(lines 857 872) no Hoare annotation was computed. [2020-07-20 14:12:02,126 INFO L268 CegarLoopResult]: For program point L527(lines 527 529) no Hoare annotation was computed. [2020-07-20 14:12:02,127 INFO L268 CegarLoopResult]: For program point L395(lines 395 406) no Hoare annotation was computed. [2020-07-20 14:12:02,127 INFO L268 CegarLoopResult]: For program point L329(lines 329 344) no Hoare annotation was computed. [2020-07-20 14:12:02,127 INFO L268 CegarLoopResult]: For program point L263(lines 263 274) no Hoare annotation was computed. [2020-07-20 14:12:02,127 INFO L268 CegarLoopResult]: For program point L197(lines 197 212) no Hoare annotation was computed. [2020-07-20 14:12:02,127 INFO L268 CegarLoopResult]: For program point L131(lines 131 142) no Hoare annotation was computed. [2020-07-20 14:12:02,127 INFO L268 CegarLoopResult]: For program point L65(lines 65 80) no Hoare annotation was computed. [2020-07-20 14:12:02,127 INFO L268 CegarLoopResult]: For program point L1123(lines 1123 1125) no Hoare annotation was computed. [2020-07-20 14:12:02,127 INFO L268 CegarLoopResult]: For program point L991(lines 991 993) no Hoare annotation was computed. [2020-07-20 14:12:02,128 INFO L268 CegarLoopResult]: For program point L859(lines 859 870) no Hoare annotation was computed. [2020-07-20 14:12:02,128 INFO L268 CegarLoopResult]: For program point L793(lines 793 808) no Hoare annotation was computed. [2020-07-20 14:12:02,128 INFO L268 CegarLoopResult]: For program point L463(lines 463 465) no Hoare annotation was computed. [2020-07-20 14:12:02,128 INFO L268 CegarLoopResult]: For program point L331(lines 331 342) no Hoare annotation was computed. [2020-07-20 14:12:02,128 INFO L268 CegarLoopResult]: For program point L199(lines 199 210) no Hoare annotation was computed. [2020-07-20 14:12:02,128 INFO L268 CegarLoopResult]: For program point L67(lines 67 78) no Hoare annotation was computed. [2020-07-20 14:12:02,128 INFO L268 CegarLoopResult]: For program point L927(lines 927 929) no Hoare annotation was computed. [2020-07-20 14:12:02,128 INFO L268 CegarLoopResult]: For program point L795(lines 795 806) no Hoare annotation was computed. [2020-07-20 14:12:02,129 INFO L268 CegarLoopResult]: For program point L729(lines 729 744) no Hoare annotation was computed. [2020-07-20 14:12:02,129 INFO L268 CegarLoopResult]: For program point L399(lines 399 401) no Hoare annotation was computed. [2020-07-20 14:12:02,129 INFO L268 CegarLoopResult]: For program point L267(lines 267 269) no Hoare annotation was computed. [2020-07-20 14:12:02,129 INFO L268 CegarLoopResult]: For program point L135(lines 135 137) no Hoare annotation was computed. [2020-07-20 14:12:02,129 INFO L268 CegarLoopResult]: For program point L863(lines 863 865) no Hoare annotation was computed. [2020-07-20 14:12:02,129 INFO L268 CegarLoopResult]: For program point L731(lines 731 742) no Hoare annotation was computed. [2020-07-20 14:12:02,129 INFO L268 CegarLoopResult]: For program point L665(lines 665 680) no Hoare annotation was computed. [2020-07-20 14:12:02,129 INFO L268 CegarLoopResult]: For program point L335(lines 335 337) no Hoare annotation was computed. [2020-07-20 14:12:02,130 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 16 1255) no Hoare annotation was computed. [2020-07-20 14:12:02,130 INFO L268 CegarLoopResult]: For program point L203(lines 203 205) no Hoare annotation was computed. [2020-07-20 14:12:02,130 INFO L268 CegarLoopResult]: For program point L71(lines 71 73) no Hoare annotation was computed. [2020-07-20 14:12:02,130 INFO L268 CegarLoopResult]: For program point L799(lines 799 801) no Hoare annotation was computed. [2020-07-20 14:12:02,130 INFO L268 CegarLoopResult]: For program point L667(lines 667 678) no Hoare annotation was computed. [2020-07-20 14:12:02,130 INFO L268 CegarLoopResult]: For program point L601(lines 601 616) no Hoare annotation was computed. [2020-07-20 14:12:02,130 INFO L268 CegarLoopResult]: For program point L1197(lines 1197 1212) no Hoare annotation was computed. [2020-07-20 14:12:02,130 INFO L268 CegarLoopResult]: For program point L735(lines 735 737) no Hoare annotation was computed. [2020-07-20 14:12:02,131 INFO L268 CegarLoopResult]: For program point L603(lines 603 614) no Hoare annotation was computed. [2020-07-20 14:12:02,131 INFO L268 CegarLoopResult]: For program point L537(lines 537 552) no Hoare annotation was computed. [2020-07-20 14:12:02,131 INFO L268 CegarLoopResult]: For program point L1199(lines 1199 1210) no Hoare annotation was computed. [2020-07-20 14:12:02,131 INFO L268 CegarLoopResult]: For program point L1133(lines 1133 1148) no Hoare annotation was computed. [2020-07-20 14:12:02,131 INFO L268 CegarLoopResult]: For program point L1001(lines 1001 1016) no Hoare annotation was computed. [2020-07-20 14:12:02,131 INFO L268 CegarLoopResult]: For program point L671(lines 671 673) no Hoare annotation was computed. [2020-07-20 14:12:02,131 INFO L268 CegarLoopResult]: For program point L539(lines 539 550) no Hoare annotation was computed. [2020-07-20 14:12:02,131 INFO L268 CegarLoopResult]: For program point L473(lines 473 488) no Hoare annotation was computed. [2020-07-20 14:12:02,132 INFO L268 CegarLoopResult]: For program point L1068(lines 1068 1247) no Hoare annotation was computed. [2020-07-20 14:12:02,132 INFO L268 CegarLoopResult]: For program point L1135(lines 1135 1146) no Hoare annotation was computed. [2020-07-20 14:12:02,132 INFO L268 CegarLoopResult]: For program point L1069(lines 1069 1084) no Hoare annotation was computed. [2020-07-20 14:12:02,132 INFO L268 CegarLoopResult]: For program point L1003(lines 1003 1014) no Hoare annotation was computed. [2020-07-20 14:12:02,132 INFO L268 CegarLoopResult]: For program point L937(lines 937 952) no Hoare annotation was computed. [2020-07-20 14:12:02,132 INFO L268 CegarLoopResult]: For program point L607(lines 607 609) no Hoare annotation was computed. [2020-07-20 14:12:02,132 INFO L268 CegarLoopResult]: For program point L475(lines 475 486) no Hoare annotation was computed. [2020-07-20 14:12:02,132 INFO L268 CegarLoopResult]: For program point L409(lines 409 424) no Hoare annotation was computed. [2020-07-20 14:12:02,133 INFO L268 CegarLoopResult]: For program point L277(lines 277 292) no Hoare annotation was computed. [2020-07-20 14:12:02,133 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 1254) no Hoare annotation was computed. [2020-07-20 14:12:02,133 INFO L268 CegarLoopResult]: For program point L1203(lines 1203 1205) no Hoare annotation was computed. [2020-07-20 14:12:02,133 INFO L268 CegarLoopResult]: For program point L1071(lines 1071 1082) no Hoare annotation was computed. [2020-07-20 14:12:02,133 INFO L268 CegarLoopResult]: For program point L939(lines 939 950) no Hoare annotation was computed. [2020-07-20 14:12:02,133 INFO L268 CegarLoopResult]: For program point L873(lines 873 888) no Hoare annotation was computed. [2020-07-20 14:12:02,133 INFO L268 CegarLoopResult]: For program point L543(lines 543 545) no Hoare annotation was computed. [2020-07-20 14:12:02,134 INFO L268 CegarLoopResult]: For program point L411(lines 411 422) no Hoare annotation was computed. [2020-07-20 14:12:02,134 INFO L268 CegarLoopResult]: For program point L345(lines 345 360) no Hoare annotation was computed. [2020-07-20 14:12:02,134 INFO L268 CegarLoopResult]: For program point L279(lines 279 290) no Hoare annotation was computed. [2020-07-20 14:12:02,134 INFO L268 CegarLoopResult]: For program point L213(lines 213 228) no Hoare annotation was computed. [2020-07-20 14:12:02,134 INFO L268 CegarLoopResult]: For program point L81(lines 81 96) no Hoare annotation was computed. [2020-07-20 14:12:02,134 INFO L268 CegarLoopResult]: For program point L148(lines 148 327) no Hoare annotation was computed. [2020-07-20 14:12:02,134 INFO L268 CegarLoopResult]: For program point L1139(lines 1139 1141) no Hoare annotation was computed. [2020-07-20 14:12:02,134 INFO L268 CegarLoopResult]: For program point L1007(lines 1007 1009) no Hoare annotation was computed. [2020-07-20 14:12:02,135 INFO L268 CegarLoopResult]: For program point L875(lines 875 886) no Hoare annotation was computed. [2020-07-20 14:12:02,135 INFO L268 CegarLoopResult]: For program point L809(lines 809 824) no Hoare annotation was computed. [2020-07-20 14:12:02,135 INFO L268 CegarLoopResult]: For program point L479(lines 479 481) no Hoare annotation was computed. [2020-07-20 14:12:02,135 INFO L268 CegarLoopResult]: For program point L347(lines 347 358) no Hoare annotation was computed. [2020-07-20 14:12:02,135 INFO L268 CegarLoopResult]: For program point L215(lines 215 226) no Hoare annotation was computed. [2020-07-20 14:12:02,135 INFO L268 CegarLoopResult]: For program point L149(lines 149 164) no Hoare annotation was computed. [2020-07-20 14:12:02,135 INFO L268 CegarLoopResult]: For program point L83(lines 83 94) no Hoare annotation was computed. [2020-07-20 14:12:02,135 INFO L268 CegarLoopResult]: For program point L1075(lines 1075 1077) no Hoare annotation was computed. [2020-07-20 14:12:02,136 INFO L268 CegarLoopResult]: For program point L943(lines 943 945) no Hoare annotation was computed. [2020-07-20 14:12:02,136 INFO L268 CegarLoopResult]: For program point L811(lines 811 822) no Hoare annotation was computed. [2020-07-20 14:12:02,136 INFO L268 CegarLoopResult]: For program point L745(lines 745 760) no Hoare annotation was computed. [2020-07-20 14:12:02,136 INFO L268 CegarLoopResult]: For program point L415(lines 415 417) no Hoare annotation was computed. [2020-07-20 14:12:02,136 INFO L268 CegarLoopResult]: For program point L283(lines 283 285) no Hoare annotation was computed. [2020-07-20 14:12:02,136 INFO L268 CegarLoopResult]: For program point L151(lines 151 162) no Hoare annotation was computed. [2020-07-20 14:12:02,136 INFO L268 CegarLoopResult]: For program point L879(lines 879 881) no Hoare annotation was computed. [2020-07-20 14:12:02,136 INFO L268 CegarLoopResult]: For program point L747(lines 747 758) no Hoare annotation was computed. [2020-07-20 14:12:02,137 INFO L268 CegarLoopResult]: For program point L681(lines 681 696) no Hoare annotation was computed. [2020-07-20 14:12:02,137 INFO L268 CegarLoopResult]: For program point L351(lines 351 353) no Hoare annotation was computed. [2020-07-20 14:12:02,137 INFO L268 CegarLoopResult]: For program point L219(lines 219 221) no Hoare annotation was computed. [2020-07-20 14:12:02,137 INFO L268 CegarLoopResult]: For program point L87(lines 87 89) no Hoare annotation was computed. [2020-07-20 14:12:02,137 INFO L268 CegarLoopResult]: For program point L815(lines 815 817) no Hoare annotation was computed. [2020-07-20 14:12:02,137 INFO L268 CegarLoopResult]: For program point L683(lines 683 694) no Hoare annotation was computed. [2020-07-20 14:12:02,137 INFO L268 CegarLoopResult]: For program point L617(lines 617 632) no Hoare annotation was computed. [2020-07-20 14:12:02,137 INFO L268 CegarLoopResult]: For program point L155(lines 155 157) no Hoare annotation was computed. [2020-07-20 14:12:02,137 INFO L268 CegarLoopResult]: For program point L1213(lines 1213 1228) no Hoare annotation was computed. [2020-07-20 14:12:02,138 INFO L268 CegarLoopResult]: For program point L751(lines 751 753) no Hoare annotation was computed. [2020-07-20 14:12:02,138 INFO L268 CegarLoopResult]: For program point L619(lines 619 630) no Hoare annotation was computed. [2020-07-20 14:12:02,138 INFO L268 CegarLoopResult]: For program point L553(lines 553 568) no Hoare annotation was computed. [2020-07-20 14:12:02,138 INFO L268 CegarLoopResult]: For program point L1215(lines 1215 1226) no Hoare annotation was computed. [2020-07-20 14:12:02,138 INFO L268 CegarLoopResult]: For program point L1149(lines 1149 1164) no Hoare annotation was computed. [2020-07-20 14:12:02,138 INFO L268 CegarLoopResult]: For program point L1017(lines 1017 1032) no Hoare annotation was computed. [2020-07-20 14:12:02,138 INFO L268 CegarLoopResult]: For program point L687(lines 687 689) no Hoare annotation was computed. [2020-07-20 14:12:02,138 INFO L268 CegarLoopResult]: For program point L555(lines 555 566) no Hoare annotation was computed. [2020-07-20 14:12:02,138 INFO L268 CegarLoopResult]: For program point L489(lines 489 504) no Hoare annotation was computed. [2020-07-20 14:12:02,139 INFO L268 CegarLoopResult]: For program point L1151(lines 1151 1162) no Hoare annotation was computed. [2020-07-20 14:12:02,139 INFO L268 CegarLoopResult]: For program point L1085(lines 1085 1100) no Hoare annotation was computed. [2020-07-20 14:12:02,139 INFO L268 CegarLoopResult]: For program point L1019(lines 1019 1030) no Hoare annotation was computed. [2020-07-20 14:12:02,139 INFO L268 CegarLoopResult]: For program point L953(lines 953 968) no Hoare annotation was computed. [2020-07-20 14:12:02,139 INFO L268 CegarLoopResult]: For program point L623(lines 623 625) no Hoare annotation was computed. [2020-07-20 14:12:02,139 INFO L268 CegarLoopResult]: For program point L491(lines 491 502) no Hoare annotation was computed. [2020-07-20 14:12:02,139 INFO L268 CegarLoopResult]: For program point L425(lines 425 440) no Hoare annotation was computed. [2020-07-20 14:12:02,139 INFO L268 CegarLoopResult]: For program point L293(lines 293 308) no Hoare annotation was computed. [2020-07-20 14:12:02,140 INFO L268 CegarLoopResult]: For program point L1219(lines 1219 1221) no Hoare annotation was computed. [2020-07-20 14:12:02,140 INFO L268 CegarLoopResult]: For program point L1087(lines 1087 1098) no Hoare annotation was computed. [2020-07-20 14:12:02,140 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 16 1255) the Hoare annotation is: true [2020-07-20 14:12:02,140 INFO L268 CegarLoopResult]: For program point L955(lines 955 966) no Hoare annotation was computed. [2020-07-20 14:12:02,140 INFO L268 CegarLoopResult]: For program point L889(lines 889 904) no Hoare annotation was computed. [2020-07-20 14:12:02,140 INFO L268 CegarLoopResult]: For program point L559(lines 559 561) no Hoare annotation was computed. [2020-07-20 14:12:02,140 INFO L268 CegarLoopResult]: For program point L427(lines 427 438) no Hoare annotation was computed. [2020-07-20 14:12:02,140 INFO L268 CegarLoopResult]: For program point L361(lines 361 376) no Hoare annotation was computed. [2020-07-20 14:12:02,141 INFO L268 CegarLoopResult]: For program point L295(lines 295 306) no Hoare annotation was computed. [2020-07-20 14:12:02,141 INFO L268 CegarLoopResult]: For program point L229(lines 229 244) no Hoare annotation was computed. [2020-07-20 14:12:02,141 INFO L268 CegarLoopResult]: For program point L97(lines 97 112) no Hoare annotation was computed. [2020-07-20 14:12:02,141 INFO L268 CegarLoopResult]: For program point L1155(lines 1155 1157) no Hoare annotation was computed. [2020-07-20 14:12:02,141 INFO L268 CegarLoopResult]: For program point L1023(lines 1023 1025) no Hoare annotation was computed. [2020-07-20 14:12:02,141 INFO L264 CegarLoopResult]: At program point L32-2(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 (<= main_~q~0 0)) (and .cse3 (<= main_~q~0 2) (<= 2 main_~q~0) .cse0 .cse2) (and (<= 3 main_~q~0) (<= 1 main_~this_m_conn_data_listener~0) .cse1 .cse2 (<= main_~q~0 3)))) [2020-07-20 14:12:02,141 INFO L268 CegarLoopResult]: For program point L32-3(lines 32 1250) no Hoare annotation was computed. [2020-07-20 14:12:02,142 INFO L268 CegarLoopResult]: For program point L891(lines 891 902) no Hoare annotation was computed. [2020-07-20 14:12:02,142 INFO L268 CegarLoopResult]: For program point L825(lines 825 840) no Hoare annotation was computed. [2020-07-20 14:12:02,142 INFO L268 CegarLoopResult]: For program point L495(lines 495 497) no Hoare annotation was computed. [2020-07-20 14:12:02,142 INFO L268 CegarLoopResult]: For program point L363(lines 363 374) no Hoare annotation was computed. [2020-07-20 14:12:02,142 INFO L268 CegarLoopResult]: For program point L231(lines 231 242) no Hoare annotation was computed. [2020-07-20 14:12:02,142 INFO L268 CegarLoopResult]: For program point L165(lines 165 180) no Hoare annotation was computed. [2020-07-20 14:12:02,142 INFO L268 CegarLoopResult]: For program point L99(lines 99 110) no Hoare annotation was computed. [2020-07-20 14:12:02,142 INFO L268 CegarLoopResult]: For program point L1091(lines 1091 1093) no Hoare annotation was computed. [2020-07-20 14:12:02,142 INFO L268 CegarLoopResult]: For program point L959(lines 959 961) no Hoare annotation was computed. [2020-07-20 14:12:02,143 INFO L268 CegarLoopResult]: For program point L827(lines 827 838) no Hoare annotation was computed. [2020-07-20 14:12:02,143 INFO L268 CegarLoopResult]: For program point L761(lines 761 776) no Hoare annotation was computed. [2020-07-20 14:12:02,143 INFO L268 CegarLoopResult]: For program point L431(lines 431 433) no Hoare annotation was computed. [2020-07-20 14:12:02,143 INFO L268 CegarLoopResult]: For program point L299(lines 299 301) no Hoare annotation was computed. [2020-07-20 14:12:02,143 INFO L268 CegarLoopResult]: For program point L167(lines 167 178) no Hoare annotation was computed. [2020-07-20 14:12:02,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 02:12:02 BoogieIcfgContainer [2020-07-20 14:12:02,166 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 14:12:02,168 INFO L168 Benchmark]: Toolchain (without parser) took 10770.80 ms. Allocated memory was 137.4 MB in the beginning and 371.7 MB in the end (delta: 234.4 MB). Free memory was 93.2 MB in the beginning and 207.7 MB in the end (delta: -114.5 MB). Peak memory consumption was 119.9 MB. Max. memory is 7.1 GB. [2020-07-20 14:12:02,169 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 137.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-20 14:12:02,170 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1468.96 ms. Allocated memory was 137.4 MB in the beginning and 231.7 MB in the end (delta: 94.4 MB). Free memory was 92.8 MB in the beginning and 122.8 MB in the end (delta: -30.1 MB). Peak memory consumption was 71.1 MB. Max. memory is 7.1 GB. [2020-07-20 14:12:02,171 INFO L168 Benchmark]: Boogie Preprocessor took 222.63 ms. Allocated memory is still 231.7 MB. Free memory was 122.8 MB in the beginning and 109.2 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2020-07-20 14:12:02,172 INFO L168 Benchmark]: RCFGBuilder took 1933.66 ms. Allocated memory was 231.7 MB in the beginning and 262.7 MB in the end (delta: 30.9 MB). Free memory was 109.2 MB in the beginning and 174.1 MB in the end (delta: -64.9 MB). Peak memory consumption was 60.0 MB. Max. memory is 7.1 GB. [2020-07-20 14:12:02,173 INFO L168 Benchmark]: TraceAbstraction took 7136.49 ms. Allocated memory was 262.7 MB in the beginning and 371.7 MB in the end (delta: 109.1 MB). Free memory was 174.1 MB in the beginning and 207.7 MB in the end (delta: -33.6 MB). Peak memory consumption was 75.5 MB. Max. memory is 7.1 GB. [2020-07-20 14:12:02,177 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 137.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1468.96 ms. Allocated memory was 137.4 MB in the beginning and 231.7 MB in the end (delta: 94.4 MB). Free memory was 92.8 MB in the beginning and 122.8 MB in the end (delta: -30.1 MB). Peak memory consumption was 71.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 222.63 ms. Allocated memory is still 231.7 MB. Free memory was 122.8 MB in the beginning and 109.2 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1933.66 ms. Allocated memory was 231.7 MB in the beginning and 262.7 MB in the end (delta: 30.9 MB). Free memory was 109.2 MB in the beginning and 174.1 MB in the end (delta: -64.9 MB). Peak memory consumption was 60.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7136.49 ms. Allocated memory was 262.7 MB in the beginning and 371.7 MB in the end (delta: 109.1 MB). Free memory was 174.1 MB in the beginning and 207.7 MB in the end (delta: -33.6 MB). Peak memory consumption was 75.5 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) && q <= 0)) || ((((0 == this_m_conn && q <= 2) && 2 <= q) && 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 == this_m_conn && 0 == this_m_conn_data_listener) && 1 <= this_m_delta) && q <= 0)) || ((((0 == this_m_conn && q <= 2) && 2 <= q) && 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: 6.6s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4078 SDtfs, 2157 SDslu, 1591 SDs, 0 SdLazy, 700 SolverSat, 410 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s 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=415occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 27 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 15 NumberOfFragments, 123 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 36 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 339 NumberOfCodeBlocks, 226 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 327 ConstructedInterpolants, 0 QuantifiedInterpolants, 15169 SizeOfPredicates, 12 NumberOfNonLiveVariables, 2010 ConjunctsInSsa, 25 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...