/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_i25_o25-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 05:44:15,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 05:44:15,199 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 05:44:15,211 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 05:44:15,212 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 05:44:15,213 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 05:44:15,214 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 05:44:15,216 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 05:44:15,218 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 05:44:15,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 05:44:15,220 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 05:44:15,221 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 05:44:15,221 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 05:44:15,223 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 05:44:15,224 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 05:44:15,225 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 05:44:15,226 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 05:44:15,227 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 05:44:15,229 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 05:44:15,231 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 05:44:15,233 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 05:44:15,235 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 05:44:15,236 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 05:44:15,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 05:44:15,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 05:44:15,248 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 05:44:15,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 05:44:15,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 05:44:15,251 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 05:44:15,266 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 05:44:15,267 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 05:44:15,268 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 05:44:15,268 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 05:44:15,268 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 05:44:15,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 05:44:15,269 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 05:44:15,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 05:44:15,269 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 05:44:15,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 05:44:15,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 05:44:15,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 05:44:15,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 05:44:15,270 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 05:44:15,270 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 05:44:15,270 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 05:44:15,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 05:44:15,271 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 05:44:15,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 05:44:15,272 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 05:44:15,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 05:44:15,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 05:44:15,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 05:44:15,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 05:44:15,273 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 05:44:15,273 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 05:44:15,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 05:44:15,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 05:44:15,274 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 05:44:15,274 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 05:44:15,553 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 05:44:15,571 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 05:44:15,576 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 05:44:15,577 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 05:44:15,578 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 05:44:15,579 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i25_o25-1.c [2020-07-20 05:44:15,652 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecd21f4fe/4452f535da2f48a9b0ec11bb5ec639a2/FLAGffecb172d [2020-07-20 05:44:16,165 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 05:44:16,167 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_i25_o25-1.c [2020-07-20 05:44:16,173 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecd21f4fe/4452f535da2f48a9b0ec11bb5ec639a2/FLAGffecb172d [2020-07-20 05:44:16,519 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecd21f4fe/4452f535da2f48a9b0ec11bb5ec639a2 [2020-07-20 05:44:16,529 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 05:44:16,533 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 05:44:16,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 05:44:16,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 05:44:16,539 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 05:44:16,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:44:16" (1/1) ... [2020-07-20 05:44:16,544 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56861d06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:44:16, skipping insertion in model container [2020-07-20 05:44:16,544 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:44:16" (1/1) ... [2020-07-20 05:44:16,555 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 05:44:16,577 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 05:44:16,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 05:44:16,826 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 05:44:16,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 05:44:16,856 INFO L208 MainTranslator]: Completed translation [2020-07-20 05:44:16,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:44:16 WrapperNode [2020-07-20 05:44:16,857 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 05:44:16,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 05:44:16,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 05:44:16,858 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 05:44:16,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:44:16" (1/1) ... [2020-07-20 05:44:16,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:44:16" (1/1) ... [2020-07-20 05:44:16,874 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:44:16" (1/1) ... [2020-07-20 05:44:16,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:44:16" (1/1) ... [2020-07-20 05:44:16,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:44:16" (1/1) ... [2020-07-20 05:44:16,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:44:16" (1/1) ... [2020-07-20 05:44:16,879 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:44:16" (1/1) ... [2020-07-20 05:44:16,880 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 05:44:16,881 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 05:44:16,881 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 05:44:16,881 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 05:44:16,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:44:16" (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 05:44:17,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 05:44:17,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 05:44:17,033 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-07-20 05:44:17,033 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 05:44:17,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 05:44:17,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 05:44:17,034 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-07-20 05:44:17,034 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 05:44:17,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 05:44:17,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 05:44:17,211 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 05:44:17,212 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 05:44:17,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:44:17 BoogieIcfgContainer [2020-07-20 05:44:17,216 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 05:44:17,217 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 05:44:17,218 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 05:44:17,221 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 05:44:17,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 05:44:16" (1/3) ... [2020-07-20 05:44:17,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@97e734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:44:17, skipping insertion in model container [2020-07-20 05:44:17,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:44:16" (2/3) ... [2020-07-20 05:44:17,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@97e734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:44:17, skipping insertion in model container [2020-07-20 05:44:17,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:44:17" (3/3) ... [2020-07-20 05:44:17,225 INFO L109 eAbstractionObserver]: Analyzing ICFG id_i25_o25-1.c [2020-07-20 05:44:17,236 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 05:44:17,244 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 05:44:17,258 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 05:44:17,281 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 05:44:17,282 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 05:44:17,282 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 05:44:17,282 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 05:44:17,282 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 05:44:17,282 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 05:44:17,283 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 05:44:17,283 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 05:44:17,298 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-07-20 05:44:17,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-20 05:44:17,306 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:44:17,307 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:44:17,308 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:44:17,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:44:17,313 INFO L82 PathProgramCache]: Analyzing trace with hash -872342019, now seen corresponding path program 1 times [2020-07-20 05:44:17,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:44:17,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339568425] [2020-07-20 05:44:17,322 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@746afafd [2020-07-20 05:44:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:17,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:17,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:17,603 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 05:44:17,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339568425] [2020-07-20 05:44:17,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:44:17,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 05:44:17,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062682307] [2020-07-20 05:44:17,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 05:44:17,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:44:17,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 05:44:17,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 05:44:17,648 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2020-07-20 05:44:17,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:44:17,733 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-07-20 05:44:17,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 05:44:17,736 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-07-20 05:44:17,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:44:17,747 INFO L225 Difference]: With dead ends: 30 [2020-07-20 05:44:17,747 INFO L226 Difference]: Without dead ends: 18 [2020-07-20 05:44:17,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 05:44:17,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-20 05:44:17,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-07-20 05:44:17,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-20 05:44:17,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-07-20 05:44:17,799 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2020-07-20 05:44:17,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:44:17,800 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-07-20 05:44:17,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 05:44:17,800 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-07-20 05:44:17,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-20 05:44:17,803 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:44:17,803 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:44:17,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 05:44:17,804 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:44:17,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:44:17,804 INFO L82 PathProgramCache]: Analyzing trace with hash -953570577, now seen corresponding path program 1 times [2020-07-20 05:44:17,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:44:17,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278126625] [2020-07-20 05:44:17,805 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@746afafd [2020-07-20 05:44:17,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:17,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:17,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:17,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:17,952 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 05:44:17,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278126625] [2020-07-20 05:44:17,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419271571] [2020-07-20 05:44:17,953 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@66e69941 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:44:18,017 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@66e69941 issued 3 check-sat command(s) [2020-07-20 05:44:18,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:44:18,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 05:44:18,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:44:18,096 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 05:44:18,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:44:18,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-07-20 05:44:18,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135790487] [2020-07-20 05:44:18,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 05:44:18,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:44:18,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 05:44:18,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-20 05:44:18,100 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 8 states. [2020-07-20 05:44:18,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:44:18,189 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-07-20 05:44:18,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 05:44:18,191 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-07-20 05:44:18,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:44:18,192 INFO L225 Difference]: With dead ends: 25 [2020-07-20 05:44:18,193 INFO L226 Difference]: Without dead ends: 21 [2020-07-20 05:44:18,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-07-20 05:44:18,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-20 05:44:18,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-07-20 05:44:18,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-20 05:44:18,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-07-20 05:44:18,207 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 19 [2020-07-20 05:44:18,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:44:18,210 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-07-20 05:44:18,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 05:44:18,211 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-07-20 05:44:18,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-20 05:44:18,213 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:44:18,214 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:44:18,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-20 05:44:18,430 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:44:18,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:44:18,431 INFO L82 PathProgramCache]: Analyzing trace with hash 397359997, now seen corresponding path program 2 times [2020-07-20 05:44:18,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:44:18,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885573315] [2020-07-20 05:44:18,432 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@746afafd [2020-07-20 05:44:18,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:18,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:18,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:18,570 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-07-20 05:44:18,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885573315] [2020-07-20 05:44:18,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269431574] [2020-07-20 05:44:18,572 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@655c7ac2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:44:18,613 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@655c7ac2 issued 3 check-sat command(s) [2020-07-20 05:44:18,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:44:18,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 05:44:18,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:44:18,660 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-07-20 05:44:18,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:44:18,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-07-20 05:44:18,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975663218] [2020-07-20 05:44:18,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 05:44:18,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:44:18,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 05:44:18,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-07-20 05:44:18,663 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 9 states. [2020-07-20 05:44:18,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:44:18,738 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-07-20 05:44:18,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 05:44:18,739 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-07-20 05:44:18,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:44:18,740 INFO L225 Difference]: With dead ends: 28 [2020-07-20 05:44:18,741 INFO L226 Difference]: Without dead ends: 24 [2020-07-20 05:44:18,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-07-20 05:44:18,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-20 05:44:18,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-07-20 05:44:18,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-20 05:44:18,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-07-20 05:44:18,749 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 25 [2020-07-20 05:44:18,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:44:18,749 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-07-20 05:44:18,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 05:44:18,750 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-07-20 05:44:18,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-20 05:44:18,751 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:44:18,751 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:44:18,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:44:18,965 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:44:18,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:44:18,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1198310127, now seen corresponding path program 3 times [2020-07-20 05:44:18,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:44:18,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267948995] [2020-07-20 05:44:18,967 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@746afafd [2020-07-20 05:44:18,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:19,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:19,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:19,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:19,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:19,212 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-07-20 05:44:19,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267948995] [2020-07-20 05:44:19,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557243705] [2020-07-20 05:44:19,213 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1773495d No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:44:19,246 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1773495d issued 3 check-sat command(s) [2020-07-20 05:44:19,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:44:19,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 05:44:19,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:44:19,296 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-07-20 05:44:19,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:44:19,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2020-07-20 05:44:19,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016406347] [2020-07-20 05:44:19,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 05:44:19,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:44:19,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 05:44:19,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-07-20 05:44:19,299 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 10 states. [2020-07-20 05:44:19,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:44:19,380 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-07-20 05:44:19,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 05:44:19,381 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-07-20 05:44:19,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:44:19,382 INFO L225 Difference]: With dead ends: 31 [2020-07-20 05:44:19,382 INFO L226 Difference]: Without dead ends: 27 [2020-07-20 05:44:19,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-07-20 05:44:19,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-07-20 05:44:19,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-07-20 05:44:19,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-20 05:44:19,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-07-20 05:44:19,390 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 31 [2020-07-20 05:44:19,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:44:19,390 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-07-20 05:44:19,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 05:44:19,391 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-07-20 05:44:19,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-20 05:44:19,392 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:44:19,392 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:44:19,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:44:19,596 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:44:19,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:44:19,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1080764669, now seen corresponding path program 4 times [2020-07-20 05:44:19,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:44:19,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193442824] [2020-07-20 05:44:19,599 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@746afafd [2020-07-20 05:44:19,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:19,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:19,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:19,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:19,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:19,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:19,772 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-07-20 05:44:19,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193442824] [2020-07-20 05:44:19,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061831152] [2020-07-20 05:44:19,774 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5cbd72b No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:44:19,811 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5cbd72b issued 3 check-sat command(s) [2020-07-20 05:44:19,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:44:19,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-20 05:44:19,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:44:19,857 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-07-20 05:44:19,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:44:19,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-07-20 05:44:19,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587784004] [2020-07-20 05:44:19,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-20 05:44:19,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:44:19,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-20 05:44:19,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-07-20 05:44:19,861 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 11 states. [2020-07-20 05:44:19,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:44:19,948 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-07-20 05:44:19,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 05:44:19,949 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-07-20 05:44:19,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:44:19,951 INFO L225 Difference]: With dead ends: 34 [2020-07-20 05:44:19,951 INFO L226 Difference]: Without dead ends: 30 [2020-07-20 05:44:19,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-07-20 05:44:19,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-20 05:44:19,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-07-20 05:44:19,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-20 05:44:19,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-07-20 05:44:19,959 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 37 [2020-07-20 05:44:19,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:44:19,959 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-07-20 05:44:19,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-20 05:44:19,960 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-07-20 05:44:19,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-07-20 05:44:19,961 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:44:19,961 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:44:20,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:44:20,177 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:44:20,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:44:20,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1752970513, now seen corresponding path program 5 times [2020-07-20 05:44:20,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:44:20,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820010216] [2020-07-20 05:44:20,179 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@746afafd [2020-07-20 05:44:20,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:20,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:20,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:20,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:20,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:20,442 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-07-20 05:44:20,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820010216] [2020-07-20 05:44:20,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060025321] [2020-07-20 05:44:20,444 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5b57eab0 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:44:20,493 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5b57eab0 issued 3 check-sat command(s) [2020-07-20 05:44:20,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:44:20,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-20 05:44:20,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:44:20,579 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-07-20 05:44:20,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:44:20,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2020-07-20 05:44:20,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239905155] [2020-07-20 05:44:20,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-20 05:44:20,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:44:20,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-20 05:44:20,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-07-20 05:44:20,586 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 12 states. [2020-07-20 05:44:20,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:44:20,727 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2020-07-20 05:44:20,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 05:44:20,727 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 43 [2020-07-20 05:44:20,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:44:20,729 INFO L225 Difference]: With dead ends: 37 [2020-07-20 05:44:20,729 INFO L226 Difference]: Without dead ends: 33 [2020-07-20 05:44:20,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=202, Unknown=0, NotChecked=0, Total=306 [2020-07-20 05:44:20,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-07-20 05:44:20,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-07-20 05:44:20,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-07-20 05:44:20,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-07-20 05:44:20,738 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 43 [2020-07-20 05:44:20,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:44:20,738 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-07-20 05:44:20,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-20 05:44:20,739 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-07-20 05:44:20,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-07-20 05:44:20,740 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:44:20,741 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:44:20,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-07-20 05:44:20,956 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:44:20,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:44:20,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1590630787, now seen corresponding path program 6 times [2020-07-20 05:44:20,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:44:20,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619991647] [2020-07-20 05:44:20,957 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@746afafd [2020-07-20 05:44:20,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:20,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:20,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:21,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:21,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:21,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:21,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:21,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:21,137 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-07-20 05:44:21,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619991647] [2020-07-20 05:44:21,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552381549] [2020-07-20 05:44:21,138 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2ea4fade No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:44:21,179 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2ea4fade issued 3 check-sat command(s) [2020-07-20 05:44:21,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:44:21,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-20 05:44:21,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:44:21,228 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-07-20 05:44:21,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:44:21,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2020-07-20 05:44:21,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742560478] [2020-07-20 05:44:21,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-20 05:44:21,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:44:21,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-20 05:44:21,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-07-20 05:44:21,230 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 13 states. [2020-07-20 05:44:21,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:44:21,346 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2020-07-20 05:44:21,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 05:44:21,347 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 49 [2020-07-20 05:44:21,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:44:21,348 INFO L225 Difference]: With dead ends: 40 [2020-07-20 05:44:21,348 INFO L226 Difference]: Without dead ends: 36 [2020-07-20 05:44:21,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=130, Invalid=250, Unknown=0, NotChecked=0, Total=380 [2020-07-20 05:44:21,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-07-20 05:44:21,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-07-20 05:44:21,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-07-20 05:44:21,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-07-20 05:44:21,356 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 49 [2020-07-20 05:44:21,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:44:21,357 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-07-20 05:44:21,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-20 05:44:21,357 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-07-20 05:44:21,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-20 05:44:21,358 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:44:21,358 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:44:21,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:44:21,572 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:44:21,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:44:21,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1532150511, now seen corresponding path program 7 times [2020-07-20 05:44:21,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:44:21,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144689062] [2020-07-20 05:44:21,574 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@746afafd [2020-07-20 05:44:21,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:21,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:21,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:21,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:21,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:21,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:21,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:21,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:21,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:21,831 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-07-20 05:44:21,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144689062] [2020-07-20 05:44:21,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373316535] [2020-07-20 05:44:21,840 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@b5f1952 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:44:21,922 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@b5f1952 issued 3 check-sat command(s) [2020-07-20 05:44:21,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:44:21,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 18 conjunts are in the unsatisfiable core [2020-07-20 05:44:21,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:44:21,972 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-07-20 05:44:21,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:44:21,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2020-07-20 05:44:21,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824943725] [2020-07-20 05:44:21,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-20 05:44:21,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:44:21,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-20 05:44:21,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-07-20 05:44:21,974 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 14 states. [2020-07-20 05:44:22,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:44:22,092 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-07-20 05:44:22,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-20 05:44:22,093 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 55 [2020-07-20 05:44:22,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:44:22,094 INFO L225 Difference]: With dead ends: 43 [2020-07-20 05:44:22,095 INFO L226 Difference]: Without dead ends: 39 [2020-07-20 05:44:22,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=159, Invalid=303, Unknown=0, NotChecked=0, Total=462 [2020-07-20 05:44:22,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-07-20 05:44:22,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-07-20 05:44:22,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-20 05:44:22,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2020-07-20 05:44:22,102 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 55 [2020-07-20 05:44:22,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:44:22,102 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2020-07-20 05:44:22,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-20 05:44:22,102 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2020-07-20 05:44:22,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-07-20 05:44:22,103 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:44:22,104 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:44:22,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:44:22,319 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:44:22,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:44:22,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1140618237, now seen corresponding path program 8 times [2020-07-20 05:44:22,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:44:22,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656277182] [2020-07-20 05:44:22,321 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@746afafd [2020-07-20 05:44:22,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:22,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:22,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:22,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:22,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:22,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:22,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:22,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:22,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:22,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:22,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:22,548 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-07-20 05:44:22,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656277182] [2020-07-20 05:44:22,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958850600] [2020-07-20 05:44:22,549 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3c3e13fb No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:44:22,593 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3c3e13fb issued 3 check-sat command(s) [2020-07-20 05:44:22,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:44:22,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 20 conjunts are in the unsatisfiable core [2020-07-20 05:44:22,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:44:22,648 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-07-20 05:44:22,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:44:22,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2020-07-20 05:44:22,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067461928] [2020-07-20 05:44:22,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-20 05:44:22,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:44:22,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-20 05:44:22,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-07-20 05:44:22,651 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 15 states. [2020-07-20 05:44:22,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:44:22,805 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-07-20 05:44:22,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-20 05:44:22,807 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 61 [2020-07-20 05:44:22,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:44:22,808 INFO L225 Difference]: With dead ends: 46 [2020-07-20 05:44:22,809 INFO L226 Difference]: Without dead ends: 42 [2020-07-20 05:44:22,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=191, Invalid=361, Unknown=0, NotChecked=0, Total=552 [2020-07-20 05:44:22,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-07-20 05:44:22,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-07-20 05:44:22,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-07-20 05:44:22,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-07-20 05:44:22,827 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 61 [2020-07-20 05:44:22,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:44:22,828 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-07-20 05:44:22,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-20 05:44:22,828 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-07-20 05:44:22,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-07-20 05:44:22,833 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:44:22,834 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:44:23,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-07-20 05:44:23,035 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:44:23,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:44:23,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1749177617, now seen corresponding path program 9 times [2020-07-20 05:44:23,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:44:23,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749642757] [2020-07-20 05:44:23,038 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@746afafd [2020-07-20 05:44:23,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:23,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:23,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:23,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:23,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:23,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:23,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:23,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:23,310 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-07-20 05:44:23,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749642757] [2020-07-20 05:44:23,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315367322] [2020-07-20 05:44:23,311 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@613a12f3 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:44:23,352 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@613a12f3 issued 3 check-sat command(s) [2020-07-20 05:44:23,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:44:23,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 22 conjunts are in the unsatisfiable core [2020-07-20 05:44:23,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:44:23,411 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-07-20 05:44:23,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:44:23,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2020-07-20 05:44:23,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671342299] [2020-07-20 05:44:23,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-20 05:44:23,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:44:23,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-20 05:44:23,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2020-07-20 05:44:23,414 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 16 states. [2020-07-20 05:44:23,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:44:23,565 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-07-20 05:44:23,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-20 05:44:23,566 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 67 [2020-07-20 05:44:23,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:44:23,567 INFO L225 Difference]: With dead ends: 49 [2020-07-20 05:44:23,567 INFO L226 Difference]: Without dead ends: 45 [2020-07-20 05:44:23,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=226, Invalid=424, Unknown=0, NotChecked=0, Total=650 [2020-07-20 05:44:23,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-07-20 05:44:23,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-07-20 05:44:23,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-07-20 05:44:23,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-07-20 05:44:23,575 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 67 [2020-07-20 05:44:23,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:44:23,576 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-07-20 05:44:23,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-20 05:44:23,576 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-07-20 05:44:23,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-07-20 05:44:23,577 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:44:23,578 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:44:23,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:44:23,793 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:44:23,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:44:23,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1580609155, now seen corresponding path program 10 times [2020-07-20 05:44:23,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:44:23,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394631676] [2020-07-20 05:44:23,795 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@746afafd [2020-07-20 05:44:23,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:23,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:23,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:23,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:23,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:23,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:23,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:24,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:24,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:24,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:24,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:24,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:24,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:24,158 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-07-20 05:44:24,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394631676] [2020-07-20 05:44:24,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002321786] [2020-07-20 05:44:24,159 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@64680d1b No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:44:24,198 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@64680d1b issued 3 check-sat command(s) [2020-07-20 05:44:24,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:44:24,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 24 conjunts are in the unsatisfiable core [2020-07-20 05:44:24,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:44:24,294 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-07-20 05:44:24,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:44:24,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2020-07-20 05:44:24,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532872126] [2020-07-20 05:44:24,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-20 05:44:24,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:44:24,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-20 05:44:24,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2020-07-20 05:44:24,297 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 17 states. [2020-07-20 05:44:24,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:44:24,472 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2020-07-20 05:44:24,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-20 05:44:24,473 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 73 [2020-07-20 05:44:24,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:44:24,475 INFO L225 Difference]: With dead ends: 52 [2020-07-20 05:44:24,475 INFO L226 Difference]: Without dead ends: 48 [2020-07-20 05:44:24,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=492, Unknown=0, NotChecked=0, Total=756 [2020-07-20 05:44:24,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-20 05:44:24,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-07-20 05:44:24,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-07-20 05:44:24,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-07-20 05:44:24,483 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 73 [2020-07-20 05:44:24,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:44:24,484 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-07-20 05:44:24,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-20 05:44:24,484 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-07-20 05:44:24,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-20 05:44:24,485 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:44:24,486 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:44:24,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:44:24,700 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:44:24,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:44:24,701 INFO L82 PathProgramCache]: Analyzing trace with hash -223837457, now seen corresponding path program 11 times [2020-07-20 05:44:24,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:44:24,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727076894] [2020-07-20 05:44:24,702 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@746afafd [2020-07-20 05:44:24,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:24,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:24,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:24,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:24,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:24,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:24,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:24,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:24,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:25,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:25,075 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-07-20 05:44:25,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727076894] [2020-07-20 05:44:25,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163354994] [2020-07-20 05:44:25,076 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@489ed62a No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:44:25,136 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@489ed62a issued 3 check-sat command(s) [2020-07-20 05:44:25,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:44:25,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 26 conjunts are in the unsatisfiable core [2020-07-20 05:44:25,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:44:25,231 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-07-20 05:44:25,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:44:25,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2020-07-20 05:44:25,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891901747] [2020-07-20 05:44:25,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-20 05:44:25,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:44:25,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-20 05:44:25,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=194, Unknown=0, NotChecked=0, Total=306 [2020-07-20 05:44:25,234 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 18 states. [2020-07-20 05:44:25,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:44:25,420 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2020-07-20 05:44:25,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-20 05:44:25,421 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 79 [2020-07-20 05:44:25,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:44:25,422 INFO L225 Difference]: With dead ends: 55 [2020-07-20 05:44:25,422 INFO L226 Difference]: Without dead ends: 51 [2020-07-20 05:44:25,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=305, Invalid=565, Unknown=0, NotChecked=0, Total=870 [2020-07-20 05:44:25,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-07-20 05:44:25,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-07-20 05:44:25,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-07-20 05:44:25,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2020-07-20 05:44:25,436 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 79 [2020-07-20 05:44:25,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:44:25,437 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2020-07-20 05:44:25,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-20 05:44:25,437 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2020-07-20 05:44:25,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-07-20 05:44:25,441 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:44:25,442 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:44:25,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-07-20 05:44:25,659 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:44:25,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:44:25,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1653931773, now seen corresponding path program 12 times [2020-07-20 05:44:25,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:44:25,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301163001] [2020-07-20 05:44:25,661 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@746afafd [2020-07-20 05:44:25,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:25,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:25,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:25,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:25,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:25,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:25,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:25,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:25,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:25,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:25,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:25,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:25,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:25,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:26,046 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-07-20 05:44:26,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301163001] [2020-07-20 05:44:26,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704005591] [2020-07-20 05:44:26,047 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@385b3963 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:44:26,089 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@385b3963 issued 3 check-sat command(s) [2020-07-20 05:44:26,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:44:26,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 28 conjunts are in the unsatisfiable core [2020-07-20 05:44:26,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:44:26,151 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-07-20 05:44:26,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:44:26,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-07-20 05:44:26,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857195045] [2020-07-20 05:44:26,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-20 05:44:26,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:44:26,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-20 05:44:26,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=215, Unknown=0, NotChecked=0, Total=342 [2020-07-20 05:44:26,153 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 19 states. [2020-07-20 05:44:26,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:44:26,372 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions. [2020-07-20 05:44:26,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-20 05:44:26,373 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 85 [2020-07-20 05:44:26,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:44:26,374 INFO L225 Difference]: With dead ends: 58 [2020-07-20 05:44:26,374 INFO L226 Difference]: Without dead ends: 54 [2020-07-20 05:44:26,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=349, Invalid=643, Unknown=0, NotChecked=0, Total=992 [2020-07-20 05:44:26,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-07-20 05:44:26,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-07-20 05:44:26,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-07-20 05:44:26,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-07-20 05:44:26,390 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 85 [2020-07-20 05:44:26,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:44:26,391 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-07-20 05:44:26,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-20 05:44:26,391 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-07-20 05:44:26,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-07-20 05:44:26,392 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:44:26,392 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:44:26,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-07-20 05:44:26,607 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:44:26,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:44:26,608 INFO L82 PathProgramCache]: Analyzing trace with hash -218674449, now seen corresponding path program 13 times [2020-07-20 05:44:26,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:44:26,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835389288] [2020-07-20 05:44:26,609 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@746afafd [2020-07-20 05:44:26,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:26,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:26,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:26,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:26,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:26,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:26,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:26,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:26,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:26,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:26,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:26,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:26,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:26,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:27,050 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-07-20 05:44:27,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835389288] [2020-07-20 05:44:27,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494320229] [2020-07-20 05:44:27,051 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2c6a6e05 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:44:27,093 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2c6a6e05 issued 3 check-sat command(s) [2020-07-20 05:44:27,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:44:27,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 30 conjunts are in the unsatisfiable core [2020-07-20 05:44:27,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:44:27,149 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-07-20 05:44:27,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:44:27,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2020-07-20 05:44:27,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752365976] [2020-07-20 05:44:27,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-07-20 05:44:27,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:44:27,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-07-20 05:44:27,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=237, Unknown=0, NotChecked=0, Total=380 [2020-07-20 05:44:27,152 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 20 states. [2020-07-20 05:44:27,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:44:27,370 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2020-07-20 05:44:27,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-20 05:44:27,372 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 91 [2020-07-20 05:44:27,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:44:27,373 INFO L225 Difference]: With dead ends: 61 [2020-07-20 05:44:27,374 INFO L226 Difference]: Without dead ends: 57 [2020-07-20 05:44:27,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=396, Invalid=726, Unknown=0, NotChecked=0, Total=1122 [2020-07-20 05:44:27,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-07-20 05:44:27,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-07-20 05:44:27,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-07-20 05:44:27,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2020-07-20 05:44:27,388 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 91 [2020-07-20 05:44:27,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:44:27,390 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2020-07-20 05:44:27,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-07-20 05:44:27,390 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2020-07-20 05:44:27,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-07-20 05:44:27,393 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:44:27,393 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:44:27,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-07-20 05:44:27,607 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:44:27,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:44:27,607 INFO L82 PathProgramCache]: Analyzing trace with hash 492436605, now seen corresponding path program 14 times [2020-07-20 05:44:27,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:44:27,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805871493] [2020-07-20 05:44:27,608 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@746afafd [2020-07-20 05:44:27,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:27,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:27,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:27,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:27,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:27,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:27,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:27,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:27,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:27,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:27,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:28,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:28,121 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-07-20 05:44:28,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805871493] [2020-07-20 05:44:28,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340512802] [2020-07-20 05:44:28,122 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@68c38255 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:44:28,173 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@68c38255 issued 3 check-sat command(s) [2020-07-20 05:44:28,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:44:28,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 32 conjunts are in the unsatisfiable core [2020-07-20 05:44:28,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:44:28,252 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-07-20 05:44:28,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:44:28,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-07-20 05:44:28,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129383555] [2020-07-20 05:44:28,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-07-20 05:44:28,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:44:28,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-07-20 05:44:28,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=260, Unknown=0, NotChecked=0, Total=420 [2020-07-20 05:44:28,259 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 21 states. [2020-07-20 05:44:28,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:44:28,479 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2020-07-20 05:44:28,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-20 05:44:28,480 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 97 [2020-07-20 05:44:28,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:44:28,481 INFO L225 Difference]: With dead ends: 64 [2020-07-20 05:44:28,481 INFO L226 Difference]: Without dead ends: 60 [2020-07-20 05:44:28,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=446, Invalid=814, Unknown=0, NotChecked=0, Total=1260 [2020-07-20 05:44:28,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-07-20 05:44:28,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-07-20 05:44:28,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-07-20 05:44:28,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2020-07-20 05:44:28,495 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 97 [2020-07-20 05:44:28,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:44:28,496 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2020-07-20 05:44:28,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-07-20 05:44:28,496 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2020-07-20 05:44:28,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-07-20 05:44:28,497 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:44:28,498 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:44:28,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:44:28,712 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:44:28,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:44:28,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1083048687, now seen corresponding path program 15 times [2020-07-20 05:44:28,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:44:28,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525599563] [2020-07-20 05:44:28,713 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@746afafd [2020-07-20 05:44:28,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:28,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:28,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:28,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:28,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:28,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:28,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:28,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:28,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:29,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:29,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:29,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:29,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:29,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:29,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:29,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:29,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:29,256 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2020-07-20 05:44:29,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525599563] [2020-07-20 05:44:29,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747927538] [2020-07-20 05:44:29,257 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6b67109a No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:44:29,322 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6b67109a issued 3 check-sat command(s) [2020-07-20 05:44:29,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:44:29,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 34 conjunts are in the unsatisfiable core [2020-07-20 05:44:29,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:44:29,385 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2020-07-20 05:44:29,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:44:29,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2020-07-20 05:44:29,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267977986] [2020-07-20 05:44:29,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-20 05:44:29,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:44:29,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-20 05:44:29,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=284, Unknown=0, NotChecked=0, Total=462 [2020-07-20 05:44:29,388 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 22 states. [2020-07-20 05:44:29,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:44:29,644 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2020-07-20 05:44:29,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-20 05:44:29,645 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 103 [2020-07-20 05:44:29,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:44:29,646 INFO L225 Difference]: With dead ends: 67 [2020-07-20 05:44:29,646 INFO L226 Difference]: Without dead ends: 63 [2020-07-20 05:44:29,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=499, Invalid=907, Unknown=0, NotChecked=0, Total=1406 [2020-07-20 05:44:29,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-07-20 05:44:29,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-07-20 05:44:29,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-07-20 05:44:29,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2020-07-20 05:44:29,653 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 103 [2020-07-20 05:44:29,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:44:29,654 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2020-07-20 05:44:29,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-07-20 05:44:29,654 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2020-07-20 05:44:29,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-07-20 05:44:29,655 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:44:29,655 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:44:29,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-07-20 05:44:29,871 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:44:29,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:44:29,872 INFO L82 PathProgramCache]: Analyzing trace with hash 404015613, now seen corresponding path program 16 times [2020-07-20 05:44:29,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:44:29,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122788941] [2020-07-20 05:44:29,873 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@746afafd [2020-07-20 05:44:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:29,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:29,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:29,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:30,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:30,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:30,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:30,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:30,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:30,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:30,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:30,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:30,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:30,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:30,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:30,453 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-07-20 05:44:30,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122788941] [2020-07-20 05:44:30,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997704317] [2020-07-20 05:44:30,453 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@513f4109 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:44:30,501 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@513f4109 issued 3 check-sat command(s) [2020-07-20 05:44:30,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:44:30,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 36 conjunts are in the unsatisfiable core [2020-07-20 05:44:30,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:44:30,569 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-07-20 05:44:30,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:44:30,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-07-20 05:44:30,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343386259] [2020-07-20 05:44:30,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-07-20 05:44:30,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:44:30,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-07-20 05:44:30,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=309, Unknown=0, NotChecked=0, Total=506 [2020-07-20 05:44:30,582 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 23 states. [2020-07-20 05:44:30,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:44:30,853 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions. [2020-07-20 05:44:30,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-07-20 05:44:30,853 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 109 [2020-07-20 05:44:30,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:44:30,855 INFO L225 Difference]: With dead ends: 70 [2020-07-20 05:44:30,855 INFO L226 Difference]: Without dead ends: 66 [2020-07-20 05:44:30,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=555, Invalid=1005, Unknown=0, NotChecked=0, Total=1560 [2020-07-20 05:44:30,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-07-20 05:44:30,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-07-20 05:44:30,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-07-20 05:44:30,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2020-07-20 05:44:30,864 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 109 [2020-07-20 05:44:30,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:44:30,866 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2020-07-20 05:44:30,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-07-20 05:44:30,866 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2020-07-20 05:44:30,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-07-20 05:44:30,867 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:44:30,868 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:44:31,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-07-20 05:44:31,080 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:44:31,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:44:31,080 INFO L82 PathProgramCache]: Analyzing trace with hash -464475409, now seen corresponding path program 17 times [2020-07-20 05:44:31,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:44:31,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743291453] [2020-07-20 05:44:31,081 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@746afafd [2020-07-20 05:44:31,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:31,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:31,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:31,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:31,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:31,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:31,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:31,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:31,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:31,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:31,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:31,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:31,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:31,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:31,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:31,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:31,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:31,656 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2020-07-20 05:44:31,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743291453] [2020-07-20 05:44:31,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227914596] [2020-07-20 05:44:31,657 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5e2cedaa No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:44:31,707 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5e2cedaa issued 3 check-sat command(s) [2020-07-20 05:44:31,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:44:31,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 38 conjunts are in the unsatisfiable core [2020-07-20 05:44:31,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:44:31,780 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2020-07-20 05:44:31,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:44:31,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 24 [2020-07-20 05:44:31,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489263373] [2020-07-20 05:44:31,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-07-20 05:44:31,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:44:31,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-07-20 05:44:31,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=335, Unknown=0, NotChecked=0, Total=552 [2020-07-20 05:44:31,782 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 24 states. [2020-07-20 05:44:32,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:44:32,099 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions. [2020-07-20 05:44:32,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-20 05:44:32,099 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 115 [2020-07-20 05:44:32,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:44:32,100 INFO L225 Difference]: With dead ends: 73 [2020-07-20 05:44:32,100 INFO L226 Difference]: Without dead ends: 69 [2020-07-20 05:44:32,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=614, Invalid=1108, Unknown=0, NotChecked=0, Total=1722 [2020-07-20 05:44:32,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-07-20 05:44:32,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-07-20 05:44:32,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-07-20 05:44:32,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2020-07-20 05:44:32,110 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 115 [2020-07-20 05:44:32,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:44:32,111 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2020-07-20 05:44:32,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-07-20 05:44:32,111 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2020-07-20 05:44:32,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-07-20 05:44:32,114 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:44:32,114 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:44:32,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-07-20 05:44:32,326 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:44:32,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:44:32,326 INFO L82 PathProgramCache]: Analyzing trace with hash 130115453, now seen corresponding path program 18 times [2020-07-20 05:44:32,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:44:32,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82121256] [2020-07-20 05:44:32,327 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@746afafd [2020-07-20 05:44:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:32,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:32,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:32,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:32,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:32,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:32,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:32,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:32,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:32,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:32,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:32,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:32,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:32,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:32,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:32,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:32,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:32,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:33,131 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2020-07-20 05:44:33,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82121256] [2020-07-20 05:44:33,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218068235] [2020-07-20 05:44:33,132 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7b030745 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:44:33,187 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7b030745 issued 3 check-sat command(s) [2020-07-20 05:44:33,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:44:33,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 40 conjunts are in the unsatisfiable core [2020-07-20 05:44:33,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:44:33,252 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2020-07-20 05:44:33,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:44:33,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2020-07-20 05:44:33,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99218777] [2020-07-20 05:44:33,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-20 05:44:33,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:44:33,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-20 05:44:33,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=362, Unknown=0, NotChecked=0, Total=600 [2020-07-20 05:44:33,255 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand 25 states. [2020-07-20 05:44:33,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:44:33,522 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2020-07-20 05:44:33,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-20 05:44:33,523 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 121 [2020-07-20 05:44:33,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:44:33,524 INFO L225 Difference]: With dead ends: 76 [2020-07-20 05:44:33,524 INFO L226 Difference]: Without dead ends: 72 [2020-07-20 05:44:33,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=676, Invalid=1216, Unknown=0, NotChecked=0, Total=1892 [2020-07-20 05:44:33,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-07-20 05:44:33,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-07-20 05:44:33,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-07-20 05:44:33,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2020-07-20 05:44:33,530 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 121 [2020-07-20 05:44:33,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:44:33,530 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2020-07-20 05:44:33,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-20 05:44:33,531 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2020-07-20 05:44:33,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-07-20 05:44:33,532 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:44:33,532 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:44:33,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:44:33,748 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:44:33,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:44:33,749 INFO L82 PathProgramCache]: Analyzing trace with hash -2010955025, now seen corresponding path program 19 times [2020-07-20 05:44:33,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:44:33,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102878363] [2020-07-20 05:44:33,749 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@746afafd [2020-07-20 05:44:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:33,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:33,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:33,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:33,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:33,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:34,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:34,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:34,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:34,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:34,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:34,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:34,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:34,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:34,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:34,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:34,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:34,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:34,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2020-07-20 05:44:34,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102878363] [2020-07-20 05:44:34,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696576195] [2020-07-20 05:44:34,594 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@15475d7f No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:44:34,665 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@15475d7f issued 3 check-sat command(s) [2020-07-20 05:44:34,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:44:34,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 42 conjunts are in the unsatisfiable core [2020-07-20 05:44:34,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:44:34,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2020-07-20 05:44:34,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:44:34,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-07-20 05:44:34,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438938166] [2020-07-20 05:44:34,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-07-20 05:44:34,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:44:34,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-07-20 05:44:34,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=390, Unknown=0, NotChecked=0, Total=650 [2020-07-20 05:44:34,778 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand 26 states. [2020-07-20 05:44:35,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:44:35,083 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2020-07-20 05:44:35,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-20 05:44:35,084 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 127 [2020-07-20 05:44:35,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:44:35,085 INFO L225 Difference]: With dead ends: 79 [2020-07-20 05:44:35,085 INFO L226 Difference]: Without dead ends: 75 [2020-07-20 05:44:35,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=741, Invalid=1329, Unknown=0, NotChecked=0, Total=2070 [2020-07-20 05:44:35,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-07-20 05:44:35,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-07-20 05:44:35,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-07-20 05:44:35,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2020-07-20 05:44:35,091 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 127 [2020-07-20 05:44:35,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:44:35,092 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2020-07-20 05:44:35,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-07-20 05:44:35,092 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2020-07-20 05:44:35,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-07-20 05:44:35,093 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:44:35,093 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:44:35,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:44:35,308 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:44:35,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:44:35,309 INFO L82 PathProgramCache]: Analyzing trace with hash -799288067, now seen corresponding path program 20 times [2020-07-20 05:44:35,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:44:35,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73917899] [2020-07-20 05:44:35,310 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@746afafd [2020-07-20 05:44:35,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:35,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:35,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:35,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:35,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:35,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:35,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:35,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:35,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:35,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:35,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:35,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:35,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:35,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:35,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:35,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:36,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:36,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:36,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 610 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2020-07-20 05:44:36,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73917899] [2020-07-20 05:44:36,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568894506] [2020-07-20 05:44:36,288 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5e5d2f44 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:44:36,397 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5e5d2f44 issued 3 check-sat command(s) [2020-07-20 05:44:36,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:44:36,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 44 conjunts are in the unsatisfiable core [2020-07-20 05:44:36,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:44:36,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 610 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2020-07-20 05:44:36,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:44:36,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2020-07-20 05:44:36,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697357555] [2020-07-20 05:44:36,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-07-20 05:44:36,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:44:36,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-07-20 05:44:36,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=419, Unknown=0, NotChecked=0, Total=702 [2020-07-20 05:44:36,523 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 27 states. [2020-07-20 05:44:36,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:44:36,833 INFO L93 Difference]: Finished difference Result 82 states and 83 transitions. [2020-07-20 05:44:36,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-07-20 05:44:36,834 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 133 [2020-07-20 05:44:36,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:44:36,836 INFO L225 Difference]: With dead ends: 82 [2020-07-20 05:44:36,837 INFO L226 Difference]: Without dead ends: 78 [2020-07-20 05:44:36,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=809, Invalid=1447, Unknown=0, NotChecked=0, Total=2256 [2020-07-20 05:44:36,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-07-20 05:44:36,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-07-20 05:44:36,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-07-20 05:44:36,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2020-07-20 05:44:36,843 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 133 [2020-07-20 05:44:36,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:44:36,843 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2020-07-20 05:44:36,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-07-20 05:44:36,843 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2020-07-20 05:44:36,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-07-20 05:44:36,845 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:44:36,845 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:44:37,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-07-20 05:44:37,059 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:44:37,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:44:37,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1226192145, now seen corresponding path program 21 times [2020-07-20 05:44:37,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:44:37,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944993678] [2020-07-20 05:44:37,061 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@746afafd [2020-07-20 05:44:37,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:37,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:37,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:37,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:37,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:37,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:37,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:37,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:37,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:37,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:37,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:37,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:37,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:37,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:37,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:37,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:37,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:37,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:37,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:37,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:37,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:37,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2020-07-20 05:44:37,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944993678] [2020-07-20 05:44:37,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61650025] [2020-07-20 05:44:37,951 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6afa0318 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:44:38,003 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6afa0318 issued 3 check-sat command(s) [2020-07-20 05:44:38,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:44:38,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 46 conjunts are in the unsatisfiable core [2020-07-20 05:44:38,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:44:38,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2020-07-20 05:44:38,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:44:38,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-07-20 05:44:38,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460764169] [2020-07-20 05:44:38,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-07-20 05:44:38,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:44:38,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-07-20 05:44:38,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=449, Unknown=0, NotChecked=0, Total=756 [2020-07-20 05:44:38,120 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand 28 states. [2020-07-20 05:44:38,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:44:38,456 INFO L93 Difference]: Finished difference Result 85 states and 86 transitions. [2020-07-20 05:44:38,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-20 05:44:38,458 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 139 [2020-07-20 05:44:38,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:44:38,460 INFO L225 Difference]: With dead ends: 85 [2020-07-20 05:44:38,461 INFO L226 Difference]: Without dead ends: 81 [2020-07-20 05:44:38,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=880, Invalid=1570, Unknown=0, NotChecked=0, Total=2450 [2020-07-20 05:44:38,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-07-20 05:44:38,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-07-20 05:44:38,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-07-20 05:44:38,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2020-07-20 05:44:38,467 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 139 [2020-07-20 05:44:38,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:44:38,468 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2020-07-20 05:44:38,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-07-20 05:44:38,468 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2020-07-20 05:44:38,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-07-20 05:44:38,469 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:44:38,469 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:44:38,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-07-20 05:44:38,683 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:44:38,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:44:38,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1155535485, now seen corresponding path program 22 times [2020-07-20 05:44:38,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:44:38,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048280772] [2020-07-20 05:44:38,685 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@746afafd [2020-07-20 05:44:38,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:38,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:38,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:38,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:38,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:38,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:39,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:39,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:39,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:39,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:39,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:39,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:39,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:39,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:39,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:39,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:39,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:39,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:39,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:39,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2020-07-20 05:44:39,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048280772] [2020-07-20 05:44:39,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588181145] [2020-07-20 05:44:39,653 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@377e5fc5 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:44:39,706 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@377e5fc5 issued 3 check-sat command(s) [2020-07-20 05:44:39,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:44:39,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 48 conjunts are in the unsatisfiable core [2020-07-20 05:44:39,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:44:39,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2020-07-20 05:44:39,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:44:39,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2020-07-20 05:44:39,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946958067] [2020-07-20 05:44:39,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-07-20 05:44:39,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:44:39,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-07-20 05:44:39,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=480, Unknown=0, NotChecked=0, Total=812 [2020-07-20 05:44:39,802 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 29 states. [2020-07-20 05:44:40,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:44:40,193 INFO L93 Difference]: Finished difference Result 88 states and 89 transitions. [2020-07-20 05:44:40,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-07-20 05:44:40,195 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 145 [2020-07-20 05:44:40,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:44:40,196 INFO L225 Difference]: With dead ends: 88 [2020-07-20 05:44:40,196 INFO L226 Difference]: Without dead ends: 84 [2020-07-20 05:44:40,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=954, Invalid=1698, Unknown=0, NotChecked=0, Total=2652 [2020-07-20 05:44:40,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-07-20 05:44:40,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-07-20 05:44:40,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-07-20 05:44:40,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2020-07-20 05:44:40,202 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 145 [2020-07-20 05:44:40,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:44:40,203 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2020-07-20 05:44:40,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-07-20 05:44:40,203 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2020-07-20 05:44:40,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-07-20 05:44:40,204 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:44:40,204 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:44:40,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:44:40,419 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:44:40,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:44:40,420 INFO L82 PathProgramCache]: Analyzing trace with hash 478692079, now seen corresponding path program 23 times [2020-07-20 05:44:40,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:44:40,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968352110] [2020-07-20 05:44:40,420 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@746afafd [2020-07-20 05:44:40,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:40,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:40,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:40,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:40,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:40,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:40,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:40,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:40,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:40,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:40,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:40,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:40,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:40,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:41,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:41,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:41,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:41,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:41,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:41,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:41,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:41,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:41,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:41,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:41,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2020-07-20 05:44:41,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968352110] [2020-07-20 05:44:41,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487097154] [2020-07-20 05:44:41,543 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@62fab9ff No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:44:41,601 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@62fab9ff issued 3 check-sat command(s) [2020-07-20 05:44:41,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:44:41,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 50 conjunts are in the unsatisfiable core [2020-07-20 05:44:41,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:44:41,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2020-07-20 05:44:41,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:44:41,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2020-07-20 05:44:41,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752959219] [2020-07-20 05:44:41,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-07-20 05:44:41,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:44:41,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-07-20 05:44:41,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=512, Unknown=0, NotChecked=0, Total=870 [2020-07-20 05:44:41,701 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand 30 states. [2020-07-20 05:44:42,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:44:42,104 INFO L93 Difference]: Finished difference Result 91 states and 92 transitions. [2020-07-20 05:44:42,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-20 05:44:42,104 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 151 [2020-07-20 05:44:42,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:44:42,106 INFO L225 Difference]: With dead ends: 91 [2020-07-20 05:44:42,106 INFO L226 Difference]: Without dead ends: 87 [2020-07-20 05:44:42,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1031, Invalid=1831, Unknown=0, NotChecked=0, Total=2862 [2020-07-20 05:44:42,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-07-20 05:44:42,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-07-20 05:44:42,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-07-20 05:44:42,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2020-07-20 05:44:42,113 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 151 [2020-07-20 05:44:42,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:44:42,114 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2020-07-20 05:44:42,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-07-20 05:44:42,114 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2020-07-20 05:44:42,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-07-20 05:44:42,115 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:44:42,116 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:44:42,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-07-20 05:44:42,330 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:44:42,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:44:42,331 INFO L82 PathProgramCache]: Analyzing trace with hash -414572547, now seen corresponding path program 24 times [2020-07-20 05:44:42,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:44:42,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499421091] [2020-07-20 05:44:42,331 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@746afafd [2020-07-20 05:44:42,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:42,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:42,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:42,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:42,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:42,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:42,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:42,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:42,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:42,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:42,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:42,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:42,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:42,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:42,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:43,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:43,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:43,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:43,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:43,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:43,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:43,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 0 proven. 876 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2020-07-20 05:44:43,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499421091] [2020-07-20 05:44:43,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065547500] [2020-07-20 05:44:43,352 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@30231064 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:44:43,413 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@30231064 issued 3 check-sat command(s) [2020-07-20 05:44:43,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:44:43,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 52 conjunts are in the unsatisfiable core [2020-07-20 05:44:43,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:44:43,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 0 proven. 876 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2020-07-20 05:44:43,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:44:43,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2020-07-20 05:44:43,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129582437] [2020-07-20 05:44:43,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-07-20 05:44:43,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:44:43,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-07-20 05:44:43,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=385, Invalid=545, Unknown=0, NotChecked=0, Total=930 [2020-07-20 05:44:43,530 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand 31 states. [2020-07-20 05:44:43,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:44:43,995 INFO L93 Difference]: Finished difference Result 94 states and 95 transitions. [2020-07-20 05:44:43,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-07-20 05:44:43,996 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 157 [2020-07-20 05:44:43,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:44:43,998 INFO L225 Difference]: With dead ends: 94 [2020-07-20 05:44:43,998 INFO L226 Difference]: Without dead ends: 90 [2020-07-20 05:44:44,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1111, Invalid=1969, Unknown=0, NotChecked=0, Total=3080 [2020-07-20 05:44:44,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-07-20 05:44:44,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-07-20 05:44:44,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-07-20 05:44:44,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 91 transitions. [2020-07-20 05:44:44,008 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 91 transitions. Word has length 157 [2020-07-20 05:44:44,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:44:44,008 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 91 transitions. [2020-07-20 05:44:44,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-07-20 05:44:44,008 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 91 transitions. [2020-07-20 05:44:44,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-07-20 05:44:44,010 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:44:44,010 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:44:44,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:44:44,225 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:44:44,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:44:44,226 INFO L82 PathProgramCache]: Analyzing trace with hash -975000849, now seen corresponding path program 25 times [2020-07-20 05:44:44,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:44:44,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332052461] [2020-07-20 05:44:44,226 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@746afafd [2020-07-20 05:44:44,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:44,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:44,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:44,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:44,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:44,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:44,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:44,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:44,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:44,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:45,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:45,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:45,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:45,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:45,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:45,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:45,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:46,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:46,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:46,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:46,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:46,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:46,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:46,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:47,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1900 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2020-07-20 05:44:47,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332052461] [2020-07-20 05:44:47,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191935865] [2020-07-20 05:44:47,310 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@432624a1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:44:47,383 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@432624a1 issued 4 check-sat command(s) [2020-07-20 05:44:47,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:44:47,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 107 conjunts are in the unsatisfiable core [2020-07-20 05:44:47,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:44:47,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1900 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2020-07-20 05:44:47,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:44:47,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2020-07-20 05:44:47,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379461005] [2020-07-20 05:44:47,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-07-20 05:44:47,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:44:47,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-07-20 05:44:47,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=2863, Unknown=0, NotChecked=0, Total=2970 [2020-07-20 05:44:47,663 INFO L87 Difference]: Start difference. First operand 90 states and 91 transitions. Second operand 55 states. [2020-07-20 05:44:49,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:44:49,058 INFO L93 Difference]: Finished difference Result 97 states and 98 transitions. [2020-07-20 05:44:49,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-07-20 05:44:49,058 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 163 [2020-07-20 05:44:49,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:44:49,060 INFO L225 Difference]: With dead ends: 97 [2020-07-20 05:44:49,060 INFO L226 Difference]: Without dead ends: 93 [2020-07-20 05:44:49,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 214 SyntacticMatches, 4 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=107, Invalid=2863, Unknown=0, NotChecked=0, Total=2970 [2020-07-20 05:44:49,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-07-20 05:44:49,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-07-20 05:44:49,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-07-20 05:44:49,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2020-07-20 05:44:49,066 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 163 [2020-07-20 05:44:49,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:44:49,066 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2020-07-20 05:44:49,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-07-20 05:44:49,066 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2020-07-20 05:44:49,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-07-20 05:44:49,067 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:44:49,068 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:44:49,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-07-20 05:44:49,276 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:44:49,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:44:49,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1466565251, now seen corresponding path program 26 times [2020-07-20 05:44:49,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:44:49,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500706064] [2020-07-20 05:44:49,278 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@746afafd [2020-07-20 05:44:49,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:49,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:49,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:49,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:49,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:49,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:49,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:49,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:49,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:49,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:49,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:49,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:49,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:50,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:50,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:50,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:50,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:50,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:50,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:50,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:50,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:50,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:50,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:50,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:50,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:44:50,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2054 backedges. 975 proven. 52 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2020-07-20 05:44:50,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500706064] [2020-07-20 05:44:50,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459246575] [2020-07-20 05:44:50,705 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3ae597d0 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:44:50,765 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3ae597d0 issued 3 check-sat command(s) [2020-07-20 05:44:50,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:44:50,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 56 conjunts are in the unsatisfiable core [2020-07-20 05:44:50,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:44:50,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2054 backedges. 1027 proven. 0 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2020-07-20 05:44:50,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-20 05:44:50,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [31] total 33 [2020-07-20 05:44:50,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788851933] [2020-07-20 05:44:50,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-07-20 05:44:50,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:44:50,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-07-20 05:44:50,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=416, Invalid=640, Unknown=0, NotChecked=0, Total=1056 [2020-07-20 05:44:50,896 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand 31 states. [2020-07-20 05:44:51,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:44:51,699 INFO L93 Difference]: Finished difference Result 93 states and 94 transitions. [2020-07-20 05:44:51,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-07-20 05:44:51,700 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 169 [2020-07-20 05:44:51,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:44:51,701 INFO L225 Difference]: With dead ends: 93 [2020-07-20 05:44:51,701 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 05:44:51,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1226, Invalid=2314, Unknown=0, NotChecked=0, Total=3540 [2020-07-20 05:44:51,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 05:44:51,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 05:44:51,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 05:44:51,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 05:44:51,704 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 169 [2020-07-20 05:44:51,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:44:51,704 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 05:44:51,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-07-20 05:44:51,704 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 05:44:51,705 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 05:44:51,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-07-20 05:44:51,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 05:44:51,954 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 05:44:51,954 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 05:44:51,954 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 05:44:51,954 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 05:44:51,955 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 05:44:51,955 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 05:44:51,955 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-07-20 05:44:51,955 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 9 15) the Hoare annotation is: true [2020-07-20 05:44:51,955 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 9 15) no Hoare annotation was computed. [2020-07-20 05:44:51,955 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-07-20 05:44:51,955 INFO L268 CegarLoopResult]: For program point L12(lines 12 14) no Hoare annotation was computed. [2020-07-20 05:44:51,955 INFO L264 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: (and (<= 25 main_~input~0) (<= main_~input~0 25)) [2020-07-20 05:44:51,956 INFO L268 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-07-20 05:44:51,956 INFO L268 CegarLoopResult]: For program point L12-2(lines 9 15) no Hoare annotation was computed. [2020-07-20 05:44:51,956 INFO L268 CegarLoopResult]: For program point idFINAL(lines 4 7) no Hoare annotation was computed. [2020-07-20 05:44:51,956 INFO L268 CegarLoopResult]: For program point idEXIT(lines 4 7) no Hoare annotation was computed. [2020-07-20 05:44:51,956 INFO L271 CegarLoopResult]: At program point idENTRY(lines 4 7) the Hoare annotation is: true [2020-07-20 05:44:51,956 INFO L264 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: (= |id_#in~x| id_~x) [2020-07-20 05:44:51,956 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-20 05:44:51,956 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-07-20 05:44:51,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 05:44:51 BoogieIcfgContainer [2020-07-20 05:44:51,971 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 05:44:51,973 INFO L168 Benchmark]: Toolchain (without parser) took 35442.53 ms. Allocated memory was 137.4 MB in the beginning and 708.3 MB in the end (delta: 570.9 MB). Free memory was 102.7 MB in the beginning and 654.2 MB in the end (delta: -551.6 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. [2020-07-20 05:44:51,974 INFO L168 Benchmark]: CDTParser took 0.22 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: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-20 05:44:51,974 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.43 ms. Allocated memory is still 137.4 MB. Free memory was 102.5 MB in the beginning and 93.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-07-20 05:44:51,975 INFO L168 Benchmark]: Boogie Preprocessor took 23.04 ms. Allocated memory is still 137.4 MB. Free memory was 93.2 MB in the beginning and 91.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-07-20 05:44:51,977 INFO L168 Benchmark]: RCFGBuilder took 335.39 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 91.8 MB in the beginning and 169.1 MB in the end (delta: -77.3 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-07-20 05:44:51,978 INFO L168 Benchmark]: TraceAbstraction took 34753.40 ms. Allocated memory was 200.8 MB in the beginning and 708.3 MB in the end (delta: 507.5 MB). Free memory was 168.4 MB in the beginning and 654.2 MB in the end (delta: -485.8 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-07-20 05:44:51,981 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 323.43 ms. Allocated memory is still 137.4 MB. Free memory was 102.5 MB in the beginning and 93.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.04 ms. Allocated memory is still 137.4 MB. Free memory was 93.2 MB in the beginning and 91.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 335.39 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 91.8 MB in the beginning and 169.1 MB in the end (delta: -77.3 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 34753.40 ms. Allocated memory was 200.8 MB in the beginning and 708.3 MB in the end (delta: 507.5 MB). Free memory was 168.4 MB in the beginning and 654.2 MB in the end (delta: -485.8 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 34.6s, OverallIterations: 27, TraceHistogramMax: 27, AutomataDifference: 7.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 455 SDtfs, 1328 SDslu, 4759 SDs, 0 SdLazy, 3221 SolverSat, 352 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4065 GetRequests, 3202 SyntacticMatches, 4 SemanticMatches, 859 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5551 ImplicationChecksByTransitivity, 12.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=26, 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, 27 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 15 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 18.6s InterpolantComputationTime, 4901 NumberOfCodeBlocks, 4369 NumberOfCodeBlocksAsserted, 106 NumberOfCheckSat, 4848 ConstructedInterpolants, 0 QuantifiedInterpolants, 1491024 SizeOfPredicates, 377 NumberOfNonLiveVariables, 4928 ConjunctsInSsa, 859 ConjunctsInUnsatCore, 53 InterpolantComputations, 2 PerfectInterpolantSequences, 20956/37908 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...